TY  - CONF
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Đukić, Miloš
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7775
AB  - Failures in industrial plants, which operate under extreme conditions, could occur after a short time of exploitation. Erosion wear of materials is caused by the relative movement of solid particles and the surfaces of components. Such erosive wear can lead to the failure of industrial components in a very short time and/or a sharp decline in the structural integrity of industrial equipment. For example, the wear of the ash disposal system in a coal-burning thermal power plant, due to impact of ash particles with a high content of mineral residues, is a very common case of failure and outages in the operation of such industrial systems.
Two high chromium cast irons (HCCI) were tested to determine the erosion wear. These alloys contain 15% Cr and 25% Cr, and it was tested in as-cast and after heat treatment (annealing). A specially designed installation was used for the gas blast sand erosion test. Type of erodent was foundry quartz sand. Erosion tests were done with high erodent particle velocity (90 m/s) and high erodent feed rate (3000 g/min). This conditions represents those similar to extreme wear conditions of some components of thermal power plants using pulverized high mineral content coals.
Microstructural characterization was done at samples before and after erosion tests, Fig. 1. The main results indicate that matrix plastic deformation and distribution of carbide phase have a significant contribution to erosion resistance of HCCI alloys in such conditions.
PB  - Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade
PB  - Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
T1  - Erosion wear of HCCI alloys
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7775
ER  - 

@conference{
author = "Rajičić, Bratislav and Maslarević, Aleksandar and Bakić, Gordana and Maksimović, Vesna and Đukić, Miloš",
year = "2024",
abstract = "Failures in industrial plants, which operate under extreme conditions, could occur after a short time of exploitation. Erosion wear of materials is caused by the relative movement of solid particles and the surfaces of components. Such erosive wear can lead to the failure of industrial components in a very short time and/or a sharp decline in the structural integrity of industrial equipment. For example, the wear of the ash disposal system in a coal-burning thermal power plant, due to impact of ash particles with a high content of mineral residues, is a very common case of failure and outages in the operation of such industrial systems.
Two high chromium cast irons (HCCI) were tested to determine the erosion wear. These alloys contain 15% Cr and 25% Cr, and it was tested in as-cast and after heat treatment (annealing). A specially designed installation was used for the gas blast sand erosion test. Type of erodent was foundry quartz sand. Erosion tests were done with high erodent particle velocity (90 m/s) and high erodent feed rate (3000 g/min). This conditions represents those similar to extreme wear conditions of some components of thermal power plants using pulverized high mineral content coals.
Microstructural characterization was done at samples before and after erosion tests, Fig. 1. The main results indicate that matrix plastic deformation and distribution of carbide phase have a significant contribution to erosion resistance of HCCI alloys in such conditions.",
publisher = "Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade, Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions",
title = "Erosion wear of HCCI alloys",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7775"
}

Rajičić, B., Maslarević, A., Bakić, G., Maksimović, V.,& Đukić, M.. (2024). Erosion wear of HCCI alloys. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_7775

Rajičić B, Maslarević A, Bakić G, Maksimović V, Đukić M. Erosion wear of HCCI alloys. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7775 .

Rajičić, Bratislav, Maslarević, Aleksandar, Bakić, Gordana, Maksimović, Vesna, Đukić, Miloš, "Erosion wear of HCCI alloys" in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7775 .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Maslarević, Aleksandar
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7769
AB  - The fracture of engineering materials is always an undesirable phenomenon, which primarily can endanger human lives, create economic losses, and lead to downtime and unavailability of mechanical parts. The main drawback that still prevents the broader use of ceramic and glass-ceramic materials is the tendency to brittle fracture due to extremely low toughness. Due to the appearance of cracks, the mechanical properties and structure of the material degrade irreversibly, which can lead to catastrophic failure of the mechanical element or construction. This drawback can be overcome by synthesizing novel composite materials with glass-ceramic matrix and metal reinforcement with improved fracture toughness.
This research examined two materials: a glass-ceramic material and a composite material based on glass-ceramic-metal. The glass-ceramic material is obtained from andesite basalt powder, while the glass ceramic-metal composite is made from the glass-ceramic matrix of andesite basalt powder and a metal reinforcement of stainless steel powder in the content of 20 wt%. The aggregate of andesite basalt from Serbia was used as the starting natural raw material for obtaining the glass-ceramic matrix. The austenitic stainless steel powder of the commercial grade Surfit TM 316L was used as a reinforcement. Both materials were obtained using powder metallurgy, which consisted of the following phases: crushing of andesite basalt aggregate, sieving of the stainless steel powder, homogenization of powder and binder, cold uniaxial pressing of the powder, cold isostatic pressing of green compact and sintering as the final phase to obtain a high-density solid sample.
The andesite basalt, and 316L stainless steel powder were characterized using a scanning electron microscope and X-ray diffraction method. The sintered samples of glass-ceramic and glass-ceramic-metal were characterized with an optical light microscope, scanning electron microscope, and Vickers hardness test.
Based on the obtained results, it can bu concluded that the presence of metallic particles in the glass-ceramic matrix leads to a slight decrease in hardness while contributing to an increase in the materials fracture toughness by about 33% [1]. During crack propagation in the glass-ceramic matrix, different crack particle interactions were observed: crack stops, deflects, or bridgings when encountering the spherical metal particle. These interaction phenomena and mechanisms of crack propagation in the glass-ceramic-metal composite lead to an increase of crack propagation resistance.
PB  - Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade
PB  - Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
T1  - The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7769
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Maslarević, Aleksandar and Rajičić, Bratislav and Milošević, Nenad",
year = "2024",
abstract = "The fracture of engineering materials is always an undesirable phenomenon, which primarily can endanger human lives, create economic losses, and lead to downtime and unavailability of mechanical parts. The main drawback that still prevents the broader use of ceramic and glass-ceramic materials is the tendency to brittle fracture due to extremely low toughness. Due to the appearance of cracks, the mechanical properties and structure of the material degrade irreversibly, which can lead to catastrophic failure of the mechanical element or construction. This drawback can be overcome by synthesizing novel composite materials with glass-ceramic matrix and metal reinforcement with improved fracture toughness.
This research examined two materials: a glass-ceramic material and a composite material based on glass-ceramic-metal. The glass-ceramic material is obtained from andesite basalt powder, while the glass ceramic-metal composite is made from the glass-ceramic matrix of andesite basalt powder and a metal reinforcement of stainless steel powder in the content of 20 wt%. The aggregate of andesite basalt from Serbia was used as the starting natural raw material for obtaining the glass-ceramic matrix. The austenitic stainless steel powder of the commercial grade Surfit TM 316L was used as a reinforcement. Both materials were obtained using powder metallurgy, which consisted of the following phases: crushing of andesite basalt aggregate, sieving of the stainless steel powder, homogenization of powder and binder, cold uniaxial pressing of the powder, cold isostatic pressing of green compact and sintering as the final phase to obtain a high-density solid sample.
The andesite basalt, and 316L stainless steel powder were characterized using a scanning electron microscope and X-ray diffraction method. The sintered samples of glass-ceramic and glass-ceramic-metal were characterized with an optical light microscope, scanning electron microscope, and Vickers hardness test.
Based on the obtained results, it can bu concluded that the presence of metallic particles in the glass-ceramic matrix leads to a slight decrease in hardness while contributing to an increase in the materials fracture toughness by about 33% [1]. During crack propagation in the glass-ceramic matrix, different crack particle interactions were observed: crack stops, deflects, or bridgings when encountering the spherical metal particle. These interaction phenomena and mechanisms of crack propagation in the glass-ceramic-metal composite lead to an increase of crack propagation resistance.",
publisher = "Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade, Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions",
title = "The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7769"
}

Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I., Maslarević, A., Rajičić, B.,& Milošević, N.. (2024). The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_7769

Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Maslarević A, Rajičić B, Milošević N. The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7769 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Maslarević, Aleksandar, Rajičić, Bratislav, Milošević, Nenad, "The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite" in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7769 .

TY  - THES
AU  - Rajičić, Bratislav
PY  - 2023-01-17
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7732
AB  - Produžetak radnog veka kritičnih komponenti industrijskih sistema je moguć kroz izbor i ugradnju pravilno projektovanog materijala. Pri jednom takvom izboru potrebno je izvršiti detaljnu karakterizaciju materijala i ispitivanje različitim metodama sa posebnim osvrtom na eksperimentalna ispitivanja u uslovima koji simuliraju radne uslove. Ovakva ispitivanja, uz dodatnu mogućnost izvođenja ispitivanja in-situ i uz određivanje optimalnog polaznog stanja materijala, predstavljaju osnovu pravilnog izbora, izrade i ugradnje projektovanog materijala.
Istraživanja u okviru ove disertacije su usmerena na produžetak radnog veka kritičnih komponenti sistema za otpepeljavanje na jednom domaćem termoenergetskom sistemu. Cevovodi za pneumatski transport pepela su izdvojeni kao najkritičniji elementi tih sistema, gde su svakodnevni zastoji i otkazi bili prouzrokovani erozivno-abrazivnim oštećenjima materijala usled transporta velike količine pepela.
Polazna smernica u rešavanju ovakvog problema je bila modifikacija hemijskog sastava postojećih legura belih livenih gvožđa legiranih sa ~15%Cr i ~25%Cr (HCCI legure) i ograničenje sadržaja uticajnih legirajućih elemenata kako bi se, uz pravilan izbor parametara režima termičke obrade žarenja, dobila austenitna duktilna osnova sa manjim sadržajem martenzita i sa čvrsto vezanim M7C3 karbidima u njoj. U cilju poređenja, ispitane su predložene HCCI legure u stanju nakon livenja i u stanju nakon termičke obrade, kao i prevlake na bazi Fe-Cr-C legura nanete plazma postupkom navarivanja. Takođe, u okviru ove disertacije, izvršena su i laboratorijska ispitivanja erozione otpornosti uzoraka od svih predloženih materijala, kao i do sada korišćenih komercijalnih materijala u cevovodima za otpepeljavanje na bazi bazalta i keramike. Erozioni test je sproveden u uslovima velikih brzina čestica i sa povećanim masenim protokom erodenta, simulirajući na taj način realne intenzivne eksploatacione uslove.
Detaljna karakterizacija svih ispitanih materijala, na osnovu rezultata erozionog testa i prema mikromehanizmima erozije koji u intenzivnim uslovima rada dovode do erozivno-abrazivnih oštećenja, poslužili su da se izabere legura kandidat za izradu mašinskog dela i ispitivanje in-situ. Tako je u nastavku istraživanja ove disertacije, izrađen cevni luk od izabrane HCCI legure i isti je ugrađen na sistem za pneumatski transport pepela na domaćem TE postrojenju. Od posebnog značaja su rezultati ispitivanja in-situ i njihovo poređenje sa rezultatima laboratorijskih ispitivanja istih legura. Rezultati eksperimentalnih laboratorijskih ispitivanja erozione otpornosti HCCI legura, u okviru ove disertacije, su verifikovani publikovanjem u relevantnim međunarodnim naučnim časopisima.
AB  - Extending remaining life assessment of critical components of industrial systems is possible through the selection of properly designed materials. When making such a choice, it is necessary to carry out a detailed characterization of the material and testing with different methods, with special reference to experimental tests in conditions that simulate working conditions. Such tests, with the additional possibility of conducting in-situ tests and determining the optimal initial state of the material, represent the basis for the correct selection, production and installation of the designed material.
The research in this dissertation is focused on extending the remaining life of critical components of the ash removal system on a domestic Thermal Power Plant (TPP). Pipelines for pneumatic transport of ash were singled out as the most critical elements of those systems, where daily outages and failures were caused by erosive-abrasive material damages, due to the transport of a large amount of ash.
The initial guideline in solving such a problem was the modification of the chemical composition of the white cast iron alloys alloyed with ~15%Cr and ~25%Cr (HCCI alloys) and the limitation of the content of influential alloying elements in order to, with the correct selection of parameters of the annealing heat treatment regime, obtained an austenitic ductile base with a lower content of martensite and with tightly bound M7C3 carbides in it. For the purpose of comparison, the proposed HCCI alloys were examined in the state after casting and in the state after heat treatment, as well as coatings based on Fe-Cr-C alloys applied by the plasma transferred arc surfacing process. Also, as part of this dissertation, laboratory tests of the erosion resistance of samples of all the proposed materials, as well as commercial materials used so far in ash removal pipelines based on basalt and ceramics, were performed. The erosion test was conducted under conditions of high particle velocities and with an increased mass flow of the erodent, thus simulating realistic intensive exploitation conditions.
Detailed characterization of all the tested materials, based on the results of the erosion test and according to the erosion micromechanisms that lead to erosive-abrasive damage in intensive working conditions, served to select a substitute alloy for the production of the machine part and in-situ testing. Thus, in the research of this dissertation, a pipe arch was made from the selected HCCI alloy and it was built-in on the system for pneumatic transport of ash at the domestic TPP. The results of in-situ tests and their comparison with the results of laboratory tests of the same alloys, are of particular importance. The results of experimental laboratory tests of erosion resistance of HCCI alloys, within this dissertation, were verified by publication in relevant international scientific journals.
T2  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Materijali povećane erozione otpornosti izloženi ekstremnim uslovima rada na termoenergetskim postrojenjima
T1  - Materials with increased erosion resistance exposed to extreme working conditions at Thermal Power Plants
EP  - 104
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7732
ER  - 

@phdthesis{
author = "Rajičić, Bratislav",
year = "2023-01-17",
abstract = "Produžetak radnog veka kritičnih komponenti industrijskih sistema je moguć kroz izbor i ugradnju pravilno projektovanog materijala. Pri jednom takvom izboru potrebno je izvršiti detaljnu karakterizaciju materijala i ispitivanje različitim metodama sa posebnim osvrtom na eksperimentalna ispitivanja u uslovima koji simuliraju radne uslove. Ovakva ispitivanja, uz dodatnu mogućnost izvođenja ispitivanja in-situ i uz određivanje optimalnog polaznog stanja materijala, predstavljaju osnovu pravilnog izbora, izrade i ugradnje projektovanog materijala.
Istraživanja u okviru ove disertacije su usmerena na produžetak radnog veka kritičnih komponenti sistema za otpepeljavanje na jednom domaćem termoenergetskom sistemu. Cevovodi za pneumatski transport pepela su izdvojeni kao najkritičniji elementi tih sistema, gde su svakodnevni zastoji i otkazi bili prouzrokovani erozivno-abrazivnim oštećenjima materijala usled transporta velike količine pepela.
Polazna smernica u rešavanju ovakvog problema je bila modifikacija hemijskog sastava postojećih legura belih livenih gvožđa legiranih sa ~15%Cr i ~25%Cr (HCCI legure) i ograničenje sadržaja uticajnih legirajućih elemenata kako bi se, uz pravilan izbor parametara režima termičke obrade žarenja, dobila austenitna duktilna osnova sa manjim sadržajem martenzita i sa čvrsto vezanim M7C3 karbidima u njoj. U cilju poređenja, ispitane su predložene HCCI legure u stanju nakon livenja i u stanju nakon termičke obrade, kao i prevlake na bazi Fe-Cr-C legura nanete plazma postupkom navarivanja. Takođe, u okviru ove disertacije, izvršena su i laboratorijska ispitivanja erozione otpornosti uzoraka od svih predloženih materijala, kao i do sada korišćenih komercijalnih materijala u cevovodima za otpepeljavanje na bazi bazalta i keramike. Erozioni test je sproveden u uslovima velikih brzina čestica i sa povećanim masenim protokom erodenta, simulirajući na taj način realne intenzivne eksploatacione uslove.
Detaljna karakterizacija svih ispitanih materijala, na osnovu rezultata erozionog testa i prema mikromehanizmima erozije koji u intenzivnim uslovima rada dovode do erozivno-abrazivnih oštećenja, poslužili su da se izabere legura kandidat za izradu mašinskog dela i ispitivanje in-situ. Tako je u nastavku istraživanja ove disertacije, izrađen cevni luk od izabrane HCCI legure i isti je ugrađen na sistem za pneumatski transport pepela na domaćem TE postrojenju. Od posebnog značaja su rezultati ispitivanja in-situ i njihovo poređenje sa rezultatima laboratorijskih ispitivanja istih legura. Rezultati eksperimentalnih laboratorijskih ispitivanja erozione otpornosti HCCI legura, u okviru ove disertacije, su verifikovani publikovanjem u relevantnim međunarodnim naučnim časopisima., Extending remaining life assessment of critical components of industrial systems is possible through the selection of properly designed materials. When making such a choice, it is necessary to carry out a detailed characterization of the material and testing with different methods, with special reference to experimental tests in conditions that simulate working conditions. Such tests, with the additional possibility of conducting in-situ tests and determining the optimal initial state of the material, represent the basis for the correct selection, production and installation of the designed material.
The research in this dissertation is focused on extending the remaining life of critical components of the ash removal system on a domestic Thermal Power Plant (TPP). Pipelines for pneumatic transport of ash were singled out as the most critical elements of those systems, where daily outages and failures were caused by erosive-abrasive material damages, due to the transport of a large amount of ash.
The initial guideline in solving such a problem was the modification of the chemical composition of the white cast iron alloys alloyed with ~15%Cr and ~25%Cr (HCCI alloys) and the limitation of the content of influential alloying elements in order to, with the correct selection of parameters of the annealing heat treatment regime, obtained an austenitic ductile base with a lower content of martensite and with tightly bound M7C3 carbides in it. For the purpose of comparison, the proposed HCCI alloys were examined in the state after casting and in the state after heat treatment, as well as coatings based on Fe-Cr-C alloys applied by the plasma transferred arc surfacing process. Also, as part of this dissertation, laboratory tests of the erosion resistance of samples of all the proposed materials, as well as commercial materials used so far in ash removal pipelines based on basalt and ceramics, were performed. The erosion test was conducted under conditions of high particle velocities and with an increased mass flow of the erodent, thus simulating realistic intensive exploitation conditions.
Detailed characterization of all the tested materials, based on the results of the erosion test and according to the erosion micromechanisms that lead to erosive-abrasive damage in intensive working conditions, served to select a substitute alloy for the production of the machine part and in-situ testing. Thus, in the research of this dissertation, a pipe arch was made from the selected HCCI alloy and it was built-in on the system for pneumatic transport of ash at the domestic TPP. The results of in-situ tests and their comparison with the results of laboratory tests of the same alloys, are of particular importance. The results of experimental laboratory tests of erosion resistance of HCCI alloys, within this dissertation, were verified by publication in relevant international scientific journals.",
journal = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Materijali povećane erozione otpornosti izloženi ekstremnim uslovima rada na termoenergetskim postrojenjima, Materials with increased erosion resistance exposed to extreme working conditions at Thermal Power Plants",
pages = "104-1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7732"
}

Rajičić, B.. (2023-01-17). Materijali povećane erozione otpornosti izloženi ekstremnim uslovima rada na termoenergetskim postrojenjima. in Univerzitet u Beogradu, Mašinski fakultet, 1-104.
https://hdl.handle.net/21.15107/rcub_machinery_7732

Rajičić B. Materijali povećane erozione otpornosti izloženi ekstremnim uslovima rada na termoenergetskim postrojenjima. in Univerzitet u Beogradu, Mašinski fakultet. 2023;:1-104.
https://hdl.handle.net/21.15107/rcub_machinery_7732 .

Rajičić, Bratislav, "Materijali povećane erozione otpornosti izloženi ekstremnim uslovima rada na termoenergetskim postrojenjima" in Univerzitet u Beogradu, Mašinski fakultet (2023-01-17):1-104,
https://hdl.handle.net/21.15107/rcub_machinery_7732 .

TY  - JOUR
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Đukić, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4604
AB  - In this study, two high chromium cast irons
(HCCI) with different chromium content (15%Cr and
25%Cr), in as-cast and annealed conditions (heat-treated,
HT), were tested to determine the erosion wear behavior of
these alloys. Erosion tests were done using a gas blast sand
facility with high erodent particle velocity (90 m/s) and high
erodent feed rate, at an impact angle of 45°, which represents
conditions similar to service conditions of some components
of thermal power plants using pulverized high mineral content
coals. To identify erosion mechanisms, microstructural
characterization was done by a scanning electron microscope
on samples before and after erosion tests. Identification of
microstructural phases was done by X-ray diffraction analysis.
The main results of the tests shown in this paper indicate
that matrix plastic deformation and distribution of carbide
phase have a significant contribution to erosion resistance of
HCCI alloys in severe erosion service conditions.
PB  - Springer
T2  - Transactions of The Indian Institute of Metals
T1  - Erosion Wear Behavior of High Chromium Cast Irons
DO  - 10.1007/s12666-022-02860-7
ER  - 

@article{
author = "Rajičić, Bratislav and Maslarević, Aleksandar and Bakić, Gordana and Maksimović, Vesna and Đukić, Miloš",
year = "2023",
abstract = "In this study, two high chromium cast irons
(HCCI) with different chromium content (15%Cr and
25%Cr), in as-cast and annealed conditions (heat-treated,
HT), were tested to determine the erosion wear behavior of
these alloys. Erosion tests were done using a gas blast sand
facility with high erodent particle velocity (90 m/s) and high
erodent feed rate, at an impact angle of 45°, which represents
conditions similar to service conditions of some components
of thermal power plants using pulverized high mineral content
coals. To identify erosion mechanisms, microstructural
characterization was done by a scanning electron microscope
on samples before and after erosion tests. Identification of
microstructural phases was done by X-ray diffraction analysis.
The main results of the tests shown in this paper indicate
that matrix plastic deformation and distribution of carbide
phase have a significant contribution to erosion resistance of
HCCI alloys in severe erosion service conditions.",
publisher = "Springer",
journal = "Transactions of The Indian Institute of Metals",
title = "Erosion Wear Behavior of High Chromium Cast Irons",
doi = "10.1007/s12666-022-02860-7"
}

Rajičić, B., Maslarević, A., Bakić, G., Maksimović, V.,& Đukić, M.. (2023). Erosion Wear Behavior of High Chromium Cast Irons. in Transactions of The Indian Institute of Metals
Springer..
https://doi.org/10.1007/s12666-022-02860-7

Rajičić B, Maslarević A, Bakić G, Maksimović V, Đukić M. Erosion Wear Behavior of High Chromium Cast Irons. in Transactions of The Indian Institute of Metals. 2023;.
doi:10.1007/s12666-022-02860-7 .

Rajičić, Bratislav, Maslarević, Aleksandar, Bakić, Gordana, Maksimović, Vesna, Đukić, Miloš, "Erosion Wear Behavior of High Chromium Cast Irons" in Transactions of The Indian Institute of Metals (2023),
https://doi.org/10.1007/s12666-022-02860-7 . .

TY  - JOUR
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Maksimović, Vesna
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7333
AB  - The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding param¬eters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the micro¬structural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its charac¬terization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy.
T2  - Structural Integrity and Life
T1  - Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating
EP  - 128
IS  - 2
SP  - 123
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7333
ER  - 

@article{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Maksimović, Vesna",
year = "2023",
abstract = "The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding param¬eters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the micro¬structural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its charac¬terization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy.",
journal = "Structural Integrity and Life",
title = "Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating",
pages = "128-123",
number = "2",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7333"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N.,& Maksimović, V.. (2023). Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating. in Structural Integrity and Life, 23(2), 123-128.
https://hdl.handle.net/21.15107/rcub_machinery_7333

Maslarević A, Bakić G, Rajičić B, Milošević N, Maksimović V. Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating. in Structural Integrity and Life. 2023;23(2):123-128.
https://hdl.handle.net/21.15107/rcub_machinery_7333 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Maksimović, Vesna, "Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating" in Structural Integrity and Life, 23, no. 2 (2023):123-128,
https://hdl.handle.net/21.15107/rcub_machinery_7333 .

TY  - CONF
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6895
AB  - Compound Ti2AlC is a MAX phase discovered in the early 1960s.  It is well known that Ti2AlC has excellent physical and mechanical properties and chemical stability [1]. On the surface of Ti2AlC, at high temperatures, a stable, protective oxide layer, Al2O3, is usually formed [2], whose coefficient of thermal expansion is approximately equal to the coefficient of thermal expansion of Ti2AlC [3]. If this Al2O3 layer is compact, it stops further oxygen penetration and protects Ti2AlC from further oxidation. Due to its excellent oxidation resistance, MAX phase Ti2AlC has great potential in producing protective coatings for components in the industry that are exposed to high temperatures [4,5]. Coating Ti2AlC can be applied to the substrate by different thermal spraying processes. Cold spraying (CS), high velocity air fuel (HVAF), and high velocity oxygen fuel (HVOF) processes can be singled out as particularly interesting due to the possibility of applying thicker coatings to the substrate [6].
This paper describes the technology of applying the Ti2AlC phase on heat-resistant steel using the HVOF system of the third generation, which uses a mixture of oxygen and kerosene as fuel. Also, the filler material, which was in the form of powder, and the microstructure of the obtained coating were characterized by scanning electron microscopy (SEM). The Ti2AlC coating was successfully applied and a relatively good mechanical bond was achieved with the substrate. The goal of surfacing the Ti2AlC coating was a potential application for protecting steel from oxidation at elevated temperatures.

[1] F. Zhang et al., Surf.Coat. Tech., 441(2022) 128584.
[2] X.H. Wang, Y.C. Zhou, Oxid. Met., 59(2003) 303.
[3] W.H. Gitzen (Ed.), Westerville, Ohio, (1970) ISBN 0-916094-46-4.
[4]Q.M. Wanget et al, Surf.Coat.Tech., 204(2010) 2343.
[5] X.H. Wang and Y.C. Zhou, J. Mater. Sci. Technol., 26(2010) 385.
[6] N. Markocsan et al., Сверхтвердые материалы, 5(2017) 73.
PB  - Beograd : Institut za multidisciplinarna istrazivanja
C3  - 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia
T1  - Thermal Spraying of Ti2AlC coatings
EP  - 89
SP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6895
ER  - 

@conference{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Maksimović, Vesna and Pavkov, Vladimir",
year = "2023",
abstract = "Compound Ti2AlC is a MAX phase discovered in the early 1960s.  It is well known that Ti2AlC has excellent physical and mechanical properties and chemical stability [1]. On the surface of Ti2AlC, at high temperatures, a stable, protective oxide layer, Al2O3, is usually formed [2], whose coefficient of thermal expansion is approximately equal to the coefficient of thermal expansion of Ti2AlC [3]. If this Al2O3 layer is compact, it stops further oxygen penetration and protects Ti2AlC from further oxidation. Due to its excellent oxidation resistance, MAX phase Ti2AlC has great potential in producing protective coatings for components in the industry that are exposed to high temperatures [4,5]. Coating Ti2AlC can be applied to the substrate by different thermal spraying processes. Cold spraying (CS), high velocity air fuel (HVAF), and high velocity oxygen fuel (HVOF) processes can be singled out as particularly interesting due to the possibility of applying thicker coatings to the substrate [6].
This paper describes the technology of applying the Ti2AlC phase on heat-resistant steel using the HVOF system of the third generation, which uses a mixture of oxygen and kerosene as fuel. Also, the filler material, which was in the form of powder, and the microstructure of the obtained coating were characterized by scanning electron microscopy (SEM). The Ti2AlC coating was successfully applied and a relatively good mechanical bond was achieved with the substrate. The goal of surfacing the Ti2AlC coating was a potential application for protecting steel from oxidation at elevated temperatures.

[1] F. Zhang et al., Surf.Coat. Tech., 441(2022) 128584.
[2] X.H. Wang, Y.C. Zhou, Oxid. Met., 59(2003) 303.
[3] W.H. Gitzen (Ed.), Westerville, Ohio, (1970) ISBN 0-916094-46-4.
[4]Q.M. Wanget et al, Surf.Coat.Tech., 204(2010) 2343.
[5] X.H. Wang and Y.C. Zhou, J. Mater. Sci. Technol., 26(2010) 385.
[6] N. Markocsan et al., Сверхтвердые материалы, 5(2017) 73.",
publisher = "Beograd : Institut za multidisciplinarna istrazivanja",
journal = "7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia",
title = "Thermal Spraying of Ti2AlC coatings",
pages = "89-89",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6895"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N., Maksimović, V.,& Pavkov, V.. (2023). Thermal Spraying of Ti2AlC coatings. in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia
Beograd : Institut za multidisciplinarna istrazivanja., 89-89.
https://hdl.handle.net/21.15107/rcub_machinery_6895

Maslarević A, Bakić G, Rajičić B, Milošević N, Maksimović V, Pavkov V. Thermal Spraying of Ti2AlC coatings. in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia. 2023;:89-89.
https://hdl.handle.net/21.15107/rcub_machinery_6895 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Maksimović, Vesna, Pavkov, Vladimir, "Thermal Spraying of Ti2AlC coatings" in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia (2023):89-89,
https://hdl.handle.net/21.15107/rcub_machinery_6895 .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Matović, Branko
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7430
AB  - One of the most responsible elements of modern steam boilers are steam superheaters and reheaters.
These heating surfaces are inside the boiler chamber and consist of tubes connected to the inlet and
outlet header. Due to the complexity of service conditions, boiler tubes are exposed to processes of
gradual degradation, and consequently a decrease in operating performance and reliability.
In the operation of thermal power plants, irreversible metal losses resulting from corrosion can
cause tube failure and plant outage. Considering the loss of materials, gas corrosion in the dry gas
atmosphere due to the high temperature is of great importance. Gas corrosion can be expressed in
the boiler tubing system due to the presence of sulfur compounds in the flue gases. For this reason,
it must be borne in mind that the outer surface of a tube of final reheater has different damage
mechanisms during operation, and one of them is gas corrosion. Gas corrosion causes material loss
and provides a site for crack initiation and propagation, which can compromise the integrity of the
pressure vessel.
In this paper, a tube of a final reheater from a 210 MW power plant was tested. The tube was in
service 200,000 h at a working temperature of 540 °C and a maximum working pressure of 4.6
MPa. The tube is made of low alloy Cr-Mo-V steel, class 12H1MF (GOST). After long-term
service, a rough surface and loss of the material in the form of a crater were observed on the outer
surface of the tube as a result of the effect of gas corrosion, together with the change of
microstructure due to elevated service temperature. The measured depth of damage to the tube is
120 m. The presence of gas corrosion on the tube was confirmed and measured by an optical
microscope, Figure 1.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022
T1  - Damage to a tube of output reheater due to gas corrosion
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7430
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar and Matović, Branko",
year = "2022",
abstract = "One of the most responsible elements of modern steam boilers are steam superheaters and reheaters.
These heating surfaces are inside the boiler chamber and consist of tubes connected to the inlet and
outlet header. Due to the complexity of service conditions, boiler tubes are exposed to processes of
gradual degradation, and consequently a decrease in operating performance and reliability.
In the operation of thermal power plants, irreversible metal losses resulting from corrosion can
cause tube failure and plant outage. Considering the loss of materials, gas corrosion in the dry gas
atmosphere due to the high temperature is of great importance. Gas corrosion can be expressed in
the boiler tubing system due to the presence of sulfur compounds in the flue gases. For this reason,
it must be borne in mind that the outer surface of a tube of final reheater has different damage
mechanisms during operation, and one of them is gas corrosion. Gas corrosion causes material loss
and provides a site for crack initiation and propagation, which can compromise the integrity of the
pressure vessel.
In this paper, a tube of a final reheater from a 210 MW power plant was tested. The tube was in
service 200,000 h at a working temperature of 540 °C and a maximum working pressure of 4.6
MPa. The tube is made of low alloy Cr-Mo-V steel, class 12H1MF (GOST). After long-term
service, a rough surface and loss of the material in the form of a crater were observed on the outer
surface of the tube as a result of the effect of gas corrosion, together with the change of
microstructure due to elevated service temperature. The measured depth of damage to the tube is
120 m. The presence of gas corrosion on the tube was confirmed and measured by an optical
microscope, Figure 1.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022",
title = "Damage to a tube of output reheater due to gas corrosion",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7430"
}

Pavkov, V., Bakić, G., Maksimović, V., Đukić, M., Rajičić, B., Maslarević, A.,& Matović, B.. (2022). Damage to a tube of output reheater due to gas corrosion. in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_7430

Pavkov V, Bakić G, Maksimović V, Đukić M, Rajičić B, Maslarević A, Matović B. Damage to a tube of output reheater due to gas corrosion. in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_7430 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, Matović, Branko, "Damage to a tube of output reheater due to gas corrosion" in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_7430 .

TY  - PAT
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Martić, Igor
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4280
T1  - Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4280
ER  - 

@misc{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Martić, Igor",
year = "2022",
title = "Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4280"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N.,& Martić, I.. (2022). Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha. .
https://hdl.handle.net/21.15107/rcub_machinery_4280

Maslarević A, Bakić G, Rajičić B, Milošević N, Martić I. Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4280 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Martić, Igor, "Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha" (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4280 .

TY  - CONF
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
AU  - Milošević, Nenad
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4429
C3  - Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022
T1  - High temperature failures of metals
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4429
ER  - 

@conference{
author = "Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar and Maksimović, Vesna and Pavkov, Vladimir and Milošević, Nenad",
year = "2022",
journal = "Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022",
title = "High temperature failures of metals",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4429"
}

Bakić, G., Đukić, M., Rajičić, B., Maslarević, A., Maksimović, V., Pavkov, V.,& Milošević, N.. (2022). High temperature failures of metals. in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022.
https://hdl.handle.net/21.15107/rcub_machinery_4429

Bakić G, Đukić M, Rajičić B, Maslarević A, Maksimović V, Pavkov V, Milošević N. High temperature failures of metals. in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4429 .

Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, Maksimović, Vesna, Pavkov, Vladimir, Milošević, Nenad, "High temperature failures of metals" in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4429 .

TY  - CONF
AU  - Bakić, Gordana
AU  - Peruničić, Vesna
AU  - Gajić, Ivan
AU  - Bezmarević, Savo
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4290
AB  - Nabavka visoko vrednih delova termoenergetskih postrojenja, kao što su komponente parovoda sveže pare koje su izložene najvišim radnim parametrima tokom rada postrojenja, podrazumeva definisanje vrlo preciznih zahteva za isporuku delova opreme. Kada postoje precizni zahtevi za gotov proizvod, ispručioci moraju strogo da kontrolišu parametre proizvodnje delova. Značaj svakog od zahteva često promiče tehničkim licima, i onima koji nabavljaju i onima koji isporučuju opremu, posebno ako zahtevi nisu sadržani u standardima, već proističu iz saznanja koja su domen usko specijalizovanih naučnih oblasti. U ovom radu je na primeru komponenti parovoda sveže pare izrađenih od čelika X10CrMoVNb91 koje su isporučene sa nehomogenim i u nekom delu sniženim osobinama prikazan značaj kako ulazne kontrole, tako i poštovanja svakog od tehničkih zahteva. Takođe, ponuđeno je i rešenje šta raditi sa takvom opremom i ocenjeno je koliko dugo bi ona mogla bezbedno da radi sa nižim osobinama.
AB  - Procurement of highly valuable parts of thermal power plants, such as fresh steam pipeline components that are exposed to the highest operating parameters during the operation of the plant, implies defining very precise requirements for the delivery of equipment parts. When there are precise requirements for the finished product, the producers need to obtained strictly control of the production parameters. The importance of each of the requirements is often oversighted by technical persons, both those who procure and those who supply equipment, especially if the requirements are not contained in the standards, but derive from knowledge that is the domain of narrowly specialized scientific fields. In this paper, the importance of both input control and compliance with each of the technical requirements is shown on the example of fresh steam steam pipe components made of X10CrMoVNb91 steel that are delivered with inhomogeneous and in some parts reduced properties. Also, a solution was offered on what to do with such equipment and it was assessed how long it could work safely with lower properties.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - Full Papers Proceedings of International Conference "Power Plants 2021" November 17-18TH, 2021, Belgrade, Serbia
T1  - Eksploataciona upotrebljivost materijala X10CrMoVNb91 sa nižim osobinama od onih zahtevanih standardomi značaj tehničkih zahteva
T1  - Serviceability of X10CrMoVNb91 material with lower properties than required by standard and the importance of technical delivery requirements
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4290
ER  - 

@conference{
author = "Bakić, Gordana and Peruničić, Vesna and Gajić, Ivan and Bezmarević, Savo and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar",
year = "2021",
abstract = "Nabavka visoko vrednih delova termoenergetskih postrojenja, kao što su komponente parovoda sveže pare koje su izložene najvišim radnim parametrima tokom rada postrojenja, podrazumeva definisanje vrlo preciznih zahteva za isporuku delova opreme. Kada postoje precizni zahtevi za gotov proizvod, ispručioci moraju strogo da kontrolišu parametre proizvodnje delova. Značaj svakog od zahteva često promiče tehničkim licima, i onima koji nabavljaju i onima koji isporučuju opremu, posebno ako zahtevi nisu sadržani u standardima, već proističu iz saznanja koja su domen usko specijalizovanih naučnih oblasti. U ovom radu je na primeru komponenti parovoda sveže pare izrađenih od čelika X10CrMoVNb91 koje su isporučene sa nehomogenim i u nekom delu sniženim osobinama prikazan značaj kako ulazne kontrole, tako i poštovanja svakog od tehničkih zahteva. Takođe, ponuđeno je i rešenje šta raditi sa takvom opremom i ocenjeno je koliko dugo bi ona mogla bezbedno da radi sa nižim osobinama., Procurement of highly valuable parts of thermal power plants, such as fresh steam pipeline components that are exposed to the highest operating parameters during the operation of the plant, implies defining very precise requirements for the delivery of equipment parts. When there are precise requirements for the finished product, the producers need to obtained strictly control of the production parameters. The importance of each of the requirements is often oversighted by technical persons, both those who procure and those who supply equipment, especially if the requirements are not contained in the standards, but derive from knowledge that is the domain of narrowly specialized scientific fields. In this paper, the importance of both input control and compliance with each of the technical requirements is shown on the example of fresh steam steam pipe components made of X10CrMoVNb91 steel that are delivered with inhomogeneous and in some parts reduced properties. Also, a solution was offered on what to do with such equipment and it was assessed how long it could work safely with lower properties.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "Full Papers Proceedings of International Conference "Power Plants 2021" November 17-18TH, 2021, Belgrade, Serbia",
title = "Eksploataciona upotrebljivost materijala X10CrMoVNb91 sa nižim osobinama od onih zahtevanih standardomi značaj tehničkih zahteva, Serviceability of X10CrMoVNb91 material with lower properties than required by standard and the importance of technical delivery requirements",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4290"
}

Bakić, G., Peruničić, V., Gajić, I., Bezmarević, S., Đukić, M., Rajičić, B.,& Maslarević, A.. (2021). Eksploataciona upotrebljivost materijala X10CrMoVNb91 sa nižim osobinama od onih zahtevanih standardomi značaj tehničkih zahteva. in Full Papers Proceedings of International Conference "Power Plants 2021" November 17-18TH, 2021, Belgrade, Serbia
Belgrade : Society of Thermal Engineers of Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_4290

Bakić G, Peruničić V, Gajić I, Bezmarević S, Đukić M, Rajičić B, Maslarević A. Eksploataciona upotrebljivost materijala X10CrMoVNb91 sa nižim osobinama od onih zahtevanih standardomi značaj tehničkih zahteva. in Full Papers Proceedings of International Conference "Power Plants 2021" November 17-18TH, 2021, Belgrade, Serbia. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_4290 .

Bakić, Gordana, Peruničić, Vesna, Gajić, Ivan, Bezmarević, Savo, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, "Eksploataciona upotrebljivost materijala X10CrMoVNb91 sa nižim osobinama od onih zahtevanih standardomi značaj tehničkih zahteva" in Full Papers Proceedings of International Conference "Power Plants 2021" November 17-18TH, 2021, Belgrade, Serbia (2021),
https://hdl.handle.net/21.15107/rcub_machinery_4290 .

TY  - PAT
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Mitrović, Nenad
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4375
T1  - Uređaj za eroziono ispitivanje materijala čvrstim česticama
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4375
ER  - 

@misc{
author = "Maslarević, Aleksandar and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Mitrović, Nenad",
year = "2020",
title = "Uređaj za eroziono ispitivanje materijala čvrstim česticama",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4375"
}

Maslarević, A., Bakić, G., Đukić, M., Rajičić, B.,& Mitrović, N.. (2020). Uređaj za eroziono ispitivanje materijala čvrstim česticama. .
https://hdl.handle.net/21.15107/rcub_machinery_4375

Maslarević A, Bakić G, Đukić M, Rajičić B, Mitrović N. Uređaj za eroziono ispitivanje materijala čvrstim česticama. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_4375 .

Maslarević, Aleksandar, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Mitrović, Nenad, "Uređaj za eroziono ispitivanje materijala čvrstim česticama" (2020),
https://hdl.handle.net/21.15107/rcub_machinery_4375 .

TY  - JOUR
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3336
AB  - In this study, two erosion protection MMC coatings with WC particles were deposited by the plasma transferred arc (PTA) welding. One of the coatings with tungsten carbide WC in the NiBSi matrix (WC/NiBSi), and the second coating WC in NiCrBSi matrix (WC/NiCrBSi) was deposited by the flame spray process on the same substrate material S235JR steel. Experiments were performed using a gas blast sand erosion test facility with high-velocity erodent particles impact (approximately 100 m/s) at different particle impact angles (20 degrees-45 degrees), with an objective to study erosion wear characteristics and mass loss of two MMC coatings. Microstructural characterization of MMC coatings was done by scanning electron microscope equipped with energy-dispersive X-ray spectroscopy, whereas X-ray diffraction analysis was used for identification of present phases. The hardness of coatings was determined by Vickers hardness measurements. WC/NiBSi obtained by the PTA process shows superior hardness and erosion properties.
PB  - Springer India, New Delhi
T2  - Transactions of The Indian Institute of Metals
T1  - Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes
EP  - 271
IS  - 1
SP  - 259
VL  - 73
DO  - 10.1007/s12666-019-01831-9
ER  - 

@article{
author = "Maslarević, Aleksandar and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Maksimović, Vesna and Pavkov, Vladimir",
year = "2020",
abstract = "In this study, two erosion protection MMC coatings with WC particles were deposited by the plasma transferred arc (PTA) welding. One of the coatings with tungsten carbide WC in the NiBSi matrix (WC/NiBSi), and the second coating WC in NiCrBSi matrix (WC/NiCrBSi) was deposited by the flame spray process on the same substrate material S235JR steel. Experiments were performed using a gas blast sand erosion test facility with high-velocity erodent particles impact (approximately 100 m/s) at different particle impact angles (20 degrees-45 degrees), with an objective to study erosion wear characteristics and mass loss of two MMC coatings. Microstructural characterization of MMC coatings was done by scanning electron microscope equipped with energy-dispersive X-ray spectroscopy, whereas X-ray diffraction analysis was used for identification of present phases. The hardness of coatings was determined by Vickers hardness measurements. WC/NiBSi obtained by the PTA process shows superior hardness and erosion properties.",
publisher = "Springer India, New Delhi",
journal = "Transactions of The Indian Institute of Metals",
title = "Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes",
pages = "271-259",
number = "1",
volume = "73",
doi = "10.1007/s12666-019-01831-9"
}

Maslarević, A., Bakić, G., Đukić, M., Rajičić, B., Maksimović, V.,& Pavkov, V.. (2020). Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes. in Transactions of The Indian Institute of Metals
Springer India, New Delhi., 73(1), 259-271.
https://doi.org/10.1007/s12666-019-01831-9

Maslarević A, Bakić G, Đukić M, Rajičić B, Maksimović V, Pavkov V. Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes. in Transactions of The Indian Institute of Metals. 2020;73(1):259-271.
doi:10.1007/s12666-019-01831-9 .

Maslarević, Aleksandar, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Maksimović, Vesna, Pavkov, Vladimir, "Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes" in Transactions of The Indian Institute of Metals, 73, no. 1 (2020):259-271,
https://doi.org/10.1007/s12666-019-01831-9 . .

TY  - JOUR
AU  - Đukić, Miloš
AU  - Bakić, Gordana
AU  - Zeravčić-Šijački, Vera
AU  - Sedmak, Aleksandar
AU  - Rajičić, Bratislav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3050
AB  - Component failures due to the hydrogen embrittlement (HE) were observed in different industrial systems, including high-pressure hydrogen storage tanks, aircraft components, high-strength alloy components, and high-strength steel fasteners. The contemporary approach in studying the effects of hydrogen on the mechanical properties of steels and iron at different scales is based on the implementation of various multiscale (macro, micro-meso, and nano-atomic) modeling approaches and the applications of advanced experimental methods. A large number of contemporary studies confirmed the multiple effects and activity of different HE mechanisms in steels and iron. The coexistence and synergistic activity - concurrent action and effects in a cooperative manner of different HE mechanisms, including the hydrogen-enhanced localized plasticity (HELP) and the hydrogen-enhanced decohesion (HEDE), were recently detected and confirmed through computations-simulations, as well as experimentally in different grades of steel. However, the critical evaluation and quantification of synergy between the HELP and HEDE mechanisms, enhanced plasticity and decohesion, hydrogen-deformation/dislocation interactions and their simultaneous effect on the mechanical properties (hardening and softening), still do not exist. In this review paper, the multifaceted nature of the synergistic interplay of HE mechanisms is covered through extensive literature overview regarding the chronological development of ideas related to the HELP + HEDE concept and HELP mediated HEDE model. The particular emphasis is given to the proposal of the novel and unified HELP + HEDE model based on the specific microstructural mapping of the dominant HE mechanisms with implications on the fracture process and resulting hydrogen-assisted fracture modes. Most of up-to-date experimental and modeling approaches, current trends and future challenges in the investigation of the synergistic interplay of HE mechanisms in different grades of steel, including the most advanced, and iron, are also included and critically discussed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Fracture Mechanics
T1  - The synergistic action and interplay of hydrogen embrittlement mechanisms in steels and iron: Localized plasticity and decohesion
VL  - 216
DO  - 10.1016/j.engfracmech.2019.106528
ER  - 

@article{
author = "Đukić, Miloš and Bakić, Gordana and Zeravčić-Šijački, Vera and Sedmak, Aleksandar and Rajičić, Bratislav",
year = "2019",
abstract = "Component failures due to the hydrogen embrittlement (HE) were observed in different industrial systems, including high-pressure hydrogen storage tanks, aircraft components, high-strength alloy components, and high-strength steel fasteners. The contemporary approach in studying the effects of hydrogen on the mechanical properties of steels and iron at different scales is based on the implementation of various multiscale (macro, micro-meso, and nano-atomic) modeling approaches and the applications of advanced experimental methods. A large number of contemporary studies confirmed the multiple effects and activity of different HE mechanisms in steels and iron. The coexistence and synergistic activity - concurrent action and effects in a cooperative manner of different HE mechanisms, including the hydrogen-enhanced localized plasticity (HELP) and the hydrogen-enhanced decohesion (HEDE), were recently detected and confirmed through computations-simulations, as well as experimentally in different grades of steel. However, the critical evaluation and quantification of synergy between the HELP and HEDE mechanisms, enhanced plasticity and decohesion, hydrogen-deformation/dislocation interactions and their simultaneous effect on the mechanical properties (hardening and softening), still do not exist. In this review paper, the multifaceted nature of the synergistic interplay of HE mechanisms is covered through extensive literature overview regarding the chronological development of ideas related to the HELP + HEDE concept and HELP mediated HEDE model. The particular emphasis is given to the proposal of the novel and unified HELP + HEDE model based on the specific microstructural mapping of the dominant HE mechanisms with implications on the fracture process and resulting hydrogen-assisted fracture modes. Most of up-to-date experimental and modeling approaches, current trends and future challenges in the investigation of the synergistic interplay of HE mechanisms in different grades of steel, including the most advanced, and iron, are also included and critically discussed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Fracture Mechanics",
title = "The synergistic action and interplay of hydrogen embrittlement mechanisms in steels and iron: Localized plasticity and decohesion",
volume = "216",
doi = "10.1016/j.engfracmech.2019.106528"
}

Đukić, M., Bakić, G., Zeravčić-Šijački, V., Sedmak, A.,& Rajičić, B.. (2019). The synergistic action and interplay of hydrogen embrittlement mechanisms in steels and iron: Localized plasticity and decohesion. in Engineering Fracture Mechanics
Pergamon-Elsevier Science Ltd, Oxford., 216.
https://doi.org/10.1016/j.engfracmech.2019.106528

Đukić M, Bakić G, Zeravčić-Šijački V, Sedmak A, Rajičić B. The synergistic action and interplay of hydrogen embrittlement mechanisms in steels and iron: Localized plasticity and decohesion. in Engineering Fracture Mechanics. 2019;216.
doi:10.1016/j.engfracmech.2019.106528 .

Đukić, Miloš, Bakić, Gordana, Zeravčić-Šijački, Vera, Sedmak, Aleksandar, Rajičić, Bratislav, "The synergistic action and interplay of hydrogen embrittlement mechanisms in steels and iron: Localized plasticity and decohesion" in Engineering Fracture Mechanics, 216 (2019),
https://doi.org/10.1016/j.engfracmech.2019.106528 . .

TY  - CONF
AU  - Đukić, Miloš
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Šijački Žeravčić, Vera
AU  - Sedmak, Aleksandar
AU  - Mitrović, Radivoje
AU  - Mišković, Žarko
PY  - 2018
UR  - http://www.ecf22.rs/docs/Book%20of%20Abstracts%20ECF22.pdf
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5518
AB  - Hydrogen damage includes a wide range of environmental types of failure, hydrogen assisted mechanical degradation
processes - hydrogen embrittlement (HE), and hydrogen-material interactions, including material microstructural changes,
caused by the presence of hydrogen in metals. The connection between microstructure-based behaviors of materials and the
effects of hydrogen on its macroscopic measurable properties is of the utmost importance in order to provide a unified model
for HE in metallic materials, including steels.
The simultaneous activity and synergistic interplay of the hydrogen-enhanced localized plasticity (HELP) and hydrogenenhanced
decohesion (HEDE) mechanisms of HE (HELP+HEDE) was recently detected and confirmed trough simulations
(modeling), and also experimentally, in the case of different materials, such as low carbon steels, dual-phase steels, ultra
high strength steels, advanced high-strength steels, martensitic steels, martensitic stainless steels, nickel, and nickel-based
alloys. This complex interaction dependence between the simultaneously active micro-mechanisms of HE, degree of
mechanical properties degradation, hydrogen concentration/distribution, and temperature is particularly pronounced in the
case of industrial components that are exposed to hydrogen during operation at different temperatures and from different
sources.
This paper presents an overview about the simultaneous activity and synergistic interplay of HELP+HEDE mechanisms in
metallic materials and an in-depth study of the model based on the correlation of mechanical properties to scanning electron
microscopy fractography analysis of fracture surfaces in the presence of simultaneously active hydrogen embrittlement
micro-mechanisms (HELP+HEDE) in a low carbon steel.
C3  - 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts
T1  - The synergistic interplay of the localized plasticity (HELP) and decohesion (HEDE) mechanisms of hydrogen embrittlement in steels: effects on macromechanical properties
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5518
ER  - 

@conference{
author = "Đukić, Miloš and Bakić, Gordana and Rajičić, Bratislav and Šijački Žeravčić, Vera and Sedmak, Aleksandar and Mitrović, Radivoje and Mišković, Žarko",
year = "2018",
abstract = "Hydrogen damage includes a wide range of environmental types of failure, hydrogen assisted mechanical degradation
processes - hydrogen embrittlement (HE), and hydrogen-material interactions, including material microstructural changes,
caused by the presence of hydrogen in metals. The connection between microstructure-based behaviors of materials and the
effects of hydrogen on its macroscopic measurable properties is of the utmost importance in order to provide a unified model
for HE in metallic materials, including steels.
The simultaneous activity and synergistic interplay of the hydrogen-enhanced localized plasticity (HELP) and hydrogenenhanced
decohesion (HEDE) mechanisms of HE (HELP+HEDE) was recently detected and confirmed trough simulations
(modeling), and also experimentally, in the case of different materials, such as low carbon steels, dual-phase steels, ultra
high strength steels, advanced high-strength steels, martensitic steels, martensitic stainless steels, nickel, and nickel-based
alloys. This complex interaction dependence between the simultaneously active micro-mechanisms of HE, degree of
mechanical properties degradation, hydrogen concentration/distribution, and temperature is particularly pronounced in the
case of industrial components that are exposed to hydrogen during operation at different temperatures and from different
sources.
This paper presents an overview about the simultaneous activity and synergistic interplay of HELP+HEDE mechanisms in
metallic materials and an in-depth study of the model based on the correlation of mechanical properties to scanning electron
microscopy fractography analysis of fracture surfaces in the presence of simultaneously active hydrogen embrittlement
micro-mechanisms (HELP+HEDE) in a low carbon steel.",
journal = "22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts",
title = "The synergistic interplay of the localized plasticity (HELP) and decohesion (HEDE) mechanisms of hydrogen embrittlement in steels: effects on macromechanical properties",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5518"
}

Đukić, M., Bakić, G., Rajičić, B., Šijački Žeravčić, V., Sedmak, A., Mitrović, R.,& Mišković, Ž.. (2018). The synergistic interplay of the localized plasticity (HELP) and decohesion (HEDE) mechanisms of hydrogen embrittlement in steels: effects on macromechanical properties. in 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts.
https://hdl.handle.net/21.15107/rcub_machinery_5518

Đukić M, Bakić G, Rajičić B, Šijački Žeravčić V, Sedmak A, Mitrović R, Mišković Ž. The synergistic interplay of the localized plasticity (HELP) and decohesion (HEDE) mechanisms of hydrogen embrittlement in steels: effects on macromechanical properties. in 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_5518 .

Đukić, Miloš, Bakić, Gordana, Rajičić, Bratislav, Šijački Žeravčić, Vera, Sedmak, Aleksandar, Mitrović, Radivoje, Mišković, Žarko, "The synergistic interplay of the localized plasticity (HELP) and decohesion (HEDE) mechanisms of hydrogen embrittlement in steels: effects on macromechanical properties" in 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts (2018),
https://hdl.handle.net/21.15107/rcub_machinery_5518 .

TY  - CONF
AU  - Bakić, Gordana
AU  - Cvetković, Ivana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Stanojević, Petar
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5314
AB  - Corrosion is irreversible process of material degradation. Due to the adverse effects on characteristics of the operating
material, especially in boiler tubing systems, this is one of the most important problems in the functioning of thermal power
plants and it is considered to be the main cause of many outages. The basis and the first step in process of equipment life
estimation done by using common methods, and determination of the probability of failure is the calculation of stresses in
tubes caused by presence of corrosion damage. In this paper are presented stress analyses attained by deterministic method
and finite element method analyses for tubes with internal corrosion damage. Those analyses were performed on a large set
of data collected for the first stage of re-heater at 350MW thermal power plant unit, which was in service for app 60000
hours. Comparison of stress analyses results was done and obtained difference was analyzed, as well as implications of
obtained results on integrity analyses of corrosion damaged tubes. Influence of gained results on remaining life assessment
and probability of failure results were studied as well, since these considerations are important for the risk-based inspection
and maintenance programs.
PB  - Society for Structural Integrity and Life - Prof. Dr Stojan Sedmak (DIVK), Beograd
C3  - 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts
T1  - Modeling of internal corrosion damage on boiler tubes for integrity analyses
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5314
ER  - 

@conference{
author = "Bakić, Gordana and Cvetković, Ivana and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar and Stanojević, Petar",
year = "2018",
abstract = "Corrosion is irreversible process of material degradation. Due to the adverse effects on characteristics of the operating
material, especially in boiler tubing systems, this is one of the most important problems in the functioning of thermal power
plants and it is considered to be the main cause of many outages. The basis and the first step in process of equipment life
estimation done by using common methods, and determination of the probability of failure is the calculation of stresses in
tubes caused by presence of corrosion damage. In this paper are presented stress analyses attained by deterministic method
and finite element method analyses for tubes with internal corrosion damage. Those analyses were performed on a large set
of data collected for the first stage of re-heater at 350MW thermal power plant unit, which was in service for app 60000
hours. Comparison of stress analyses results was done and obtained difference was analyzed, as well as implications of
obtained results on integrity analyses of corrosion damaged tubes. Influence of gained results on remaining life assessment
and probability of failure results were studied as well, since these considerations are important for the risk-based inspection
and maintenance programs.",
publisher = "Society for Structural Integrity and Life - Prof. Dr Stojan Sedmak (DIVK), Beograd",
journal = "22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts",
title = "Modeling of internal corrosion damage on boiler tubes for integrity analyses",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5314"
}

Bakić, G., Cvetković, I., Đukić, M., Rajičić, B., Maslarević, A.,& Stanojević, P.. (2018). Modeling of internal corrosion damage on boiler tubes for integrity analyses. in 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts
Society for Structural Integrity and Life - Prof. Dr Stojan Sedmak (DIVK), Beograd..
https://hdl.handle.net/21.15107/rcub_machinery_5314

Bakić G, Cvetković I, Đukić M, Rajičić B, Maslarević A, Stanojević P. Modeling of internal corrosion damage on boiler tubes for integrity analyses. in 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_5314 .

Bakić, Gordana, Cvetković, Ivana, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, Stanojević, Petar, "Modeling of internal corrosion damage on boiler tubes for integrity analyses" in 22nd European Conference on Fracture - ECF22, Loading and Environmental effects on Structural Integrity, Book of Abstracts (2018),
https://hdl.handle.net/21.15107/rcub_machinery_5314 .

TY  - CONF
AU  - Đorđević, Branislav
AU  - Bakić, Gordana
AU  - Jeremić, Lazar
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Sedmak, Simon
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6265
AB  - Cracks and other defects that can occur in pressure vessel have been a significant practical problem for the integrity of such vessels for a very long time, and these defects can initiate and propagate due to various factors, such as the development technology or manufacturing processes, welding activities, exploitation conditions to which the vessel is subjected, or environmental effects. For some of the previously mentioned influences that can affect crack initiation it is impossible to predict whether or not they will cause problems, since they depend on several factors. In this paper, the effect of exploitation conditions and welding of starting pressure vessels on crack initiation and propagation is presented. The starting pressure vessel is a part of 
 he boiler installation within the Obrenovac thermal power-plant, and is used for moisture separation. The crack was located in the welded joint between one of the connecting branches and the starting pressure vessel, which was subjected to relatively variable exploitation
conditions. Effects that could lead to crack initiation and propagation were analysed, along with potential solutions that could help in avoiding these issues. Short theoretical reviews of requirements that must be met by pressure vessels (in terms of standards) are shown, as well as the theoretical observations related to the effect of welding activities and the consequences of defects that could occur.
C3  - International Conference on New Trends in Fatigue and Fracture
T1  - The Effects of Exploitation Conditions and Welding on Crack Initiation and Propagation in a Starting Pressure Vessel
EP  - 170
SP  - 167
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6265
ER  - 

@conference{
author = "Đorđević, Branislav and Bakić, Gordana and Jeremić, Lazar and Đukić, Miloš and Rajičić, Bratislav and Sedmak, Simon",
year = "2018",
abstract = "Cracks and other defects that can occur in pressure vessel have been a significant practical problem for the integrity of such vessels for a very long time, and these defects can initiate and propagate due to various factors, such as the development technology or manufacturing processes, welding activities, exploitation conditions to which the vessel is subjected, or environmental effects. For some of the previously mentioned influences that can affect crack initiation it is impossible to predict whether or not they will cause problems, since they depend on several factors. In this paper, the effect of exploitation conditions and welding of starting pressure vessels on crack initiation and propagation is presented. The starting pressure vessel is a part of 
 he boiler installation within the Obrenovac thermal power-plant, and is used for moisture separation. The crack was located in the welded joint between one of the connecting branches and the starting pressure vessel, which was subjected to relatively variable exploitation
conditions. Effects that could lead to crack initiation and propagation were analysed, along with potential solutions that could help in avoiding these issues. Short theoretical reviews of requirements that must be met by pressure vessels (in terms of standards) are shown, as well as the theoretical observations related to the effect of welding activities and the consequences of defects that could occur.",
journal = "International Conference on New Trends in Fatigue and Fracture",
title = "The Effects of Exploitation Conditions and Welding on Crack Initiation and Propagation in a Starting Pressure Vessel",
pages = "170-167",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6265"
}

Đorđević, B., Bakić, G., Jeremić, L., Đukić, M., Rajičić, B.,& Sedmak, S.. (2018). The Effects of Exploitation Conditions and Welding on Crack Initiation and Propagation in a Starting Pressure Vessel. in International Conference on New Trends in Fatigue and Fracture, 167-170.
https://hdl.handle.net/21.15107/rcub_machinery_6265

Đorđević B, Bakić G, Jeremić L, Đukić M, Rajičić B, Sedmak S. The Effects of Exploitation Conditions and Welding on Crack Initiation and Propagation in a Starting Pressure Vessel. in International Conference on New Trends in Fatigue and Fracture. 2018;:167-170.
https://hdl.handle.net/21.15107/rcub_machinery_6265 .

Đorđević, Branislav, Bakić, Gordana, Jeremić, Lazar, Đukić, Miloš, Rajičić, Bratislav, Sedmak, Simon, "The Effects of Exploitation Conditions and Welding on Crack Initiation and Propagation in a Starting Pressure Vessel" in International Conference on New Trends in Fatigue and Fracture (2018):167-170,
https://hdl.handle.net/21.15107/rcub_machinery_6265 .

TY  - JOUR
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maksimović, Vesna
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2796
AB  - Parts of industrial machines and structures are often exposed to the action of aggressive environments, which in a short period of time can provoke the loss of their integrity. It is well known that for extending the service life against erosion and corrosion, protection of the exposed structure zone by coating is frequently used. Various application methods of protective coatings are applied, and the most common are welding and thermal spraying processes. The aim of this study was characterization of coatings made of stainless steel 316L, widely used in chemical and petrochemical industries. The coating was applied on a structural steel S235JR by plasma transferred arc using powder as a filler material. Due to a number of advantages, the plasma transferred arc (PTA) surfacing process has found significant usages in the field of surface protection. This paper presents results of hardness measurements in characteristic zones of the coating and the base material, as well as microstructural characterization of coatings using optical and scanning electron microscopy. Results of EDS analysis of the coating and hardness measurements indicated that a relatively high dilution (26.1 %) of the base material (BM) and the filler material (FM) occurred in a very narrow zone above the fusion line, and thus did not significantly affect the chemical composition of the rest of the coating. Also, erosion resistance tests of coatings were performed by changing the basic functional parameters that is the impact angle and the speed of erodent particles. It was observed that the erosion resistance of the coating material decreases approximately linearly with the increase of the particle speed. Also, with the increase of the impact
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska Industrija
T1  - Characterization of a coating 316l applied by plasma transferred arc
EP  - 147
IS  - 3
SP  - 139
VL  - 72
DO  - 10.2298/HEMIND170928005M
ER  - 

@article{
author = "Maslarević, Aleksandar and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Maksimović, Vesna",
year = "2018",
abstract = "Parts of industrial machines and structures are often exposed to the action of aggressive environments, which in a short period of time can provoke the loss of their integrity. It is well known that for extending the service life against erosion and corrosion, protection of the exposed structure zone by coating is frequently used. Various application methods of protective coatings are applied, and the most common are welding and thermal spraying processes. The aim of this study was characterization of coatings made of stainless steel 316L, widely used in chemical and petrochemical industries. The coating was applied on a structural steel S235JR by plasma transferred arc using powder as a filler material. Due to a number of advantages, the plasma transferred arc (PTA) surfacing process has found significant usages in the field of surface protection. This paper presents results of hardness measurements in characteristic zones of the coating and the base material, as well as microstructural characterization of coatings using optical and scanning electron microscopy. Results of EDS analysis of the coating and hardness measurements indicated that a relatively high dilution (26.1 %) of the base material (BM) and the filler material (FM) occurred in a very narrow zone above the fusion line, and thus did not significantly affect the chemical composition of the rest of the coating. Also, erosion resistance tests of coatings were performed by changing the basic functional parameters that is the impact angle and the speed of erodent particles. It was observed that the erosion resistance of the coating material decreases approximately linearly with the increase of the particle speed. Also, with the increase of the impact",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska Industrija",
title = "Characterization of a coating 316l applied by plasma transferred arc",
pages = "147-139",
number = "3",
volume = "72",
doi = "10.2298/HEMIND170928005M"
}

Maslarević, A., Bakić, G., Đukić, M., Rajičić, B.,& Maksimović, V.. (2018). Characterization of a coating 316l applied by plasma transferred arc. in Hemijska Industrija
Savez hemijskih inženjera, Beograd., 72(3), 139-147.
https://doi.org/10.2298/HEMIND170928005M

Maslarević A, Bakić G, Đukić M, Rajičić B, Maksimović V. Characterization of a coating 316l applied by plasma transferred arc. in Hemijska Industrija. 2018;72(3):139-147.
doi:10.2298/HEMIND170928005M .

Maslarević, Aleksandar, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Maksimović, Vesna, "Characterization of a coating 316l applied by plasma transferred arc" in Hemijska Industrija, 72, no. 3 (2018):139-147,
https://doi.org/10.2298/HEMIND170928005M . .

TY  - CONF
AU  - Mišković, Žarko
AU  - Mitrović, Radivoje
AU  - Stamenić, Zoran
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2805
AB  - The proper interference fit between the joined parts is a prerequisite for an effective pressure joint. The main purpose of the pressure joint is to transfer tangential, radial and axial loads between the joined parts. In order to provide proper functioning of the machine assembly (whose component parts are connected by the pressure joints), i.e. the transfer of loads without skidding, it is essential to determine the pressure joints interference fit parameters. The new methodology for the conveyor idlers pressure joints quality control is presented in this paper. The procedure for the analytical determination of the expected disassembling force (limiting value) in the pressure joints between the shaft rolling bearing and the bearing idler shell is described in detail. The analytically calculated boundary values are compared with the experimental ones. According to the presented criteria, the evaluation of the conveyor idler fits quality was performed and reliable conclusions were successfully adopted.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
T1  - The development and application of the new methodology for conveyor idlers fits testing
EP  - 2151
SP  - 2143
VL  - 13
DO  - 10.1016/j.prostr.2018.12.150
ER  - 

@conference{
author = "Mišković, Žarko and Mitrović, Radivoje and Stamenić, Zoran and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav",
year = "2018",
abstract = "The proper interference fit between the joined parts is a prerequisite for an effective pressure joint. The main purpose of the pressure joint is to transfer tangential, radial and axial loads between the joined parts. In order to provide proper functioning of the machine assembly (whose component parts are connected by the pressure joints), i.e. the transfer of loads without skidding, it is essential to determine the pressure joints interference fit parameters. The new methodology for the conveyor idlers pressure joints quality control is presented in this paper. The procedure for the analytical determination of the expected disassembling force (limiting value) in the pressure joints between the shaft rolling bearing and the bearing idler shell is described in detail. The analytically calculated boundary values are compared with the experimental ones. According to the presented criteria, the evaluation of the conveyor idler fits quality was performed and reliable conclusions were successfully adopted.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity",
title = "The development and application of the new methodology for conveyor idlers fits testing",
pages = "2151-2143",
volume = "13",
doi = "10.1016/j.prostr.2018.12.150"
}

Mišković, Ž., Mitrović, R., Stamenić, Z., Bakić, G., Đukić, M.,& Rajičić, B.. (2018). The development and application of the new methodology for conveyor idlers fits testing. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
Elsevier Science Bv, Amsterdam., 13, 2143-2151.
https://doi.org/10.1016/j.prostr.2018.12.150

Mišković Ž, Mitrović R, Stamenić Z, Bakić G, Đukić M, Rajičić B. The development and application of the new methodology for conveyor idlers fits testing. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity. 2018;13:2143-2151.
doi:10.1016/j.prostr.2018.12.150 .

Mišković, Žarko, Mitrović, Radivoje, Stamenić, Zoran, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, "The development and application of the new methodology for conveyor idlers fits testing" in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity, 13 (2018):2143-2151,
https://doi.org/10.1016/j.prostr.2018.12.150 . .

TY  - CONF
AU  - Đukić, Miloš
AU  - Bakić, Gordana
AU  - Šijački Žeravčić, Vera
AU  - Rajičić, Bratislav
AU  - Sedmak, Aleksandar
AU  - Mitrović, Radivoje
AU  - Mišković, Žarko
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5017
AB  - A large number of contemporary studies about hydrogen embrittlement confirmed the multiple effects of hydrogen and activity of the different hydrogen embrittlement mechanisms in low carbon steels. However, critical evaluation and quantification of the synergy between the hydrogen-enhanced localized plasticity (HELP) and decohesion-based (HEDE) mechanisms, and their combined effect on macromechanical properties, still does not exist. This paper focuses on a structural integrity models for hydrogen embrittlement of low carbon St.20 (AISI 1020) steel in the
presence of simultaneously active hydrogen embrittlement micro-mechanisms.
PB  - International Conference on Fracture
C3  - ICF 2017 - 14th International Conference on Fracture
T1  - A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5017
ER  - 

@conference{
author = "Đukić, Miloš and Bakić, Gordana and Šijački Žeravčić, Vera and Rajičić, Bratislav and Sedmak, Aleksandar and Mitrović, Radivoje and Mišković, Žarko",
year = "2017",
abstract = "A large number of contemporary studies about hydrogen embrittlement confirmed the multiple effects of hydrogen and activity of the different hydrogen embrittlement mechanisms in low carbon steels. However, critical evaluation and quantification of the synergy between the hydrogen-enhanced localized plasticity (HELP) and decohesion-based (HEDE) mechanisms, and their combined effect on macromechanical properties, still does not exist. This paper focuses on a structural integrity models for hydrogen embrittlement of low carbon St.20 (AISI 1020) steel in the
presence of simultaneously active hydrogen embrittlement micro-mechanisms.",
publisher = "International Conference on Fracture",
journal = "ICF 2017 - 14th International Conference on Fracture",
title = "A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5017"
}

Đukić, M., Bakić, G., Šijački Žeravčić, V., Rajičić, B., Sedmak, A., Mitrović, R.,& Mišković, Ž.. (2017). A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties. in ICF 2017 - 14th International Conference on Fracture
International Conference on Fracture..
https://hdl.handle.net/21.15107/rcub_machinery_5017

Đukić M, Bakić G, Šijački Žeravčić V, Rajičić B, Sedmak A, Mitrović R, Mišković Ž. A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties. in ICF 2017 - 14th International Conference on Fracture. 2017;.
https://hdl.handle.net/21.15107/rcub_machinery_5017 .

Đukić, Miloš, Bakić, Gordana, Šijački Žeravčić, Vera, Rajičić, Bratislav, Sedmak, Aleksandar, Mitrović, Radivoje, Mišković, Žarko, "A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties" in ICF 2017 - 14th International Conference on Fracture (2017),
https://hdl.handle.net/21.15107/rcub_machinery_5017 .

TY  - CHAP
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Zeravčić-Šijački, Vera
AU  - Maslarević, Aleksandar
AU  - Radović, Miladin
AU  - Maksimović, Vesna
AU  - Milošević, Nenad
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2538
AB  - The heat resistant tempered martensite ferritic steel X20CrMoV121 (DIN) has been extensively used within the last few decades as a material for boiler tubing systems and pipelines in thermal power plants (TPP). Long-term behavior of this steel is vastly researched and very well known, but main disadvantage is its poor weldability. In situ welding of martensitic steels is always challenging task and is usually quite difficult to implement properly in a short time, during forced outages of TPP. In this paper, characterization and mechanical properties of undermatch welded joint made during partial replacement of boiler outlet superheater (SH) in TPP by austenitic filler material, after 10 years of service are presented. Due to "cold" technique of welding, which does not required post weld heat treatment, this procedure were regular and widely used repair welding technique in two TPP (620 MW) units. In the purpose of comparison, two other type of matching welding joints of the same SH were also characterized: shop welded joint made by electrical resistance flash butt welding, as well as field welded joint made by gas tungsten arc welding during assembling of SH, which were both in service approximately 150,000 h.
PB  - Springer-Verlag Berlin, Berlin
T2  - Fracture At All Scales
T1  - Characterization of Tube Repair Weld in Thermal Power Plant Made of a 12% Cr Tempered Martensite Ferritic Steel
EP  - 169
SP  - 151
DO  - 10.1007/978-3-319-32634-4_8
ER  - 

@inbook{
author = "Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Zeravčić-Šijački, Vera and Maslarević, Aleksandar and Radović, Miladin and Maksimović, Vesna and Milošević, Nenad",
year = "2017",
abstract = "The heat resistant tempered martensite ferritic steel X20CrMoV121 (DIN) has been extensively used within the last few decades as a material for boiler tubing systems and pipelines in thermal power plants (TPP). Long-term behavior of this steel is vastly researched and very well known, but main disadvantage is its poor weldability. In situ welding of martensitic steels is always challenging task and is usually quite difficult to implement properly in a short time, during forced outages of TPP. In this paper, characterization and mechanical properties of undermatch welded joint made during partial replacement of boiler outlet superheater (SH) in TPP by austenitic filler material, after 10 years of service are presented. Due to "cold" technique of welding, which does not required post weld heat treatment, this procedure were regular and widely used repair welding technique in two TPP (620 MW) units. In the purpose of comparison, two other type of matching welding joints of the same SH were also characterized: shop welded joint made by electrical resistance flash butt welding, as well as field welded joint made by gas tungsten arc welding during assembling of SH, which were both in service approximately 150,000 h.",
publisher = "Springer-Verlag Berlin, Berlin",
journal = "Fracture At All Scales",
booktitle = "Characterization of Tube Repair Weld in Thermal Power Plant Made of a 12% Cr Tempered Martensite Ferritic Steel",
pages = "169-151",
doi = "10.1007/978-3-319-32634-4_8"
}

Bakić, G., Đukić, M., Rajičić, B., Zeravčić-Šijački, V., Maslarević, A., Radović, M., Maksimović, V.,& Milošević, N.. (2017). Characterization of Tube Repair Weld in Thermal Power Plant Made of a 12% Cr Tempered Martensite Ferritic Steel. in Fracture At All Scales
Springer-Verlag Berlin, Berlin., 151-169.
https://doi.org/10.1007/978-3-319-32634-4_8

Bakić G, Đukić M, Rajičić B, Zeravčić-Šijački V, Maslarević A, Radović M, Maksimović V, Milošević N. Characterization of Tube Repair Weld in Thermal Power Plant Made of a 12% Cr Tempered Martensite Ferritic Steel. in Fracture At All Scales. 2017;:151-169.
doi:10.1007/978-3-319-32634-4_8 .

Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Zeravčić-Šijački, Vera, Maslarević, Aleksandar, Radović, Miladin, Maksimović, Vesna, Milošević, Nenad, "Characterization of Tube Repair Weld in Thermal Power Plant Made of a 12% Cr Tempered Martensite Ferritic Steel" in Fracture At All Scales (2017):151-169,
https://doi.org/10.1007/978-3-319-32634-4_8 . .

TY  - CONF
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Maksimović, Vesna
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4431
C3  - 4th Conference of the Serbian Society for Ceramic Materials, Programme and the book of abstracts
T1  - Aplication of Metal Matrix Composite Coatings in Thermal Power Plants
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4431
ER  - 

@conference{
author = "Bakić, Gordana and Đukić, Miloš and Maksimović, Vesna and Rajičić, Bratislav and Maslarević, Aleksandar",
year = "2017",
journal = "4th Conference of the Serbian Society for Ceramic Materials, Programme and the book of abstracts",
title = "Aplication of Metal Matrix Composite Coatings in Thermal Power Plants",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4431"
}

Bakić, G., Đukić, M., Maksimović, V., Rajičić, B.,& Maslarević, A.. (2017). Aplication of Metal Matrix Composite Coatings in Thermal Power Plants. in 4th Conference of the Serbian Society for Ceramic Materials, Programme and the book of abstracts.
https://hdl.handle.net/21.15107/rcub_machinery_4431

Bakić G, Đukić M, Maksimović V, Rajičić B, Maslarević A. Aplication of Metal Matrix Composite Coatings in Thermal Power Plants. in 4th Conference of the Serbian Society for Ceramic Materials, Programme and the book of abstracts. 2017;.
https://hdl.handle.net/21.15107/rcub_machinery_4431 .

Bakić, Gordana, Đukić, Miloš, Maksimović, Vesna, Rajičić, Bratislav, Maslarević, Aleksandar, "Aplication of Metal Matrix Composite Coatings in Thermal Power Plants" in 4th Conference of the Serbian Society for Ceramic Materials, Programme and the book of abstracts (2017),
https://hdl.handle.net/21.15107/rcub_machinery_4431 .

TY  - CONF
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Petrović, Aleksandar
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4513
AB  - Nanošenje zaštitnih prevlaka na mašinske delove nalazi sve širu i učestaliju
primenu u svim granama industrije. Osnovna funkcija zaštinih prevlaka je
produženje radnog veka mašinskih delova povećanjem otpornosti na eroziju,
abraziju, oksidaciju, koroziju itd. Hladna metalizacija je postupak nanošenja
dodatnog materijala u obliku praha u čvrstom stanju, na osnovni materijal
(podlogu). Čestice dodatnog materijala dovode se u struju gasa koji se kreće
velikim brzinama, pri čemu je temperatura struje gasa obavezno niža od
temperature topljenja dodatnog materijala. Zbog relativno niske temperature
u procesu nanošenja, ovim postupkom je moguće nanositi materijale koji su
podložni oksidaciji (Al, Cu, Ti itd.) i razlaganju (WC, SiC itd.) na visokim
temperaturama. U poređenju sa ostalim postupcima metalizacije, hladna
metalizacija izdvaja se kao postupak sa najnižom temperaturom u procesu
nanošenja prevlaka. Hladna metalizacija nalazi sve širu primenu u industriji,
pre svega zbog izuzetnog kvaliteta dobijenih prevlaka. U ovom radu opisan
je princip rada kao i područje primene postupka hladne metalizacije.
PB  - Belgrade : Singidunum University
C3  - Syntesis 2017 - International Scientific Conference Of IT And Business Related Research
T1  - Hladna metalizacija
DO  - 10.15308/Sinteza-2017-343-348
ER  - 

@conference{
author = "Maslarević, Aleksandar and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Petrović, Aleksandar",
year = "2017",
abstract = "Nanošenje zaštitnih prevlaka na mašinske delove nalazi sve širu i učestaliju
primenu u svim granama industrije. Osnovna funkcija zaštinih prevlaka je
produženje radnog veka mašinskih delova povećanjem otpornosti na eroziju,
abraziju, oksidaciju, koroziju itd. Hladna metalizacija je postupak nanošenja
dodatnog materijala u obliku praha u čvrstom stanju, na osnovni materijal
(podlogu). Čestice dodatnog materijala dovode se u struju gasa koji se kreće
velikim brzinama, pri čemu je temperatura struje gasa obavezno niža od
temperature topljenja dodatnog materijala. Zbog relativno niske temperature
u procesu nanošenja, ovim postupkom je moguće nanositi materijale koji su
podložni oksidaciji (Al, Cu, Ti itd.) i razlaganju (WC, SiC itd.) na visokim
temperaturama. U poređenju sa ostalim postupcima metalizacije, hladna
metalizacija izdvaja se kao postupak sa najnižom temperaturom u procesu
nanošenja prevlaka. Hladna metalizacija nalazi sve širu primenu u industriji,
pre svega zbog izuzetnog kvaliteta dobijenih prevlaka. U ovom radu opisan
je princip rada kao i područje primene postupka hladne metalizacije.",
publisher = "Belgrade : Singidunum University",
journal = "Syntesis 2017 - International Scientific Conference Of IT And Business Related Research",
title = "Hladna metalizacija",
doi = "10.15308/Sinteza-2017-343-348"
}

Maslarević, A., Bakić, G., Đukić, M., Rajičić, B.,& Petrović, A.. (2017). Hladna metalizacija. in Syntesis 2017 - International Scientific Conference Of IT And Business Related Research
Belgrade : Singidunum University..
https://doi.org/10.15308/Sinteza-2017-343-348

Maslarević A, Bakić G, Đukić M, Rajičić B, Petrović A. Hladna metalizacija. in Syntesis 2017 - International Scientific Conference Of IT And Business Related Research. 2017;.
doi:10.15308/Sinteza-2017-343-348 .

Maslarević, Aleksandar, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Petrović, Aleksandar, "Hladna metalizacija" in Syntesis 2017 - International Scientific Conference Of IT And Business Related Research (2017),
https://doi.org/10.15308/Sinteza-2017-343-348 . .

TY  - CONF
AU  - Đukić, Miloš
AU  - Bakić, Gordana
AU  - Šijački-Žeravčić, Vera
AU  - Rajičić, Bratislav
AU  - Sedmak, Aleksandar
AU  - Mitrović, Radivoje
AU  - Mišković, Žarko
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2683
AB  - A large number of contemporary studies about hydrogen embrittlement confirmed the multiple effects of hydrogen and activity of the different hydrogen embrittlement mechanisms in low carbon steels. However, critical evaluation and quantification of the synergy between the hydrogen-enhanced localized plasticity (HELP) and decohesion-based (HEDE) mechanisms, and their combined effect on macromechanical properties, still does not exist. This paper focuses on a structural integrity models for hydrogen embrittlement of low carbon St.20 (AISI 1020) steel in the presence of simultaneously active hydrogen embrittlement micro-mechanisms.
PB  - International Conference on Fracture
C3  - ICF 2017 - 14th International Conference on Fracture
T1  - A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties
EP  - 766
SP  - 765
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2683
ER  - 

@conference{
author = "Đukić, Miloš and Bakić, Gordana and Šijački-Žeravčić, Vera and Rajičić, Bratislav and Sedmak, Aleksandar and Mitrović, Radivoje and Mišković, Žarko",
year = "2017",
abstract = "A large number of contemporary studies about hydrogen embrittlement confirmed the multiple effects of hydrogen and activity of the different hydrogen embrittlement mechanisms in low carbon steels. However, critical evaluation and quantification of the synergy between the hydrogen-enhanced localized plasticity (HELP) and decohesion-based (HEDE) mechanisms, and their combined effect on macromechanical properties, still does not exist. This paper focuses on a structural integrity models for hydrogen embrittlement of low carbon St.20 (AISI 1020) steel in the presence of simultaneously active hydrogen embrittlement micro-mechanisms.",
publisher = "International Conference on Fracture",
journal = "ICF 2017 - 14th International Conference on Fracture",
title = "A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties",
pages = "766-765",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2683"
}

Đukić, M., Bakić, G., Šijački-Žeravčić, V., Rajičić, B., Sedmak, A., Mitrović, R.,& Mišković, Ž.. (2017). A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties. in ICF 2017 - 14th International Conference on Fracture
International Conference on Fracture., 1, 765-766.
https://hdl.handle.net/21.15107/rcub_machinery_2683

Đukić M, Bakić G, Šijački-Žeravčić V, Rajičić B, Sedmak A, Mitrović R, Mišković Ž. A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties. in ICF 2017 - 14th International Conference on Fracture. 2017;1:765-766.
https://hdl.handle.net/21.15107/rcub_machinery_2683 .

Đukić, Miloš, Bakić, Gordana, Šijački-Žeravčić, Vera, Rajičić, Bratislav, Sedmak, Aleksandar, Mitrović, Radivoje, Mišković, Žarko, "A structural integrity model for hydrogen embrittlement of low carbon steel and the combined effect of help and hede mechanisms on macromechanical properties" in ICF 2017 - 14th International Conference on Fracture, 1 (2017):765-766,
https://hdl.handle.net/21.15107/rcub_machinery_2683 .

TY  - CONF
AU  - Mitrović, Radivoje
AU  - Mišković, Žarko
AU  - Stamenić, Zoran
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2674
AB  - The most common way to transfer tangential and axial loads in different types of assemblies is by interference fits. It is essential to determine interference fit parameters of pressed joints, which provides a proper function of machine part, i.e. load transfer without skidding. The analyses, test methodology and results of experimental examination of the conveyor idler's interference fits are presented in this paper. The procedure of analytical determination of the expected force for fit disassembling has been described in detail: shaft - rolling bearing and bearing - idler shell. Those calculated values have been compared with experimental ones. According to the presented criteria, the evaluation of the conveyor idler press joints has been carried out.
PB  - International Conference on Fracture
C3  - ICF 2017 - 14th International Conference on Fracture
T1  - The new experimental testing methodology for conveyor idler's fits control
EP  - 901
SP  - 900
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2674
ER  - 

@conference{
author = "Mitrović, Radivoje and Mišković, Žarko and Stamenić, Zoran and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav",
year = "2017",
abstract = "The most common way to transfer tangential and axial loads in different types of assemblies is by interference fits. It is essential to determine interference fit parameters of pressed joints, which provides a proper function of machine part, i.e. load transfer without skidding. The analyses, test methodology and results of experimental examination of the conveyor idler's interference fits are presented in this paper. The procedure of analytical determination of the expected force for fit disassembling has been described in detail: shaft - rolling bearing and bearing - idler shell. Those calculated values have been compared with experimental ones. According to the presented criteria, the evaluation of the conveyor idler press joints has been carried out.",
publisher = "International Conference on Fracture",
journal = "ICF 2017 - 14th International Conference on Fracture",
title = "The new experimental testing methodology for conveyor idler's fits control",
pages = "901-900",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2674"
}

Mitrović, R., Mišković, Ž., Stamenić, Z., Bakić, G., Đukić, M.,& Rajičić, B.. (2017). The new experimental testing methodology for conveyor idler's fits control. in ICF 2017 - 14th International Conference on Fracture
International Conference on Fracture., 1, 900-901.
https://hdl.handle.net/21.15107/rcub_machinery_2674

Mitrović R, Mišković Ž, Stamenić Z, Bakić G, Đukić M, Rajičić B. The new experimental testing methodology for conveyor idler's fits control. in ICF 2017 - 14th International Conference on Fracture. 2017;1:900-901.
https://hdl.handle.net/21.15107/rcub_machinery_2674 .

Mitrović, Radivoje, Mišković, Žarko, Stamenić, Zoran, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, "The new experimental testing methodology for conveyor idler's fits control" in ICF 2017 - 14th International Conference on Fracture, 1 (2017):900-901,
https://hdl.handle.net/21.15107/rcub_machinery_2674 .

TY  - CONF
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Matić, M.
AU  - Maksimović, Vesna
AU  - Mitrović, Radivoje
AU  - Mišković, Žarko
AU  - Maslarević, Aleksandar
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2672
AB  - In the past decades, tempered martensitic ferritic steels with 9-12% chromium and containing carbide stabilizing elements have been widely used for components which operate within the creep range in power and industrial processing plants. The investigated samples made of X20CrMoV12-1 steel were taken from the main steam pipeline in thermal power plant after 250.000 h (545°C and 19MPa). The low values of impact toughness are the consequence of aging and weakening of grain boundaries, despite the fact that aging processes have not significant effects on the microstructural degradation and drop of the other mechanical properties.
PB  - International Conference on Fracture
C3  - ICF 2017 - 14th International Conference on Fracture
T1  - Material characterization of the main steam pipeline made of 12%Cr tempered martensite ferritic steel after prolonged service
EP  - 682
SP  - 681
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2672
ER  - 

@conference{
author = "Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Matić, M. and Maksimović, Vesna and Mitrović, Radivoje and Mišković, Žarko and Maslarević, Aleksandar",
year = "2017",
abstract = "In the past decades, tempered martensitic ferritic steels with 9-12% chromium and containing carbide stabilizing elements have been widely used for components which operate within the creep range in power and industrial processing plants. The investigated samples made of X20CrMoV12-1 steel were taken from the main steam pipeline in thermal power plant after 250.000 h (545°C and 19MPa). The low values of impact toughness are the consequence of aging and weakening of grain boundaries, despite the fact that aging processes have not significant effects on the microstructural degradation and drop of the other mechanical properties.",
publisher = "International Conference on Fracture",
journal = "ICF 2017 - 14th International Conference on Fracture",
title = "Material characterization of the main steam pipeline made of 12%Cr tempered martensite ferritic steel after prolonged service",
pages = "682-681",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2672"
}

Bakić, G., Đukić, M., Rajičić, B., Matić, M., Maksimović, V., Mitrović, R., Mišković, Ž.,& Maslarević, A.. (2017). Material characterization of the main steam pipeline made of 12%Cr tempered martensite ferritic steel after prolonged service. in ICF 2017 - 14th International Conference on Fracture
International Conference on Fracture., 1, 681-682.
https://hdl.handle.net/21.15107/rcub_machinery_2672

Bakić G, Đukić M, Rajičić B, Matić M, Maksimović V, Mitrović R, Mišković Ž, Maslarević A. Material characterization of the main steam pipeline made of 12%Cr tempered martensite ferritic steel after prolonged service. in ICF 2017 - 14th International Conference on Fracture. 2017;1:681-682.
https://hdl.handle.net/21.15107/rcub_machinery_2672 .

Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Matić, M., Maksimović, Vesna, Mitrović, Radivoje, Mišković, Žarko, Maslarević, Aleksandar, "Material characterization of the main steam pipeline made of 12%Cr tempered martensite ferritic steel after prolonged service" in ICF 2017 - 14th International Conference on Fracture, 1 (2017):681-682,
https://hdl.handle.net/21.15107/rcub_machinery_2672 .