Model of Simultaneous Action in a Cooperative Manner of Hydrogen Embrittlement Mechanisms (HELP + HEDE) in Low Carbon Steel and Their Effects on Mechanical Properties
Samo za registrovane korisnike
2018
Autori
Đukić, MilošBakić, Gordana
Rajičić, Bratislav
Šijački Žeravčić, Vera
Sedmak, Aleksandar
Mitrović, Radivoje
Mišković, Žarko
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The simultaneous activity and synergistic interplay of the hydrogen-enhanced localized plasticity (HELP) and hydrogenenhanced
decohesion (HEDE) mechanisms of hydrogen embrittlement (HE) was fully confirmed for the first time in low carbon
grade 20 - St.20 (or 20G, equivalent to UNS G10200, AISI 1020) steel specimens (boiler tubes) in situ enriched and embrittled by
hydrogen during boiler exploitation in a thermal power plant (TPP), and not only through lab experiment, simulation or modelling.
The proposed HELP+HEDE model of HE in low carbon steels is based on the correlation of mechanical properties to SEM
microscopy fractography analysis of fracture surfaces in the presence of simultaneous action in a cooperative manner of the
HELP and HEDE micro-mechanisms of HE depending on the local concentration of hydrogen in the investigated steel. Also, the
effect of hydrogen on the material mechanical properties and ductile to brittle fracture transition resulting from the concurrent
a...nd synergistic (HELP+HEDE) or competing action of HELP and HEDE mechanisms of HE is discussed. The effects and
correlations between microstructure, fractographic observations (light microscopy and scanning electron microscope - SEM)
and macro-mechanical testing data (tensile testing, impact strength on instrumented Charpy machine and hardness) are also
considered. This paper also gives an overview of the application of a model for structural integrity analysis of boiler evaporator
tubes in TPP made of low carbon steel exposed during operation to a local corrosion process and multiple hydrogen assisted
degradation processes. The proposed model enables enhanced predictive maintenance of industrial component systems.
Ključne reči:
Low carbon steel / Hydrogen embrittlement / Mechanism / Hydrogen-assisted cracking / Fractography / Impact strengthIzvor:
Third International Conference on Metals & Hydrogen, Steely Hydrogen 2018, 2018Izdavač:
- Ghent, Belgium
Kolekcije
Institucija/grupa
Mašinski fakultetTY - 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 - https://machinery.mas.bg.ac.rs/handle/123456789/5515 AB - The simultaneous activity and synergistic interplay of the hydrogen-enhanced localized plasticity (HELP) and hydrogenenhanced decohesion (HEDE) mechanisms of hydrogen embrittlement (HE) was fully confirmed for the first time in low carbon grade 20 - St.20 (or 20G, equivalent to UNS G10200, AISI 1020) steel specimens (boiler tubes) in situ enriched and embrittled by hydrogen during boiler exploitation in a thermal power plant (TPP), and not only through lab experiment, simulation or modelling. The proposed HELP+HEDE model of HE in low carbon steels is based on the correlation of mechanical properties to SEM microscopy fractography analysis of fracture surfaces in the presence of simultaneous action in a cooperative manner of the HELP and HEDE micro-mechanisms of HE depending on the local concentration of hydrogen in the investigated steel. Also, the effect of hydrogen on the material mechanical properties and ductile to brittle fracture transition resulting from the concurrent and synergistic (HELP+HEDE) or competing action of HELP and HEDE mechanisms of HE is discussed. The effects and correlations between microstructure, fractographic observations (light microscopy and scanning electron microscope - SEM) and macro-mechanical testing data (tensile testing, impact strength on instrumented Charpy machine and hardness) are also considered. This paper also gives an overview of the application of a model for structural integrity analysis of boiler evaporator tubes in TPP made of low carbon steel exposed during operation to a local corrosion process and multiple hydrogen assisted degradation processes. The proposed model enables enhanced predictive maintenance of industrial component systems. PB - Ghent, Belgium C3 - Third International Conference on Metals & Hydrogen, Steely Hydrogen 2018 T1 - Model of Simultaneous Action in a Cooperative Manner of Hydrogen Embrittlement Mechanisms (HELP + HEDE) in Low Carbon Steel and Their Effects on Mechanical Properties UR - https://hdl.handle.net/21.15107/rcub_machinery_5515 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 = "The simultaneous activity and synergistic interplay of the hydrogen-enhanced localized plasticity (HELP) and hydrogenenhanced decohesion (HEDE) mechanisms of hydrogen embrittlement (HE) was fully confirmed for the first time in low carbon grade 20 - St.20 (or 20G, equivalent to UNS G10200, AISI 1020) steel specimens (boiler tubes) in situ enriched and embrittled by hydrogen during boiler exploitation in a thermal power plant (TPP), and not only through lab experiment, simulation or modelling. The proposed HELP+HEDE model of HE in low carbon steels is based on the correlation of mechanical properties to SEM microscopy fractography analysis of fracture surfaces in the presence of simultaneous action in a cooperative manner of the HELP and HEDE micro-mechanisms of HE depending on the local concentration of hydrogen in the investigated steel. Also, the effect of hydrogen on the material mechanical properties and ductile to brittle fracture transition resulting from the concurrent and synergistic (HELP+HEDE) or competing action of HELP and HEDE mechanisms of HE is discussed. The effects and correlations between microstructure, fractographic observations (light microscopy and scanning electron microscope - SEM) and macro-mechanical testing data (tensile testing, impact strength on instrumented Charpy machine and hardness) are also considered. This paper also gives an overview of the application of a model for structural integrity analysis of boiler evaporator tubes in TPP made of low carbon steel exposed during operation to a local corrosion process and multiple hydrogen assisted degradation processes. The proposed model enables enhanced predictive maintenance of industrial component systems.", publisher = "Ghent, Belgium", journal = "Third International Conference on Metals & Hydrogen, Steely Hydrogen 2018", title = "Model of Simultaneous Action in a Cooperative Manner of Hydrogen Embrittlement Mechanisms (HELP + HEDE) in Low Carbon Steel and Their Effects on Mechanical Properties", url = "https://hdl.handle.net/21.15107/rcub_machinery_5515" }
Đukić, M., Bakić, G., Rajičić, B., Šijački Žeravčić, V., Sedmak, A., Mitrović, R.,& Mišković, Ž.. (2018). Model of Simultaneous Action in a Cooperative Manner of Hydrogen Embrittlement Mechanisms (HELP + HEDE) in Low Carbon Steel and Their Effects on Mechanical Properties. in Third International Conference on Metals & Hydrogen, Steely Hydrogen 2018 Ghent, Belgium.. https://hdl.handle.net/21.15107/rcub_machinery_5515
Đukić M, Bakić G, Rajičić B, Šijački Žeravčić V, Sedmak A, Mitrović R, Mišković Ž. Model of Simultaneous Action in a Cooperative Manner of Hydrogen Embrittlement Mechanisms (HELP + HEDE) in Low Carbon Steel and Their Effects on Mechanical Properties. in Third International Conference on Metals & Hydrogen, Steely Hydrogen 2018. 2018;. https://hdl.handle.net/21.15107/rcub_machinery_5515 .
Đukić, Miloš, Bakić, Gordana, Rajičić, Bratislav, Šijački Žeravčić, Vera, Sedmak, Aleksandar, Mitrović, Radivoje, Mišković, Žarko, "Model of Simultaneous Action in a Cooperative Manner of Hydrogen Embrittlement Mechanisms (HELP + HEDE) in Low Carbon Steel and Their Effects on Mechanical Properties" in Third International Conference on Metals & Hydrogen, Steely Hydrogen 2018 (2018), https://hdl.handle.net/21.15107/rcub_machinery_5515 .