Erosion wear of HCCI alloys
Апстракт
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 parti...cle 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.
Извор:
Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions, 2024Издавач:
- 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)
Колекције
Институција/група
Mašinski fakultetTY - 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 .