Estimation of the failure time for low-carbon CrMoV steels in creep condition using modified kinetic theory based on microstructural parameters
Апстракт
The decreases of creep resistance can be in most cases, attributed to microstructural degradation in CrMoV steels, such as perlite degradation, carbides precipitation, etc. It is a usual practice to employ a statistical approach to define relationship between some parameters that characterize microstructural degradation and changes in creep resistance of the material. However, statistical analysis of the physically significant parameters that characterize microstructural degradation is usually not straightforward because of the lack and/or unreliability of experimental creep data for most of the materials. In this paper we propose a new approach that is based on determination of the materials strength using modified kinetic theory (based on Zurkov relation). The elementary destruction act is entirely defined in this model from physical point of view, as a result of thermal fluctuations of the atoms. This approach based on the microstructural parameters and modified kinetic theory of st...rength is used to estimate time to failure of the CrMoV steels in high-temperature creep conditions.
Кључне речи:
Remaining life assessment / Low alloy low carbon CrMoV steel / Kinetic theory of strengthИзвор:
Proceedings - ECCC Creep Conference: Creep and Fracture in High Temperature Components - Design and, 2005, 2005, 235-243Издавач:
- DEStech Publications Inc.
Scopus: 2-s2.0-33749332405
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Bakić, Gordana AU - Zeravčić-Šijački, Vera AU - Radović, M. PY - 2005 UR - https://machinery.mas.bg.ac.rs/handle/123456789/551 AB - The decreases of creep resistance can be in most cases, attributed to microstructural degradation in CrMoV steels, such as perlite degradation, carbides precipitation, etc. It is a usual practice to employ a statistical approach to define relationship between some parameters that characterize microstructural degradation and changes in creep resistance of the material. However, statistical analysis of the physically significant parameters that characterize microstructural degradation is usually not straightforward because of the lack and/or unreliability of experimental creep data for most of the materials. In this paper we propose a new approach that is based on determination of the materials strength using modified kinetic theory (based on Zurkov relation). The elementary destruction act is entirely defined in this model from physical point of view, as a result of thermal fluctuations of the atoms. This approach based on the microstructural parameters and modified kinetic theory of strength is used to estimate time to failure of the CrMoV steels in high-temperature creep conditions. PB - DEStech Publications Inc. C3 - Proceedings - ECCC Creep Conference: Creep and Fracture in High Temperature Components - Design and T1 - Estimation of the failure time for low-carbon CrMoV steels in creep condition using modified kinetic theory based on microstructural parameters EP - 243 SP - 235 VL - 2005 UR - https://hdl.handle.net/21.15107/rcub_machinery_551 ER -
@conference{ author = "Bakić, Gordana and Zeravčić-Šijački, Vera and Radović, M.", year = "2005", abstract = "The decreases of creep resistance can be in most cases, attributed to microstructural degradation in CrMoV steels, such as perlite degradation, carbides precipitation, etc. It is a usual practice to employ a statistical approach to define relationship between some parameters that characterize microstructural degradation and changes in creep resistance of the material. However, statistical analysis of the physically significant parameters that characterize microstructural degradation is usually not straightforward because of the lack and/or unreliability of experimental creep data for most of the materials. In this paper we propose a new approach that is based on determination of the materials strength using modified kinetic theory (based on Zurkov relation). The elementary destruction act is entirely defined in this model from physical point of view, as a result of thermal fluctuations of the atoms. This approach based on the microstructural parameters and modified kinetic theory of strength is used to estimate time to failure of the CrMoV steels in high-temperature creep conditions.", publisher = "DEStech Publications Inc.", journal = "Proceedings - ECCC Creep Conference: Creep and Fracture in High Temperature Components - Design and", title = "Estimation of the failure time for low-carbon CrMoV steels in creep condition using modified kinetic theory based on microstructural parameters", pages = "243-235", volume = "2005", url = "https://hdl.handle.net/21.15107/rcub_machinery_551" }
Bakić, G., Zeravčić-Šijački, V.,& Radović, M.. (2005). Estimation of the failure time for low-carbon CrMoV steels in creep condition using modified kinetic theory based on microstructural parameters. in Proceedings - ECCC Creep Conference: Creep and Fracture in High Temperature Components - Design and DEStech Publications Inc.., 2005, 235-243. https://hdl.handle.net/21.15107/rcub_machinery_551
Bakić G, Zeravčić-Šijački V, Radović M. Estimation of the failure time for low-carbon CrMoV steels in creep condition using modified kinetic theory based on microstructural parameters. in Proceedings - ECCC Creep Conference: Creep and Fracture in High Temperature Components - Design and. 2005;2005:235-243. https://hdl.handle.net/21.15107/rcub_machinery_551 .
Bakić, Gordana, Zeravčić-Šijački, Vera, Radović, M., "Estimation of the failure time for low-carbon CrMoV steels in creep condition using modified kinetic theory based on microstructural parameters" in Proceedings - ECCC Creep Conference: Creep and Fracture in High Temperature Components - Design and, 2005 (2005):235-243, https://hdl.handle.net/21.15107/rcub_machinery_551 .