Modeling of Developing Inhomogeneities in the Ferrite Microstructure and Resulting Mechanical Properties Induced by Deformation in the Two-Phase Region
The differences in microstructure development of hot deformed steels in the austenite and two-phase region have been effectively described using an integrated computer modeling process. In general, the complete model presented here takes into account kinetics of recrystallization, precipitation, phase transformation, recrystallized austenite grain size, ferrite grain size, and the resulting mechanical properties. The transformation submodel of niobium-microalloyed steels is based on the nucleation and grain growth theory and additivity rule. The thermomechanical part of the modeling process was effectively carried out using the finite element method. Results were obtained in different temperatures, strain rates, and range of deformation. The thermomechanical treatments are different for two grades of niobium-steels to make possible analysis of the resulting structure and properties for different histories of deformation and chemical composition.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- US Department of Defense (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 757432
- Report Number(s):
- LA-UR-99-1398; TRN: AH200029%%41
- Resource Relation:
- Conference: 4th International Conference on Recrystallization and Related Phenomena, JIMIS-10, Tsukuba (JP), 07/13/1999--07/16/1999; Other Information: PBD: 13 Jul 1999
- Country of Publication:
- United States
- Language:
- English
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