A Multi-phase Field Model for Static Recrystallization of Hot Deformed Austenite in a C–Mn Steel |
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摘 要: | A multi-phase-field model has been developed to simulate the microstructure evolution and kinetics of the austenite static recrystallization(SRX) in a C–Mn steel. In this model, the bulk free energy that coupling the deformation stored energy with a special interpolation function is incorporated. Both the deformed grain topology and the deformation stored energy have been included in order to investigate the influence of pre-deformation on the subsequent austenite SRX at different hot deformation levels. Diverse scenarios of microstructure evolution show different deformation-dependent recrystallized grain sizes. The transformation kinetics is then discussed by analyzing the overall SRX fraction and the average interface velocity on the recrystallization front.
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收稿时间: | 2017-05-24 |
A Multi-phase Field Model for Static Recrystallization of Hot Deformed Austenite in a C-Mn Steel |
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Authors: | Jun Zhang Cheng-Wu Zheng Dian-Zhong Li |
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Affiliation: | 1.School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiChina2.Shenyang National Laboratory for Materials Science, Institute of Metal ResearchChinese Academy of SciencesShenyangChina |
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Abstract: | A multi-phase-field model has been developed to simulate the microstructure evolution and kinetics of the austenite static recrystallization (SRX) in a C-Mn steel. In this model, the bulk free energy that coupling the deformation stored energy with a special interpolation function is incorporated. Both the deformed grain topology and the deformation stored energy have been included in order to investigate the influence of pre-deformation on the subsequent austenite SRX at different hot deformation levels. Diverse scenarios of microstructure evolution show different deformation-dependent recrystallized grain sizes. The transformation kinetics is then discussed by analyzing the overall SRX fraction and the average interface velocity on the recrystallization front. |
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Keywords: | Phase-field Static recrystallization Microstructure evolution Hot deformation Mesoscopic modeling |
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