A Multi-phase Field Model for Static Recrystallization of Hot Deformed Austenite in a C-Mn Steel

• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2018,（2）
• 页码范围: 208-215
• 页数: 8页
• 语种: 英文

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.