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

作     者：Jun Zhang Cheng-Wu Zheng Dian-Zhong Li 

作者机构：School of Chemistry and Materials Science University of Science and Technology of China Shenyang National Laboratory for Materials ScienceInstitute of Metal Research Chinese Academy of Sciences 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2018年第31卷第2期

页      面：208-215页

核心收录：

学科分类：0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程] 

基　　金：financially supported by the National Science Foundation of China (Grant No. 51371169) and (Grant No. 51401214) 

主　　题：Phase-field Static recrystallization Microstructure evolution Hot deformation Mesoscopic modeling 

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.