%0 Journal Article
%T Dynamic recrystallization phenomenon in hot-working process by multi-phase-field model<br>热加工过程中动态再结晶现象的多相场研究
%A Xu Shu-Jie
%A Shi Chun-Sheng
%A Zhao Nai-Qin
%A Liu En-Zuo
%A <br>徐树杰
%A 师春生
%A 赵乃勤
%A 刘恩佐
%J 物理学报
%D 2012
%I 
%X Evolution of the dynamic recrystallization microstructure in the hot working process of metal is difficult to observe in real time experimentally. Based on Ginzburg-Landau kinetic equation, a physical metallurgy model with coupling multi-phase field method and the dislocation density calculation is used to simulate dynamic recrystallization in the thermal processing. The dynamic recrystallization processes at the different temperatures and different strain rates are investigated. The reason for the stress-strain curve changing from single peak state to the multi-peak state is explained. In addition, we systematically simulate the process of multi-stage deformation and the effect of static recovery on dynamic recrystallization, and analyze the influence of thermal processing parameters on the kinetics of dynamic recrystallization. The simulation results show that the grain size increases during suspension of deformation, and higher deformation temperature and lower deformation strain rate can accelerate the process of dynamic recrystallization.
%K dynamic recrystallization
%K stress-strain
%K static recovery
%K multi-phase-field model<br>动态再结晶
%K 应力-应变
%K 静态回复
%K 多相场模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=78F360FC29C479119D420ED6BCD48691&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=708DD6B15D2464E8&sid=8FB77BAC7580591B&eid=8FB77BAC7580591B&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=38