Author(s): ZHI Ying~), LIU Xianghua~), YU Hailiang~), WANG Zhenfan~) 1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819 2) School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
Pages: 1396-1402
Year: 2011 Issue:  11
Journal: Acta Metallurgica Sinica
Keyword:  元胞自动机;  微合金钢;  动态再结晶;
Abstract: 建立了预测微合金钢热变形奥氏体动态再结晶组织与性能演变的元胞自动机模型.采用基于位错密度的动态再结晶理论,主要考虑动态再结晶的形核、晶粒长大,实现对动态再结晶过程晶粒形态、体积分数及晶粒尺寸的定量化表征及其演变过程的可视化描述,获得了位错密度及流变应力等参数.模拟得到的动态再结晶组织形貌及基于位错密度变化计算出的流变应力与实验结果吻合较好.