Identification of nucleation parameter for cellular automaton model of dynamic recrystallization

被引：1
|
作者：
金朝阳 [1 ,2 ]
刘娟 [1 ]
崔振山 [1 ]
韦东来 [1 ]
机构：
[1] National Die and Mold CAD Engineering Research Center,Shanghai Jiao Tong University
[2] School of Mechanical Engineering,Yang zhou University
来源：
Transactions of Nonferrous Metals Society of China | 2010年 / 20卷 / 03期
关键词：
dynamic recrystallization; cellular automaton method; response surface method; nucleation rate; parameter identification;
D O I：
暂无
中图分类号：
TG111 [金属物理学];
学科分类号：
0702 ; 070205 ;
摘要：
The accuracy of nucleation parameter is a critical factor in the simulation of microstructural evolution during dynamic recrystallization(DRX).Based on the flow stress curve under hot deformation conditions,a new approach is proposed to identify the nucleation parameter during DRX.In this approach,a cellular automaton(CA) model is applied to quantitatively simulate the microstructural evolution and flow stress during hot deformation;and adaptive response surface method(ARSM) is applied as optimization model to provide input parameters to CA model and evaluate the outputs of the latter.By taking an oxygen-free high-conductivity(OFHC) copper as an example,the good agreement between the simulation results and the experimental observations demonstrates the availability of the proposed method.
引用
收藏
页码：458 / 464
页数：7
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