Wang, M.-H., Wang, W.-H., Yang, H., Zhou, J.
42062424100;54409838300;55576731200;56510510800;
Dynamic recrystallization prediction during double cup extrusion by cellular automata coupled with finite analysis method
(2013) Journal of Harbin Institute of Technology (New Series), 20 (4), pp. 99-108.
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归属机构: School of Material Science and Engineering, Chongqing University, Chongqing 400044, China
摘要: In order to investigate the microstructure evolution during a hot extrusion process, a cellular automata (CA) coupled with finite element method (FEM) was developed to numerically simulate the dynamic recrystallization (DRX). Firstly, the cellular automata model was modified by introducing thermomechanical parameters under the isothermal hot compression conditions. Then, the modified CA was verified by the experimental average grain size which was obtained by the hot compression of cylindrical specimens. After that, the modified CA was used to predict the microstructure evolution during a double cup extrusion by combining with the finite element method. The results showed that the strain rate and the temperature are sensitive to the average grain size while the strain can affect the DRX fraction greatly. In addition, the CA model can predict the final microstructure successfully and is able to simulate the DRX phenomenon for a wide range of deformation conditions. It also revealed that the results obtained by CA model are consistent with the ones acquired by finite element analysis.
作者关键字: Cellular automata;  Computer simulation;  Dynamic recrystallization;  Microstructure
索引关键字: Cellular automata modeling; Cylindrical specimens; Deformation conditions; Dynamic recrystallization (DRX); Final microstructures; Hot extrusion process; Micro-structure evolutions; Thermo-mechanical parameters, Automata theory; Cellular automata; Computer simulation; Crystal microstructure; Dynamic recrystallization; Finite element method; Forecasting; Grain size and shape; Microstructure; Strain rate, Extrusion
通讯地址: Wang, W.-H.; School of Material Science and Engineering, Chongqing University, Chongqing 400044, China; 电子邮件: wwh8804@163.com
ISSN: 10059113
CODEN: JHITE
原始文献语言: English
来源出版物名称缩写: J. Harbin Inst. Technol.
文献类型: Article
来源出版物: Scopus