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Title:Simulation on rolling process of 6061 aluminum alloy thick plate based on visco-plastic self-consistent model
Authors: Jiang Xiaojuan1  Hu Mengjun1  Sun Tao2  Xiao Xinrui2  Peng Jie2  Dong Mengyao1  Zhan Zhengyang1 
Unit: 1.School of Mechanical Engineering and Automation  Chongqing Industry Polytechnic College   2.School of Materials Science and Engineering  Chongqing University 
KeyWords: 6061 aluminum alloy  hot rolling  visco-plastic self-consistent model  anisotropic  reduction rates 
ClassificationCode:TG335
year,vol(issue):pagenumber:2023,48(8):125-135
Abstract:

 For the 6061 aluminum alloy plate with the thickness of 60 mm, the change laws of temperature, strain and stress fields of the plate during the rolling deformation process at different reduction rates were studied by Deform simulation analysis technology, and the influences on the core, 1/4 position and the surface of the plate were emphatically analyzed. Then, the texture evolution laws of different positions of the plate were studied by visco-plastic self-consistent(VPSC) finite element method, which provided a new method for the study of deformation behavior and anisotropy in the aluminum alloy rolling process. The results show that during the multi-pass rolling process, the maximum temperature difference between the core and surface area is not prominently affected by the reduction rate of the rolled part, and the maximum temperature difference is 10 ℃. The accumulative strains at the surface and 1/4 position are always greater than that at the core, the contact between rolled parts and roller causes a large stress on the surface, and it shows obvious uneven stress distribution in the local areas of rolled parts. Three typical textures on β orientation line,that are Copper texture {112}<11-1>, Brass texture {011}<21-1> and S texture {123}<63-4> are formed at the surface, 1/4 position and core of rolled part.  With the continuous increasing of rolling reduction rate, the volume fraction of texture increases and the texture strength also increases. Among them, the volume fraction and the strength of S texture show an obvious increasing trend, which further indicates that the strength of S texture is more sensitive to the strain change process than the other two textures.

Funds:
重庆市教育委员会科学技术研究计划青年项目资助项目(KJQN202203209,KJQN202203216);重庆市自然科学基金面上项目 (cstc2021jcyj-msxmX1112)
AuthorIntro:
作者简介:蒋小娟(1987-),女,博士,讲师,E-mail:jiangxj@cqipc.edu.cn
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