Transactions of Materials and Heat Treatment

Title：Numerical simulation of hot tandem rolling process for magnesium alloy

Authors： Zhi Chenchen Zhang Xiuzhi Xue Kang

Unit： Taiyuan University of Science and Technology

KeyWords： magnesium alloy AZ31 hot tandem rolling edge crack thermo-mechanical coupled analysis

ClassificationCode：TG146.22

year,vol(issue):pagenumber：2016,41(2):144-147

Abstract：

For the problem of edge crack in hot tandem rolling of magnesium alloy, the process of three passes tandem rolling for magnesium alloy AZ31 sheet was simulated by ANSYS with the thermo-mechanical coupled analysis at temperature 350 ℃ and rolling speed 0.5 m·s-1. Furthermore, the temperature and stress in different parts of the magnesium plate were analyzed by LS-DYNA in the rolling process, and the simulation result was verified by the experiment. The research results show that in the hot tandem rolling, the temperature drop of magnesium plate is greater on the first pass, and they are varied on different parts. Moreover, the stress of center layer edge is greater than that of the middle surface layer in the rolling process. Due to change of non-uniform temperature and the edge stress concentration, the edge crack of magnesium alloy plate occurs easily in the hot tandem rolling.

Funds：

国家自然科学基金资助项目(51105264)；太原科技大学研究生科技创新项目（20145005）

支晨琛（1989-），女，硕士研究生张秀芝（1973-），女，博士，副教授

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