Transactions of Materials and Heat Treatment

Title：Numerical simulation of the rolling process for Mg/Al explosive welding composite plate with thermo-mechanical coupled model

Authors： Liu Wenzheng Wang Dongya Cao Xiaoqing Wang Lifei Wang Wenxian

Unit： Taiyuan University of Technology Shanxi Key

KeyWords： rolling explosion Mg/Al explosive welding composite plate thermo-mechanical coupled

ClassificationCode：TG335.185

year,vol(issue):pagenumber：2016,41(10):166-170

Abstract：

The magnesium/aluminum laminated composite plate is a new kind of laminated composite material, and it can be produced by explosion+rolling method so as to play the advantages of magnesium alloy and aluminum alloy performance fully. The hot rolling process of Mg/Al explosive welding composite plate under different hot rolling parameters was simulated by finite element analysis ABAQUS software, and the influences of rolling temperature and reduction ratio on the broadening of plate, equivalent strain and degree of warping were analyzed. Simulation results show that the broadening of composite plate decreases slightly with the increases of temperature, and increases with the increase of rolling reduction ratio. However, during rolling process the metal mainly flows along the rolling direction, and the maximum broadening rate of composite plate is 3.5%. From the head to the end of the composite plate, the equivalent stress of the joint first increases, then maintains the level and finally falls down, and the maximum equivalent strain at interface is increased from 0.164 to 0.523 with increasing rolling reduction. Thus, the temperature at interfacial metal is higher than both sides of composite plate in the process of rolling, at the end of rolling the temperature falls down from 350 ℃ to 237 ℃. The optimum rolling quality can be obtained when rolled at 350 ℃ with rolling reduction by 30%.

Funds：

国家自然科学基金资助项目（51375328）；山西省归国留学人员科研资助项目（2015-036）

作者简介：刘文拯（1990-），男，硕士研究生 E-mail：liuwenzheng163@163.com；通讯作者：曹晓卿（1966-），女，博士，教授 E-mail：cxqty@126.com

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