Transactions of Materials and Heat Treatment

Title：Analysis on warping deformation for Ti/Al laminated composite plate in transverse co-extrusion

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ClassificationCode：TG379

year,vol(issue):pagenumber：2021,46(3):56-63

Abstract：

For the warping deformation problem of Ti/Al laminated composite plate in transverse co-extrusion process, the plastic deformation analysis and the process parameters optimization were numerically analyzed by software Deform-3D, and the warping angle of deformable aluminum material and the standard deviation of interface welding stress were proposed as the evaluation strategy of warping deformation. The simulation results show that the warping angle has the positive and negative correlation evolvement rules with extrusion speed and temperature respectively, that is, the “high temperature and low speed” co-extrusion preparation process helps to reduce the warping deformation behavior of Ti/Al laminated composite plate. At the same time, the smaller the warping angle is, the smaller the standard deviation of interface welding stress is for Ti/Al laminated composite plate in welding zone. Furthermore, the physical experiment of transverse co-extrusion of Ti/Al laminated composite plate was conducted by a relatively optimized set of process parameters (the extrusion temperature is 480 ℃, the extrusion speed is 1 mm·s-1), and the results show that the experimental warping degree is in a good agreement with the numerical simulation results to verify the validity of the numerical simulation results.

Funds：

国家自然科学基金资助项目（51705080）；福建省自然科学基金面上项目（2018J01764）

孙凯（1993-），男，硕士研究生 E-mail：N180220058@fzu.edu.cn 通讯作者：薛新（1983-），男，博士，副教授 E-mail: xin@fzu.edu.cn

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