Transactions of Materials and Heat Treatment

Title：Cold joining process and mechanical property study for Al-Ti dissimilar plates

Authors： Lei Le1 2 Zhao Lun1 Gao Shanfeng2 Huo Xiaole1 Lin Sen1 Guo Zixin1

Unit： 1.Institute of Intelligent Manufacturing Technology Shenzhen Polytechnic 2.School of Automation and Software Shanxi University

KeyWords： self-piercing riveting pulling riveting clinching aluminum alloy titanium alloy mechanical properties

ClassificationCode：TH131.1

year,vol(issue):pagenumber：2023,48(7):100-106

Abstract：

The 5A06 aluminum alloy and TA1 titanium alloy thin plate were used for self-piercing riveting, pulling riveting and clinching, and the tensile tests were conducted to analyze the differences in mechanical properties of joints. The results show that the overall mechanical properties of the self-piercing riveted joint are the best, followed by the pulling riveted joint, and the lapping sequence has no obvious effect on the self-piercing riveted joint. When the 5A06 aluminum alloy plate is used as the upper plate, the static mechanical properties of the pulling riveted joint are better, and when the TA1 titanium alloy plate is used as the upper plate, the static mechanical properties of the clinching joint are better. The failure mode of self-piercing riveted joint is mainly that the aluminum plate is broken and a large number of dimples appear at the fracture, and the failure mode of the pulling riveted joint is related to the overlapping sequence of thin plates. In addition, the failure mode of the aluminum-titanium lap joint is that the aluminum plate is broken, the failure mode of the titanium-aluminum lap joint is the pull-off of aluminum plate, and the failure mode of the clinching joint is relatively uniform, which is the failure of neck fracture.

Funds：

国家自然科学基金资助项目(12104324)；中国博士后科学基金面上项目(2021M703392)；深圳职业技术学院博士后启动基金(6022310046k)

作者简介：雷乐(1999-)，男，硕士研究生 E-mail：leile319777@163.com 通信作者：赵伦(1988-)，男，博士，副研究员 E-mail：zhaolun@szpt.edu.cn

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