Transactions of Materials and Heat Treatment

Title：Mechanical properties for TA1/5A06 homogeneous self-piercing riveted joints

Authors： Guo Zixin1 2 Zhao Lun1 3 Guo Yuanyuan2 Qi Xiaozhi3 Liu Jiyuan1 Huo Xiaole1 Lin Sen1 Md Shafiqul Islam4

Unit： 1.Institute of Intelligent Manufacturing Technology Shenzhen Polytechnic 2.Faculty of Materials and Metallurgy University of Science and Technology Liaoning 3.Institute of Advanced Integration Technolgy Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences 4.Department of Mechanical Engineering Blekinge Institute of Technology

KeyWords： self-piercing riveting titanium alloy aluminium alloy static load strength cushioning and shock absorption performance microstructure

ClassificationCode：TH131.1

year,vol(issue):pagenumber：2022,47(12):135-141

Abstract：

In order to further study the application of self-piercing riveting technology in aerospace field, TA1 titanium alloy and 5A06 aluminum alloy aviation alloy sheet materials were selected as substrates, and the self-piercing riveting technology was used for connection. Then, the static performance and microstructure of joint were systematically studied by tensile test and SEM test. The results show that the forming symmetry of homogeneous joint is good, and the cavity is easy to appear when riveting the hard plate. The performance of substrate has a great influence on the static strength of joint. The failure displacement of 5A06-5A06 joint is the largest, and the pull-off of upper plate is due to the appearance of micro-cracks around the rivet. The static failure load of TA1-TA1 joint is the largest, and its cushioning and shock absorption performance is good. The rivet fracture mode of the joint is a mixed fracture of intergranular fracture and micro-cavity aggregation.

Funds：

国家自然科学基金资助项目(12104324);中国博士后科学基金(2021M703392);深职院博士后启动基金(6022310046K)

郭子鑫（1996-），男，硕士研究生 E-mail：zixin_guo@126.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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