采用带有镍辅助垫片的电阻元件焊接法焊接的铝/铜接头的微观结构与性能

Microstructure and properties of joint of Al/Cu welded by resistance element welding with an auxiliary gasket of Ni.

作者信息

Cui Dongsheng, Wang Jing, Qiu Ranfeng, Shi Hongxin, Yan Lipeng

机构信息

School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471039, China.

Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Nonferrous Metal New Materials and Advanced Processing Technology, Luoyang, 471039, China.

出版信息

Sci Rep. 2025 Jan 4;15(1):822. doi: 10.1038/s41598-025-85124-w.

DOI:10.1038/s41598-025-85124-w

PMID:39755738

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11700207/

Abstract

A rivet of aluminum and auxiliary gasket of nickel were adopted to weld A1060 aluminum plate and T2 copper plate using resistance element welding. The interfacial microstructure was analyzed and the tensile shear load of the joint was tested. A layer of AlCu and the eutectic structure of AlCu and (Al) were formed in the interfacial zone of Al/Cu. The grains in AlCu layer exhibit random crystal orientations. With the increase of welding current and the extension of welding time, the tensile shear load of the Al/Cu joint increased first and then decreased. When the welding current was 30 kA, the welding time was 400 ms, the tensile shear load of the joint reached the maximum, approximately 2.55 kN. The results reveal that the application of nickel auxiliary gasket in the resistance element welding of Al/Cu can promote the joining between the rivet shank and the upper plate and increase the tensile shear load of the joint.

摘要

采用铝铆钉和镍辅助垫片，利用电阻点焊工艺对A1060铝板和T2铜板进行焊接。分析了界面微观结构，并测试了接头的拉伸剪切载荷。在Al/Cu界面区形成了一层AlCu以及AlCu与(Al)的共晶组织。AlCu层中的晶粒呈现随机晶体取向。随着焊接电流的增加和焊接时间的延长，Al/Cu接头的拉伸剪切载荷先增大后减小。当焊接电流为30 kA、焊接时间为400 ms时，接头的拉伸剪切载荷达到最大值，约为2.55 kN。结果表明，镍辅助垫片在Al/Cu电阻点焊中的应用可促进铆钉杆与上板之间的结合，并提高接头的拉伸剪切载荷。