Microstructure and joint performance during resistance projection welding of sensor support

被引：2

作者：

Bi, Yuanbo ^{[1
,2
]}

Dong, Jianwei ^{[1
,2
]}

Yang, Yue ^{[1
,2
]}

Luo, Zhen ^{[1
,2
]}

Su, Jie ^{[1
,2
]}

Zhang, Yixuan ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[2] Tianjin Univ, Tianjin Key Lab Adv Joining Technol, Tianjin 300350, Peoples R China

来源：

MATERIALS LETTERS | 2023年 / 335卷

基金：

中国国家自然科学基金;

关键词：

Protruding structure; Welding; Microstructures; Mechanical properties; Compression -shear force;

D O I：

10.1016/j.matlet.2022.133797

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A pyramid-shaped protruding structure was adopted to realize the connection of sensor support and mounting plate, which increased the local current density and realized the rapid melting of the metal in the bonding zone. The new welding method had high precision and realized one-time muti-spot welding. The microstructure and mechanical properties of the welded joints were studied. The hardness distribution of the joint increased from the base metal to the nugget due to the formation of martensite after welding. The average compression-shear force of the joint first increased and then decreased with the increase of current. The joint fractured along the bonding line, the fracture mode of the joint was quasi-cleavage fracture.

引用

页数：4

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