Effect of joint configuration on resistance spot weldability of galvanised DP780 steel sheets

被引：7
|
作者：
Wei, S. T. [1 ]
Liu, R. D. [1 ]
Lv, D. [1 ]
Lin, L. [1 ]
Lu, X. F. [1 ]
Ding, S. W. [1 ]
机构：
[1] Angang Steel Co Ltd, Automobile & Home Appliance Steel Inst, Ctr Technol, 63 Wuyi Rd, Anshan 114009, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2016年 / 21卷 / 03期
关键词：
Resistance spot welding; Multilayer spot weld; Joint configuration; Macrostructure; Splash; Mechanical properties; Nugget diameter; HIGH-STRENGTH STEELS; LOW-CARBON STEEL; MECHANICAL-PROPERTIES; WELDED-JOINTS; FAILURE MODE; PERFORMANCE; GROWTH; SIZE;
D O I：
10.1179/1362171815Y.0000000081
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 780 MPa galvanised dual phase (DP) steel was two-, three- and four-layer resistance spot welded under different welding parameters and joint configurations. The splash situation, nugget sizes and tensile shear properties of the spot welds were evaluated systematically. The results showed that the splash occurring current increased in the order of two-, three- and four-layer spot welds owing to the increasing metal volume for melting. The joint configuration had a great influence on the tensile shear properties of the spot welds. The three- and four-layer spot welds with proper joint configurations had better weld quality than the two- layer spot weld. Therefore, well designed multilayer spot welds could be used to replace the commonly used two- layer spot welds in actual production.
引用
收藏
页码：178 / 185
页数：8
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