Effect of forging force on fatigue behavior of spot welded joints of aluminum alloy 5182

被引：13
作者：
Chang, B. H. [1 ]
Du, D.
Sui, B.
Zhou, Y.
Wang, Z.
Heidarzadeh, F.
机构：
[1] Tsing Hua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
[2] Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada
[3] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 1A4, Canada
来源：
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME | 2007年 / 129卷 / 01期
关键词：
resistance spot welding; aluminum alloys; residual stress; fatigue behavior; forging force;
D O I：
10.1115/1.2383071
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using experimental and finite element analysis methods, the effects of electrode forging force are investigated on fatigue behavior and residual stress of spot welded joints of aluminum alloy 5182. Results show that applying forging force significantly reduces the residual stresses in the heat affected zone and the fatigue cracks no longer initiate from there; instead, all cracks begin from the nugget edge. In addition, the mitigation of rest. dual stress by forging force decreases the driving force for crack propagation and leads to longer fatigue life. It can be concluded that applying forging force appropriately has a positive effect on the fatigue strength of resistance spot welded joints.
引用
收藏
页码：95 / 100
页数：6
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