Effect of welding cycle on the fatigue behaviour of resistance spot welded dual phase steels

被引：0
|
作者：
Rossillon F. [1 ,2 ]
Galtier A.
Robert J.L. [2 ]
Duchet M. [1 ]
Lens A. [1 ]
Oikawa H. [3 ]
机构：
[1] LaMI, IUT de Montluçon
来源：
Welding in the World | 2008年 / 52卷 / 11-12期
关键词：
Fatigue strength; Fatigue tests; Fusion zone; Mechanical properties; Mechanical tests; Nugget; Process conditions; Reference lists; Spot welds; Weld zone;
D O I：
10.1007/BF03266680
中图分类号：
学科分类号：
摘要：
The effect of the welding cycle on the fatigue strength of spot welded lap shear specimens is studied through the use of accurate investigation tools. The combination of three techniques: potential drop method to track the crack evolution, fracture surface observation and metallographic examinations, enables to analyze efficiently the fatigue behaviour. The fatigue strength remains constant over the welding range and a mechanism explanation is provided. An outstanding fatigue strength improvement, corresponding to a 40% increase on initiation stage, is obtained by changing welding patterns and weld time. This study is performed on a DP600 homogenous assembly.
引用
收藏
页码：30 / 41
页数：11
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