FATIGUE CHARACTERISTICS OF PULSED MIG-WELDED AL-ZN-MG ALLOY

被引：28

作者：

GHOSH, PK

GUPTA, SR

GUPTA, PC

RATHI, R

机构：

[1] Welding Research Laboratory, Department of Mechanical and Industrial Engineering, University of Roorkee, Roorkee

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 22期

关键词：

D O I：

10.1007/BF01113899

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pulse-current MIG welding of Al-Zn-Mg alloy was carried out using an extruded section of base material and Al-Mg (5183) filler wire. During welding the pulse parameters-such as the mean current and pulse frequency were varied and their effect on the geometry and porosity content of weld deposit as well as the fatigue life of the weldment was studied. The pulse parameters were found to affect significantly the geometry and porosity content of weld deposit and consequently the fatigue life of the weldment. For a comparative study, weldments were also prepared by using conventional continuous current MIG-welding process, where welding currents equivalent to the mean currents of pulsed process were used. The fatigue life of the weldment was correlated with the geometry and porosity content of weld deposit.

引用

页码：6161 / 6170

页数：10