Effects of SiC ceramic particles on microstructures and mechanical properties of gas tungsten arc welded AZ31 magnesium alloy with Cr2O3 flux coating

被引：6
|
作者：
Shen, J. [1 ]
Liu, K. [1 ]
Zhai, D. J. [1 ]
Wang, D. [1 ]
Xu, N. [1 ]
Jiang, C. J. [2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Dong Feng Turbine Co Ltd, Fabricat Workshop, Deyang 618000, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2013年 / 18卷 / 01期
关键词：
AZ31 magnesium alloy; Tungsten inert gas welding; Cr2O3 flux coating; SiC ceramic particles; Microstructure; Mechanical property; MATRIX COMPOSITES;
D O I：
10.1179/1362171812Y.0000000063
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of SiC ceramic particles on the macromorphologies, microstructures and mechanical properties of tungsten inert gas welded AZ31 magnesium alloy joints with Cr2O3 flux coating were investigated. The results showed that an increase in the amount of SiC ceramic particles contained in the Cr2O3 flux coating led to the gradual decrease in weld penetrations. The weld penetrations of all welded seams with flux coatings were obviously higher than those without flux coating. Grain refinement was obtained in the welded seams when SiC ceramic particles were added in the Cr2O3 flux coating. With an increase in the amount of SiC ceramic particles, the ultimate tensile strength value of the welded joints increased at first and then decreased. Moreover, the microhardness of the fusion zone increased gradually with an increase in the addition of SiC ceramic particles in the Cr2O3 flux coating.
引用
收藏
页码：11 / 18
页数：8
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