Microstructure and tensile properties of 304L austenitic stainless joints produced by friction stir welding and tungsten inert-gas welding

被引：0
|
作者：
Xu J. [1 ]
Xu C. [1 ,2 ]
Fan B. [1 ,2 ]
Wang S. [1 ,2 ]
机构：
[1] Nuclear Power Institute of China, Chengdu
[2] Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2016年 / 37卷 / 01期
关键词：
304L austenitic stainless steel; Friction Stir Welding (FSW); Microstructure; Tensile properties; Tungsten Inert-gas Welding (TIG);
D O I：
10.13832/j.jnpe.2015.06.0057
中图分类号：
学科分类号：
摘要：
3 mm thick 304L austenitic stainless steel plates were welded by Friction Stir Welding (FSW) and Tungsten Inert-Gas Welding(TIG) respectively, then the microstructure and tensile properties of the welding joints of the two different types of welding were compared and analyzed. The results of the comparison and the analysis show that the FSW welding joint microstructures is composed of four regions, welded nugget zone, thermal-mechanically affected zone (TMAZ), heat affected zone (HAZ), and shoulder affected zone(SAZ). And the microstructure in the nugget is uniform fine-scale equiaxed recrystallisation grain, and the materials in TMAZ underwent plastic deformation, but the materials in HAZ just underwent heat effect. The TIG nugget includes cellular dendrite austenitic, lath ferrite or vermicular ferrite. The tensile properties of FSW joints is the same as those of the TIG joints, and both of the tensile properties of the two types of welding joints are slightly higher than those of the base materials of the welding joints. © 2016, Yuan Zi Neng Chuban She. All right reserved.
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页码：57 / 61
页数：4
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