Microstructure and properties of electrically assisted stationary shoulder friction stir welded Ti6Al4V

被引：14
作者：
Bai, Yafeng [1 ]
Jiang, Xiaoqing [1 ]
Chen, Shujun [1 ]
Jiang, Wang [1 ]
Han, Yang [1 ]
Yuan, Tao [1 ]
Wang, Xuping [2 ]
机构：
[1] Beijing Univ Technol, Fac Mat & Mfg, Inst Intelligent Forming Equipment & Syst, Beijing, Peoples R China
[2] Capital Aerosp Machinery Co Ltd, Beijing, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2021年 / 26卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Electrically assisted stationary shoulder friction stir welding; microstructure; texture; macrozones; hardness; tensile strength; MECHANICAL-PROPERTIES; TI-6AL-4V ALLOY; TEXTURE EVOLUTION; JOINTS; AL;
D O I：
10.1080/13621718.2021.1923441
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of modifying microstructure and texture by electric current on mechanical properties of electrically assisted stationary shoulder friction stir welded Ti6Al4V alloy were investigated. The width of the 'bowl-shaped' stir zone gradually increased with the increasing current value and texture of the joints changed abruptly with an increasing current from 0 to 300 A. The macrozones consisting of similar orientated grains in the heat-affected zone have the highest deformation degree and the lowest hardness, while macrozones were not seen in the stir zone of both the friction-stir welded joints and the electrically assisted joints. Why the tensile strength and elongation reached the highest at a current of 300 A was explained in terms of microstructure and texture.
引用
收藏
页码：377 / 388
页数：12
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