Microstructure and texture investigation on electrically assisted friction stir welded titanium alloy

被引：7

作者：

Jiang, Xiaoqing ^{[1
]}

Han, Yang ^{[2
]}

Chen, Shujun ^{[1
]}

Bai, Yafeng ^{[1
]}

Yuan, Tao ^{[1
]}

Wang, Xuping ^{[2
]}

机构：

[1] Beijing Univ Technol, Minist Educ, Engn Res Ctr Adv Mfg Technol Automot Struct Parts, Beijing 100124, Peoples R China

[2] Capital Aerosp Machinery Co Ltd, Beijing, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Electrically assisted friction stir welding; texture; macrozones; hardness; MECHANICAL-PROPERTIES; TI-6AL-4V; JOINT;

D O I：

10.1080/02670836.2020.1808295

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure, texture and mechanical properties of electrically assisted friction stir welding (EFSW) of Ti6Al4 V alloy were investigated. The base material (BM) and the heat-affected zone (HAZ) have a coarse equiaxed structure, and the fine equiaxed structure was observed in the stir zone (SZ). The boundary between the SZ and the HAZ changed abruptly from the FSW joint to the EFSW joint to make it smooth. The BM and the HAZ have a strong prismatic texture {10 (1) over bar0} and the texture of the SZ is randomly distributed. Hardness of the joints was explained by grain size, loss rate of elemental Al and dislocation density, as well as the advantages of the EFSW process in terms of improving mechanical properties as influenced by microstructure and texture.

引用

页码：1628 / 1638

页数：11

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