Variant selection in stationary shoulder friction stir welded Ti-6Al-4V alloy

被引：22
作者：
Jiang, Xiaoqing [1 ]
Wynne, Bradley P. [2 ]
Martin, Jonathan [3 ]
机构：
[1] Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Engn Res Ctr Adv Mfg Technol Automot Struct Parts, Minist Educ, Beijing 100124, Peoples R China
[2] Univ Sheffield, Dept Mat Sci & Engn, Sir Robert Hadfield Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England
[3] Welding Inst, Granta Pk, Cambridge CB21 6AL, England
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2018年 / 34卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Stationary shoulder friction stir welding; Texture; Variant selection; Hardness; ALPHA/BETA TITANIUM-ALLOY; BETA GRAIN-BOUNDARIES; PHASE-TRANSFORMATION; TENSILE PROPERTIES; TEXTURE; MICROSTRUCTURE; PRECIPITATION;
D O I：
10.1016/j.jmst.2017.11.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stationary shoulder friction stir welding of Ti-6Al-4V of 7 mm thickness was conducted with varying welding speeds and rotation speeds. Variant selection analysis was carried out based on the inherited a phase texture and the reconstructed beta phase texture. The weld surfaces became significantly smoother with increasing welding speed and decreasing rotation speed. Heat input decreased greatly with increased welding speed and it decreased slightly with decreased rotation speed. The orientation relationship between the prior beta grains was measured based on the reconstructed electron backscattered diffraction (EBSD) data. Weak Variant selection has occurred in all the welds because most of the prior beta grains did not share {110} poles. Strong links between crystal orientation of the prior beta grains and hardness have been found. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：198 / 208
页数：11
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