Measuring residual stresses in linear friction welded joints composed by dissimilar titanium

被引：14
作者：
Xie, P. [1 ,2 ]
Zhao, H. [1 ,2 ]
Liu, Y. [3 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Beijing 100084, Peoples R China
[3] Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2016年 / 21卷 / 05期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金; 北京市自然科学基金;
关键词：
Linear friction welding; Residual stress; Contour method; X-ray diffraction method; Titanium alloy dissimilar; ALLOY; MICROSTRUCTURE; TI-6AL-4V; CONTOUR; COMPONENTS; CUT;
D O I：
10.1080/13621718.2015.1115158
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Ti-5Al-2Sn-2Zr-4Mo-4Cr (Ti17) titanium alloy is the main material used in manufacturing blades and disks of aero engines, and it is always jointed with different microstructures for the design constraints. In this work, the residual stresses of linear friction welding of beta Ti17 and alpha + beta Ti17 are measured by contour method and the X-ray diffraction method. The welding-induced tensions were found to be greater on the beta side than that on the alpha + beta side, and had an obvious reduction in the weld centre. After the post weld heat treatment (PWHT) of 630 degrees C for 3 h, all tensions on the beta side relax to a very limited value while some new PWHT-induced compressions are found on the alpha + beta side.
引用
收藏
页码：351 / 357
页数：7
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