Influence of Parent Metal Microstructure and Post-Weld Heat Treatment on Microstructure and Mechanical Properties of Linear Friction Welded Ti-6Al-4V Joint

被引：27

作者：

Li, Wenya ^{[1
,2
]}

Wu, Hui ^{[1
]}

Ma, Tiejun ^{[1
]}

Yang, Changlin ^{[1
]}

Chen, Zhongwei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Shaanxi Key Lab Frict Welding Technol, Xian 710072, Shaanxi, Peoples R China

[2] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Shaanxi, Peoples R China

来源：

ADVANCED ENGINEERING MATERIALS | 2012年 / 14卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Tensile strength;

D O I：

10.1002/adem.201100203

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Linear friction welding (LFW) of Ti-6Al-4V (Ti-64) titanium alloy with a different microstructure from the previous study was conducted. The joint microstructure, tensile strength and fracture characteristics were studied. Results show that the microstructure of parent metal has a strong influence on the microstructure and properties of LFW Ti-64 joints. Under the specific conditions in this study, unexpected spheric a grains were formed near the bondline, which leads to the steep drop of the joint tensile strength. Although the tensile strength could be improved through post-weld heat treatment, the failure of specimens still took place across the bondline with the cleavage fracture due to the formation of basket-weave structure at the weld center zone and the remaining of spheric a grains.

引用

页码：312 / 318

页数：7

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