Tungsten Inert Gas Welding-Brazing of AZ31B Magnesium Alloy to TC4 Titanium Alloy

被引：48
|
作者：
Xu, Chuan [1 ]
Sheng, Guangmin [1 ]
Wang, Hui [1 ]
Feng, Ke [1 ]
Yuan, Xinjian [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2016年 / 32卷 / 02期
基金：
中国国家自然科学基金;
关键词：
TIG welding-brazing; Magnesium alloy; Titanium alloy; Microstructure; Mechanical property; MECHANICAL-PROPERTIES; MG ALLOY; TENSILE PROPERTIES; LAP JOINTS; LASER; MICROSTRUCTURE; STEEL; TI-6AL-4V; ALUMINUM; MG-AZ31;
D O I：
10.1016/j.jmst.2015.12.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tungsten inert gas (TIG) welding-brazing technology using Mg-based filler was developed to join AZ31B Mg alloy to TC4 Ti alloy in a lap configuration. The results indicate that robust joints can be obtained with welding current in the range of 60-70 A. The joint interface was found to be likely composed of Mg-Ti diffusion reaction layer accompanied with Mg17Al12 precipitate phase, indicating that metallurgical joining was achieved. The optimized joint with average tensile-shear strength of 190 N/mm(2) was obtained and fracture occurred at the Ti/fusion zone interfacial layer during tensile test. Moreover, the fracture surface was characterized by equiaxed dimple patterns accompanied with a few lamellar tearing. Finally, finite element modeling (FEM) numerical simulation was developed to analyze the distribution characteristics of the temperature field of joints. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.
引用
收藏
页码：167 / 171
页数：5
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