ANALYSIS AND COMPARISON OF ALUMINUM ALLOY WELDED JOINTS BETWEEN METAL INERT GAS WELDING AND TUNGSTEN INERT GAS WELDING

被引:6
|
作者
Zhao, Lei [1 ]
Guan, Yingchun [1 ,2 ,3 ]
Wang, Qiang [1 ]
Cong, Baoqiang [1 ]
Qi, Bojin [1 ]
机构
[1] Beihang Univ, Beijing 100191, Peoples R China
[2] Nanyang Technol Univ, Singapore 639798, Singapore
[3] Singapore Inst Mfg Technol, Singapore 638075, Singapore
基金
中国国家自然科学基金;
关键词
Surface analysis; microstructure; MIG; TIG; aluminum alloy; SURFACE; CORROSION; COATINGS; FATIGUE;
D O I
10.1142/S0218625X15500791
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Surface contamination usually occurs during welding processing and it affects the welds quality largely. However, the formation of such contaminants has seldom been studied. Effort was made to study the contaminants caused by metal inert gas (MIG) welding and tungsten inert gas (TIG) welding processes of aluminum alloy, respectively. SEM, FTIR and XPS analysis was carried out to investigate the microstructure as well as surface chemistry. These contaminants were found to be mainly consisting of Al2O3, MgO, carbide and chromium complexes. The difference of contaminants between MIG and TIG welds was further examined. In addition, method to minimize these contaminants was proposed.
引用
收藏
页数:7
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