Microstructure and enhanced atomic diffusion of friction stir welding aluminium/steel joints

被引：16
|
作者：
Wei, Yanni [1 ]
Xiong, Jiangtao [2 ]
Li, Jinglong [2 ]
Zhang, Fusheng [2 ]
Liang, Shuhua [1 ]
机构：
[1] Xian Univ Technol, Dept Mat Sci & Engn, Xian 710048, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2017年 / 33卷 / 10期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Enhanced atomic diffusion; interfacial morphology; friction stir welding; microstructure; amorphous; ALUMINUM-ALLOY; LAP JOINT; MECHANICAL-PROPERTIES; FSW JOINTS; STEEL; PARAMETERS; TOOL; DEFORMATION; TEMPERATURE; 6061-T6;
D O I：
10.1080/02670836.2016.1274464
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lap joints of friction stir welding between aluminium and stainless steel sheets were conducted using a welding tool with a cutting pin. The atomic diffusion of Fe-Al system during the severe plastic deformation was investigated. The interfacial microstructure and metallurgical reaction was analysed. The metallurgical reaction layers were identified as a compounds containing a phase of Al3Fe, partial solid solution of Fe and Al, and amorphous with a thickness of 0.9-3.3 mu m which depending on the process parameters. The interdiffusion coefficient between Al and Fe atoms is about 4 orders of magnitude compared with that under thermal equilibrium state. The nanocrystalline and partial amorphous were formed near the interface which may caused by the enhanced atomic diffusion.
引用
收藏
页码：1208 / 1214
页数：7
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