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

被引：17

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

页码：1208 / 1214

页数：7

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