Friction Stir Spot Butt Welding of Dissimilar S45C Steel and 6061-T6 Aluminum Alloy

被引：17

作者：

Gao, Kun ^{[1
]}

Zhang, Shengwei ^{[1
]}

Mondal, Mounarik ^{[1
]}

Basak, Soumyabrata ^{[1
]}

Hong, Sung-Tae ^{[1
]}

Shim, Heechan ^{[2
]}

机构：

[1] Univ Ulsan, Sch Mech Engn, Ulsan 44610, South Korea

[2] ILJIN Global Co R&D Ctr, Mat R&D Ctr, Seoul 06157, South Korea

来源：

METALS | 2021年 / 11卷 / 08期

关键词：

friction stir spot butt welding; aluminum alloy; steel; dissimilar joint; intermetallic compounds; MECHANICAL-PROPERTIES; STAINLESS-STEEL; MILD-STEEL; JOINT; MICROSTRUCTURE;

D O I：

10.3390/met11081252

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Friction stir spot welding (FSSW) of dissimilar S45C steel and 6061-T6 aluminum alloy in a butt configuration is experimentally investigated. Butt spot welding is performed using a convex scrolled shoulder tool at different tool rotational speeds. FSSW butt joints are successfully fabricated by offsetting the tool to the steel side. The microstructures of the joints fabricated at three different tool rotational speeds are characterized using scanning electron microscopy and energy dispersive spectrometry. Microstructural analysis shows the presence of intermetallic compounds (IMCs) along the steel/aluminum interface. The thickness of the IMC layer and the tensile strength of the joint increase with increasing the tool rotational speed. The results of tensile tests and microstructural analysis show that the joint performance is closely related to the IMCs at the joint interface.

引用

页数：13

共 36 条

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