Refill Friction Stir Spot Welding of Dissimilar 6061/7075 Aluminum Alloy

High Temperature Materials and Processes

Liu Zhenlei¹  Yang Kang¹  Yan Dejun² 

[1] Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang110136, China;Guangdong Key Laboratory of Enterprise Advanced Welding Technology for Ships, CSSC Huangpu Wenchong Shipbuilding Company Limited, Guangzhou510715, China;

关键词: refill friction stir spot welding;    sheet configuration;    microstructure;    lap shear failure load;   

DOI  :  10.1515/htmp-2017-0139

来源: DOAJ

【 摘 要 】

Refill friction stir spot welding (RFSSW) was used to join 6061-T6 and 7075-T6 aluminum alloys in this work. Different sheet configurations and welding parameters were used to optimize joint strength. The effect of sleeve plunge depth on the microstructure and mechanical properties of the joints were investigated. The results showed that no defects were obtained when 6061-T6 aluminum alloy was placed as the upper sheet. The lap shear failure load of the joint using 6061-T6 aluminum alloy as the upper sheet was higher than that using 7075-T6 as the upper sheet. The maximum failure load of 12,892 N was attained when using the sleeve plunge depth of 3.6 mm. The joint failed at the upward flowing 7075 near the hook.

【 授权许可】

Unknown