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

被引：17
|
作者：
Liu, Zhenlei [1 ]
Yang, Kang [1 ]
Yan, Dejun [2 ]
机构：
[1] Shenyang Aerosp Univ, Fac Aerosp Engn, Shenyang 110136, Liaoning, Peoples R China
[2] CSSC Huangpu Wenchong Shipbldg Co Ltd, Guangdong Key Lab Enterprise Adv Welding Technol, Guangzhou 510715, Guangdong, Peoples R China
来源：
HIGH TEMPERATURE MATERIALS AND PROCESSES | 2019年 / 38卷 / 2019期
基金：
中国博士后科学基金;
关键词：
refill friction stir spot welding; sheet configuration; microstructure; lap shear failure load; MECHANICAL-PROPERTIES; MICROSTRUCTURE; AL; JOINTS; PARAMETERS; AA6181-T4; AA5754; DEFECT;
D O I：
10.1515/htmp-2017-0139
中图分类号：
T [工业技术];
学科分类号：
08 ;
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.
引用
收藏
页码：69 / 75
页数：7
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