Effect of shoulder shape on axial force of friction stir welding of 6061 aluminum alloy

被引：0
|
作者：
Niu W. [1 ]
Xie J. [1 ,2 ]
Huang Y. [1 ]
Zhang H. [3 ]
Chen Y. [1 ]
机构：
[1] Jiangxi Key Laboratory of Forming and Joining Technology for Aviation Aerospace Components, Nanchang Hangkong University, Nanchang
[2] Harbin Institute of Technology, Harbin
[3] Passenger Car Fujian Branch of SAIC Motor Corporation Limited, Ningde
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2021年 / 42卷 / 07期
关键词：
6061-T6 aluminum alloy; Axial force; Friction stir welding; Shoulder shape;
D O I：
10.12073/j.hjxb.20201210001
中图分类号：
学科分类号：
摘要：
For the application of robotic FSW, the influence of shoulder shape on axial force during welding was researched. FSW of 6061-T6 aluminum alloy was successfully performed by tools with different shoulder shape of flat and concave. The axial force during welding was measured, recorded, and analyzed. The distribution and variation of axial force were analyzed comprehensively with the aid of an established stress model about the shoulder. The results were shown that weld morphology of the flat shoulder was better than that of the concave shoulder. The average axial force curve fluctuated zigzag in the stable welding stage, while the amplitude of zigzag with the flat shoulder was smaller than the concave shoulder. The lowest axial force was measured in rotating speed of 1 500 r/min and the welding speed of 95 mm/min, when the flat shoulder was used, the lowest axial force was 3 828 N, and the concave shoulder was 4 018.5 N. It was attributed of the lower heat input produced welding with concave shoulder and greater resistance to plastic flow of material. In addition, according to the force analysis, when the concave shoulder was used for welding, a certain axial force was added by the movement in the forward direction, which resulted in a larger axial force. © 2021, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：66 / 73
页数：7
相关论文
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