Microstructure evolution and mechanical properties of robotic friction stir welded joints of 2024-T4 ultra-thin aluminum alloy

被引：0
|
作者：
Wang C. [1 ]
Zhao Y. [1 ]
Deng J. [1 ,2 ]
Dong C. [1 ]
You J. [1 ,3 ]
机构：
[1] China-Ukraine Institute of Welding, Guangdong Academy of Science, Guangdong Provincial Key Laboratory of Advanced Welding Technology, Guangzhou
[2] Guangdong Key Laboratory of Robot Digital Intelligent Manufacturing Technology, Guangzhou
[3] Shenyang University of Technology, Shenyang
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2021年 / 42卷 / 10期
关键词：
Mechanical property; Microstructure; Robot friction stir welding; Ultra thin aluminum alloy;
D O I：
10.12073/j.hjxb.20201208002
中图分类号：
学科分类号：
摘要：
As the carrier of the robot friction stir welding system, the joints of the robot are connected in series mode, which will deform during the welding process. The release of deformation during the ultra-thin plate welding process will lead to defects such as weld leakage, which restricts the robot friction stir welding system Application in the welding process of ultra-thin plates. In this paper, the robot friction stir welding process of 0.5 mm-thick ultra-thin 2024-T4 aluminum alloy plate was studied. The research indicated that: Due to the insufficient rigidity of the robot body, it is necessary to increase the plunge depth or the spindle speed to realize the welding of the ultra-thin plate, When the spindle speed is 2500 r/min and the welding speed is between 600-1000 mm/min, the joint strength shows a rising trend, up to 408 MPa, reaching 90% of the base material. The joint hardness shows a double "W"-shaped distribution. The fracture form is ductile fracture. © 2021, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：49 / 54
页数：5
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