Experimental investigation on ultrasonic vibration enhanced FSW of Al-Mg dissimilar materials

被引：8
|
作者：
Lü X. [1 ]
Yang C. [1 ]
Wu C. [1 ]
机构：
[1] Institute of Material Joining, Shandong University, Jinan
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2016年 / 52卷 / 24期
关键词：
Al-Mg dissimilar materials; Friction stir welding; Ultrasonic vibration;
D O I：
10.3901/JME.2016.24.058
中图分类号：
学科分类号：
摘要：
Joining of aluminum-magnesium dissimilar alloys can broaden the application of lightweight structures, so it is of great scientific value and economic benefits. The comparison tests between conventional friction stir welding (FSW) and ultrasonic vibration enhanced friction stir welding (UVeFSW) are conducted, and the experimental results are analyzed. It shows that the exerted ultrasound can broaden the process-parameter window, improve the surface smooth of the weld, reduce the occurrence tendency of defects, optimize the Al/Mg interface structure, homogenize and refine grains, and improve the mechanical properties of the joints. The load tests demonstrate that the exerted ultrasound can lower the load required for welding so that it's benefit for reducing the equipment volume. The measured temperature illustrates that the ultrasound produces some preheating effect on the weldment. © 2016 Journal of Mechanical Engineering.
引用
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页码：58 / 64
页数：6
相关论文
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