Dissimilar Al/Mg alloys friction stir lap welding with Zn foil assisted by ultrasonic

被引：1

作者：

Shude Ji ^{[1
]}

Shiyu Niu ^{[1
]}

Jianguang Liu ^{[2
]}

机构：

[1] School of Aerospace Engineering,Shenyang Aerospace University

[2] Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials,Beijing Aeronautical Science & Technology Research Institute of COMAC

来源：

JournalofMaterialsScience&Technology | 2019年 / 35卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Dissimilar Al/Mg alloys; Friction stir lap welding; Zn foil; Ultrasonic power; Microstructures; Tensile shear load;

D O I：

暂无

中图分类号：

TG453.9 [];

学科分类号：

摘要：

The Zn-added ultrasonic assisted friction stir lap welding(UaFSLW) was carried out to improve the quality of dissimilar Al/Mg alloys joint. The effects of ultrasonic power on the joint quality were also investigated.The results indicated that the larger effective lap width and mixing region between Mg and Al(Mg/Al MR) were attained by Zn foil addition and external ultrasonic assistance. Compared with the conventional joint, the finer and better-distributed Mg-Zn IMCs placing the continuous Al-Mg IMCs were formed in the Mg/Al MR of the Zn-added UaFSLW joint. The Zn foil addition and external ultrasonic assistance significantly improved the tensile shear load of the joint, and the load was increased with the increase of the ultrasonic power. The maximum tensile shear load of 7.95 kN was attained, which was 52.6% larger than that of the conventional joint.

引用

页码：1712 / 1718

页数：7

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