Microstructure and mechanical performances of ultrasonic spot welded Al/Cu joints with Al 2219 alloy particle interlayer

被引：47
作者：
Ni, Zenglei [1 ]
Zhao, Hongjian [1 ]
Mi, Pengbo [1 ]
Ye, Fuxing [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
来源：
MATERIALS & DESIGN | 2016年 / 92卷
基金：
中国国家自然科学基金;
关键词：
Aluminum; Copper; Al 2219 alloy particle; Ultrasonic spot welding; Hardness; Lap shear tensile strength; ALUMINUM; COPPER; ENERGY;
D O I：
10.1016/j.matdes.2015.12.132
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Copper and aluminum metals with Al 2219 alloy particle interlayer were jointed together utilizing ultrasonic spot welding (USW) at different welding energy ranging from 6001 to 1500 J. The microstructure, hardness and lap shear tensile strength of the joints were studied. The results show that, with increasing the welding energy, the lap shear tensile strength had an increasing trend and the hardness of aluminum metals decreased. The maximum tensile strength reached about 83 MPa at 1500 J welding energy, and the failure location was in the copper metal. There are no IMCs produced across the Cu/interlayer interface. Meanwhile, the Al 2219 alloy particle inter layer has a significant effect on the mechanical performance. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：779 / 786
页数：8
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