Microstructure and mechanical performances of ultrasonic spot welded Al/Cu joints with Al 2219 alloy particle interlayer
Microstructure and mechanical performances of ultrasonic spot welded Al/Cu joints with Al 2219 alloy particle interlayer
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DOI：
10.1016/j.matdes.2015.12.132
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发表时间：
2016-02-15
影响因子：
8.4
通讯作者：
Ye, Fuxing
中科院分区：
文献类型：
--
作者：
Ni, Zenglei;Zhao, Hongjian;Ye, Fuxing
采用超声波点焊技术，在6001 ~ 1500 J的焊接能量范围内，对添加Al 2219合金颗粒中间层的铜和铝进行了焊接，研究了接头的显微组织、硬度和搭接剪切拉伸强度。结果表明，随着焊接能量的增加，搭接剪切抗拉强度有增加的趋势，铝合金的硬度降低。当焊接能量为1500 J时，接头的抗拉强度最大，达到83 MPa，断裂部位在金属铜上。在Cu/层间界面上没有产生IMC。同时，Al 2219合金颗粒间层对合金的力学性能有显著影响. (C)2015爱思唯尔有限公司版权所有。
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.