微机控制钎焊Cu/Al焊接接头的组织与性能

谢剑; 胡俊; 蒋浩丰

doi:10.15980/j.tzzz.2015.10.008

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微机控制钎焊Cu/Al焊接接头的组织与性能
Microstructure and Properties of Cu/Al Brazing Welding Based on Microcomputer Control
2015年35卷第10期页码：1033-1036
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.10.008

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[1]谢剑,胡俊,蒋浩丰.微机控制钎焊Cu/Al焊接接头的组织与性能[J].特种铸造及有色合金,2015,35(10):1033-1036.

Xie Jian, Hu Jun, Jiang Haofeng. Microstructure and Properties of Cu/Al Brazing Welding Based on Microcomputer Control[J]. Special Casting & Nonferrous Alloys, 2015,35(10):1033-1036.
[1]谢剑,胡俊,蒋浩丰.微机控制钎焊Cu/Al焊接接头的组织与性能[J].特种铸造及有色合金,2015,35(10):1033-1036. DOI： 10.15980/j.tzzz.2015.10.008.

Xie Jian, Hu Jun, Jiang Haofeng. Microstructure and Properties of Cu/Al Brazing Welding Based on Microcomputer Control[J]. Special Casting & Nonferrous Alloys, 2015,35(10):1033-1036. DOI： 10.15980/j.tzzz.2015.10.008.

摘要

采用微机控制固定间隙超声波辅助汽车零部件焊接中Cu/Al异质金属的钎焊工艺

在钎焊温度为380、420和460℃时制备Cu/Zn-3Al/Al钎焊接头

观察了不同温度超声钎焊时接头的显微组织与力学性能变化。结果表明

当钎焊温度为380℃时

钎缝层由Zn-Al共晶、α-Al树枝状晶和CuZn5相组成;当钎焊温度为420和460℃时

发现钎缝层由α-Al树枝晶、CuZn5相和Al4.2Cu3.2Zn0.7相组成;在钎焊温度为420℃时

金属间化合物层厚度为1.9μm

扩散层厚度为1.3μm

整个界面层厚度为3种钎焊温度下的最低值

此时钎焊接头的抗拉强度最大。

Abstract

By brazing technology of Cu/Al heterogeneous metal with fixed gap ultrasonic assisted based on microcomputer control

the change of microstructure and mechanical properties of the Cu/Zn-3Al/Al joint prepare were observed with the ultrasonic soldering temperature at 380℃

420℃and 460℃.The results show that at 380 ℃

brazing layer is composed of Zn-Al eutectic

α-Al dendrites and CuZn5 phases while the brazing temperature is 420 ℃ and 460 ℃

brazing layer is composed ofα-Al dendrites

CuZn5 phase and Al4.2Cu3.2Zn0.7phase.In addition

at 420 ℃

intermetallic compound layer thickness reaches 1.9μm with diffusion layer thickness of 1.3μm

where the interface layer thickness is the minimum value for the three brazing temperature

and the tensile strength of the joint reaches maximum value.