张冬冬,刘树英,陈泽,孙艳艳,毛永换

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

研究了Bi及稀土添加对Zn-10Al-5Cu(mass%)基体合金的润湿性能、显微组织、力学性能的影响。结果表明:钎料合金铺展面积随Bi添加量的增加而增大;铜铝接头抗剪强度随Bi添加量的增加而先增加后降低,得到的Zn-10Al-5Cu-2Bi(mass%)是性能较为优良的钎料。在Zn-10Al-5Cu-2Bi(mass%)钎料中添加稀土La、Nd,钎料的润湿性得到改善,当稀土元素添加量为0.15%时,钎料的润湿性能最佳。随着稀土元素的添加,钎料中大块的黑色共析组织逐渐变小,基体组织得到细化;当稀土元素含量为0.1%时,基体组织最为均匀、细密,晶粒也达到最大程度的细化,铜铝钎焊接头的抗剪强度达到最大。因此稀土La、Nd元素在Zn-10Al-5Cu-2Bi(mass%)中的最佳添加量为0.1%左右。

关键词(KeyWords)： 铜铝钎焊;润湿性;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 河南科技大学大学生训练(SRTP)项目(2017023)

作者(Author): 张冬冬,刘树英,陈泽,孙艳艳,毛永换

DOI: 10.13289/j.issn.1009-6264.2017-0141

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