肖雄,吴鸿燕,刘泽民,程东海,张夫庭,亓安泰,成家龙

• 1:南昌航空大学航空制造工程学院
• 2:九江职业技术学院船舶工程学院

摘要(Abstract)：

采用FeCrNiAlCu高熵合金粉末作为中间层，对2A16铝合金/T2紫铜进行电阻点焊，研究高熵合金粉末对接头显微组织和力学性能的影响。结果表明：高熵合金粉末与液态铝合金存在元素相互扩散现象，并且反应生成富Al的固溶体过渡层。铜侧界面存在两层相结构组织，分别为富Al的固溶体层以及由Al_2Cu化合物组成的金属间化合物层(Intermetallic compound, IMC),部分固溶体颗粒与母材形成机械咬合。在焊接电流大小为20～32 kA时，接头的拉伸强度随焊接电流的增加先增加后减小；电流大小为25 kA时，接头的拉伸强度最高，达到1.64 kN,较无中间层的接头提升了30%;接头的断裂发生在铜侧界面处。

关键词(KeyWords)： 固溶体;高熵合金;异种材料;电阻点焊

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 肖雄,吴鸿燕,刘泽民,程东海,张夫庭,亓安泰,成家龙

DOI: 10.13289/j.issn.1009-6264.2023-0394

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