张声金,程东海,张夫庭,亓安泰,成家龙

• 1:南昌航空大学航空与工程制造学院

摘要(Abstract)：

针对Ni/Ni-Sn/Ni复合钎焊，提出采用界面金属间化合物(Intermetallic compound, IMC)层厚度及钎缝内部IMC含量(体积分数)分别表征钎焊过程中界面及钎缝内部组织演变进程，研究保温时间对Ni-Sn复合钎焊接头组织性能的影响。结果表明：接头内只生成一种金属间化合物Ni_3Sn_4,主要分布在母材界面和钎缝内所有Ni颗粒周围；界面IMC层厚度及钎缝内部Ni_3Sn_4含量均随着保温时间的增加不断增加，当保温240 min时，金属间化合物含量高达83.23%,形成了由Ni_3Sn_4化合物以及残余Ni颗粒组成的耐高温钎焊接头；接头剪切强度随保温时间的增加呈先上升后缓慢下降的趋势，断裂位置由钎缝内部向界面转移，当保温180 min时，接头的剪切强度达到最大值28.47 MPa,此时断裂位置刚好发生在界面IMC层处。

关键词(KeyWords)： Ni-Sn复合钎料;金属间化合物;剪切强度

Abstract:

Keywords:

基金项目(Foundation): 江西省自然科学基金(20212BAB204044)

作者(Author): 张声金,程东海,张夫庭,亓安泰,成家龙

DOI: 10.13289/j.issn.1009-6264.2023-0391

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