刘晓芳,张冠星,钟素娟,常云峰

• 1:郑州机械研究所有限公司新型钎焊材料与技术国家重点实验室

摘要(Abstract)：

采用扫描电镜(SEM)、能谱仪(EDS)和万能力学试验机等研究了500℃退火不同时间对AgCuZnNiMn/Cu/AgCuZnNiMn多层复合钎料界面元素扩散行为与钎焊力学性能的影响。结果表明：复合钎料界面扩散层主要为银基固溶体、铜基固溶体；随退火时间的增加，物相发生明显粗化，界面两侧元素不断发生互扩散，当退火时间为24 h时，界面扩散层厚度达20μm。同时，随退火时间的增加，钎焊接头界面处的应力缓释Cu层逐渐减少直至消失，接头强度从224 MPa下降到165 MPa,接头断裂机制从以韧窝为主的韧性断裂向韧-脆混合性断裂转变。表明退火时间对多层复合钎料中间层宽度设定有重要影响，而中间层的相对宽度也影响钎料的使用性能。

关键词(KeyWords)： AgCuZnNiMn/Cu/AgCuZnNiMn钎料;退火时间;扩散行为

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1904197)

作者(Author): 刘晓芳,张冠星,钟素娟,常云峰

DOI: 10.13289/j.issn.1009-6264.2022-0584

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