组织不均匀性对铜基钎料特性及钎焊性能的影响  

Effects of inhomogeneity of microstructure on character and brazing performance of copper based brazing filler metal

作　　者：倪雪辉 刘畅 张行 杨芝明 NI Xuehui;LIU Chang;ZHANG Hang;YANG Zhiming(Gree Electric Appliances,Inc.of Zhuhai,Zhuhai 519070)

机构地区：[1]珠海格力电器股份有限公司,广东珠海519070

出　　处：《家电科技》2020年第6期89-93,共5页Journal of Appliance Science & Technology

摘　　要：通过对几种BCu93P铜基钎料进行润湿性试验和焊接质量测试,研究了钎料中Cu相不均匀性对钎料特性及钎焊性能的影响。结果表明:BCu93P钎料主要由亮白色Cu相和暗黑色Cu3P相组成,其中Cu相呈颗粒状或团聚状分布。Cu相呈颗粒状分布钎料的铺展性和填缝性要优于Cu相呈团聚状分布钎料。BCu93P钎料与母材实现良好的冶金结合,钎缝区主要由α-Cu基体、α-Cu和Cu3P混合组织组成,Cu相呈颗粒状分布钎料所焊钎缝中α-Cu与Cu3P的混合组织比Cu相呈团聚状分布钎料所焊钎缝中更均匀,且前者α-Cu相的尺寸小于后者。α-Cu相作为焊缝中较"软"的相,其团聚分布、尺寸粗大不利于钎缝强度的改善。The wettability test and welding quality test were used to study the effects of inhomogeneity of Cu phase on character and brazing performance of different BCu93 P copper based brazing filler metal.The results show that BCu93 P brazing filler metal is composed with white Cu phase and dark Cu3P phase.The Cu phase is distributed in graininess or unity.The spreadability and clearance fillabitity of brazing filler metal with granular Cu phase are better than that with united Cu phase.BCu93 P has good metallurgical combination with the base metal.The weld zone is composed withα-Cu and mix microstructure ofα-Cu and Cu3P.The homogeneity of mix microstructure of weld zone brazed by filler metal with granular Cu phase is better than that with united Cu phase,and the size ofα-Cu phase of the former is less than the latter.α-Cu phase is the‘softer’phase in the weld zone,the united distribution and large size of which go against the improvement of strength of weld zone.

关 键 词：铜基钎料 组织不均匀性 润湿性 钎焊性能 

分 类 号：TG4[金属学及工艺—焊接]