稀土元素Y与Cu复合添加对Al-Mg-Si系钎料性能的影响  

Effect of Rare Earth Element Y and Cu Composite Additions on Properties of Al-Mg-Si Based Brazing Alloy Series Brazing Filler Metal

作　　者：余静喜 伍玉娇[1,2] 龙琼 凌敏 周登凤 Yu Jingxi;Wu Yujiao;Long Qiong;Ling Min;Zhou Dengfeng(School of Materials and Metallurgical Engineering,Guizhou University,Guiyang Guizhou 550025,China;Department of Materials&Metallurgy Engineering,2011 Special Functional Materials Collaborative Innovation Center of Guizhou Province,Guizhou Institute of Technology,Guiyang Guizhou 550003,China)

机构地区：[1]贵州大学材料与冶金工程学院,贵州贵阳550025 [2]贵州理工学院材料与冶金工程学院2011贵州省特种功能材料协同创新中心,贵州贵阳550003

出　　处：《上海金属》2018年第5期40-45,共6页Shanghai Metals

基　　金：贵州省教育厅创新群体项目(黔教合KY字[2016]043);国家自然科学基金(No.51664009);贵州省科技计划项目(黔科合基础[2016]1067)

摘　　要：采用Al-Mg-Si系钎料,通过添加不同量的Cu元素和稀土元素Y,研究了钎料的DSC曲线、显微组织、铺展性能,以及钎焊接头的组织性能。结果表明,Cu元素显著影响钎料的液相温度线,而Y却影响不大。钎料添加Y后,组织得到细化和均匀化,强度提高。Y可以显著增大钎料的铺展面积,提高焊接接头的力学性能,细化焊缝组织,减少钎焊缺陷。Al-Mg-Si series brazing filler metal was used,and its DSC curve,microstructure,spreading property as well as microstructure and properties of the brazed joint were analyzed by adding different amounts of Cu and rare earth element Y.The results showed that the Cu element had great influence on the liquid temperature line of solder,but Y had little influence.After the addition of Y element,the microstructure of brazing filler metal was refined and homogenized,and the strength was improved.Y could significantly increase the spreading area of solder joint,greatly improve the mechanical properties of welded joints,and refine the weld microstructure and reduce the brazing defects.

关 键 词：稀土 铝合金钎料 铺展性能 钎焊缺陷 

分 类 号：TG425[金属学及工艺—焊接]