稀土元素Er对Bi5Sb8Sn钎料力学性能的影响  

Effect of the rare earth element Er on mechanical properties of Bi5Sb8Sn brazing filler metal

作　　者：刘中英 郭斌峰 

机构地区：[1]郑州工业应用技术学院机电工程学院,河南郑州451150

出　　处：《焊接技术》2015年第2期51-54,6,共4页Welding Technology

基　　金：国家自然基金资助项目(51175151)

摘　　要：通过向Bi5Sb8Sn钎料合金中添加适量的稀土元素铒(Er),研究了不同含量的稀土Er对Bi5Sb8Sn无铅钎料合金力学性能的影响。结果表明,微量稀土Er的添加能显著细化该钎料组织,改善合金的组织分布情况,提高钎料的力学性能;稀土w(Er)0.5%时,Bi5Sb8SnRE合金抗拉强度和钎焊接头的抗剪强度较基体钎料Bi5Sb8Sn分别提高了41.8%和83.0%.;但当稀土w(Er)>0.5%时,则组织粗化,钎料力学性能下降。The rare-earth(RE) Er was added into Bi5Sb8 Sn brazing alloy.The effect of Er on the mechanical properties of Bi5Sb8 Sn lead-free brazing alloy system was investigated.The results showed that the adding of Er could make miscrostructure homogeneous,the distribution situation improved.Then the mechanical properties of brazing alloy were improved.Comparing with Bi5Sb8 Sn matrix,the tensile strength and shear strength were increased by41.8%and 83.0%respectively when Er was addd up to 0.5%.However,the microstructure coarsened and the mechanical properties were decreased when the addition of Er was more than 0.5%.

关 键 词：Bi5Sb8SnRE 稀土Er 力学性能 

分 类 号：TG425[金属学及工艺—焊接]