锌合金火焰钎焊用钎料研究  

Development of filler metals for flame brazing of zinc alloy

作　　者：黄俊兰[1] 龙伟民[1] 董显[1] 吕登峰[1] 

机构地区：[1]郑州机械研究所新型钎焊材料与技术国家重点实验室,郑州450001

出　　处：《焊接》2017年第8期47-50,共4页Welding & Joining

基　　金：热能储存材料承载体的高温钎焊研究(2015DFA50470)

摘　　要：以4种钎料对ZAT10锌合金进行了火焰钎焊。通过研究4种钎料的熔化温度、浸润性能、钎焊接头力学性能和钎缝气孔率,从中选取综合性能较优的SnZn-1钎料;采用扫描电镜(SEM)、X射线能谱仪(EDS)进一步研究了该钎焊接头的组织和成分。研究结果表明,SnZn-1钎焊接头的抗拉强度高达62 MPa、气孔率约为10%,钎缝界面区组织大部分是均匀的等轴晶组织,且发生了钎料和母材的相互溶解和扩散,从而获得优质的钎焊接头。Four filler metals were applied to braze zinc alloy by flame brazing.Based on the results of melting temperature,wettability,the mechanical properties and the porosity of brazed seam,the ideal filler metal Sn Zn-1 for Zinc alloy was successfully obtained.The microstructure and compounds of the brazed joint were further studied by SEM and EDS.The results show that the tensile strength of Sn Zn-1 brazed joint reaches up to 62 MPa,and the porosity rate is about 10%.The most of interface microstructure are uniform equiaxed structure,and the mutual diffusion and dissolution of elements occur between the base metal and the filler metal,which forms the better brazed joint.

关 键 词：锌合金 火焰钎焊 抗拉强度 气孔率 

分 类 号：TG454[金属学及工艺—焊接]