Zn-15Al-xLa中间层对镁/钢接触反应钎焊接头性能影响  

Effect of Zn-15Al-x La Interlayer on Mechanical Properties of Mg/Steel Joint

作　　者：贾梦超 赵丽敏[1] 邓杰 JIA Mengchao;ZHAO Limin;DENG Jie(School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学材料科学与工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2022年第1期73-76,共4页Journal of Dalian Jiaotong University

摘　　要：通过选用不同La含量的Zn-15Al-xLa(x=0,0.05,0.1,0.2wt%)中间层,进行镁/钢的接触反应钎焊,采用电子万能试验机、场发射扫描电子显微镜、X射线衍射仪,对接头的组织特征及力学性能进行分析.实验证明:适量La的加入能够细化接头的显微组织;随着La含量的增加,接头剪切强度先增大后减小,当La的含量为0.05%时,接头剪切强度最高;当La的含量继续增加至0.2%时,接头强度反而下降.The contact reactive brazing of Mg/Steel was carried out by selecting Zn-15 Al-xLa(x= 0, 0.05, 0.1 and 0.2 wt%) interlayer. The microstructure and mechanical properties of the joint were analyzed by using electronic universal testing machine, field emission scanning electron microscope and X-ray diffractometer. The results show that the addition of La can refine the microstructure of the joint. With the increase of La content, the shear strength of the joint is first increased and then decreased. When the content of La is 0.05 wt%, the shear strength of the joint is the highest. When the content of La is continued to increase to 0.2 wt%, the strength of the joint is decreased.

关 键 词：接触反应钎焊 中间层 稀土La 

分 类 号：TG454[金属学及工艺—焊接]