Identification and evolution of interfacial structure of SiO2 glass ceramic/Ti-6AI-4V alloy joint bonded with AgCu/Ni interlayer  

作　　者：刘多 王美荣 唐冬雁 马蔷 冯吉才 

机构地区：[1]Shandong Provincial Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai, 264209. [2]Department of Chemistry, Harbin Institute of Technology, Harbin, 150001.

出　　处：《China Welding》2014年第3期37-41,共5页中国焊接（英文版）

基　　金：This work was supported by National Key Science and Technology Special Projects （2014ZX04001131）, Natural Scientific Research Innovation Foundation in Harbin Institute of Technology （HIT. NSRIF. 201119） and China Postdoctoral Science Foundation （2013M541367）.

摘　　要：AgCu/Ni composite interlayer was utilized to join SiO2 glass ceramic （74. 52% SiO2-23. 40% Al2 03 -2. 08 % K2 O, wt. % ） and Ti-6Al-4V alloy by eutectic reaction. Interface structures of the joints were identified by means of TEM analysis. This joining method contains three characteristic processes, which are the melting of AgCu eutectic alloy, eutectic reaction between interlayer and Ti-6Al-4V base material and active reaction of element Ti to SiO2 glass ceramic. It is different from traditional active brazing because active element Ti totally dissolves from Ti-6Al-4 V and reacts with SiO2 glass ceramic. SiO2 glass ceramic can be joined suecessfuUy to Ti-6Al-4 V alloy by this novel bonding method and the joint exhibits high shear strength, up to 110 MPa.AgCu/Ni composite interlayer was utilized to join SiO2 glass ceramic （74. 52% SiO2-23. 40% Al2 03 -2. 08 % K2 O, wt. % ） and Ti-6Al-4V alloy by eutectic reaction. Interface structures of the joints were identified by means of TEM analysis. This joining method contains three characteristic processes, which are the melting of AgCu eutectic alloy, eutectic reaction between interlayer and Ti-6Al-4V base material and active reaction of element Ti to SiO2 glass ceramic. It is different from traditional active brazing because active element Ti totally dissolves from Ti-6Al-4 V and reacts with SiO2 glass ceramic. SiO2 glass ceramic can be joined suecessfuUy to Ti-6Al-4 V alloy by this novel bonding method and the joint exhibits high shear strength, up to 110 MPa.

关 键 词：CERAMIC Ti-6Al-4V alloy reaction joining microstructure interface 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TQ171.733[金属学及工艺—金属材料]