Behaviors of interfacial elements during the brazing of SiO2 glass ceramic to Ti-6AI-4V with AgCu/Ni interlayer  

作　　者：刘多 周利 唐冬雁 陶戢 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》2015年第2期18-24,共7页中国焊接（英文版）

基　　金：This work was supported by National Natural Science Foundation of China （Grant No. 51505105） and Natural Science Foundation,of Shandong Province （ Grant No. ZR2014EEQ001 ）.

摘　　要：AgCu/Ni composite interlayer was used to join SiO2 glass ceramic to Ti-6AI-4V alloy successfully, obtaining the largest joint shear strength 110 MPa. Ag, Cu and Ni in the interlayer and Ti in the Ti-6AI-4V alloy affect the joint formation and interfacial products significantly. To understand the joint formation process better, behaviors of elements Ag, Cu, Ni and Ti during the brazing of SiO2 glass ceramic to Ti-6AI-4 V alloy were investigated in the present work. Active element Ti is the most important component in the joining, realizing the metallurgical bonding of SiO2 glass ceramic to braze alloy. Cu together with Ni reacts to Ti in the base material by Ti-Cu-Ni ternary eutectic reaction, which is beneficial for reducing the massive Ti- Cu and/or Ti-Ni brittle intermetallic compounds on the joint interface. Dispersion of Ag decreases the brittleness qf the whole joint effectively.AgCu/Ni composite interlayer was used to join SiO2 glass ceramic to Ti-6AI-4V alloy successfully, obtaining the largest joint shear strength 110 MPa. Ag, Cu and Ni in the interlayer and Ti in the Ti-6AI-4V alloy affect the joint formation and interfacial products significantly. To understand the joint formation process better, behaviors of elements Ag, Cu, Ni and Ti during the brazing of SiO2 glass ceramic to Ti-6AI-4 V alloy were investigated in the present work. Active element Ti is the most important component in the joining, realizing the metallurgical bonding of SiO2 glass ceramic to braze alloy. Cu together with Ni reacts to Ti in the base material by Ti-Cu-Ni ternary eutectic reaction, which is beneficial for reducing the massive Ti- Cu and/or Ti-Ni brittle intermetallic compounds on the joint interface. Dispersion of Ag decreases the brittleness qf the whole joint effectively.

关 键 词：CERAMIC titanium alloys BRAZING interface 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TP311.1[金属学及工艺—金属材料]