中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 13 Special 1 May 2003 |
Vacuum brazing of TiB2 cermet to TiAl-based alloys using Ag-Cu-Zn filler metal
（State Key Laboratory of Advanced Welding Production Technology,
Harbin Institute of Technology, Harbin 150001, China）
Abstract:Vacuum brazing of TiB2 cermet to TiAl-based alloy was carried out at 1223K for 5-30min using Ag-Cu-Zn filler metal. The microstructural analyses indicate that three reaction products, Ti(Cu, Al)2 , Ag-Cu eutectic and Ag based solid solution (Ag(s.s)), are present in the brazing seam. The experimental results show that the shear strength of the brazed TiB2/TiAl joints decreases as the brazing time increases at a definite brazing temperature, it is up to 168MPa when the joint is brazed at 1223K for 5min.
Key words: TiB2 cermet; TiAl; vacuum brazing; interface structure; strength
