High-efficiency Joining of C_f/Al Composites and TiAl Alloys under the Heat Effect of Laser-ignited Self-propagating High-temperature Synthesis  

作　　者：Zhuoran Li Guangjie Feng Shiyu Wang Shicheng Feng 

机构地区：[1]State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology

出　　处：《Journal of Materials Science & Technology》2016年第11期1111-1116,共6页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51075101)

摘　　要：The aim of this study was to develop a high-efficiency joining method of Cf/Al composites and TiA l alloys under the heat effect of laser-ignited self-propagating high-temperature synthesis（SHS）. The SHS reaction of Ni–Al–Zr interlayer was induced by laser beam and acted as local high-temperature heat source during the joining. Sound joint was obtained and verified the feasibility of this joining method. Effect of filler metals on the joint microstructure and shear strength was evaluated. When the joining pressure was 2 MPa with additive filler metals, joint shear strength reached the maximum of 41.01 MPa.The aim of this study was to develop a high-efficiency joining method of Cf/Al composites and TiA l alloys under the heat effect of laser-ignited self-propagating high-temperature synthesis（SHS）. The SHS reaction of Ni–Al–Zr interlayer was induced by laser beam and acted as local high-temperature heat source during the joining. Sound joint was obtained and verified the feasibility of this joining method. Effect of filler metals on the joint microstructure and shear strength was evaluated. When the joining pressure was 2 MPa with additive filler metals, joint shear strength reached the maximum of 41.01 MPa.

关 键 词：C_f/Al composites TIAL Self-propagating high-temperature SYNTHESIS Joining MICROSTRUCTURE 

分 类 号：TB333[一般工业技术—材料科学与工程] TG146.23[金属学及工艺—金属材料]