J. Mater. Sci. Technol. ›› 2016, Vol. 32 ›› Issue (11): 1111-1116.DOI: 10.1016/j.jmst.2016.01.016

• Orginal Article • Previous Articles     Next Articles

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

Li Zhuoran(),Feng Guangjie,Wang Shiyu,Feng Shicheng   

  1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
  • Received:2015-07-01 Accepted:2015-08-12 Online:2016-11-20 Published:2017-02-16

Abstract:

The aim of this study was to develop a high-efficiency joining method of Cf/Al composites and TiAl 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.

Key words: Cf/Al composites, TiAl, Self-propagating high-temperature synthesis, Joining, Microstructure