J Mater Sci Technol ›› 2006, Vol. 22 ›› Issue (06): 817-820.

• Research Articles • Previous Articles     Next Articles

Diffusion Bonding of Ti-6Al-4V to QAl 10-3-1.5 with Ni/Cu Interlayers

Wei GUO, Xihua ZHAO, Minxia SONG, Jicai FENG, Biao YANG   

  1. Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun 130025, China...
  • Received:2005-09-23 Revised:2006-03-07 Online:2006-11-28 Published:2009-10-10
  • Contact: Xihua ZHAO

Abstract: Ti-6Al-4V and QAl 10-3-1.5 diffusion bonding has been carried out with Ni/Cu interlayers. The diffusionbonded joints are evaluated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and microhardness test. Intermetallic compounds at the interface zone are detected by X-ray diffraction (XRD). Interfacial microstructure of TiNi+CuTi3+®-Ti forms at the Ni/Ti-6Al-4V transition zone and Cu (ss. Ni) solid solution forms between Ni/Cu interlayers. The thickness of reaction layer (TiNi) increases with bonding time by a parabolic law: y2=K0exp(-150000/RT)/t, and K0=2.9×10-7 m2/s is figured out from the experiment data.

Key words: Diffusion bonding, Microstructure, Interface, Ni/Cu interlayers