Abstract: Titanium TA2 plates were joined by transient liquid phase bonding at different bonding temperatures in argon atmosphere, using Cu-Ni-Sn-P amorphous foils as interlayer. Influence of bonding temperature on the microstructure, micro-hardness and shear strength of the joints were investigated by an optical microscope, a micro-hardness tester and a material tester. The results show that the isothermal solidification of the liquid interlayer did not complete at the bonding temperature lower than 840 ℃, and the remaining interlayer could be observed. Atomic diffusion speeded up and the remaining interlayer reduced gradually with the increase of bonding temperature; the microstructure of the joints were all solid solution at 870 ℃. The joints had the highest shear strength around 180 MPa when the bonding temperature was 850 ℃.