Microstructural Characterization of Friction Welded TiAl-Ti6Al4V Hybrid Joints
This paper describes microstructure and microtexture development in dissimilar friction welded -TAB-Ti64 joints. The effect of friction welding parameters on microstructure and local properties are examined and discussed. It was found that the intermetallic -TiAl based alloy Ti-47Al-3.5(Mn+Cr+Nb)-0.8(B+Si) (denoted as -TAB) is more sensitive to the applied friction welding parameters used in this study. Furthermore, the bonding between these two alloys was controlled by a diffusion process during a very short process duration. Grain refinement as well microstructure transformation led to local improvement of the friction-welded joints.
H. Klein and R.A. Schwarzer
V. Ventzke et al., "Microstructural Characterization of Friction Welded TiAl-Ti6Al4V Hybrid Joints ", Solid State Phenomena, Vol. 160, pp. 319-326, 2010