MECHANICAL ALLOYING OF TITANIUM-BASE ALLOYS

Application of mechanical alloying to titanium-base alloys is a recent development. A wide range of terminal phases and those based on titanium aluminides (both Ti3Al and TiAl) have been examined and it has been shown that synthesis of metallic phases can be achieved by mechanical alloying. The phases so synthesized include solid solutions, intermediate crystalline phases, amorphous phases, and nanostructured materials. It has also been shown that the resistance to coarsening of both the grains and the dispersoids in mechanically alloyed Ti3Al-based alloys is much higher than in rapidly solidified alloys. The review concludes with some thoughts on future developments in this exciting area.