The mixture of elemental powders of (1) Ti(50at%)-Al(50at%), (2) Ni(76at%)-Al(24at%) and (3) Ti(50at%)-Ni(50at%) were offered to the mechanical alloying (MA) process. The ultra-fine grained (average grain diameter <0.2μm) compacts consisting of (TiAl+Al ₃Ti), Ni ₃ Al and (TiNi+Ni ₃Ti) intermetallic compounds were obtained by vacuum hot pressing (at 1173-1223K) of MA processed powders of (1), (2) and (3), respectively.
Since the MA processed powder of (3) indicated amorphous state, it was also offered to the vacuum warm pressing at 723K (bellow crystallization temperature) under 1300MPa. The compact was produced in an amorphous state.