Abstract
Mechanical alloying of Ti-base intermetallic compound (Ti -C- 20mass%Ni, Ti -30mass%Al, Ti -26mass%Si) was performed using a vibrational ball mill in Ar or N2 under diminished pressure. The effect of nitrogen on the mechanical alloyed Ti-base intermetallic compound was studied by X-ray diffraction, EPMA and DSC.
Results from X-ray diffraction, EPMA and DSC suggested that the synthesis of TiN was carried out in N2 atomosphere under diminished pressure and tended to retard the MA reaction. And the heat treatment of powder, which was mechanical alloyed in Ar under diminished pressure, at 1173K for 1.8ksec in N2 flow made the needle-like shape of the crystals.
