The invention relates to a method for preparing a
titanium aluminum
intermetallic compound from a hydrogenated
titanium-aluminum
alloy through a short process. High-purity aluminum and
titanium sponge serve as raw materials and are smelted into titanium-aluminum
alloy cast ingots in a vacuum consumable
electrode electric arc kish furnace or a
vacuum induction furnace, the cast ingots are then crushed to be
powder in a coarse mode, the
powder is subjected to
hydrogen treatment to obtain brittle hydrogenated
alloy powder, and then the alloy powder is grinded to be microfine titanium-aluminum alloy powder by using vortex air flows; rough bodies are formed by manufacturing the hydrogenated alloy powder and subjected to a
dehydrogenation reaction in the
sintering and heating process, the alloy powder after the
dehydrogenation reaction is high in surface activity and easy to densify through
sintering, and the titanium aluminum
intermetallic compound product is finally obtained and is high in purity, low in
oxygen content and high in
relative density. The method is short in technological process, high in operation stability, high in
repeatability and capable of achieving
mass continuous production; the prepared titanium-aluminum alloy powder has the advantages of being high in purity, low in
oxygen content, small in particle size, narrow in size distribution, good in evenness and the like and is suitable for
compression molding, injection molding and gelcasting molding.