Fe-5mass%Al was synthesized by mechanical alloying(MA) of Fe powder and Al powder using a vibrational ball milling for 720ks in 35kPa argon gas atmosphere. The MA powder of 6.5nm in grain size was solid solution of Fe and Al in this experimental condition.
Fe-28.6mass%Al(FeAl) sample, which was prepared by mixing of mechanical alloyed t Fe-5mass%Al powder and Al powder, was sintered at 1200K after pressing. The sintered sample was composed of FeAl phase only. As the temperature of reaction between MA powder and Al was higher than the melting point of Al, FeAI was formed under existence of Al liquid. Furthermore, FeAl-40mass%WC composite was synthesized by this process.