Abstract
Nb, Al, Ti, C and B powders were mechanically alloyed(MA) in an Ar gas atmosphere. The results of X-ray diffraction indicated that for the starting composition of Nb3Al, Nb solid solution was obtained in the early stage of MA process, thereafter it became to be amorphous. Nb3Al compound was obtained by vacuum heating of 72.0ks MA powders. Nb3Al and TiC were obtained in the system of the composition of Nb3Al-30vol%TiC by vacuum heating of 72.0ks MA powders. Furthermore, fine TiC particle dispersed Nb3Al composite was obtained by HIP processing of MA powders. TEM observation of the HIPed compacts revealed that TiC, which was more less than 0.1μm, precipitated on fine grained Nb3Al matrix.