2001 年 48 巻 5 号 p. 404-411
Pure magnesium powders were mechanically alloyed with addition of metal silicide powders (TiSi2, CrSi2 and WSi2) by using a planetary ball mill under an Ar atmosphere. After mechanical alloying, the powders were consolidated to the P/M material by vacuum hot pressing. Solid state reaction in the mechanically alloyed powders and the P/M material was studied by XRD and TEM. In these systems, the solid state reaction occurred during mechanical alloying and subsequent heat treatment. The added metal silicides were decomposed and Mg2Si dispersoids were formed in the Mg matrix which was alloyed with elements (Ti, Cr or W).