The process refines the structure of the ductile matrix powders because of the repetitive steps of deformation, welding, and fracture. On the other hand, the brittle ceramic particles mostly fracture during the MM and remain trapped between the matrix powders [10. Neverthe- less, reinforcement can form small clusters, generating a non- homogeneous microstructure, a situation which adversely affects the expected mechanical properties ofthe composite [11.Therefore, to ob- tain a desirable microstructure and to improve mechanical properties it is essential for all the particles to be homogeneously distributed in the mixture [12], Kuruvilla et al. [13] argued that strengthening observed in an AITiB2 based composite is mainly attributed to fine dispersion of