In the same way, Abdizadeh al. [9] incorporated partially method. The Zro2 particles into an A365 Al using the vortex of 240 MPa; results showed a hardness of 70 HBN and atensile strength and in comparison, the unreinforced matrix exhibited 45 HBN 45 MPA, respectively. One important fabrication route of composites, is the mechanical milling (MM) process, since the dispersion of the reinforcement is car- ried out in solid state, unlike casting routes, where the density differ- ence between the matrix and the reinforcement commonly makes difficult to obtain a homogeneous dispersion of the later 12,3]. The consists in repetitive collisions of the milling media (vials and grinding balls) with the matrix and the reinforcement particles. The process refines the structure ofthe 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