The appraisal of the reinforcement distribution indicates that 10 h of millin can be sufficient to avoid the agglomeration of them, a fact that could lead to harmful properties in the consolidated composite, since these clusters can act as stress concentrators and crack initiation sites, characteristics which are undesirable in subsequent processing 12,11
and 15 h Fig. 8aand b shows the AA 7075-5 wt. Zro2 composite at2 can be of milling time, respectively. A denser clustering of Zroz particles is not seen on the surface of the matrix powders at 2 this figure it the possible to discern the boundaries of the reinforcement, and seems to be greater because the Zro2 content in this sample is higher. otherwise, the composite processed by of ball milling is shown in Fig. 8b, here the situation seems to be completely different, because there was no heavy agglomeration of the reinforce- is tribution is more homogeneous.