The effect of SPEX mechanichal milling on a mixture of Al-SiC
composites has been investigated. Results of XRD, SEM and commulative
size distribution analysis show that the size of crystallites is decreased as
milling time increses to 12 hours, while lattice strains are increased.
Meanwhile the crytallite size increases with increasing miling time between
12 and 24 hours, but the lattice strains decreas. In addition, average particle
size of the composite decreses at initial 6 hours but increases for longer
milling times. SEM and TEM micrographs of the productions indicate
homogeneous distribution of 50 nm size SiC particles into Al matrix, where
the homogeneuty increases with increasing milling time.