vibration. Compared with as-cast AZ91 alloy, grain size of matrix in the SiCp/AZ91
nanocomposite decreased and morphology of phase Mg 17 Al 12 varied from coarse plates
to lamellar precipitates. Although there were still some SiC microclusters in the
nanocomposite, most of the SiC nanoparticles were dispersed well outside the
microclusters. The ultimate tensile strength, yield strength and elongation to fracture of the …