Effects of Mg and MgO Nanoparticles on Microstructural and Mechanical Properties of Aluminum Matrix Composite Prepared via Mechanical Alloying

Aluminum-based composites reinforced with ceramic particles have been used for many applications because of their high hardness, good wear resistance, low weight, and thermal expansion coefficient. The Al-MgO/Mg composite was prepared in the present study. effects milling time amounts initial Mg MgO were studied on properties composite. milled powder mixtures subsequently analyzed by XRD SEM tests. Crystal sizes internal strains calculated using data Williamson-Hall equation. hardness samples measured Vickers method. results showed that lattice parameter significantly increased increasing amount Mg. During milling, crystallite size, simultaneously strain MgO. also higher than particles.