Mechanical properties of Mg₂Si/Mg composites via powder metallurgy process

The mechanical properties of the Mg₂Si/Mg composites solid-state synthesized from the mixed Mg-Si powders have been investigated. The macro-hardness (HRE) and the tensile strength of the composites increase with increasing the Si content and decreasing the Si size. The particle size of the synthesized Mg₂Si depends on the initial Si size; the mechanical properties of the Mg₂Si/Mg composite are remarkably improved by using fine Si particles or by decreasing the grain size of Mg matrix grains when the powder mixture was prepared via bulk mechanical alloying process.