Abstract
The mechanical properties of the solid-state synthesized Mg_2Si/Mg composites from the mixed Mg-Si powders have been investigated. Results indicate 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 Mg_2Si depends on the initial Si size; the mechanical properties of the Mg_2Si/Mg composite are therefore remarkably improved by using fine Si particles or by decreasing the grain size of Mg matrix grains via bulk mechanical alloying process.
