Abstract
Mg-Si alloy have high potential as heat resistant light metals because Mg2Si exhibits a high melting temperature, low density, low thermal expansion coefficient, and a reasonably high elastic modulus. However, ingot metallurgy Mg-Si alloy showed very low ductility and strength. Then, by applying the solid-state formation of Mg_2Si by spark plasma sintering, magnesium composite alloys, including a large amount of Mg2Si particles, were fabricated. The density of the sintered Mg-Si alloy decreases with the increases of addition of Mg2Si. However, the elastic coefficient of them increases with increase in the amount of the additives.
