Abstract
Effect of Mg on sintering phenomenon of aluminum alloy powder has been examined. The relative density of sintered material increased by 9% when the Mg content increased. XPS analysis clarified the chemical reaction at the most-top surface of aluminum alloy powder during heating. It is considered that Mg acted to deoxidize Al2O3 surface film of aluminum alloy powder and accelerated sintering between particles. As a result, the tensile strength and elongation of sintered materials remarkably increased and the dimples are observed at the fractured surface of the tensile test specimen when the Mg content in aluminum alloy powder increased.
