This invention provides a Gr / Al-Mg2Si-
Mg composite powder, its preparation method,
alloy components, and end products. The composite
powder comprises 6.0%~14.0% Mg, 1.0%~6.0% Si, 0.1%~0.6% Mn, 0.1%~0.2% Ti, 0.28%~0.32% Al-5Ti-B, 1.0%~8.0% Mg2Si, and 0.5%~3%
graphene Gr, with the balance being Al. By increasing the Mg content and adding a small amount of Si, the content of the Mg2Si reinforcing phase is increased. Simultaneously, in addition to introducing small amounts of Mn and Ti,
graphene Gr is introduced as a reinforcement to significantly improve mechanical properties. Through
forming processes such as
selective laser melting,
alloy components with high yield strength, high tensile strength, and high elongation can be formed, filling the gap in low-cost, high-strength aluminum
alloy systems produced by
selective laser melting.