▎ 摘　　要

NOVELTY - The method involves subjecting graphene and copper alloy powder to high-energy ball milling by a ball mill to form graphene-coated copper powder particle powder after mixing evenly, where thickness of graphene is 0.5-20nm, diameter of the graphene sheet is 0.5-20 mm, copper alloy powder comprises spherical particles with particle diameter of 10-100 mm and the graphene content is 0.5-10 wt% of the copper alloy powder. The ball mill is used to perform low-energy ball milling on the graphene-coated copper powder particles and the aluminum alloy powder such that the graphene-coated copper powder particles are evenly distributed in the aluminum alloy powder. A laser powder bed fusion technology is used to form the mixed powder. A laser remelting scanning method is introduced. Remelting scanning process is changed to obtain an aluminum matrix composite material reinforced by graphene-coated copper powder particles. USE - Method for manufacturing graphene-coated copper powder granular reinforced aluminum matrix composite material. ADVANTAGE - The method enables using graphene with high excellent conductivity and excellent strength and toughness. The method enables using the copper powder particles coated by the graphene as an enhanced phase to avoid an agglomeration problem of the graphene. The method enables controlling the remelting scanning technique of Laser powder bed fusion (LPBF) technology to reduce internal defect of tissue in inexpensive manner, thus improving conductivity and ensuring that technique applicability is strong. The method enables using copper powder particle coated by graphene as reinforcing particles and using low energy ball milling technique to prepare the aluminum-based composite powder, so that the graphene is not easy to agglomersate, and spherical degree and fluidity are good as the aluminum-based powder satisfies LPBF technique requirement, thus facilitating smooth of paving powder and feeding powder in the LPBF forming process. DETAILED DESCRIPTION - The ball mill is planetary ball mill or stirring ball mill. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for manufacturing graphene-coated copper powder granular reinforced aluminum matrix composite material. (Drawing includes non-English language text).