▎ 摘　　要

NOVELTY - Preparing graphene-reinforced aluminum alloy material comprises: (1) physically dispersing graphene in an organic solvent to obtain a graphene dispersion; (2) modifying the aluminum alloy powder by using an organic hydrophilic modifier, and then removing the free organic hydrophilic modifier to obtain a surface-modified aluminum alloy powder; (3) adding organic solvent to the surface-modified aluminum alloy powder, and then slowly adding the graphene dispersion, wet-mixing uniformly, and drying to obtain a graphene-coated aluminum alloy powder; (4) maintaining the alloy powder as a solid, separating the oxygen, and pyrolyzing to remove organic hydrophilic modifier to obtain a graphene/aluminum alloy mixed powder, (5) packing the graphene/aluminum alloy mixed powder and compacting; and (6) mixing the powder in a heating tank to a semi-solid state, thermally insulating and homogenizing, performing semi-solid extrusion to obtain graphene-reinforced aluminum alloy material. USE - The method is useful for preparing a graphene-reinforced aluminum alloy material. ADVANTAGE - The method is simple to operate, produces alloy material with controllable graphene content and low requirement of the aluminum substrate, and can retain the integrity of the graphene and improve the bonding force with the substrate. The alloy material has density of 98.5% or more, conductivity comparable to that of the base aluminum alloy rod (more than 61% IACS), increased tensile strength of more than 20%, improved creep resistance of more than 50%, is suitable for preparing graphene reinforced metal material with long size, low production cost, and is suitable for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the graphene-reinforced aluminum alloy material.