▎ 摘　　要

NOVELTY - A high strength power transmission line aluminum alloy composite material comprises 0.4-0.8 wt.% silicon, 0.12-0.4 wt.% iron, 0.02-0.05 wt.% copper, 0.5-0.9 wt.% magnesium, 0.4-0.9 wt.% boron, 0.5-1.2 wt.% graphene, remaining aluminum and unavoidable impurities. USE - High-strength power transmission line aluminum alloy composite material of transmission line (claimed). ADVANTAGE - The high-strength transmission line aluminum alloy composite material graphene is capable of improving the mechanical property of the material under the premise of ensuring the conductivity is not reduced. The aluminum alloy density difference is large, floating on the surface of the aluminum alloy, so as to obtain the aluminum alloy composite graphene and uniform dispersion. The silicon and magnesium in the graphene material form magnesium-silicon reinforced phase, to obviously improve the strength of aluminum alloy. The copper effectively improves the strength and conductivity of the alloy, iron improves strength and creep resistance of the wire, and boron improves conductivity. The graphene uniformly disperses in the aluminum alloys by using graphene, reducing the agglomeration between the graphene, and reducing the delamination of graphene material and the alloy. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a preparation method of high-strength power transmission line aluminum alloy composite material; and (2) a transmission line.