The invention discloses a heat treatment method for aluminum
alloy containing
graphene. The aluminum
alloy comprises the following ingredients of, in percentage by
mass, 8-10% of
metal fibre, 5.5-7.2%of Mg, 2.0-3.5% of Fe, 1.2-2.6% of
graphene, 0.08-0.18% of Sc, 0.08-0.18% of Zr, 0.12-0.22% of Y, 0.02-0.07% of Si, 0.02-0.07% of Mn, 0.01-0.03% of Er, 0.01-0.03% of Ce, less than or equal to 0.15% of impurities and the balance Al. The heat treatment method comprises the steps that S1, the aluminum
alloy is heated to 300-400 DEG C, heat preservation is performed for 4-8 h, the temperature is raised to 500-600 DEG C, heat preservation is performed for 3-6 h, the temperature is reduced to 100-200 DEG C, and heat preservation is performed for 2-3 h; S2, water
quenching treatment is performed, wherein the temperature of water is 25-60 DEG C; S3, the aluminum alloy after water
quenching is subjected to
tempering with the temperature being 300-400 DEG C; S4, then annealing treatment is performed, the temperature of annealing treatment is 100-200 DEG C, and the time is 6-10 h. By means of the heat treatment method provided by the invention, the strength of the aluminum alloy containing
graphene is improved, the maximum strength of the aluminum alloy can be improved to 685, in addition, the invention further comprises the aluminum alloy prepared by the heat treatment method.