▎ 摘　　要

NOVELTY - Graphene reinforced low-cerium aluminum-silicon-magnesium alloy comprises 6.5-7.5 wt.% silicon, 0.25-0.45 wt.% magnesium, 0.40 wt.% cerium, 0.001-0.007 wt.% graphene, less than or equal to 0.05 wt.% iron, less than or equal to 0.2 wt.% zinc, less than or equal to 0.1 wt.% manganese, less than or equal to 0.1 wt.% titanium, less than or equal to 0.15 wt.% zirconium, less than or equal to 0.1wt.% beryllium, less than or equal to 0.05 wt.% tin, less than or equal to 0.1wt.% lead, other unavoidable elements: each less than or equal to 0.03 wt.% and total less than or equal to 0.10 wt.% and aluminum (balance amount). USE - The graphene reinforced low-cerium aluminum-silicon-magnesium alloy is useful in the automotive industry. ADVANTAGE - The graphene reinforced low-cerium aluminum-silicon-magnesium alloy has high tensile strength, yield strength and elongation, and the casting method: has mild casting conditions, simple process and low casting cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for casting graphene reinforced low-cerium aluminum-silicon-magnesium alloy comprising (i) laying a layer of aluminum particles on the bottom of the melting furnace requires that the aluminum particles be completely covered without gaps, then spreading the other raw material particle and covering with a layer of aluminum particles, (ii) closing the smelting furnace, starting the vacuum pump extracting the air in the furnace, then charging high purity argon gas for washing, continuously vacuumizing to low pressure 50 Pa, and filling high pure argon gas as protective atmosphere until the gas pressure is 500 Pa, (iii) turn on the melting furnace power supply and starting melting the alloy, where the melting process: heating with 200-210 A current for 200-280 seconds, so that increasing furnace temperature to 600 plus minus 5 degrees C; then heating with a current of 230-240 A for 100-140 seconds, so that increasing furnace temperature to 700 plus minus 5 degrees C, keeping the current constant, shaking for 60 seconds, the amplitude is the smelting furnace crucible axis positive and negative 15 degrees , shaking frequency is 50-60 times/minute, then increasing the current to 245-255A, the furnace temperature reaches 750 plus minus 5 degrees C, slightly shaking for 60 seconds, the amplitude of shaking is 10 degrees of the central axis of the melting furnace, the shaking frequency is 50-60 times/minute, finally turn off the power, when the temperature of the molten metal is lowered to 650 plus minus 5 degrees C, casting the alloy in a graphite mold and cooling, and (v) after casting, adopting vacuum pumped high temperature gas furnace, then vacuumizing for 30-40 seconds, then filling argon at room temperature, and then sampling after 520-580 seconds to obtain final product.