▎ 摘　　要

NOVELTY - Preparing graphene-reinforced aluminum-base composite material comprises graphite C, solid powder, aluminum alloy, absolute ethanol, oxygen-argon, oxidation casting coating agent, combination dosage is g, ml, and cm 3 as measuring unit (a) cutting the aluminum alloy, weighing aluminum alloy block 100 g plus minus 0.001 g, mechanical cutting, preparing granule, where the granule diameter is less than or equal to phi 3 mm, (b) weighing graphene powder 10 plus minus 0.001 g, aluminum alloy grains is 100 plus minus 0.001 g, adding into a quartz container, stirring and mixing to form graphene aluminum alloy mixed particles, (c) placing the graphite aluminum alloy mixed particles into a ball milling pot for ball milling, ball milling at 350 revolutions/minutes for 30 minutes, to obtain graphene aluminum alloy mixed powder, (d) preparing of aluminum alloy semi-solid slurry aluminum alloy semi-solid slurry using the scanning electron microscope to the casting shape analysis, metallographic analysis to the casting for metallographic analysis. USE - The method is useful for preparing graphene-reinforced aluminum-base composite material. DETAILED DESCRIPTION - Preparing graphene-reinforced aluminum-base composite material comprises 10 plus minus 0.01 g graphite C, solid powder, 5100 plus minus 0.001 g aluminum alloy ZL101A, 10000 plus minus 50 ml absolute ethanol, 800000 plus minus 100 cm3 oxygen-argon, 500 plus minus 5 ml oxidation casting coating agent, combination dosage is g, ml, and cm 3 as measuring unit (a) cutting the aluminum alloy, weighing aluminum alloy block 100 g plus minus 0.001 g, mechanical cutting, preparing granule, where the granule diameter is less than or equal to phi 3 mm, (b) weighing graphene powder 10 g + 0.001 g, aluminum alloy grains is 100 plus minus 0.001 g, adding into a quartz container, stirring and mixing to form graphene aluminum alloy mixed particles, (c) placing the graphite aluminum alloy mixed particles into a ball milling pot for ball milling, where the volume ratio of the grinding ball to the graphene aluminum alloy particles is 3:1, ball milling at 350 revolutions/minutes for 30 minutes, to obtain graphene aluminum alloy mixed powder, (d) preparing of aluminum alloy semi-solid slurry aluminum alloy semi-solid slurry is prepared in a melting and stirring atmosphere furnace, heating, melting, heat preservation stewing, cooling to solid and liquid interval, adding graphene into aluminum alloy mixed powder, carrying out electromagnetic stirring process, using melting atmosphere furnace, cleaning the smelting crucible and cleaning by absolute ethanol to inside the crucible clean, (cutting aluminum alloy block, weighing 5000 g plus minus 0.001 g aluminum alloy block is arranged on the steel plate, mechanical cutting, where the block size is less than or equal to 50x 50x 50mm, placing the aluminum alloy block in the bottom of the crucible, closing the melting atmosphere furnace, opening the vacuum pump, extracting the air in the furnace, where the pressure in the furnace is less than or equal to 2Pa, starting melting atmosphere furnace heater, starting pre-heating, pre-heating at 200 degrees C for 15 minutes, continuously heating, raising the temperature in the furnace to 550 degrees C, argon bottom blow pipe is introduced into the bottom of the melting crucible, placing the argon into a crucible, where the argon bottom blowing speed is 200 cm3/minute, maintaining the pressure in the furnace at 1 atmosphere, controlling the outlet valve, continuously heating and smelting, smelting 720 plus minus 1 degrees C, heat preservation for 10 minutes, adding the ball-milled graphene aluminum alloy mixed fine powder to the argon graphene control cabinet, adjusting the temperature in the furnace at 580 plus minus 1 degrees C for 5 minutes, opening the control switch of electromagnetic stirring device, turning on the electromagnetic stirring device control switch, simultaneously the argon graphene control cabinet is turned on, passing graphene aluminum alloy mixed fine powder into the melt, adjusting the electromagnetic stirring device, stirring frequency is 35 Hz, stirring for 15 minutes, after electromagnetic stirring, closing the argon gas bottom blowing pipe to obtain graphene-containing aluminum alloy semi-solid sizing agent, squeezing and casting semisolid to obtain graphene-reinforced aluminum-base composite material, pre-heating the extrusion casting mold in a heat treatment furnace, pre-heating at 200 degrees C for 30 minutes, (extrusion casting mold of cavity surface pretreatment coating agent zinc oxide 500 plus minus 5 ml, uniformly coating the extrusion die cavity surface, where the coating layer thickness is less than or equal to 0.15 mm, mixing the graphene-containing aluminum alloy semi-solid sizing agent, adding into extruding mold, then performing extruding on an extruder, extrusion pressure is 150 Mpa, and maintaining pressure for 20 seconds, cooling, extruding the embedded fine sand in the casting mold and cooling to 25 degrees C, opening the mold, cleaning the mold and taking out the casting, cleaning casting surface, cleaning by absolute ethanol, cleaning and drying, making the surface clean, detecting, analyzing and Characterizing the morphology of the prepared graphene reinforced aluminum matrix composite, color, metallographic organization, mechanical properties testing, analysis and characterizing, using the scanning electron microscope to the casting shape analysis, metallographic analysis to the casting for metallographic analysis, microcomputer controlled electronic universal testing machine for tensile strength analysis to the casting, where the tensile strength analysis of the castings was carried out by a microcomputer-controlled electronic universal testing machine, hardness analysis of castings using Vickers hardness tester, graphene reinforced aluminum matrix composite is a rectangular block, hardness is 87 HB, increased by 69.92% relative to the substrate, tensile strength is 255 Mpa, increase of 57.46% relative to the substrate, extension rate is 8%, 5% higher than the substrate, density is 99.6%, graphene is uniformly dispersed on the aluminum alloy matrix, having excellent interface with aluminum substrate.