▎ 摘　　要

NOVELTY - Aluminum-magnesium alloy ingot comprises 1.2-2.0 wt.% graphene composite material, 3.8-5.2 wt.% aluminum, 0.6-0.9 wt.% zinc, 0.2-0.4 wt.% manganese, 0.05-0.15 wt.% aluminum-titanium-carbon-boron master alloy, less than or equal to 0.05% unavoidable impurities and magnesium. The graphene composite material is graphene/samarium oxide composite material. USE - Aluminum-magnesium alloy ingot. ADVANTAGE - The ingot has corrosion resistance, good mechanical property, and even grain refining effect. DETAILED DESCRIPTION - Aluminum-magnesium alloy ingot comprises 1.2-2.0 wt.% graphene composite material, 3.8-5.2 wt.% aluminum, 0.6-0.9 wt.% zinc, 0.2-0.4 wt.% manganese, 0.05-0.15 wt.% aluminum-titanium-carbon-boron master alloy, less than or equal to 0.05% unavoidable impurities and magnesium. The graphene composite material is graphene/samarium oxide composite material. The preparation of aluminum-magnesium alloy ingot comprises dispersing graphene oxide powder into deionized water, configuring into 1-1.5 mg/mL graphene oxide aqueous solution, sonicating into ultrasonic wave washer under 60-100 W power for 25-30 minutes to obtain dispersed graphene oxide aqueous suspension system, and ultrasonically cleaning at 20-25 degrees C. The preparation of graphene/samarium oxide composite material comprises adding samarium nitrate to graphene oxide aqueous suspension system for 30-40 minutes, refluxing at 100-105 degrees C for 20-24 hours, refluxing, cooling at 60-70 degrees C, adding sodium borohydride to graphene oxide powder at mass ratio of 1:0.2-0.4:10, reacting for 3-4 hours, vacuum filtering mixed suspension, washing, vacuum drying, and calcining at 550-600 degrees C for 5-8 hours to obtain graphene/samarium oxide composite material.