Processing method and application of novel high-thermal-conductivity aluminum alloy material

The invention relates to the technical field of die castings, in particular to a processing method and application of a novel high-thermal-conductivity aluminum alloy material, and the aluminum alloy material comprises the following components by mass percent: 6.5-7.5% of Si; 0.24 to 0.3% of Mg; mn: 0.52 to 0.88%; 0.12% or less of Fe; 0.12% to 0.16% of Ti; ca: less than or equal to 0.0008%; 0.018% to 0.025% of Sr; less than or equal to 0.002% of Sb; be is less than or equal to 0.00008%, and other single impurity elements are less than or equal to 0.03%; the total amount of other impurities is less than or equal to 0.12%; the preparation method comprises the following steps of material warehousing, material proportioning, raw material feeding into a furnace, alloy smelting, component detection, alloy refining, test bar casting and alloy casting, and the aluminum alloy material has excellent casting performance, mechanical performance and ductility, has high heat conductivity, can be free of heat treatment and