Novel high-thermal-conductivity die-casting aluminum alloy and preparation method thereof

The invention relates to a novel high-thermal-conductivity die-casting aluminum alloy and a preparation method thereof, and the novel high-thermal-conductivity die-casting aluminum alloy is characterized by comprising the following components in percentage by mass: 1.5-2.5% of Ni, 0.5-1.5% of Fe, 0.5-1.0% of Mg, 0.9-1.8% of Zn, 0.1-0.3% of B, less than 0.3% of other inevitable impurities and the balance of Al. Meanwhile, high tensile strength, good percentage elongation after fracture and high heat conductivity are achieved, the casting performance meets the forming requirement of the thin-wall complex aluminum die casting, the tensile strength meets the requirements of assembly and actual use of the thin-wall complex aluminum die casting, and the heat conductivity meets the requirement that heat dissipation of a high-heat-consumption device shell is continuously improved. 本发明涉及一种新型高导热压铸铝合金及其制备方法，一种新型高导热压铸铝合金其特征在于，按照质量百分比计，包括有以下组分：Ni：1.5～2.5％，Fe：0.5～1.5％，Mg：0.5～1.0％，Zn：0.9～1.8％，B：0.1～0.3％，不可避免的其他杂质：＜0.3％，余量为A