Abstract: The disclosure pertains to a high-performance, low-cost aluminum alloy material produced entirely from recycled materials and its preparation method. The alloy comprises the following components by weight percentage: Si: 10%-11%; Mg: 0.50%-0.65%; Mn: 0.01%-0.20%; Cu: 1.0%-1.2%; 0<Ni?0.5%; Fe: 0.7%-0.9%; 0<Ti?0.20%; Zn: 2.0%-2.5%; 0<Pb?0.1%; 0<Sn?0.1%; the total of the remaining impurities being controlled at less than 1%, with the balance being Al. Compared with a conventional ADC12 alloy, the raw materials are more widely available and the cost is lower, but the mechanical performance, thermal conductivity and weather resistance are all superior to the ADC12 alloy. The alloy die-casting test bar of the present disclosure has a tensile strength ?270 Mpa, a yield strength ?150 MPa, an elongation ?2.5%, and a thermal conductivity ?110W/m·k. The material is a green material that complies with circular economy.

Abstract: The disclosure pertains to a high-performance, low-cost aluminum alloy material produced entirely from recycled materials and its preparation method. The alloy comprises the following components by weight percentage: Si: 10%-11%; Mg: 0.50%-0.65%; Mn: 0.01%-0.20%; Cu: 1.0%-1.2%; 0<Ni?0.5%; Fe: 0.7%-0.9%; 0<Ti?0.20%; Zn: 2.0%-2.5%; 0<Pb?0.1%; 0<Sn?0.1%; the total of the remaining impurities being controlled at less than 1%, with the balance being Al. Compared with a conventional ADC12 alloy, the raw materials are more widely available and the cost is lower, but the mechanical performance, thermal conductivity and weather resistance are all superior to the ADC12 alloy. The alloy die-casting test bar of the present disclosure has a tensile strength ?270 Mpa, a yield strength ?150 MPa, an elongation ?2.5%, and a thermal conductivity ?110W/m·k. The material is a green material that complies with circular economy.