Aluminum alloy, preparation method thereof and die casting

Abstract

The invention relates to an aluminum alloy which comprises the following components including 0.9%-1.4% of iron, 0.5%-0.9% of magnesium, 0.2%-0.5% of manganese, 0.15%-0.3% of silver, 0.2%-0.3% of scandium, 0.3%-0.5% of yttrium and the balance aluminum. The invention further relates to a preparation method of the aluminum alloy. The invention also relates to a die casting which is made of the aluminum alloy.

Description

technical field [0001] The invention relates to the field of nonferrous metal materials, in particular to an aluminum alloy, a preparation method of the aluminum alloy, and a die casting using the aluminum alloy. Background technique [0002] Aluminum alloy is lightweight and has many properties such as excellent thermal conductivity and high corrosion resistance, so it is widely used as a raw material for its components in automobiles, industrial machinery, aircraft, home appliances, and various other fields. One of them is the field of aluminum alloys for die-casting, and representative aluminum alloys include Al-Si-Cu-based aluminum alloys for die-casting, Al-Mg-based aluminum alloys for die-casting, and Al-Si-Mg-based aluminum alloys for die-casting. aluminum alloy. [0003] At present, die-casting aluminum alloy products such as sub-equipment substrates, heat pipe joints, and lubricating oil radiator collection boxes all need to be assembled by high-temperature brazing...

AI Technical Summary

Problems solved by technology

[0004] 1. Aluminum alloys for aluminum-silicon die-casting have a low melting point (below 550°C), and high-temperature brazing needs to be heated to about 600°C. Aluminum alloys for aluminum-silicon die-casting will soften when soaked in a high-temperature brazing bath for a long time even melted;

[0005] 2. Brazable die-casting aluminum alloy has the problem of poor castability, which is manifested by poor fluidity and filling property during casting (die-casting), wide solidification range, easy cracks in die-casting products, and die-casting production. Materials etc.