High-strength wear-resistant aluminum alloy

Abstract

The invention discloses high-strength wear-resistant aluminum alloy prepared from the following components in percentage by weight: 0.23% of yttrium oxide and neodymium oxide, 1.52% of silicon, 1.4% of copper, 0.37% of iron, 0.88% of cobalt and nickel, 0.14% of magnesium, 0.028% of titanium, strontium and beryllium, 0.14% of manganese, 0.02% of chromium and the balance of aluminum. The elements including titanium, strontium and beryllium which are at a fixed ratio are added into the aluminum alloy, so that the strength, wear resistance and toughness of the aluminum alloy are effectively improved; in addition, after the elements including cobalt and nickel which are at a fixed ratio are added into the aluminum alloy, a cast product can generate a favorable grain refinement function, casting cracks are effectively overcome, the appearance of a casting and the surface quality are improved, and the hardness of the aluminum alloy is improved; yttrium oxide and neodymium oxide which are at a fixed ratio are added and take a synergistic effect, so that the corrosion resistance of the aluminum alloy is improved; and the impact toughness of the aluminum alloy is effectively improved by 25.2%.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a high-strength wear-resistant aluminum alloy. Background technique [0002] Aluminum alloy is an extended product of pure aluminum. The density of pure aluminum is small (ρ=2.7g / m3), about 1 / 3 of that of iron, and its melting point is low, about 660°C. Aluminum has a face-centered cubic structure, so it has High plasticity (δ: 32-40%, ψ: 70-90%), so it is easy to process, can be made into various profiles and plates, and has good corrosion resistance. However, the strength of pure aluminum is very low, so it is not suitable for structural materials. Through long-term production practice and scientific experiments, people have gradually strengthened aluminum by adding alloying elements and using heat treatment, which resulted in a series of aluminum alloys. The alloy formed by adding certain elements to pure aluminum can also have high strength while maintaining the advantages ...

AI Technical Summary

Problems solved by technology

However, the strength of pure aluminum is very low, so it is not suitable for structural materials.