Wear-resisting-type aluminum-silicon alloy

Abstract

The invention provides a wear-resisting-type aluminum-silicon alloy. The wear-resisting-type aluminum-silicon alloy is composed of the following elements of, by mass, 12-15% of silicon, 1-3.5% of copper, 2-4% of magnesium, 0.5-0.7% of zinc, 0.2-1% of boron, 0.1-0.5% of vanadium, 0.4-0.8% of manganese, 0.5-1% of antimony, 0.2-0.38% of osmium, 0.15-0.25% of iridium and the balance aluminum and impurities. All the elements in the wear-resisting-type aluminum-silicon alloy mutually synergistically act, the wear-resisting property and hardness of an aluminum alloy are enhanced, the hardness of thewear-resisting-type aluminum-silicon alloy is 620-670, and the alkali-corrosion-resisting property of the wear-resisting-type aluminum-silicon alloy is also remarkably improved.

Description

technical field [0001] The invention relates to the field of aluminum alloys, and specifically relates to a wear-resistant aluminum-silicon alloy. Background technique [0002] Aluminum alloy has low density, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various types of materials, and has excellent electrical conductivity, thermal conductivity and corrosion resistance. Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and it is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding, aluminum alloy and chemical industry. [0003] The density of pure aluminum is small, about 1 / 3 of that of iron, and its melting point is low at 660°C. Aluminum has a face-centered cubic structure, so it has high plasticity and is easy to process. It can be made into various profiles and plates, aluminum alloys The corrosion resistance is good, but the strength...

AI Technical Summary

Problems solved by technology

[0004] Aluminum-silicon alloy is a common aluminum alloy. Changes in the ratio of aluminum to silicon can have a great impact on hardness. For example, when the silicon content is less than 7%, the aluminum-silicon alloy has good ductility, and the silicon content exceeds the aluminum-silicon eutectic. (11.7% silicon), the silicon particles in the alloy increase significantly, and the hardness and wear resistance of the alloy also increase significantly. The existing method uses electrochemical treatment of the aluminum-silicon alloy to erode the surface aluminum and retain the silicon in the matrix , in order to further improve its wear resistance and hardness, but this method has the problems of complicated operation and difficult control of processing quality