Wear-resistance and heat-resistance aluminum alloy

Abstract

The invention belongs to the field of aluminum alloys, and in particular, relates to a wear-resistance and heat-resistance aluminum alloy. The alloy comprises the following components in percentage by weight: 5-12% of silicon, 3-8% of magnesium, 0.8-1.2% of iron, 2-5% of titanium, 0.1-0.5% of manganese, 0.8-1.5% of strontium, 0.01-0.05% of ytterbium, 0.5-0.8% of tungsten, 0.5-0.8% of copper, 3-5% of aluminum, 0.2-0.3% of cerium, 0.5-1.8% of zinc, and 0.8-1.5% of chromium. Through the components, the wear resistance and the heat resistance of the aluminum alloy can be obviously improved, and the hardness reaches about 600.

Description

technical field [0001] The invention belongs to the field of aluminum alloys, in particular to a wear-resistant and heat-resistant aluminum alloy. Background technique [0002] 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 After the point (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 is to retain the silicon in the matrix by electrochemically treating the aluminum-silicon alloy to erode the surface aluminum , in order to further improve its wear resistance and hardness. However, this method has the problems of complicated operation and difficult control of processing quality. At the same time, the resea...

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Problems solved by technology

[0002] 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 After the point (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 is to retain the silicon in the matrix by electrochemically treating the aluminum-silicon alloy to erode the surface aluminum , in order to further improve its wear resistance and hardness. However, this method has the problems of complicated operation and difficult control of processing quality. At the same time, the research on the high temperature fatigue strength of aluminum alloy is also the focus of people's research. At present, there are many aluminum alloys with good heat resistance. Aluminum alloys, but aluminum alloys with wear resistance and heat resistance are relatively rare