Wear-resistant aluminum alloy

Abstract

The invention discloses a wear-resistant aluminum alloy which is a novel aluminum-silicon alloy and comprises the following raw material components in percentage by mass: 15-18% of silicon powder, 0.1-0.4% of copper powder, 1.5-4% of magnesium powder, 0.5-1% of titanium powder, 0.2-0.6% of manganese powder, 0.05-0.1% of carbon powder, 0.3-0.7% of chromium powder, 0.8-1.2% of iron powder, and the balance of aluminum powder and inevitable impurities. The novel aluminum-silicon alloy is prepared by mixing the elements, pressing into an ingot and performing high-temperature sintering. By virtue of the manner, the wear-resistant aluminum alloy disclosed by the invention has better wear resistance and corrosion resistance compared with a eutectic aluminum-silicon alloy, has good normal-temperature mechanical properties at the same time, and can be widely used in the machining industry.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a wear-resistant aluminum alloy. Background technique [0002] With the rapid development of science and technology and the national economy, the operating speed of mechanical equipment is getting higher and higher, and the speed of friction parts is getting faster and faster, and its service life is becoming more and more affecting modern equipment, especially high-speed operation An important factor in the production efficiency of the automatic production line. Therefore, the study of wear and the continuous development of new wear-resistant materials are topics that need to be discussed forever. [0003] Aluminum-silicon alloy has a series of advantages in terms of mechanical properties and casting properties, and is currently the most widely used type of cast aluminum alloy. The eutectic aluminum-silicon alloy developed this year has a silicon content of more than 12%, and ha...

AI Technical Summary

Problems solved by technology

The eutectic aluminum-silicon alloy developed this year has a silicon content of more than 12%, and has the characteristics of small thermal expansion coefficient, good density and volume stability, strong thermal conductivity, and good wear resistance. However, the processing technology of this type of alloy is complicated and requires Electrochemical treatment is performed on aluminum-silicon alloys to etch the aluminum on the surface and retain the silicon in the matrix, and the mechanical properties of this type of alloy at room temperature are poor, especially the elongation, which is generally only about 1%.