Novel aluminum alloy

Abstract

The invention relates to a novel aluminum alloy; the content of Si in the aluminum alloy is adjusted, based on the aluminum alloy A356.2; the chemical components thereof are as follows: larger than 7.5 to 8.2 percent of Si, 0.28 to 0.45 percent of Mg, 0.08 to 0.20 percent of Ti, not larger than 0.12 percent of Fe, not larger than 0.01 percent of Cu, not larger than 0.01 percent of Zn, not larger than 0.05 percent of Mn, not larger than 0.05 percent of Zr, not larger than 0.01 percent of Ni, not larger than 0.01 percent of Sn, not larger than 0.10 percent of microelements and the rest is Al. In the invention, as the content of Si in the aluminum alloy is properly added, the novel aluminum alloy can optimize the matching between the anti-tension intensity and the extending rate of the aluminum alloy, increase the anti-impact performance of the product and simultaneously improve the casting fluidity of the aluminum alloy and effectively reduce the casting defect; therefore, the novel aluminum alloy has the characteristics of optimizing the matching between the anti-tension intensity and the extending rate of the aluminum alloy, increasing the anti-impact performance of the product, improving the casting fluidity, avoiding casting defect, improving the product quality, and the like.

Description

1. Technical field: [0001] The present invention relates to a new aluminum alloy, in particular to a new aluminum alloy material mainly used for automobile wheel hubs, and can also be used in other ways. 2. Background technology: [0002] With the rapid development of my country's automobile industry and the continuous improvement of people's living standards, the demand for automobiles is increasing, and the requirements for automobile performance are getting higher and higher, especially the safety performance of automobile driving. The car wheel hub is an important force-bearing part of the car, and plays an important role in the driving safety of the car. At present, the material used to produce aluminum alloy wheels for automobiles is mainly aluminum alloy A356.2, and its chemical composition is: Si: 6.5-7.5%, Mg: 0.28-0.45%, Ti: 0.08-0.20.%, Fe: ≯0.12% , Cu: ≯0.01%, Zn: ≯0.01%, Mn: ≯0.05%, Zr: ≯0.05%, Ni: ≯0.01%, Sn: ≯0.01%; other trace elements ≯0.10%. The alloy has...

AI Technical Summary

Problems solved by technology

The alloy has the following disadvantages: its tensile strength and elongation are low, its fluidity is poor during casting production, and it is easy to cause casting defects

Thereby affecting the performance of the hub