What is the alloy composition of aluminum alloy wheels for automobiles? What are the alloy elements?
Dec 27, 2022
It is an Al Mg Si alloy with medium strength, good plasticity, and excellent corrosion resistance. Especially, it does not tend to stress corrosion cracking. It has excellent weldability, corrosion resistance, and cold workability. It is a promising alloy with a wide range of applications. It can be anodized and colored, or painted with enamel, and is suitable for building decoration materials. It contains a small amount of Cu, so its strength is higher than 6063, but its quenching sensitivity is also higher than 6063.
After extrusion, it cannot be air quenched, so it needs to be re-solution treated, quenched, and aged to obtain higher strength. The main alloying elements of 6061 aluminum alloy are magnesium and silicon, and the Mg2Si phase is formed. If it contains a certain amount of manganese and chromium, it can neutralize the bad effect of iron; Sometimes a small amount of copper or zinc is added to improve the strength of the alloy without significantly reducing its corrosion resistance; There is also a small amount of copper in the conductive material to offset the negative effects of titanium and iron on the conductivity; Zirconium or titanium can refine grains and control recrystallization structure; To improve the machinability, lead and bismuth can be added. Mg2Si is dissolved in aluminum, so that the alloy has the function of artificial age hardening. The main alloy elements in 6061 aluminum alloy are magnesium and silicon, which have medium strength, good corrosion resistance, weldability, and good oxidation resistance.
Alcoa 6061-T651 is the main alloy of the 6 series alloy, and it is a high-quality aluminum alloy product with heat treatment and pre-stretching process; Alcoa 6061 has excellent processing performance, good corrosion resistance, high toughness, no deformation after processing, easy color coating, excellent oxidation effect, and other excellent characteristics. Main application: It is widely used in various industrial structural parts requiring certain strength and high corrosion resistance, such as manufacturing trucks, tower buildings, ships, trams, and railway vehicles.
