The alloying additives of aluminum alloy mainly include silicon, ? magnesium, ? manganese, ? copper, ? zinc and other elements. ? These additives play a vital role in the preparation of aluminum alloys, ? by adding one or more metallic or non-metallic elements to improve the properties of aluminum alloys. ? In particular, the types and applications of ? aluminum alloy element additives are as follows: ?

Silicon (?Si) ? : ? silicon is a common additive element in aluminum alloy, ? it can improve the hardness of aluminum alloy, ? wear resistance and corrosion resistance. ?

Magnesium (?Mg) ? : ? As a light element, magnesium ? added to aluminum alloy can significantly reduce the density of the alloy, ? at the same time improve its strength and corrosion resistance. ?

Manganese (?Mn) ? : ? manganese can improve the hardness and wear resistance of aluminum alloy, ? also helps to improve the corrosion resistance of the alloy. ?

Copper (?Cu) ? : ? The addition of copper can increase the strength and hardness of aluminum alloy ?, but it will also affect its processability and corrosion resistance. ?

Zinc (?Zn) ? : ? zinc can improve the strength and corrosion resistance of aluminum alloy, ? also helps to improve the casting performance of the alloy. ?

In addition, there are some specific ? additive for a particular purpose, ?, such as titanium (?, ?, ? Ti) Cr (?, ?, ? Cr) strontium (? Sr) zirconium ?, ?, ?, ? Zr), etc., ? each with a specific role, ?, such as fine grains, increase mechanical properties of the material in ?, ? improve plastic processability, etc. ? For example, ?

Titanium (?Ti) ? : ? Adding titanium to aluminum alloy can refine grain, ? improve the strength and toughness of the alloy. ?

Chromium (?Cr) ? : ? chromium can improve the hardness and wear resistance of aluminum alloy, ? also helps to improve the toughness of alloy and reduce stress corrosion cracking sensitivity. ?

Strontium (?Sr) ? : ? As a surface active element, strontium ? can improve the plastic workability of alloys and the final product quality. ?

Zirconium (?Zr) ? : ? zirconium can refine the casting structure, ? hinder the recrystallization process, ? thereby improving the properties of aluminum alloy. ?

The use of these additives is not limited to the above mentioned elements, ? also includes a variety of other elements, ? the specific selection depends on the specific application needs and performance requirements of the aluminum alloy. ?