What are the components of aluminum alloying additives

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. ‌