The main alloying elements of 6061 aluminum alloy are magnesium and silicon, and form the Mg2Si phase. If it contains a certain amount of manganese and chromium, it can neutralize the bad effects 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 are also a small amount of conductive materials. of copper to offset the adverse effects of titanium and iron on conductivity; zirconium or titanium can refine the grains and control the recrystallized structure; in order to improve the machinability, lead and bismuth can be added.
Mg2Si is solid dissolved in aluminum, giving the alloy artificial age hardening properties. The main alloying elements in 6061 aluminum alloy are magnesium and silicon. It has medium strength, good corrosion resistance, weldability, and good oxidation effect.