Magnesium alloys are alloys based on magnesium and added with other elements, such as aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. Magnesium alloy has the advantages of low density, high strength, large elastic modulus, good heat dissipation, good shock absorption, etc., and has a greater ability to withstand impact loads than aluminum alloys, and has better resistance to organic and alkali corrosion. Magnesium-aluminum alloys are the most widely used, followed by magnesium-manganese alloys and magnesium-zinc-zirconium alloys. In addition, magnesium-aluminum alloys are widely used, mainly in aviation, aerospace, transportation, chemical, rocket and other industrial sectors.