Preparation method of magnesium-lithium-aluminum-silicon alloy plate

Abstract

The invention relates to a preparation method of a magnesium-lithium-aluminum-silicon alloy plate. Aiming at the conditions of low strength and bad corrosion resistance and thermal stability of a magnesium-lithium alloy, the magnesium-lithium alloy is doped with aluminum and silicon, and then the magnesium-lithium-aluminum-silicon alloy plate is prepared through preparation of an aluminum-silicon eutectic alloy, smelting in a vacuum induction furnace, suction casting of a copper mould and rolling formation. The preparation method is advanced in process and exact in data; the product has good purity, high quality and good corrosion resistance and thermal stability, and the tensile strength reaches 389MPa; the method can be applied to multiple technical fields and is a very ideal preparation method of a magnesium-lithium-aluminum-silicon alloy plate.

Description

technical field [0001] The invention relates to a preparation method of a magnesium-lithium-aluminum-silicon alloy plate, which belongs to the technical field of nonferrous metal reinforced preparation and application. Background technique [0002] Magnesium-lithium alloy is the lightest non-ferrous metal structural material, with high specific stiffness, specific strength, excellent magnetic shielding, shockproof and cutting performance, and has been applied in the fields of electronics, aerospace and military industry; The alloy has low strength, poor corrosion resistance and thermal stability, and cannot be used alone, which greatly restricts the scope of use of magnesium-lithium alloys. [0003] In order to improve the strength, corrosion resistance and thermal stability of magnesium-lithium alloys, aluminum-zinc or rare earth substances are often doped in magnesium-lithium alloys for alloying, but the mixed doping of aluminum and zinc will deteriorate the plasticity of ...

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Problems solved by technology

[0002] Magnesium-lithium alloy is the lightest non-ferrous metal structural material, with high specific stiffness, specific strength, excellent magnetic shielding, shockproof and cutting performance, and has been applied in the fields of electronics, aerospace and military industry; The alloy has low strength, poor corrosion resistance and thermal stability, and cannot be used alone, which greatly restricts the scope of use of magnesium-lithium alloys

[0003] In order to improve the strength, corrosion resistance and thermal stability of magnesium-lithium alloys, aluminum-zinc or rare earth substances are often doped in magnesium-lithium alloys for alloying, but the mixed doping of aluminum and zinc will deteriorate the plasticity of magnesium-lithium alloys, limiting Magnesium-lithium alloys are used to achieve higher strength; if magnesium-lithium alloys are doped with rare earth elements, the process is more complicated, the cost is high, and the price is relatively expensive, so it cannot be mass-produced

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