Preparation method of high-performance alkene-magnesium alloy

Abstract

The invention belongs to the technical field of alloy materials, and particularly relates to a preparation method of high-performance alkene-magnesium alloy. The preparation method comprises the following steps: (1) adding modified graphene powder in a solution of an organic silicon surfactant, soaking, drying, and obtaining mixed graphene powder; (2) smelting the magnesium powder and alloy element powder under inertial gas to obtain metal liquid; (3) adding the mixed graphene powder into the metal liquid, ultrasonically treating and stirring, obtaining molten alloy, removing the slag, pouring, and obtaining an alloy ingot; and (4) performing the heat treatment for the alloy ingot, and obtaining the alkene-magnesium alloy. The modified graphene powder is prepared by utilizing zirconium, hydrofluoric acid and nitrogen to modify the graphene. By adopting the preparation method of the high-performance alkene-magnesium alloy provided in the invention, the problem that the graphene is low in dispersity and easy to agglomerate can be solved, the close combination of the graphene and other elements can be realized, and the prepared alkene-magnesium alloy is high in homogeneity and excellent in performances.

Description

technical field [0001] The invention belongs to the technical field of alloy material preparation, in particular to a method for preparing a high-performance ene-magnesium alloy. Background technique [0002] Magnesium alloy is an alloy composed of magnesium as a matrix and other elements. It is the lightest metal engineering structural material in practical applications. It has low density, high specific strength, high specific rigidity, strong electromagnetic shielding ability, and good vibration damping performance. , non-polluting and other advantages, it is a kind of green engineering material, so it has gradually attracted people's attention. In recent years, due to the significant role of magnesium alloys in reducing weight, reducing energy consumption, and reducing environmental pollution, it has been increasingly used in automotive, national defense, aerospace, electronics, machinery and other industrial fields, as well as household goods and sports equipment. It i...

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Problems solved by technology

In recent years, due to the significant role of magnesium alloys in reducing weight, reducing energy consumption, and reducing environmental pollution, it has been increasingly used in automotive, national defense, aerospace, electronics, machinery and other industrial fields, as well as household goods and sports equipment. It is widely used and the market prospect is very promising; however, there are still significant shortcomings in the magnesium alloys currently on the market: 1. The absolute strength is still low, especially the high-temperature mechanical properties are poor, and the strength and creep resistance are large at high temperatures. 2. Low plasticity at room temperature, poor deformation processing ability; 3. High chemical activity, easy to oxidize and burn, making it difficult to process and smelt; 4. Poor corrosion resistance

For example, the patent application number is CN201610850376.0, which discloses a high-performance ene-magnesium alloy material and its preparation method. In terms of mass percentage, 5-8% graphene-like substances, 1-2% Co, 1-2% Y, 4-7% Al, 1-3% Mn, 0.2-0.8% Li, 0.2-1.0% Zr, 0.1-0.5% Ca, 0.1-0.5% Zn, 0.2-1.0% Cd, 0.3-0.7% Yb , Ni 0.3-0.7%, Sb 0.1-1%, Mo 0.1-1%, and the balance is Mg as raw materials, by preheating pure magnesium metal, melting with other raw materials containing metal elements under the protection of inert gas, after melting Heat preservation; heat up after heat preservation, add graphene-like material raw materials, stir evenly and let stand, filter to obtain crude magnesium alloy liquid, and then refine, surface treatment, cold press, sintering and molding to obtain graphene magnesium alloy material, its heat resistance , strength, hardness and other properties are superior to traditional magnesium alloy materials; however, graphene has the characteristics of strong thermal stability, low density, low dispersion, and easy to agglomerate, and the content of graphene-like substances in alloy materials is low. Moreover, most of the excellent properties of graphene are not fully utilized due to the phenomenon of agglomeration.

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