Graphene-reinforced aluminum-based composite material for high-speed rail train compartment body and preparation method of graphene-reinforced aluminum-based composite material

Abstract

The invention provides a graphene-reinforced aluminum-based composite material for a high-speed rail train compartment body and a preparation method of the graphene-reinforced aluminum-based compositematerial. The graphene-reinforced aluminum-based composite material takes an aluminum alloy as a base body, takes graphene, Si, Cu, Mn, Mg, Zn and Fe as reinforcing phases and is a strip coil material with the thickness being 0.3-2.0 mm. According to the preparation method, raw materials with the suitable proportions are placed in a vacuum hot pressing furnace, heat insulation and pressure maintaining are conducted, powder is prepared into blank materials at one step, the technological step is reduced, and the production period is shortened. According to the preparation method of the composite material, the technological flow pass is simple, technological parameters are stable, and the cost is saved; and the graphene-reinforced aluminum-based composite material is excellent in quality, and plates are high in tensile strength and high in elasticity modulus, have been successfully applied to outer panels and inner side equipment room cover plates of the high-speed rail train compartmentbody, and reach the target that the weight is reduced by 5.8%.

Description

technical field [0001] The invention belongs to the technical field of metal-matrix composite materials and preparation thereof, and in particular relates to a graphene-reinforced aluminum-matrix composite material for a high-speed train box body and a preparation method thereof. Background technique [0002] In recent years, high-speed rail transportation has been vigorously developed. Railway vehicles have high requirements for the mechanical properties, processability, corrosion resistance, fatigue resistance and welding performance of materials. Railway vehicles are lightweight, especially high-speed and double-decker passenger cars. Lightweight is the central topic of railway transportation modernization, and a large number of high-strength aluminum alloy materials is the most effective way to improve vehicle lightweight, standardized construction and maintenance, large-scale integral wall panels and the development of hollow complex thin-walled profiles also promote Th...

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Problems solved by technology

[0006] The present invention aims at the problem that the graphene-reinforced aluminum-based composite material used in the high-speed train box in the prior art cannot be industrialized, and proposes a graphene-reinforced aluminum-based composite material used in the high-speed train box and its preparation method. Composition, improve the performance of aluminum-based composite materials; the preparation method, the process flow is simple, the process parameters are stable, in the vacuum hot pressing furnace, heat preservation and pressure, the powder is made into a billet in one step, reducing the process steps and shortening the production process cycle

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