A kind of preparation method of high performance aluminum matrix composite material component

Abstract

The invention relates to a method for preparing a high-performance aluminum-matrix composite material component, which aims at the existing graphene-reinforced aluminum-matrix composite material preparation methods that graphene is easy to agglomerate in the aluminum matrix, and the aluminum matrix and graphene are prone to adverse interface reactions and other issues, using carboxylated graphene as the reinforcement of the aluminum matrix composite material, after the surface treatment of the aluminum alloy plate, the surface of the aluminum alloy plate after surface treatment is sprayed with carboxylated graphene, hot-pressed and sintered, rolled, and chopped into aluminum alloys Particles and semi-solid direct extrusion casting are used to prepare high-performance aluminum matrix composite components. This preparation method has advanced technology, accurate and detailed data, and the prepared aluminum matrix composite material has good internal structure, no shrinkage cavity, shrinkage porosity defects, fine grains, nearly spherical shape, and carboxylated graphene is uniformly dispersed in the matrix. The interface is well bonded, the tensile strength of the component reaches 385Mpa, the elongation rate reaches 6.4%, and the hardness reaches 113HV. It is an advanced preparation method for high-performance aluminum matrix composite components.

Description

technical field [0001] The invention relates to a method for preparing a high-performance aluminum-based composite material component, and belongs to the technical field of non-ferrous metal composite material component preparation. Background technique [0002] As a lightweight structural material, aluminum alloy meets the development requirements of lightweight products, and has been widely used in aerospace, electronic products, automobile industry and other fields. However, due to the low comprehensive performance of traditional aluminum alloy materials, its use in high-end products is restricted. Aluminum matrix composites can effectively overcome the shortcomings of traditional aluminum alloys such as low hardness, low modulus, low strength, and poor wear resistance, and are expected to be popularized and applied in the preparation of high-performance components. [0003] Traditional aluminum matrix composite reinforcements include particles, fibers, and whiskers, whi...

AI Technical Summary

Problems solved by technology

Therefore, graphene is prone to agglomeration in the aluminum matrix, and in addition, the process cannot produce components with complex shapes

The casting stirring method and the pressure infiltration method can form complex components, but in the high temperature liquid melt, the aluminum matrix and graphene are prone to adverse interfacial reactions, forming Al 4 C 3 Brittle phase; and due to the poor wettability of graphene and aluminum substrate, graphene agglomeration is prone to occur, which has an adverse effect on the improvement of material performance

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