Aluminum-based high-strength composite material and preparation method thereof

Abstract

The invention provides an aluminum-based high-strength composite material and a preparation method of the aluminum-based high-strength composite material. The aluminum-based high-strength composite material comprises a composite base material, woven carbon fiber and an anti-oxidation high-entropy alloy layer, wherein the woven carbon fiber is wrapped on the surface of the composite base material,and the anti-oxidation high-entropy alloy layer is sprayed on the surface of the woven carbon fiber. An aluminum-based composite alloy is used as a substrate; the woven carbon fiber is wrapped on theouter surface of the aluminum-based composite alloy; and the surface of the woven carbon fiber is coated with the high-temperature-resistant and anti-oxidation high-entropy alloy layer in a spraying mode to form an aluminum-based composite material with a three-layer structure. The strength of the aluminum-based composite material is remarkably improved by wrapping the woven carbon fiber on the outer surface of the aluminum-based alloy. The anti-oxidation high-entropy alloy layer is coated on the outer surface of the carbon fiber, so that the oxidation resistance and high temperature resistance of the whole aluminum-based composite material are further improved, and the structural integrity of the inner woven carbon fiber can be protected as well. The defects of low tensile strength and low pressure resistance of general aluminum-based alloys are overcome. The residual stress of the aluminum-based alloy is reduced. The mechanical property is excellent at high temperature.

Description

technical field [0001] The invention relates to the technical field of aluminum-based composite materials, in particular to an aluminum-based high-strength composite material and a preparation method thereof. Background technique [0002] The contradiction between the rapid development of the automobile industry and the gradual reduction of non-renewable petroleum resources has become increasingly prominent, and it is becoming more and more important to reduce the weight of the automobile itself. Another way is to further improve the fuel efficiency of the engine. As we all know, increasing the heat-resistant temperature of the engine can improve fuel efficiency, so ferrous metals such as cast iron are often used as alloy materials for the engine in automobile engines, but the density of ferrous metals is high, which is not conducive to reducing the weight of the vehicle body Therefore, in recent years, more and more automobile manufacturers have adopted aluminum alloy inste...

AI Technical Summary

Problems solved by technology

Therefore, the general high-temperature mechanical properties of aluminum-based amorphous alloys are unstable and their strength is relatively low.