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

Abstract

The invention provides an aluminum-based high-toughness composite material and a preparation method thereof. The aluminum-based high-toughness composite material comprises a composite base material, ceramic fibers and carbon silicon fibers inlaid in the surface of the composite base material, and an anti-oxidation high-entropy alloy layer sprayed on the surfaces of braided carbon fibers. Accordingto the aluminum-based high-toughness composite material and the preparation method thereof, the aluminum-based composite alloy is used as a substrate, the ceramic fibers and the carbon silicon fibersare wrapped inside the aluminum-based composite alloy, moreover, the high-temperature-resistance anti-oxidation high-entropy alloy layer is sprayed on the surface of the composite material to form athree-layer-structure aluminum-based composite material, the strength and the toughness of the aluminum-based composite material are remarkably improved by wrapping the ceramic fibers and the carbon silicon fibers inside the aluminum-based alloy, then the oxidation resistance and the high-temperature resistance of the whole aluminum-based composite material are further improved by spraying the anti-oxidation high-entropy alloy layer on the outer surface of the composite material, moreover, the structural integrity of the interior ceramic fibers and the interior carbon silicon fibers is also protected, and the defects of low tensile strength and low compressive strength of general aluminum-based alloy are overcome.

Description

technical field [0001] The invention relates to the technical field of aluminum-based composite materials, in particular to an aluminum-based high-toughness 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 inst...

AI Technical Summary

Problems solved by technology

Therefore, the general high-temperature mechanical properties of aluminum-based amorphous alloys are unstable, and the strength is relatively low; and the toughness of aluminum alloys in the amorphous state also has major problems.