Silicon carbide and silicon particle reinforced aluminum-copper based composite material and preparation method thereof

Abstract

The invention relates to a silicon carbide and silicon particle reinforced aluminum-copper based composite material and a preparation method thereof, and belongs to the field of the particle reinforced metal based composite material. The composite material is composed of the components by the weight percentage: 15-25 wt.% of silicon carbide, 45-50 wt.% of silicon and 25-40wt.% of an aluminum-copper alloy; the silicon carbide and silicon particles as a reinforcement phase are uniformly distributed in the aluminum-copper alloy matrix, and the aluminum-copper alloy matrix forms a three-dimensional reticular structure. A powder metallurgy method is used for preparation. The obtained aluminum based composite material has uniform structure, is fully dense, has the comprehensive performance of light weight, low expansion, high modulus, high strength, resistance to space radiation environment, easy processing and the like, is suitable for use in space environments, and can be used as related component materials in the aviation and aerospace fields.

Description

technical field

[0001] The invention relates to an aluminum-copper-based composite material reinforced by silicon carbide and silicon particles and a preparation method thereof. The composite material which uses silicon carbide and silicon particles as a reinforcing phase and an aluminum-copper alloy as a matrix has the advantages of light weight, low expansion, and high modulus. The characteristics of high volume and high strength are especially suitable for use in space environments, and belong to the field of particle-reinforced metal matrix composites. Background technique

[0002] With the continuous development of aerospace technology, the complex service environment in the aerospace field has put forward more and more stringent requirements on the comprehensive properties of materials such as density, thermal expansion coefficient, modulus, and strength. In recent years, metal matrix composites have relatively good application prospects in the fields of aviation, aero...