Squeeze casting method for mixed-particle-reinforced type aluminum matrix composite

Abstract

The invention relates to a squeeze casting method for a mixed-particle-reinforced type aluminum matrix composite. The squeeze casting method for the mixed-particle-reinforced type aluminum matrix composite aims at the problem that the tension strength and the hardness of an aluminum matrix composite are low. According to the squeeze casting method, an aluminum alloy serves as a matrix material, aluminum-copper-iron-beryllium quasicrystal and zirconium carbonate serve as reinforcing agents, an al-sc master alloy serves as a modificator, the aluminum alloy, aluminum-copper-iron-beryllium quasicrystal, the zirconium carbonate and the al-sc master alloy are subjected to melting in a vacuum melting furnace, mechanical stirring, argon bottom blowing protecting, squeezing and heat treatment, and then the mixed-particle-reinforced type aluminum matrix composite is prepared. According to the squeeze casting method, the technology is advanced, the processes are rigorous, and data are precise, full and accurate; the mechanical performance of the aluminum matrix composite is enhanced greatly, the tension strength reaches to 409 MPa, the hardness reaches to 150.2 HV, and the elongation reaches to 4.7%; and the squeeze casting method for the mixed-particle-reinforced type aluminum matrix composite is an advanced method.

Description

technical field [0001] The invention relates to a extrusion casting method of a mixed particle reinforced aluminum-based composite material, which belongs to the technical field of metal-based composite material preparation. Background technique [0002] Aluminum-silicon alloy has good casting performance, good corrosion resistance, and low expansion coefficient. It is an alloy with more varieties and wider uses in cast aluminum alloys. It has been widely used in aerospace, ships, automobiles and other fields. [0003] Particle-reinforced aluminum-matrix composites are an effective method to improve the performance of aluminum alloys. At present, ceramic-reinforced aluminum-matrix composites have attracted much attention. When ceramic particles are added to the aluminum matrix, there are particle agglomerations, non-wetting of particles and aluminum matrix, and particles and aluminum matrix. Phenomena such as thermal expansion mismatch of the matrix severely limit the applic...

AI Technical Summary

Problems solved by technology

[0003] Particle-reinforced aluminum-matrix composites are an effective method to improve the performance of aluminum alloys. At present, ceramic-reinforced aluminum-matrix composites have attracted much attention. When ceramic particles are added to the aluminum matrix, there are particle agglomerations, non-wetting of particles and aluminum matrix, and particles and aluminum matrix. Phenomena such as thermal expansion mismatch of the matrix severely limit the application of aluminum matrix composites

[0004] Quasicrystals have the properties of high hardness, wear resistance, corrosion resistance, oxidation resistance and low friction coefficient, and are often used as reinforcement phases of composite materials. However, with the development of science and technology, the performance of quasicrystal reinforced aluminum matrix composites can no longer Product needs, at present, mixed particles synergistically reinforced aluminum matrix composites are still in the research stage

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