Preparation method of high-entropy alloy particle reinforced magnesium-based composite material

Abstract

The invention discloses a preparation method of a high-entropy alloy particle reinforced magnesium-based composite material, and belongs to the manufacturing technology of metal-based composite materials. According to the method, the high-entropy alloy particle reinforced magnesium-based composite material with the tensile strength of 220MPa and the Vickers hardness of 89HV is obtained through pre-dispersing mixture preparation, magnesium alloy melt preparation, ultrasonic treatment, mechanical vibration treatment and pouring cooling processing treatment of the high-entropy alloy particles in magnesium alloy scraps, the high-entropy alloy particles in the composite material structure are uniformly dispersed, the utilization rate of the recovered magnesium alloy scraps is high, and the high-entropy alloy and the magnesium alloy have good interface bonding compatibility, hardness, tensile strength and plasticity are greatly improved, and the method is scientific, reasonable, simple and convenient to use.

Description

technical field [0001] The invention belongs to the manufacturing technology of metal-based composite materials, and mainly relates to a preparation method of high-entropy alloy particle-reinforced magnesium-based composite materials. Background technique [0002] Magnesium alloy has the advantages of low density, high specific strength, low thermal expansion coefficient and excellent shock absorption, and has broad application prospects in aerospace, automotive industry, electronic products and other fields. However, the low mechanical properties of magnesium alloy at room temperature limit its application in engineering. At present, the reinforcing phase of magnesium-based composites is mostly ceramic particles, such as SiC, B 4 C, AlN and Al 2 o 3 etc. There are problems such as poor wettability, poor interfacial bonding, and uneven particle distribution between these ceramic particle reinforcements and the magnesium matrix, resulting in poor plasticity and toughness o...

AI Technical Summary

Problems solved by technology

Studies have shown that if high-entropy alloys are used as reinforcing phases to strengthen and toughen magnesium alloys, problems such as poor interface wettability and poor interface bonding between ceramic particle reinforcements and magnesium substrates can be solved.

However, there are few reports in the literature on the preparation of magnesium-based composites using high-entropy alloy particle-reinforced phases.

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