Method for preparing aluminum-based medium-entropy alloy through electromagnetic stirring casting

Abstract

The invention discloses a method for preparing an aluminum-based medium-entropy alloy through electromagnetic stirring casting, and relates to the technical field of high-performance metal material manufacturing. The method comprises the steps of alloy preparation, mold drying, charging, furnace burden melting, molten aluminum refining, casting and demolding. According to the method, aluminum alloy melt in a casting mold is stirred through an electromagnetic field, the electromagnetic field belongs to a non-contact external energy field, primary dendrites can be effectively smashed, as-cast structures are remarkably refined, and the segregation tendency of alloy elements in the solidification process is improved. The electromagnetic stirring casting of the aluminum-based medium-entropy alloy is implemented through traditional liquid solidification forming, the preparation process is simple in flow, a large-specification high-quality casting blank can be prepared, and good application prospects are achieved. The prepared alloy material is fine in grain and uniform in structure, has potential good plastic processing performance, can be used for preparing a high-strength light aluminum alloy material by combining corresponding deformation and heat treatment processes, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of manufacturing high-performance metal materials, and in particular relates to a method for preparing aluminum-based medium-entropy alloys by electromagnetic stirring casting. Background technique [0002] Aluminum-based medium-entropy alloys have been developed rapidly in recent years due to their low density, high mechanical strength, and good corrosion resistance. They have great application prospects in aerospace, rail transportation, waterway transportation and other fields. At present, the methods for preparing aluminum-based medium-entropy alloys mainly include mechanical alloying (MA), arc melting method (VAM), laser cladding, etc. The main problems faced by these methods are high cost and limited sample size. It is difficult to realize the large-scale application of high-entropy alloy materials. Another preparation technology based on traditional casting forming is one of the effective ways to promote the d...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing aluminum-based medium-entropy alloys by electromagnetic stirring casting, to solve the existing problems: the method for preparing aluminum-based medium-entropy alloys mainly includes mechanical alloying (MA), arc melting (VAM) ), laser cladding, etc. The main problems faced by these methods are the high cost and the limited size of the prepared samples, which makes it difficult to realize the large-scale application of such materials