High-entropy reinforced amorphous alloy composite material and preparation method thereof

Abstract

The invention belongs to the technical field of composite materials and preparation thereof, and relates to a high-entropy reinforced amorphous alloy composite material and a preparation method thereof. The composite material is composed of a Cr-Fe-Ni-Ta-Mo-V high-entropy alloy phase reinforced Co-Fe-Ta-La-B amorphous alloy matrix, the volume of the high-entropy phase accounts for 0.1%-1% of the total volume of the composite material, and the size of the high-entropy alloy reinforced phase ranges from 30 micrometers to 80 [mu]m; the amorphous alloy matrix comprises the following components in percentage by atom: 15%-25% of Fe, 2%-10% of Ta, 11%-17% of La, 15%-25% of B and the balance of Co; the high-entropy alloy reinforcement phase comprises the following components in percentage by atom: 15%-25% of Fe, 10%-20% of Ni, 15%-25% of Ta, 7%-16% of Mo, 10%-20% of V and the balance of Cr; a laser additive manufacturing technology is adopted for preparation, the block high-entropy reinforced amorphous alloy composite material is finally obtained, and the plasticity and toughness of the composite material can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of composite materials and their preparation, and relates to a high-entropy reinforced amorphous alloy composite material and a preparation method thereof. Background technique [0002] Compared with traditional bulk crystalline materials, bulk amorphous alloys have high fracture strength and yield strength, high hardness, high specific strength and high elastic limit, and can be used as high-performance structural materials. But the fly in the ointment is that the macroscopic plasticity of amorphous alloys, especially the poor tensile plasticity, has always been the bottleneck of its application as an excellent structural material. People have improved the plasticity of amorphous alloys by developing new amorphous alloy components with high plastic deformation ability, adding a second phase to the amorphous alloy matrix, and surface treatment. For example, finding an amorphous alloy composition with a high...

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Problems solved by technology

At the same time, the amorphous forming ability of the alloy is also closely related to the composition of the alloy. At present, it is difficult to find alloys with high amorphous forming ability and high plastic deformation ability.

Therefore, the problem of plasticity of amorphous alloys cannot be completely solved by developing alloys with large Poisson's ratios

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