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High-entropy amorphous alloy material and preparation method thereof

An amorphous alloy and high-entropy technology, applied in the field of high-entropy amorphous alloy materials and their preparation, can solve problems such as difficulties and achieve the effects of high wear resistance, corrosion resistance, and high thermal resistance

Active Publication Date: 2013-10-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It should be pointed out that this work is very difficult due to the great differences in element selection, component design methods, and organizational structure characteristics between the two

Method used

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  • High-entropy amorphous alloy material and preparation method thereof
  • High-entropy amorphous alloy material and preparation method thereof
  • High-entropy amorphous alloy material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: prepare Ti 20 Zr 20 Ni 20 Cu 20 be 20 High entropy bulk amorphous alloy

[0041] First, batching is carried out according to the chemical composition ratio, and then the master alloy ingot is made by repeated melting in a vacuum electric arc furnace. Under the condition of Ar gas protection after vacuum extraction, the master alloy is placed in the induction furnace of the rapid solidification device to be melted, and after melting, it is suction-cast into a copper mold with a cavity diameter of 3 mm, and cooled to obtain the Ti 20 Zr 20 Ni 20 Cu20 be 20 High-entropy bulk amorphous alloy rods, and their microstructure, thermal properties and mechanical properties were tested by XRD, DSC and compression experiments.

[0042] figure 1 (a) is Ti in embodiment 1 20 Zr 20 Ni 20 Cu 20 be 20 The high-entropy bulk amorphous alloy obtained the X-ray diffraction pattern of Φ3mm rod by copper mold casting method. In the pattern, there are only diffuse s...

Embodiment 2

[0043] Embodiment 2: prepare Ti 20 f 20 Ni 20 Cu 20 be 20 High entropy bulk amorphous alloy

[0044] First, batching is carried out according to the chemical composition ratio, and then the master alloy ingot is made by repeated melting in a vacuum electric arc furnace. Under the condition of Ar gas protection after vacuum extraction, the master alloy is placed in the induction furnace of the rapid solidification device to be melted, and after melting, it is suction-cast into a copper mold with a cavity diameter of 2 mm, and cooled to obtain the Ti 20 f 20 Ni 20 Cu 20 be 20 High-entropy bulk amorphous alloy rods, and their microstructure, thermal properties and mechanical properties were tested by XRD, DSC and compression experiments.

[0045] figure 1 (b) is that composition is Ti in embodiment 2 20 f 20 Ni 20 Cu 20 be 20 The high-entropy bulk amorphous alloy obtained the X-ray diffraction spectrum of the Φ2mm rod by copper mold casting method. In the spectrum,...

Embodiment 3

[0046] Embodiment 3: Preparation of Nb 16.7 Ni 16.7 Zr 16.7 Ti 16.7 Cu 16.7 be 16.7 High entropy bulk amorphous alloy

[0047] First, batching is carried out according to the chemical composition ratio, and then the master alloy ingot is made by repeated melting in a vacuum electric arc furnace. Under the condition of Ar gas protection after vacuum extraction, the master alloy is placed in the electric arc furnace of the rapid solidification device to melt it, and then sucked into copper molds with different cavity diameters, and cooled to obtain the Nb 16.7 Ni 16.7 Zr 16.7 Ti 16.7 Cu 16.7 be 16.7 High-entropy bulk alloy rods (the subscript 16.7 is an approximate value obtained from 100 / 6), and its structure, thermal properties and mechanical properties were tested by XRD, DSC and compression experiments.

[0048] figure 1 (c) is that composition is Nb in embodiment 3 16.7 Ni 16.7 Zr 16.7 Ti 16.7 Cu 16.7 be 16.7 The X-ray diffraction spectrum of the Φ1.5mm ro...

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Abstract

The invention discloses a high-entropy amorphous alloy material and a preparation method of the high-entropy amorphous alloy material, and belongs to the technical field of an amorphous alloy material and a preparation method of the amorphous alloy material. The high-entropy amorphous alloy material, which comprises a plurality of blocks and strips synthesized from 5 or more alloy elements, is prepared by melting using a vacuum arc furnace, wherein the atomic percents of all the components of the alloy or the atomic percents of most components of the alloy are equal. The mechanical performance data of a tested sample proves that the obtained high-entropy amorphous alloy material has excellent performances of high strength, high hardness, high wear resistance, high corrosion resistance and the like, which are beyond the reach of some traditional crystalline alloys.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloy materials and their preparation, in particular to high-entropy amorphous alloy materials and their preparation methods. Background technique [0002] Amorphous alloy is a high-tech new material with special structure and performance. Different from traditional crystalline materials, the atomic arrangement of amorphous alloys presents the characteristics of short-range order and long-range disorder in structure; in terms of performance, it is characterized by high strength, large elastic deformation and elastic energy storage, and good corrosion resistance. , so that the amorphous alloy has a variety of potential application prospects. And the preliminary research results show that: the amorphous alloy has good hydrogen permeability, which makes it possible to be used as a hydrogen permeable functional material. [0003] High-entropy alloys are also a very special class of alloys. It con...

Claims

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Application Information

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IPC IPC(8): C22C45/00C22C1/02B22D11/06
Inventor 姚可夫丁红瑜
Owner TSINGHUA UNIV
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