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Eutectic high-entropy alloy and preparation method thereof

A high-entropy alloy and alloy technology, applied in the field of metal materials, can solve the problems of difficulty in obtaining large-size alloy ingots with uniform composition, restrictions on the industrial application and development of alloys, and the lack of castability of single-phase HEA, achieving a strong combination , good thermal stability and excellent mechanical properties

Active Publication Date: 2022-03-29
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

More importantly, most single-phase HEAs do not have good castability and exhibit chemical inhomogeneity, and it is difficult to obtain large-size alloy ingots with uniform composition by smelting
Therefore, these problems greatly limit the industrial application and development of the alloy

Method used

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  • Eutectic high-entropy alloy and preparation method thereof
  • Eutectic high-entropy alloy and preparation method thereof
  • Eutectic high-entropy alloy and preparation method thereof

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Embodiment Construction

[0029] The present invention is described in further detail now in conjunction with accompanying drawing.

[0030] an AlCrFe 2 Ni 2 (MoNb) x Eutectic high-entropy alloy, the mole percentage of each element is Al:Cr:Fe:Ni:Mo:Nb=1:1:2:2:x:x, x=0,0.1,0.3,0.5,0.7).

[0031] Its preparation method includes:

[0032] Step 1. Preparation of raw materials: According to the composition ratio of the eutectic high-entropy alloy, metal Al, metal Cr, metal Fe, metal Ni, metal Mo and metal Nb are weighed as raw materials, and the molar percentage of each element is converted to Al:Cr: Fe: Ni: Mo: Nb=1: 1: 2: 2: x: x, x=0, 0.1, 0.3, 0.5, 0.7, respectively make 5 samples whose quality is 30g, so that the present invention adopts The raw materials are high-purity metal Al, metal Cr, metal Fe, metal Ni, metal Mo and metal Nb, the purity of which is greater than 99.9%. The oxide skin on the surface of the raw material is removed, and the industrial ethanol is used for ultrasonic cleaning and...

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Abstract

The invention relates to a eutectic high-entropy alloy and a preparation method thereof, the eutectic high-entropy alloy is a novel alloy system AlCrFe2Ni2 (MoNb) x with eutectic high-entropy alloy AlCrFe2Ni2 as a matrix and Mo element and Nb element as reinforcing phases, and the molar percentage of Al: Cr: Fe: Ni: Mo: Nb of the AlCrFe2Ni2 (MoNb) x eutectic high-entropy alloy is 1: 1: 2: 2: x: x. According to the eutectic high-entropy alloy material prepared according to the proportion and the method, the metal with good thermal stability and high hardness serves as a reinforcing phase, the AlCrFe2Ni2 eutectic high-entropy alloy with the excellent mechanical property serves as a matrix, compared with the prior art, the preparation method has the advantages of being simple in preparation process, wide in application range and excellent in mechanical property, and therefore the eutectic high-entropy alloy material has the good application prospect. According to the eutectic high-entropy alloy obtained through the preparation method, the performance advantages of a matrix and a reinforced phase are fully exerted, and strong combination of the performance is achieved.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to an AlCrFe 2 Ni 2 (MoNb) x Eutectic high-entropy alloys and methods for their preparation. Background technique [0002] Traditional alloys consist of only one main element and other minor metal or non-metal elements, which are generally used to improve properties, such as copper, iron, aluminum, etc. In order to break the traditional design strategy of alloys, several years ago, Ye Junwei and Cantor proposed a new generation of alloys, namely high-entropy alloys (HEA), which attracted extensive research attention. HEA was originally defined as composed of at least five main elements with equal or nearly equal atomic ratios, and exhibits special properties such as excellent strength, hardness, and excellent corrosion and wear resistance. These properties are closely related to the high entropy effect, lattice distortion effect, slow diffusion effect and cocktail effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02
CPCC22C30/00C22C1/02
Inventor 李肖逸高绪杰郭娜娜殷凤仕朱光明
Owner SHANDONG UNIV OF TECH
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