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A wear-resistant, corrosion-resistant high-entropy alloy material and preparation method thereof

A high-entropy alloy and corrosion-resistant technology, applied in the field of MoNbTaTiVZr high-entropy alloy and its preparation, can solve the problems of limiting alloy types, increasing alloy brittleness, and difficulty in alloy composition and type analysis.

Active Publication Date: 2020-07-07
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The development experience of traditional alloys tells us that adding more types of alloying elements will cause many compounds in the alloy, especially brittle intermetallic compounds, which will increase the brittleness of the alloy. In addition, it will also make it difficult to analyze the composition and type of the alloy, so it is generally considered The fewer types of alloying elements added, the better, but this limits the space for the development of alloy types to diversify

Method used

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  • A wear-resistant, corrosion-resistant high-entropy alloy material and preparation method thereof
  • A wear-resistant, corrosion-resistant high-entropy alloy material and preparation method thereof
  • A wear-resistant, corrosion-resistant high-entropy alloy material and preparation method thereof

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Embodiment Construction

[0018] The preparation method and process performance of the present invention are illustrated by specific specific examples below, and those skilled in the art can fully understand the advantages and functions of the present invention from the contents disclosed in this specification.

[0019] 1. MoNbTaTiVZr high entropy alloy composition design

[0020] This embodiment is a MoNbTaTiVZr high-entropy alloy composed of six elements: Mo, Nb, Ta, Ti, V and Zr, wherein the molar ratio of Mo:Nb:Ta:Ti:V:Zr is 1:1: 1:1:1:1.

[0021] 2. Preparation of MoNbTaTiVZr high-entropy alloy

[0022] The preparation of high-entropy alloys is a key step, and the preparation process is as follows:

[0023] 1) raw material preparation: the alloy smelting raw material that the present invention adopts is high-purity (purity is more than 99.5%) Mo, Nb, Ta, Ti, V and Zr element, used raw material is all metal powder;

[0024] 2) Weighing and mixing powder: Carry out accurate weighing and mixing ra...

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Abstract

The invention relates to a wear-resistant, corrosion-resistant and high-entropy alloy material and a preparation technology thereof. The high-entropy alloy material comprises the composition of MoNbTaTiVZr with the equal molar ratio of 1:1:1:1:1:1. The preparation technology comprises the following preparation processes: (1) preparing metal powders according to the equal molar ratio; (2) mixing the prepared powders evenly on a V-shaped powder mixer; (3) carrying out cold press molding of the powder after mixing under a press machine; and (4) melting the sample pressed into blocks by a non-self-consumable vacuum electric arc melting furnace. The prepared MoNbTaTiVZr high-entropy alloy has a main composition phase of a BCC solid solution phase and a small number of HCP phase. The alloy has the advantages of high hardness, strong corrosion resistance and the like; and the alloy has a good application prospect in the abrasion resistance and corrosion resistance fields.

Description

technical field [0001] The invention belongs to the technical field of alloy materials and their preparation, and specifically provides a wear-resistant and corrosion-resistant MoNbTaTiVZr high-entropy alloy and a preparation method thereof. The alloy has good application prospects in the wear-resistant and corrosion-resistant fields. Background technique [0002] The traditional alloy design concept generally takes a metal element as the basic element (the content generally exceeds 50%), and obtains or improves certain properties of the metal by adding various elements. The development experience of traditional alloys tells us that adding more types of alloying elements will cause many compounds in the alloy, especially brittle intermetallic compounds, which will increase the brittleness of the alloy. In addition, it will also make it difficult to analyze the composition and type of the alloy, so it is generally considered The fewer types of alloying elements added, the bet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02
CPCC22C1/02C22C30/00
Inventor 许艳飞欧阳豪肖逸锋吴靓钱锦文欧艳张乾坤李世哲邓季龙欧耀辉周水波唐少让
Owner XIANGTAN UNIV
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