CrMoNbTiZr high-entropy alloy material and preparation method thereof

A high-entropy alloy and alloy technology, applied in CrMoNbTiZr high-entropy alloy and its preparation, high-entropy alloy and its preparation field, can solve the problems of high alloy mixing entropy, reduce the brittleness of multi-component alloys, etc., and achieve uniform alloy structure and excellent corrosion resistance Performance, the effect of high hardness

Inactive Publication Date: 2017-09-08
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mixing entropy of the alloy is extremely high. During the solidification process, the precipitation of brittle phases in traditional multi-component alloys is suppressed, such as intermetallic compounds; after solidification, a single solid solution with BCC or FCC structure is generally formed, which greatly reduces the brittleness of multi-component alloys

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  • CrMoNbTiZr high-entropy alloy material and preparation method thereof
  • CrMoNbTiZr 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. CrMoNbTiZr high entropy alloy composition design.

[0020] This embodiment is a CrMoNbTiZr high-entropy alloy composed of five elements: Cr, Mo, Nb, Ti and Zr, wherein the molar ratio of Cr:Mo:Nb:Ti:Zr is: 1:1:1:1 :1.

[0021] 2. Preparation of CrMoNbTiZr high entropy alloy.

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

[0023] 1) Raw material preparation: the alloy smelting raw materials used in the present invention are high-purity (purity above 99.5%) Cr, Mo, Nb, Ti and Zr elements, and all raw materials used are powder materials;

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

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Abstract

The invention relates to a CrMoNbTiZr high-entropy alloy material and a preparation method of the CrMoNbTiZr high-entropy alloy material. The high-entropy alloy material comprises Cr, Mo, Nb, Ti and Zr, wherein the molar ratio of Cr to Mo to Nb to Ti to Zr is 1:1:1:1:1. The preparation method comprises the steps that 1, powder is prepared, and particularly metal powder is prepared according to the equal molar ratio; 2, powder mixing is carried out, and particularly the prepared powder is mixed to be uniform in a V-shaped powder mixing machine; 3, pressing and block forming are carried out, and particularly the mixed powder is subjected to cold pressing under a pressing machine to form blocks; and alloy is molten, and particularly a vacuum non-consumable arc melting furnace is used for melting the samples which are obtained after the powder is pressed to be blocks. The CrMoNbTiZr high-entropy alloy material mainly comprises a BCC solid solution phase and a small amount of Laves phase, meanwhile has the advantages of being high in hardness, high in corrosion resistance and the like, and has the good application prospect in the field of wear resistance and corrosion resistance.

Description

technical field [0001] The invention relates to a high-entropy alloy and a preparation method thereof, in particular to a wear-resistant and corrosion-resistant CrMoNbTiZr high-entropy alloy and a preparation method thereof, belonging to the technical field of alloy materials and preparation thereof. Background technique [0002] The traditional understanding of alloy performance is that alloy performance can be improved and improved by adding trace alloy elements, such as increasing strength, hardness, compressive strength, corrosion resistance, thermal stability, etc., but this method is not without disadvantages , if added too much, it will lead to a large number of brittle intermetallic compounds or even brittle complex phases, which will reduce the mechanical properties of the alloy. In addition, too many compounds will have an adverse effect on the study of the alloy structure. Therefore, for a long time, in the process of developing new alloys and improving alloys, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02
CPCC22C1/02C22C30/00
Inventor 肖逸锋匡雯慧龚伟伟龚文娟吴靓许艳飞钱锦文
Owner XIANGTAN UNIV
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