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Mo-Nb-Ta-Zr-Hf high-entropy alloy and preparation method thereof

A high-entropy alloy and alloy technology, applied in the field of MoNbTaZrHf high-entropy alloy and its preparation, can solve the problems of emphasis, lack of high hardness, corrosion resistance, high temperature resistant alloy material, single performance, etc., and achieve broad application prospects, excellent Corrosion resistance, effect of improving corrosion resistance

Pending Publication Date: 2018-06-08
XIANGTAN UNIV
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Problems solved by technology

Moreover, most of the existing high-entropy alloy materials focus on a single performance (such as high hardness, corrosion resistance, high temperature resistance, etc.), and lack of well-matched alloy materials with high hardness, corrosion resistance, high temperature resistance, etc.

Method used

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  • Mo-Nb-Ta-Zr-Hf high-entropy alloy and preparation method thereof

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific examples, so that those skilled in the art can better understand the present invention and implement it, but the given examples are not intended to limit the present invention.

[0021] One, a kind of MoNbTaZrHf high-entropy alloy, the component of this high-entropy alloy is Mo a Nb b Ta c Zr d f e , wherein, the molar ratio of each element a:b:c:d:e=1:1:1:1:1; the mass fraction percentage content of materials such as Mo, Nb, Ta, Zr, Hf, Ti that adopts The purity is above 99.7%.

[0022] Two, a kind of preparation method of MoNbTaZrHf high-entropy alloy comprises the following steps:

[0023] (1) Ultrasonic treatment: After adding acetone to submerge the material in the container, ultrasonically clean it for 15-20 minutes to remove oil and impurities attached to the metal surface; then Mo, Nb, Ta, Zr, Hf, and Ti materials after removing impurities are separated Put it in a container...

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Abstract

The invention relates to a wear-resisting Mo-Nb-Ta-Zr-Hf high-entropy alloy and a preparation method thereof. The high-entropy alloy comprises the compositions of Mo a, Nb b, Ta c, Zr d and Hf e, andthe molar ratio a:b:c:d:e of all elements is 1:1:1:1:1 or all the elements have the equal molar ratio. According to the wear-resisting Mo-Nb-Ta-Zr-Hf high-entropy alloy and the preparation method thereof, a high-entropy alloy material with the high hardness and good corrosion resistance is prepared through a nonconsumable vacuum arc melting technology, the shortage of a traditional alloy is made up, and the application requirement of future high-hardness corrosion-resistant high-temperature-resistant materials is met.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a MoNbTaZrHf high-entropy alloy and a preparation method thereof. Background technique [0002] High Entropy Alloy (High Entropy Alloy) is a new alloy design concept proposed in the 1990s, also known as high-disorder alloy, which is an alloy breakthrough characterized by equimolar ratio or nearly equimolar ratio of multiple metal elements. The development framework of traditional alloys based on one or two metal elements is established, and four high-entropy alloy effects are summarized in terms of kinetics, thermodynamics, organization and structure, namely hysteretic diffusion effect, high-entropy effect, and lattice distortion effect. and the cocktail effect. Due to the high entropy effect in thermodynamics, the lattice distortion effect in structure, the hysteresis diffusion effect in kinetics, and the cocktail effect in performance, it is easy to obtain solid solution...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/02
CPCC22C1/02C22C30/00
Inventor 肖逸锋李世哲许艳飞吴靓钱锦文欧艳张乾坤欧阳豪夏秀艳欧耀辉周水波唐少让
Owner XIANGTAN UNIV
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