Safe nuclear reactor shell high-entropy alloy material and preparation method thereof

A nuclear reactor and high-entropy alloy technology, applied in the field of high-entropy alloys, can solve the problems of poor radiation resistance and low safety factor

Active Publication Date: 2019-06-25
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor radiation resistance and low safety factor of traditional cladding materials, the present invention provides a safe nuclear reactor cladding high-entropy alloy material with good radiation resistance and high safety factor that is applied in a high-temperature environment. The material is composed of five elements AlCrFeMoNb, among

Method used

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  • Safe nuclear reactor shell high-entropy alloy material and preparation method thereof
  • Safe nuclear reactor shell high-entropy alloy material and preparation method thereof
  • Safe nuclear reactor shell high-entropy alloy material and preparation method thereof

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Effect test

Embodiment 1

[0019] Embodiment 1: The composition and atomic percentage of the cladding high-entropy alloy material of the safety nuclear reactor are Al 6.3%, Cr11.6%, Fe29.5%, Mo25.3%, Nb27.4%;

[0020] The preparation method of the above-mentioned safe nuclear reactor cladding high-entropy alloy material is as follows

[0021] 1. Use a small grinder to remove oxide scales on the surface of Al, Cr, Fe, Mo, Nb and other metal materials, and then use an ultrasonic cleaner to clean the polished materials. The purity of the five metals is greater than 99.9wt%;

[0022] 2. Put the weighed metal materials into the vacuum arc melting furnace in the order of the melting point of the metal materials from low to high, that is, the metal material with the lowest melting point is placed at the bottom;

[0023] 3. Close the furnace door, and pump the vacuum arc melting furnace to a vacuum state to 6×10 -2 Pa below, and pass through the argon gas of mass concentration 99.99% to carry out protection, a...

Embodiment 2

[0026] Embodiment 2: The composition and atomic percentage of the cladding high-entropy alloy material of the safety nuclear reactor are Al 5.9%, Cr11%, Fe27.7%, Mo29.7%, Nb25.7%;

[0027] The preparation method of the above-mentioned safe nuclear reactor cladding high-entropy alloy material is as follows

[0028] 1. Use a small grinder to remove the scale on the surface of Al, Cr, Fe, Mo, Nb metal materials, and then use an ultrasonic cleaner to clean the polished materials. The purity of the five metals is greater than 99.9wt%;

[0029] 2. Put the weighed metal materials into the vacuum arc melting furnace in the order of the melting point of the metal materials from low to high, that is, the metal material with the lowest melting point is placed at the bottom;

[0030] 3. Close the furnace door, and pump the vacuum arc melting furnace to a vacuum state to 6×10 -2 Pa below, and pass through the argon gas of mass concentration 99.99% to carry out protection, argon pressure i...

Embodiment 3

[0033] Embodiment 3: The composition and atomic percentage of the cladding high-entropy alloy material of this safety nuclear reactor are Al 5.4%, Cr10.5%, Fe26.7%, Mo32.4%, Nb25%;

[0034] The preparation method of the above-mentioned safe nuclear reactor cladding high-entropy alloy material is as follows

[0035] 1. Use a small grinder to remove the scale on the surface of Al, Cr, Fe, Mo, Nb metal materials, and then use an ultrasonic cleaner to clean the polished materials. The purity of the five metals is greater than 99.9wt%;

[0036] 2. Put the weighed metal materials into the vacuum arc melting furnace in the order of the melting point of the metal materials from low to high, that is, the metal material with the lowest melting point is placed at the bottom;

[0037] 3. Close the furnace door, and pump the vacuum arc melting furnace to a vacuum state to 6×10 -2 Pa below, and pass through the argon gas of mass concentration 99.99% to carry out protection, argon pressure ...

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Abstract

The invention discloses a safe nuclear reactor shell high-entropy alloy material and a preparation method thereof. The high-entropy alloy material consists of five elements of Al, Cr, Fe, Mo and Nb, wherein the atomic percentage of the element aluminum is 4%-8%, the atomic percentage of the element chromium is 8%-13%, the atomic percentage of the element iron is 25%-30%, the atomic percentage of the element molybdenum is 20%-35%, and the atomic percentage of the element niobium is 25%-30%. According to the high-entropy alloy material and the preparation method thereof, a mother alloy button ingot is obtained in a vacuum arc smelting mode; the alloy has a relatively high melting point, and can be used in a high-temperature environment; and due to the fact that no zirconium element is used in the experiment, explosive hydrogen cannot be generated under the extreme high-temperature condition, so that the use safety is greatly improved.

Description

technical field [0001] The invention relates to an AlCrFeMoNb series high-entropy alloy material and a preparation method thereof, relates to a safe nuclear reactor cladding high-entropy alloy material and a preparation method thereof, and belongs to the field of high-entropy alloys. Background technique [0002] The concept of high-entropy alloys originated in 2004, and was proposed by Professor Ye Junwei, a Taiwanese scholar; multi-principal element high-entropy alloys broke the traditional alloy with one element as the main element and other elements as auxiliary additions, and at least three elements were used at the same time , and the content of each element is between 5% and 35%; a single-phase or multi-phase structure with uniform composition is obtained. [0003] High-entropy alloys have a variety of principal elements, so they have high-entropy effects, lattice distortion effects, hysteretic diffusion effects, and cocktail effects that are different from ordinary a...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/02G21C13/087
CPCY02E30/30
Inventor 谭军黄瑞董权王蝶邓攀李敏
Owner KUNMING UNIV OF SCI & TECH
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