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A kind of nuclear entropy alloy system and its preparation method and application

A technology of entropy alloys and systems, applied in the field of high/medium entropy alloy materials and their preparation, can solve problems such as poor toughness, improve high temperature resistance and corrosion resistance, simple preparation method, excellent high temperature stability and acid corrosion resistance Effect

Active Publication Date: 2022-04-26
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some high / medium entropy alloy material systems have been reported and studied in existing articles and patents, the high / medium entropy alloy material systems they involve often contain non-low activation elements such as Al and Cu; Refractory high / medium entropy alloy material system designed for high strength has extremely high strength performance at high temperature, but often has poor toughness

Method used

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  • A kind of nuclear entropy alloy system and its preparation method and application
  • A kind of nuclear entropy alloy system and its preparation method and application
  • A kind of nuclear entropy alloy system and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0068]A kind of FeCrV medium-entropy alloy with low activation, high temperature resistance, high strength and high toughness for nuclear use, which is composed of three low activation elements Fe, Cr and V, wherein the atomic molar ratio of Fe, Cr and V is 1: 1:1. The preparation method of entropy alloy in FeCrV specifically comprises the steps:

[0069] Step 1, raw material handling and weighing ratio:

[0070] First, remove impurities and oxides on the surface of Fe, Cr, V and M metal single-mass blocks with a purity greater than 99.9wt% by sanding; then use acetone, alcohol and deionized water to clean in an ultrasonic cleaner for 5min (ultrasonic power The density is 0.8W / cm 2 , the frequency is 33Hz), and the clean Fe, Cr, V and M metal elements are obtained after drying with a hair dryer for future use. The spare metal element was weighed with a high-precision balance (accuracy: 0.0001g), wherein the mass percentages of Fe, Cr and V were 35.17%, 32.75% and 32.08% in ...

Embodiment 2

[0074] A kind of FeCrVTi with low activation, high temperature resistance, high strength and high toughness for nuclear use 0.05 A medium-entropy alloy, which is composed of four low-activation elements Fe, Cr, V, and Ti, wherein the atomic molar ratio of Fe, Cr, V, and Ti is 1:1:1:0.05. FeCrVTi 0.05 The preparation method of medium entropy alloy specifically comprises steps with embodiment 1.

[0075] The difference between this example and Example 1 is that the mass percentages of Fe, Cr, V and Ti are 34.65%, 32.26%, 31.60% and 1.48% in turn, that is, the metal elements of Fe, Cr, V and Ti are weighed in order 3.465g, 3.226g, 3.160g and 0.148g.

[0076] Other is the same as embodiment 1, FeCrVTi 0.05 The medium entropy alloy is prepared. .

Embodiment 3

[0078] A kind of FeCrVTi with low activation, high temperature resistance, high strength and high toughness for nuclear use 0.1 A medium-entropy alloy, which is composed of four low-activation elements Fe, Cr, V, and Ti, wherein the atomic molar ratio of Fe, Cr, V, and Ti is 1:1:1:0.1. FeCrVTi 0.1 The preparation method of medium entropy alloy specifically comprises steps with embodiment 1.

[0079] The difference between this example and Example 1 is that the mass percentages of Fe, Cr, V and Ti are 34.14%, 31.79%, 31.14% and 2.93% in turn, that is, the metal elements of Fe, Cr, V and Ti are weighed in order are 3.414g, 3.179g, 3.114g and 0.293g.

[0080] Other is the same as embodiment 1, FeCrVTi 01 The medium entropy alloy is prepared.

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Abstract

The invention discloses a nuclear medium-entropy alloy system and its preparation method and application, and belongs to the technical field of medium-entropy alloy materials and their preparation. The FeCrV system of the present invention is composed of four low activation elements Fe, Cr, V and M (one of Ti, Mn, Ni, Zn), wherein the atomic molar ratio of Fe, Cr, V and M is 1:1: 1:x, 0≤x≤0.5. FeCrV medium entropy alloy materials with low activation, high temperature resistance, high strength and high toughness for nuclear use were prepared by using magnetic levitation (no contact between metal raw material samples and crucible) arc melting method and annealing heat treatment after raw material treatment and weighing ratio. The low-activation FeCrV-based medium-entropy alloy material of the invention exhibits excellent high-temperature thermal stability, high strength and high toughness. The medium entropy alloy is expected to be used in ADS spallation target window and subcritical reactor core, fusion reactor and fourth generation nuclear fission reactor core, as well as structural material or coating material in strong acid environment or liquid metal environment.

Description

technical field [0001] The invention belongs to the technical field of high / medium entropy alloy materials and their preparation, in particular to a FeCrV system (FeCrVM) with low activation, high temperature resistance, high strength and high toughness for nuclear use. x , M=Ti, Mn, Ni, Zn, 0≤x≤0.5) medium entropy alloy system and its preparation method and application. Background technique [0002] Nuclear energy is a low-carbon clean energy with high energy density. In China and even the world, the vigorous development of nuclear energy has attracted much attention as an important way to overcome the shortage of fossil energy and environmental pollution control. The service behavior of materials in extreme environments is one of the main bottlenecks restricting the use and development of nuclear energy. Material issues determine the feasibility, safety and economy of nuclear energy systems. [0003] The innovation of nuclear power technology has brought about a substant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C30/06C21D1/26G21B1/13G21C3/07
CPCC22C30/00C22C30/06C22C38/24C22C38/28C22C38/04C22C38/46C22C38/002C22C38/38C22C33/04C21C7/10C21C5/5241C21D1/26G21B1/13G21C3/07Y02E30/10Y02E30/30
Inventor 孙建荣成钊意崔晶浩张林奇常海龙台鹏飞
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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