Multielement alloy based on tungsten-potassium alloy and preparation method thereof

A multi-element alloy and alloy technology, applied in the field of metal materials, can solve the problems that the performance cannot fully meet the service requirements of the fusion demonstration reactor, the radiation resistance performance of the W-K alloy is not excellent, and the thermal shock resistance needs to be improved, so as to achieve excellent radiation resistance. performance, improving mechanical properties and radiation resistance, and the effect of grain refinement

Inactive Publication Date: 2014-11-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although W-K alloy is superior to other W-based materials in many aspects, its performance still cannot fully meet the service requirements of fusion demonstration reactors. For example, the radiation resistance of W-K alloy is not excellent, and its thermal shock resistance needs to be improved.

Method used

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  • Multielement alloy based on tungsten-potassium alloy and preparation method thereof
  • Multielement alloy based on tungsten-potassium alloy and preparation method thereof
  • Multielement alloy based on tungsten-potassium alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) High energy ball milling of W-K-0.1wt% Ti alloy powder

[0027] In this embodiment, W-K alloy powder and Ti powder are used as raw materials, and the content of K in the W-K alloy powder is 0.007wt%.

[0028] Unpack the W-K alloy powder and Ti powder in an ultra-low oxygen glove box, then use an electronic balance with an accuracy of 0.001g to weigh 159.840g of W-K alloy powder and 0.160g of Ti powder, and then put a vacuumable cemented carbide ball mill jar Put it into the ultra-low oxygen glove box, add the weighed W-K alloy powder and Ti powder into the ball mill jar, then weigh the cemented carbide grinding balls in the ultra-low oxygen glove box and add them to the ball mill jar, and grind the balls The mass ratio of the mass of W-K alloy powder and Ti powder to the total mass of Ti powder is 5:1, among which, the mass ratio of grinding balls with a diameter of 10mm to a diameter of 6mm is 1:2; The technical indicators for hypoxic glove box work are: the oxyge...

Embodiment 2

[0044] (1) High energy ball milling of W-K-0.1wt% Y alloy powder

[0045] In this embodiment, W-K alloy powder and Y powder are used as raw materials, and the content of K in the W-K alloy powder is 0.007wt%.

[0046] Unpack the W-K alloy powder and Y powder in an ultra-low oxygen glove box, then use an electronic balance with an accuracy of 0.001g to weigh 159.840g of W-K alloy powder and 0.160g of Y powder, and then put the vacuumable cemented carbide ball mill jar Put it into the ultra-low oxygen glove box, add the weighed W-K alloy powder and Y powder into the ball milling jar, then weigh the cemented carbide grinding balls in the ultra-low oxygen glove box and add them to the ball milling jar, and grind the balls The mass ratio of the mass of W-K alloy powder and Y powder to the total mass of Y powder is 5:1, and the mass ratio of the balls with a diameter of 10mm to 6mm is 1:2; The technical indicators for hypoxic glove box work are: the oxygen content is less than 0.1p...

Embodiment 3

[0060] (1) High energy ball milling of W-K-1wt%Y alloy powder

[0061] In this embodiment, W-K alloy powder and Y powder are used as raw materials, and the content of K in the W-K alloy powder is 0.007wt%.

[0062] Unpack the W-K alloy powder and Y powder in an ultra-low oxygen glove box, then use an electronic balance with an accuracy of 0.001g to weigh 158.410g of W-K alloy powder and 1.598g of Y powder, and then put the vacuumable cemented carbide ball mill jar Put it into the ultra-low oxygen glove box, add the weighed W-K alloy powder and Y powder into the ball milling jar, then weigh the cemented carbide grinding balls in the ultra-low oxygen glove box and add them to the ball milling jar, and grind the balls The mass ratio of the mass of W-K alloy powder and Y powder to the total mass of Y powder is 5:1, and the mass ratio of the balls with a diameter of 10mm to 6mm is 1:2; The technical indicators for hypoxic glove box work are: the oxygen content is less than 0.1ppm,...

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Abstract

The invention belongs to the field of metal material, and relates to a preparation method of a multielement alloy based on a tungsten-potassium alloy. The method comprises the following process steps: (1) in an argon atmosphere with the oxygen content of less than 0.1 ppm and the water content of less than 0.1 ppm, weighing a tungsten-potassium alloy powder, a metal X powder and grinding balls, together adding into a ball milling tank, vacuumizing the ball milling tank, then filling the ball milling tank with mixed gas of hydrogen gas and argon gas, and carrying out ball milling for 20-60 h, wherein the metal X is at least one of Ti and Y; and (2) loading the mixed powder obtained in the step (1) into a mould, then putting the mould loaded with the mixed powder into a spark plasma sintering furnace, sintering for 1-6 min under the pressure of 40-100 MPa and the temperature of 1600-1900 DEG C, then cooling to the room temperature along with the furnace, next reducing the pressure to the normal pressure, and thus obtaining the product. The multielement alloy prepared by the method has excellent irradiation resistance and thermal shock resistance.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a multi-element alloy based on tungsten-potassium alloy and a preparation method thereof. Background technique [0002] Nuclear fusion energy is recognized as an important way to effectively solve the future energy and environmental problems of human society. At present, the development of nuclear fusion energy has entered the engineering feasibility stage from the basic research stage. To achieve the commercial application of fusion reactors, fusion reactor materials are one of the key factors for the successful commercial application of nuclear fusion. Plasma-facing materials (PFM) in fusion reactors are armor materials that directly face high-temperature plasma. Due to their extremely harsh working environment, they are the primary problem in the current research on fusion reactor materials. Among the existing PFM materials, tungsten-potassium (referred to as W-K in the following...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C27/04
Inventor 唐军黄波杨吉军肖野
Owner SICHUAN UNIV
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