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Method for adjusting and controlling AlCoCrFeNi high-entropy alloy structure

A high-entropy alloy and microstructure technology, which is applied in the field of regulating the microstructure of AlCoCrFeNi high-entropy alloys, can solve the problems of high operating environment requirements and inability to operate in the atmosphere, and achieves the effect of a simple and easy method.

Active Publication Date: 2015-05-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings in the prior art that have high requirements on the operating environment and cannot operate under the atmosphere, the present invention proposes a method for regulating the structure of AlCoCrFeNi high-entropy alloys

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  • Method for adjusting and controlling AlCoCrFeNi high-entropy alloy structure

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Embodiment 1

[0029] This embodiment is a method for regulating the structure of AlCoCrFeNi high-entropy alloy. The experimental equipment used is a high-frequency induction power supply. The specific process is:

[0030] Step 1, the preparation of purifying agent:

[0031] The first step is to weigh the powdered Na with a mass ratio of 1:1. 2 B 4 o 7 and powdered Na 2 SiO 3 . In the present embodiment, take the Na of 20g 2 B 4 o 7 and 20g Na 2 SiO 3 . Na to be weighed 2 B 4 o 7 and Na 2 SiO 3 Placed in two corundum crucibles respectively. will hold Na 2 B 4 o 7 and Na 2 SiO 3 The two corundum crucibles were respectively placed in a muffle furnace, and the temperature of the two corundum crucibles was raised to 200° C. with the furnace and kept for 2 hours. After the heat preservation is completed, the temperature of the muffle furnace is raised to 400° C. and the temperature is maintained for 2 hours. After the heat preservation is finished, the two corundum crucib...

Embodiment 2

[0041] This embodiment is a method for regulating the structure of AlCoCrFeNi high-entropy alloy. The experimental equipment used is a high-frequency induction power supply. The specific process is:

[0042] Step 1, the preparation of purifying agent:

[0043] The first step is to weigh the powdered Na with a mass ratio of 1:1. 2 B 4 o 7 and powdered Na 2 SiO 3 . In the present embodiment, take the Na of 25g 2 B 4 o 7 and 25g Na 2 SiO 3 . Na to be weighed 2 B 4 o 7 and Na 2 SiO 3 Placed in two corundum crucibles respectively. will hold Na 2 B 4 o 7 and Na 2 SiO 3 The two corundum crucibles were respectively placed in a muffle furnace, and the temperature of the two corundum crucibles was raised to 300° C. with the furnace and kept for 3 hours. After the heat preservation is over, the temperature of the muffle furnace is raised to 460° C. and the temperature is maintained for 3 hours. After the heat preservation is finished, the two corundum crucibles a...

Embodiment 3

[0053] This embodiment is a method for regulating the structure of AlCoCrFeNi high-entropy alloy. The experimental equipment used is a high-frequency induction power supply. The specific process is:

[0054] Step 1, the preparation of purifying agent:

[0055] The first step is to weigh the powdered Na with a mass ratio of 1:1. 2 B 4 o 7 and powdered Na 2 SiO 3 . In the present embodiment, take the Na of 30g 2 B 4 o 7 and 30g Na 2 SiO 3 . Na to be weighed 2 B 4 o 7 and Na 2 SiO 3 Placed in two corundum crucibles respectively. will hold Na 2 B 4 o 7 and Na 2 SiO 3 The two corundum crucibles were respectively placed in a muffle furnace, and the temperature of the two corundum crucibles was raised to 300° C. with the furnace and kept for 2.5 hours. After the heat preservation is completed, the temperature of the muffle furnace is raised to 500° C. and the temperature is maintained for 2.5 hours. After the heat preservation is finished, the two corundum cr...

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Abstract

The invention discloses a method for adjusting and controlling an AlCoCrFeNi high-entropy alloy structure. According to the method, an AlCoCrFeNi high-entropy alloy is coated by a coating agent under an atmospheric environment, the organization form is changed by virtue of deep supper-cooling rapid solidification, the structure morphology is adjusted and controlled by acquiring a large super-cooling degree of the AlCoCrFeNi high-entropy alloy in an experimental process, and when the super-cooling degree is 100-150K, the structure is tiny, and feathery structures are distributed on a matrix structure.

Description

technical field [0001] The invention relates to a method for regulating the structure of a high-entropy alloy, in particular to a method for regulating the structure of an AlCoCrFeNi high-entropy alloy by means of deep supercooling. Background technique [0002] The design concept of traditional alloys is to use one or two alloy elements as matrix elements and other elements as alloy elements to form alloys, while the design concept of high-entropy alloys breaks the traditional concept of alloys. Various alloys Elements as the main elements form multi-principal high-entropy alloys. Although the high-entropy alloy has many components, it does not have a very complex structure. On the contrary, the structure is a simple solid solution structure, which has many excellent properties, such as good high-temperature strength, high hardness, and good friction and wear resistance. , so it has become a research hotspot in recent years and has a lot of room for development. For metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/16
Inventor 李金山贾文娟王军寇宏超胡锐张铁邦唐斌杨劼人薛祥义
Owner NORTHWESTERN POLYTECHNICAL UNIV
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