CN117488165A - High-ductility high-entropy alloy material and preparation method thereof - Google Patents
High-ductility high-entropy alloy material and preparation method thereof Download PDFInfo
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- CN117488165A CN117488165A CN202311522173.5A CN202311522173A CN117488165A CN 117488165 A CN117488165 A CN 117488165A CN 202311522173 A CN202311522173 A CN 202311522173A CN 117488165 A CN117488165 A CN 117488165A
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- 239000000956 alloy Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000012856 weighed raw material Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims 2
- 238000005097 cold rolling Methods 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 2
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000011812 mixed powder Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910017709 Ni Co Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a high-ductility high-entropy alloy material and a preparation method thereof, which relate to the field of high-entropy alloy, and the raw materials of the invention comprise the following components in percentage by atomic number: 40% of Fe, N i% of Co, 20% of Cr. The alloy ingot blank is prepared by a smelting method, and the extrusion plate is obtained by juicing and annealing the ingot blank, and the elongation percentage can reach 125.7%. The invention has the advantages of high Fe content, low development cost, simple process flow, strong operability and wide application prospect.
Description
Technical Field
The invention relates to the field of high-entropy alloy, in particular to a high-ductility high-entropy alloy material and a preparation method thereof.
Background
The concept of high-entropy alloys (HEA) brings new ideas for alloy design. The alloy breaks through the limitation of one or two main elements in the traditional alloy, because a plurality of main elements play roles in the HEA system, the content of each main element is 5% -35% of the novel alloy, and the novel alloy has the advantages of high strength, high hardness, good wear resistance, corrosion resistance and fatigue resistance, excellent low-temperature and high-temperature mechanical properties, potential soft magnetic properties and the like, which are superior to those of the traditional alloy.
At present, a new trend is to develop non-equiatomic high entropy tubes with single-phase, dual-phase or multi-phase solid solutions, which enhances the flexibility of high entropy alloy design. Such non-isoatomic high entropy reactions greatly widen the composition space of high entropy alloys, and thus efforts to explore new non-isoatomic high entropy alloy compositions are increasing compared to isoatomic high entropy alloys, with high demands for further improving properties, especially ductility, of materials, which is a problem that is currently urgently needed to be solved.
Disclosure of Invention
The invention aims to provide a high-ductility high-entropy alloy material and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the alloy comprises the following components in percentage by mass: 40% of Fe, 20% of Ni, 20% of Co and 20% of Cr.
The invention provides a preparation method of a high-ductility high-entropy alloy material, which comprises the following steps:
(1) 40 parts of Fe, 20 parts of Co, 20 parts of Ci, 20 parts of N i are weighed out with a balance (all pure elements and purity > 99.8%). And (3) removing surface stains from the weighed raw materials by using alcohol, drying and uniformly mixing by using a blower, and placing the dried and uniformly mixed raw materials into a copper crucible of a vacuum arc melting furnace.
(2) And (3) reversely using high-purity argon gas for gas washing for 3 times before smelting, removing oxygen adsorbed in the electric arc furnace, finally pumping the gas pressure in the furnace to 5 multiplied by 10 < -3 > Pa by using a molecular pump, and then filling 0.005MPa high-purity argon gas. The alloy ingot was repeatedly melted 5 times to ensure composition uniformity.
(3) The hot rolling temperature is 900 ℃, each pass is 0.5mm, the total pressing amount is 50%, and the total pressing amount is 10mm-5mm.
(4) And (3) low-temperature rolling, wherein the liquid nitrogen is soaked for 15min before rolling, the pressing amount of each pass is 0.3mm, the liquid nitrogen is soaked for 5min again after each rolling, and the total pressing amount is 80 mm to 1mm.
(5) And finally, annealing the cold-rolled sheet for 10min at 800 ℃ in a vacuum environment.
In summary, the invention has the beneficial effects that:
1. the content of Fe in the composition is higher than that of the rest Co, cr and Ni elements, and meanwhile, compared with the content of Fe element in a cantor alloy (Fe Mn Ni Co Cr), the content of Fe element in the composition is greatly increased, so that the development cost is reduced.
2. The process adopted by the invention is a simple extrusion and heat treatment process, the process is simple to operate and easy to control, the production efficiency is improved, and the industrial application of the alloy is facilitated.
3. The high-temperature elongation rate of the alloy can reach 125.7%, which lays a foundation for secondary molding and industrial production.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph of creep time at 650℃and 100MPa for example 1;
FIG. 2 is a graph of creep time at 650℃and 100MPa for comparative example 1;
FIG. 3 is a graph of creep time at 650℃and 100MPa for comparative example 2;
FIG. 4 is a graph of creep time at 650℃and 100MPa for comparative example 3;
FIG. 5 is a graph comparing the performance of example 1 with comparative examples 1, 2, and 3.
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1
The embodiment of the application provides a high-ductility high-entropy alloy material and a preparation method thereof, wherein the preparation method comprises the following steps:
40 parts of Fe, 20 parts of Co, 20 parts of Cr and 20 parts of N i are weighed into a balance (all pure elements and purity > 99.8%). And (3) removing surface stains from the weighed raw materials by using alcohol, drying and uniformly mixing by using a blower, and placing the dried and uniformly mixed raw materials into a copper crucible of a vacuum arc melting furnace. And (3) reversely using high-purity argon gas for gas washing for 3 times before smelting, removing oxygen adsorbed in the electric arc furnace as much as possible, finally pumping the gas pressure in the furnace to 5 multiplied by 10 < -3 > Pa by using a molecular pump, and then filling 0.005MPa high-purity argon gas, so that on one hand, the melt is protected, and on the other hand, the high-purity argon gas is used as an ionization medium. The alloy ingot was repeatedly melted 5 times to ensure composition uniformity. The hot rolling temperature is 900 ℃, each pass is 0.5mm, the total pressing amount is 50%, and the total pressing amount is 10mm-5mm. And (3) low-temperature rolling, wherein the liquid nitrogen is soaked for 15min before rolling, the pressing amount of each pass is 0.3mm, the liquid nitrogen is soaked for 5min again after each rolling, and the total pressing amount is 80 mm to 1mm. And finally, annealing the cold-rolled sheet for 10min at 800 ℃ in a vacuum environment.
Comparative example 1
The high-ductility high-entropy alloy material comprises Fe, co, cr, ni and comprises the following components in atomic percent: 40%, 20%.
The preparation method comprises the following steps: the powder was dried under vacuum at 60 ℃ for 12 hours, and the mixed powder was 3D printed by SLM mode, the SLM parameters selected for manufacturing were: laser power 180W, scanning speed 800mm/s, hatch pitch 0.12mm, layer thickness 30 μm and laser spot diameter 60 μm, and printing under argon atmosphere.
Comparative example 2
The high-ductility high-entropy alloy material comprises Fe, co, cr, ni and comprises the following components in atomic percent: 25%, 25%.
The preparation method comprises the following steps: the mixed powder was prepared by vacuum induction melting. The ingot was hot rolled in air at about 1100 ℃ to produce a sheet. The hot rolled plate was annealed in air at 1050 ℃ for 1 hour and water quenched.
Comparative example 3
The high-ductility high-entropy alloy material comprises Fe, co, cr, ni, mn and comprises the following components in atomic percent: 20%, 20%.
The preparation method comprises the following steps: the mixed powder was prepared by vacuum induction melting. The ingot was hot rolled in air at about 1100 ℃ to produce a sheet. The hot rolled plate was annealed in air at 1050 ℃ for 1 hour and water quenched.
TABLE 1 comparison of the Properties of the inventive high-grade alloy
| Elongation (%) | |
| Example 1 | 125.7 |
| Comparative example 1 | 2.557 |
| Comparative example 2 | 35.245 |
| Comparative example 3 | 36.797 |
The foregoing is merely illustrative of specific embodiments of the invention, and the scope of the invention is not limited thereto, but is intended to cover any variations or alternatives not contemplated by the inventors. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (3)
1. The high-ductility high-entropy alloy material is characterized by comprising the following raw materials in percentage by atomic number: fe40%, ni20%, co20%, cr20%;
and (3) hot rolling: the temperature is 900 ℃, the total pressing amount is 50% and is 10mm-5mm after each pass is 0.5 mm;
cold rolling at low temperature: soaking in liquid nitrogen for 15min before rolling, wherein the pressing amount of each pass is 0.3mm, soaking in liquid nitrogen for 5min after each rolling, and the total pressing amount is 80% from 5mm to 1mm;
quenching, namely annealing the cold-rolled sheet for 10min at 800 ℃ in a vacuum environment.
2. The high-ductility high-entropy alloy material according to claim 1, wherein: high-temperature plasticity, and the elongation rate reaches 125 percent.
3. The method for preparing the high-ductility high-entropy alloy material according to claims 1-2, wherein the method comprises the following steps: the method comprises the following steps:
(1) 40 parts of Fe, 20 parts of Co, 20 parts of Ci and 20 parts of Ni are weighed into a balance (all pure elements and purity > 99.8%). And (3) removing surface stains from the weighed raw materials by using alcohol, drying and uniformly mixing by using a blower, and placing the dried and uniformly mixed raw materials into a copper crucible of a vacuum arc melting furnace.
(2) And (3) reversely using high-purity argon gas for gas washing for 3 times before smelting, removing oxygen adsorbed in the electric arc furnace, finally pumping the gas pressure in the furnace to 5 multiplied by 10 < -3 > Pa by using a molecular pump, and then filling 0.005MPa high-purity argon gas. The alloy ingot was repeatedly melted 5 times to ensure composition uniformity.
(3) The hot rolling temperature is 900 ℃, each pass is 0.5mm, the total pressing amount is 50%, and the total pressing amount is 10mm-5mm.
(4) And (3) low-temperature rolling, wherein the liquid nitrogen is soaked for 15min before rolling, the pressing amount of each pass is 0.3mm, the liquid nitrogen is soaked for 5min again after each rolling, and the total pressing amount is 80 mm to 1mm.
(5) And finally, annealing the cold-rolled sheet for 10min at 800 ℃ in a vacuum environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311522173.5A CN117488165A (en) | 2023-11-15 | 2023-11-15 | High-ductility high-entropy alloy material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311522173.5A CN117488165A (en) | 2023-11-15 | 2023-11-15 | High-ductility high-entropy alloy material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN117488165A true CN117488165A (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311522173.5A Pending CN117488165A (en) | 2023-11-15 | 2023-11-15 | High-ductility high-entropy alloy material and preparation method thereof |
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| Country | Link |
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| CN (1) | CN117488165A (en) |
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- 2023-11-15 CN CN202311522173.5A patent/CN117488165A/en active Pending
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