CN114737099A - NbCrReRuMo high-strength refractory high-entropy alloy and preparation method thereof - Google Patents
NbCrReRuMo high-strength refractory high-entropy alloy and preparation method thereof Download PDFInfo
- Publication number
- CN114737099A CN114737099A CN202110017325.0A CN202110017325A CN114737099A CN 114737099 A CN114737099 A CN 114737099A CN 202110017325 A CN202110017325 A CN 202110017325A CN 114737099 A CN114737099 A CN 114737099A
- Authority
- CN
- China
- Prior art keywords
- powder
- entropy alloy
- alloy
- temperature
- strength refractory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 81
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 69
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 23
- 238000007731 hot pressing Methods 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 14
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 14
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000000498 ball milling Methods 0.000 claims description 26
- 238000011049 filling Methods 0.000 claims description 24
- 239000006104 solid solution Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 14
- 239000011651 chromium Substances 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 10
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 10
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 10
- 239000010955 niobium Substances 0.000 claims description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 9
- 238000005275 alloying Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 4
- 238000009461 vacuum packaging Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 238000005551 mechanical alloying Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910000753 refractory alloy Inorganic materials 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to the field of metal materials, in particular to a NbCrReRuMo high-strength refractory high-entropy alloy and a preparation method thereof. The high-entropy alloy consists of Nb, Cr, Re, Ru and Mo, wherein the components in atomic percentage are Nb: 20-23%, Cr: 20-23%, Re: 20-23%, Ru: 20-23%, Mo: 8 to 20 percent. The invention adopts a mechanical powder mixing method to obtain composite powder, and then prepares the NbCrReRuMo single-phase high-strength refractory high-entropy alloy with good comprehensive properties through hot-pressing sintering, wherein the structure is uniform, and the comprehensive properties such as hardness, strength and the like are obviously improved. The high-strength refractory high-entropy alloy is expected to be applied to important fields such as aerospace, vehicle and ship industries and the like.
Description
Technical Field
The invention belongs to the field of metal materials, and particularly relates to a NbCrReRuMo high-strength refractory high-entropy alloy.
Background
With the development of the aerospace and vehicle and ship industries, hot end components of engines, such as turbine blades, exhaust nozzles, engine pistons, etc., are subjected to increasingly higher temperatures. In order to reduce the fuel consumption of future aerospace engines and automobile engines and prolong the service life, a great number of advanced high-strength refractory materials with low density, good room temperature toughness and high temperature strength are used in large quantities. Light metal materials such as aluminum, magnesium, titanium and the like have characteristics of high specific strength, high specific rigidity and the like, and are widely applied to the manufacturing fields of aerospace, vehicle and ship industries and the like. In recent years, the demand of China for aluminum alloy and composite materials thereof is continuously increased, and a plurality of parts such as automobiles, aviation gas engines, tanks, armored vehicles and the like are made of aluminum alloy materials; the magnesium alloy is the lightest structural metal, has the advantages of high strength, high rigidity, good machinability, good thermal conductivity and the like, and has obvious advantages of reducing the self weight of equipment, reducing the resistance in operation, reducing the energy consumption, increasing the load and the like, but the two alloys have low strength and poor corrosion resistance, and are difficult to meet the requirements of complex working conditions such as high temperature, high pressure, strong corrosive media and the like. Titanium alloy has the properties of small density, good corrosion resistance, high heat resistance, high rigidity and strength and the like, but the high cost is always the bottleneck limiting the wide application of the titanium alloy. Therefore, the development of high-strength refractory alloy with good mechanical property, high thermal shock resistance and excellent corrosion resistance is urgently needed, and the high-strength refractory alloy has great significance for realizing high-quality, low-cost and short-period manufacturing of lightweight parts, relieving energy and environmental protection pressure caused by transportation, saving energy and reducing emission.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the NbCrReRuMo high-strength refractory high-entropy alloy, the proper types and relative contents of alloying elements are selected, the high-entropy alloy is combined with a mechanical alloying technology, the solid solution of niobium element, chromium element, rhenium element, ruthenium element and molybdenum element is realized through mechanical alloying, so that the single-phase solid solution high-entropy alloy is obtained, the hardness of the high-strength refractory high-entropy alloy prepared after hot-pressing sintering can be kept at the Vickers hardness of 6GPa, and the high-strength refractory high-entropy alloy is expected to be applied to important fields of aerospace, vehicle and ship industries and the like.
In order to achieve the purpose, the invention adopts the preparation technical scheme that: a high-strength refractory high-entropy alloy comprises the following components in percentage by atom: 20-23%, Cr: 20-23%, Re: 20-23%, Ru: 20-23%, Mo: 8 to 20 percent. The high-strength refractory high-entropy alloy is a single-phase solid solution high-entropy alloy.
Preferably, the particle sizes of the niobium element, the chromium element, the rhenium element, the ruthenium element and the molybdenum element are all 300 meshes.
The invention also discloses a preparation method of the high-strength refractory high-entropy alloy, which comprises the following steps:
(1) niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder with the granularity of 300 meshes are prepared, and the powder is formed by Nb: 20-23%, Cr: 20-23%, Re: 20-23%, Ru: 20-23%, Mo: 8-20%, mixing the powders, loading into ball milling jar, and vacuumizing to 1 × 10-2Pa, filling argon to 1X 105Pa, this processRepeatedly operating for three times;
(2) alloying and ball-milling the alloy powder for a certain time by a ball mill, vacuumizing a ball-milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank according to a certain volume ratio, continuously grinding for a certain time, and taking out a mixture of the alloy powder and the absolute ethyl alcohol;
(3) standing the mixture for 20h, filtering to remove supernatant, placing in a vacuum drying oven, wherein the vacuum degree and temperature of the drying oven are always kept at a certain vacuum degree and temperature, keeping the temperature and drying for a certain time to obtain single-phase solid solution high-entropy alloy powder, and finally, vacuum packaging and storing the powder;
(4) the method comprises the steps of filling single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, putting into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min when hot-pressing sintering is carried out, then reducing the pressure to a certain pressure, increasing the temperature to a certain temperature at a certain temperature increasing speed, carrying out hot-pressing sintering for a certain time, and finally obtaining the high-strength refractory high-entropy alloy block.
Compared with the prior art, the invention has the beneficial effects and innovations that:
(1) new components of NbCrReRuMo alloy are designed in a brand-new way, niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder are uniformly mixed according to a certain proportion by means of mechanical alloying and then are alloyed, and single-phase solid solution high-entropy alloy powder is finally and successfully prepared by drying the alloy powder, so that the method has important significance for expanding the range of materials for alloy components and a preparation method. The high-entropy alloy has a high melting point, and has important application potential in important fields such as aerospace and the like.
(2) The novel method for preparing the alloy powder, which cannot be replaced by the conventional method, is realized by means of a mechanical alloying technology, and particularly the high-strength refractory alloy powder prepared by the method is expected to be applied to certain special occasions.
Detailed Description
The present invention will be described in detail with reference to examples.
The first embodiment is as follows:
(1) preparing the powder with a particle size of 300 meshesNiobium, chromium, rhenium, ruthenium and molybdenum powders, consisting of, in atomic percent, Nb: 21%, Cr: 21%, Re: 21%, Ru: 21%, Mo: 16 percent, uniformly mixing the powder, filling the mixture into a ball milling tank, and vacuumizing the ball milling tank to 1 multiplied by 10-2Pa, filling argon to 1X 105Pa, repeating the process for three times;
(2) alloying the alloy powder by a ball mill for 25h, and vacuumizing a ball milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank, wherein the volume ratio of the powder to the absolute ethyl alcohol is 1:4, continuously grinding for 10min, and taking out the mixture of the alloy powder and the absolute ethyl alcohol;
(3) standing the mixture for 20 hr, filtering off supernatant, and vacuum drying in a vacuum oven, wherein the vacuum in the oven is maintained at 1 × 10-1Pa, keeping the temperature to 70 ℃, preserving heat and drying for 10 hours to obtain single-phase solid solution high-entropy alloy powder, and finally packaging and storing the powder in vacuum;
(4) the method comprises the steps of filling single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, putting into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min, reducing the pressure to 300MPa, increasing the temperature to 1000 ℃ at the temperature rise speed of 50 ℃/min, and carrying out hot-pressing sintering for 1.5h to obtain the high-strength refractory high-entropy alloy block.
This example successfully produced a single phase solid solution high entropy alloy with a vickers hardness of 5.8 GPa.
Example two
(1) Niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder with the granularity of 300 meshes are prepared, and the powder is formed by Nb: 22%, Cr: 21%, Re: 22%, Ru: 22%, Mo: 13 percent, uniformly mixing the powder, filling the mixture into a ball milling tank, and vacuumizing the ball milling tank to 1 multiplied by 10-2Pa, filling argon to 1X 105Pa, repeating the process for three times;
(2) alloying the alloy powder by a ball mill for 25h, and vacuumizing a ball milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank, wherein the volume ratio of the powder to the absolute ethyl alcohol is 1:5, continuously grinding for 10min, and mixing the alloy powder with the absolute ethyl alcoholTaking out;
(3) standing the mixture for 20 hr, filtering off supernatant, and placing in a vacuum drying oven, wherein the vacuum of the drying oven is maintained to 1 × 10-1Pa, keeping the temperature to 70 ℃, preserving heat and drying for 10 hours to obtain single-phase solid solution high-entropy alloy powder, and finally packaging and storing the powder in vacuum;
(4) the method comprises the steps of filling single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, putting into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min, reducing the pressure to 300MPa, increasing the temperature to 1000 ℃ at the temperature rise speed of 60 ℃/min, and carrying out hot-pressing sintering for 1h to obtain the high-strength refractory high-entropy alloy block.
The single-phase solid solution high-entropy alloy is successfully prepared by the embodiment, and the Vickers hardness of the finally obtained high-entropy alloy is 5.9 GPa.
EXAMPLE III
(1) Niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder with the granularity of 300 meshes are prepared, and the powder is formed by Nb: 22%, Cr: 22%, Re: 22%, Ru: 20%, Mo: 14 percent, uniformly mixing the powder, filling the mixture into a ball milling tank, and vacuumizing the ball milling tank to 1 multiplied by 10-2Pa, filling argon to 1X 105Pa, repeating the process for three times;
(2) alloying the alloy powder by a ball mill for 25h, and vacuumizing a ball milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank, wherein the volume ratio of the powder to the absolute ethyl alcohol is 1:5, continuously grinding for 10min, and taking out the mixture of the alloy powder and the absolute ethyl alcohol;
(3) standing the mixture for 20 hr, filtering off supernatant, and placing in a vacuum drying oven, wherein the vacuum of the drying oven is maintained to 1 × 10-1Pa, keeping the temperature to 70 ℃, keeping the temperature and drying for 10 hours to obtain single-phase solid solution high-entropy alloy powder, and finally packaging and storing the powder in vacuum;
(4) the method comprises the steps of filling single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, putting into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min, reducing the pressure to 300MPa, increasing the temperature to 1100 ℃ at the temperature rise speed of 50 ℃/min, and carrying out hot-pressing sintering for 1h to obtain the high-strength refractory high-entropy alloy block.
The single-phase solid solution high-entropy alloy is successfully prepared by the embodiment, and the Vickers hardness of the alloy is 5.95 GPa.
The foregoing is only a result of the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (3)
1. The high-strength refractory high-entropy alloy is characterized by comprising the following components in percentage by atom: 20-23%, Cr: 20-23%, Re: 20-23%, Ru: 20-23%, Mo: 8-20%, the high-strength refractory high-entropy alloy is a single-phase solid solution high-entropy alloy, and the preparation method of the high-strength refractory high-entropy alloy comprises the following steps:
1) niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder with the granularity of 300 meshes are prepared, and the powder is formed by Nb: 20-23%, Cr: 20-23%, Re: 20-23%, Ru: 20-23%, Mo: 8-20%, mixing the powders, loading into ball milling jar, and vacuumizing to 1 × 10-2Pa, filling argon to 1X 105Pa, repeating the process for three times;
2) alloying the alloy powder by a ball mill for 25-30h, vacuumizing a ball milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank, wherein the volume ratio of the powder to the absolute ethyl alcohol is 1 (3-5), continuously grinding for 10-15 min, and taking out the mixture of the alloy powder and the absolute ethyl alcohol;
3) standing the mixture for 20 hr, filtering off supernatant, and placing in a vacuum drying oven, wherein the vacuum of the drying oven is maintained to 1 × 10-1～1×10-2Pa, keeping the temperature to 70-75 ℃, keeping the temperature and drying for 8-12 h to obtain single-phase solid solution high-entropy alloy powder, and finally carrying out vacuum packaging and storage on the powder;
4) the method comprises the steps of loading single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, placing into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min, reducing the pressure to 250-320 MPa, increasing the temperature to 1000-1100 ℃ at the temperature rise speed of 50-60 ℃/min, and carrying out hot-pressing sintering for 0.5-1.5h to finally obtain the high-strength refractory high-entropy alloy block.
2. A high strength refractory high entropy alloy as claimed in claim 1, wherein the alloy consists of, in atomic percent, Nb: 21-22%, Cr: 21-22%, Re: 21-22%, Ru: 21-22%, Mo: 12 to 16 percent; the preparation method of the high-strength refractory high-entropy alloy comprises the following steps:
1) niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder with the granularity of 300 meshes are prepared, and the powder is formed by Nb: 20-23%, Cr: 20-23%, Re: 20-23%, Ru: 20-23%, Mo: 8-20%, mixing the powders, loading into ball milling jar, and vacuumizing to 1 × 10-2Pa, filling argon to 1X 105Pa, repeatedly operating the process for three times;
2) alloying the alloy powder by a ball mill for 25h, and vacuumizing a ball milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank, wherein the volume ratio of the powder to the absolute ethyl alcohol is 1:4, continuously grinding for 10min, and taking out the mixture of the alloy powder and the absolute ethyl alcohol;
3) standing the mixture for 20 hr, filtering off supernatant, and placing in a vacuum drying oven, wherein the vacuum of the drying oven is maintained to 1 × 10-1Pa, keeping the temperature to 70 ℃, preserving heat and drying for 10 hours to obtain single-phase solid solution high-entropy alloy powder, and finally packaging and storing the powder in vacuum;
4) the method comprises the steps of filling single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, putting into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min when hot-pressing sintering is carried out, then reducing the pressure to 300MPa, increasing the temperature to 1000 ℃ at the temperature increase speed of 50 ℃/min, carrying out hot-pressing sintering for 1.5h, and finally obtaining the high-strength refractory high-entropy alloy block.
3. A high strength refractory high entropy alloy as claimed in claim 1, wherein the alloy consists of, in atomic percent, Nb: 21%, Cr: 21%, Re: 21%, Ru: 21%, Mo: 16 percent; the preparation method of the high-strength refractory high-entropy alloy comprises the following steps:
1) niobium element, chromium element, rhenium element, ruthenium element and molybdenum element powder with the granularity of 300 meshes are prepared, and the powder is formed by Nb: 21%, Cr: 21%, Re: 21%, Ru: 21%, Mo: 16 percent, uniformly mixing the powder, filling the mixture into a ball milling tank, and vacuumizing the ball milling tank to 1 multiplied by 10-2Pa, filling argon to 1X 105Pa, repeatedly operating the process for three times;
2) alloying the alloy powder by a ball mill for 25h, and vacuumizing a ball milling tank to 1 multiplied by 10-1Pa, filling absolute ethyl alcohol into the ball milling tank, wherein the volume ratio of the powder to the absolute ethyl alcohol is 1:4, continuously grinding for 10min, and taking out the mixture of the alloy powder and the absolute ethyl alcohol;
3) standing the mixture for 20 hr, filtering off supernatant, and placing in a vacuum drying oven, wherein the vacuum of the drying oven is maintained to 1 × 10-1Pa, keeping the temperature to 70 ℃, keeping the temperature and drying for 10 hours to obtain single-phase solid solution high-entropy alloy powder, and finally packaging and storing the powder in vacuum;
4) the method comprises the steps of filling single-phase solid solution high-entropy alloy powder into a hard alloy die with graphite paper laid on the inner surface, compacting, putting into a hot-pressing sintering furnace, increasing the pressure to 500MPa at room temperature and maintaining the pressure for 20min, reducing the pressure to 300MPa, increasing the temperature to 1000 ℃ at the temperature rise speed of 50 ℃/min, and carrying out hot-pressing sintering for 1.5h to obtain the high-strength refractory high-entropy alloy block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017325.0A CN114737099B (en) | 2021-01-07 | 2021-01-07 | NbCrReRuMo high-strength refractory high-entropy alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017325.0A CN114737099B (en) | 2021-01-07 | 2021-01-07 | NbCrReRuMo high-strength refractory high-entropy alloy and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114737099A true CN114737099A (en) | 2022-07-12 |
| CN114737099B CN114737099B (en) | 2024-02-09 |
Family
ID=82273841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110017325.0A Active CN114737099B (en) | 2021-01-07 | 2021-01-07 | NbCrReRuMo high-strength refractory high-entropy alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737099B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016023366A (en) * | 2014-07-25 | 2016-02-08 | 株式会社日立製作所 | Manufacturing method of alloy structure |
| US20180036840A1 (en) * | 2016-08-04 | 2018-02-08 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
| CN108788168A (en) * | 2018-06-28 | 2018-11-13 | 广东省材料与加工研究所 | A kind of high-entropy alloy powder and the preparation method and application thereof of low nitrogen content |
| CN108950343A (en) * | 2018-08-01 | 2018-12-07 | 四川理工学院 | A kind of WC based hard alloy material and preparation method thereof based on high-entropy alloy |
| CN110079722A (en) * | 2019-06-05 | 2019-08-02 | 福州大学 | A kind of infusibility high-entropy alloy TiZrNbMoTa and its method for preparing powder metallurgy containing B |
| CN110135392A (en) * | 2019-05-27 | 2019-08-16 | 湖南工业大学 | A kind of electrical load kind identification method |
| CN110273077A (en) * | 2019-07-12 | 2019-09-24 | 长沙理工大学 | A kind of preparation method of large scale infusibility high-entropy alloy |
| CN110904377A (en) * | 2019-12-09 | 2020-03-24 | 中南大学 | Refractory high-entropy alloy powder and preparation method thereof |
| CN111349800A (en) * | 2020-03-25 | 2020-06-30 | 石家庄铁道大学 | Preparation method of high-entropy alloy duplex process |
-
2021
- 2021-01-07 CN CN202110017325.0A patent/CN114737099B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016023366A (en) * | 2014-07-25 | 2016-02-08 | 株式会社日立製作所 | Manufacturing method of alloy structure |
| US20180036840A1 (en) * | 2016-08-04 | 2018-02-08 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
| CN108788168A (en) * | 2018-06-28 | 2018-11-13 | 广东省材料与加工研究所 | A kind of high-entropy alloy powder and the preparation method and application thereof of low nitrogen content |
| CN108950343A (en) * | 2018-08-01 | 2018-12-07 | 四川理工学院 | A kind of WC based hard alloy material and preparation method thereof based on high-entropy alloy |
| CN110135392A (en) * | 2019-05-27 | 2019-08-16 | 湖南工业大学 | A kind of electrical load kind identification method |
| CN110079722A (en) * | 2019-06-05 | 2019-08-02 | 福州大学 | A kind of infusibility high-entropy alloy TiZrNbMoTa and its method for preparing powder metallurgy containing B |
| CN110273077A (en) * | 2019-07-12 | 2019-09-24 | 长沙理工大学 | A kind of preparation method of large scale infusibility high-entropy alloy |
| CN110904377A (en) * | 2019-12-09 | 2020-03-24 | 中南大学 | Refractory high-entropy alloy powder and preparation method thereof |
| CN111349800A (en) * | 2020-03-25 | 2020-06-30 | 石家庄铁道大学 | Preparation method of high-entropy alloy duplex process |
Non-Patent Citations (2)
| Title |
|---|
| 聂小武: "合金元素Ni、Mo、Zr对Laves相NbCr2化合物组织和性能的影响", 中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑 * |
| 邓景泉;操振华;: "高熵合金的研究进展", 安阳工学院学报 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114737099B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110257684B (en) | Preparation process of FeCrCoMnNi high-entropy alloy-based composite material | |
| CN111254376B (en) | Preparation method of high-entropy ceramic composite coating | |
| CN109554565B (en) | Interface optimization method of carbon nanotube reinforced aluminum matrix composite | |
| CN109365803B (en) | Additive manufacturing method of powder surface rare earth modified aluminum alloy complex component | |
| CN102634715B (en) | Ni3Al intermetallic-based solid self-lubricating composite material and preparation method thereof | |
| CN114645180B (en) | Double-phase reinforced aluminum alloy and preparation method thereof | |
| CN104759830A (en) | Method for production of performance enhanced metallic materials | |
| CN102690984A (en) | Rare earth ceramic reinforced molybdenum alloy and preparation method thereof | |
| CN103602902A (en) | Powder metallurgy pressure-resistant composite metal material and preparation method thereof | |
| CN102286694A (en) | Oxidation-resistant iron-based high-temperature alloy and preparation method thereof | |
| CN114959406A (en) | Oscillatory pressure sintering ultrahigh-temperature medium-entropy ceramic reinforced refractory fine-grain medium-entropy alloy composite material | |
| CN105478771A (en) | Low cost molybdenum tube target material making method | |
| CN114737099B (en) | NbCrReRuMo high-strength refractory high-entropy alloy and preparation method thereof | |
| CN109913717B (en) | Light high-entropy alloy and preparation method thereof | |
| CN111266571B (en) | Adhesive, TiAl alloy turbine injection molding preparation method and product | |
| CN102162052A (en) | High damping metal porous material and preparation method thereof | |
| CN105908035B (en) | A kind of high-temperature-resistant high magnesium-based composite material and preparation method thereof | |
| CN111575605A (en) | Stainless steel-based valve seat ring material for CNG engine and preparation method thereof | |
| CN109321787B (en) | Preparation method of aluminum-based composite material | |
| CN105537579A (en) | Turbocharger high-temperature-resistant turbine shell body and preparation method thereof | |
| CN101429607B (en) | Special particle reinforced high-temperature alloy and method for producing the same | |
| CN114774728A (en) | Wear-resistant aluminum alloy and preparation method thereof | |
| CN113020604A (en) | High-strength wear-resistant high-temperature-resistant titanium-aluminum oxide alloy material and preparation method thereof | |
| CN110184487B (en) | Powder metallurgy aluminum-based material and preparation method thereof | |
| CN106048306A (en) | Copper-alloyed Ti-8Si alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240112 Address after: 215500 Building 1, No. 2, Jianye Road, high tech Industrial Park, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Applicant after: Suzhou Leijianuo Electronic Technology Co.,Ltd. Address before: 300110 1-1-505-1, Xindu building, southwest of the intersection of Weijin road and wandezhuang street, Nankai District, Tianjin Applicant before: HUIJIAWANG (TIANJIN) TECHNOLOGY CO.,LTD. Effective date of registration: 20240112 Address after: 300110 1-1-505-1, Xindu building, southwest of the intersection of Weijin road and wandezhuang street, Nankai District, Tianjin Applicant after: HUIJIAWANG (TIANJIN) TECHNOLOGY CO.,LTD. Address before: No. 88, Taishan Road, Zhuzhou City, Hunan Province, 412007 Applicant before: HUNAN University OF TECHNOLOGY |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |