CN117259729A - Preparation method of copper eutectic high-entropy alloy composite ingot - Google Patents
Preparation method of copper eutectic high-entropy alloy composite ingot Download PDFInfo
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- CN117259729A CN117259729A CN202311309893.3A CN202311309893A CN117259729A CN 117259729 A CN117259729 A CN 117259729A CN 202311309893 A CN202311309893 A CN 202311309893A CN 117259729 A CN117259729 A CN 117259729A
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- 239000000956 alloy Substances 0.000 title claims abstract description 113
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 113
- 230000005496 eutectics Effects 0.000 title claims abstract description 112
- 239000010949 copper Substances 0.000 title claims abstract description 81
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 77
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 20
- 239000010439 graphite Substances 0.000 claims abstract description 20
- 230000006698 induction Effects 0.000 claims abstract description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 229910052786 argon Inorganic materials 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 244000137852 Petrea volubilis Species 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a preparation method of a bimetal composite material, in particular to a preparation method of a copper eutectic high-entropy alloy composite cast ingot, which comprises the following steps: preparing a eutectic high-entropy alloy cast ingot; cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible; placing the graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating, wherein the preheating temperature is 350-450 ℃; heating pure copper in a vacuum induction furnace, and introducing argon after the pure copper is melted; casting the copper melt onto the eutectic high-entropy alloy, cooling in a furnace for 30min, and taking out the obtained composite ingot for air cooling. The invention has simple process, easy realization, low cost and small pollution, the prepared composite material has the excellent performances of copper and eutectic high-entropy alloy, different service conditions can be met, good metallurgical bonding is realized based on a solid-liquid mechanism, the interface bonding strength is higher than that of a pure copper side, and the part manufactured by the composite material can be used in the industries of aerospace, weapon manufacturing industry, mechanical manufacturing and the like.
Description
Technical Field
The invention relates to a preparation method of a bimetal composite material, in particular to a preparation method of a copper eutectic high-entropy alloy composite cast ingot.
Background
With the rapid development of the current society and science technology, single and traditional metal materials cannot meet the requirements of people on various performances, and the metal materials with different performances are combined through a certain process, so that the obtained novel composite material can fully exert the advantages of each material, and common preparation methods include a rolling method, an explosive welding method, a smelting method and the like. The eutectic high-entropy alloy has the characteristics of high strength, high hardness, high-temperature creep resistance, high-temperature oxidation resistance, corrosion resistance, good casting fluidity, good plasticity, good processability and the like. Copper has excellent corrosion resistance, antifriction property, ductility, electric conductivity and heat conductivity. At present, the eutectic high-entropy alloy is prepared and used independently, and no method for preparing the copper/eutectic high-entropy alloy composite material with copper and high-entropy alloy properties simultaneously after pure Cu is combined with the eutectic high-entropy alloy exists, so that the invention provides a method for preparing the copper eutectic high-entropy alloy composite material.
The invention comprises the following steps:
the invention aims to provide a preparation method of a copper eutectic high-entropy alloy composite ingot for solving the problems, and solves the problems in the background art.
In order to solve the problems, the invention provides a technical scheme that:
a preparation method of a copper eutectic high-entropy alloy composite ingot comprises the following steps:
s1, preparing a eutectic high-entropy alloy cast ingot;
s2, cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible;
s3, placing the graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating;
s4, heating pure copper in a vacuum induction furnace, and introducing argon after melting the pure copper;
s5, pouring the copper melt onto the eutectic high-entropy alloy, cooling in a furnace for 30min, taking out the obtained composite ingot, and then taking out for air cooling.
Preferably, the main elements of the eutectic high-entropy alloy cast ingot prepared in the step S1 are Al, co, cr, fe and N i.
Preferably, the preparation method of the eutectic high-entropy alloy ingot in the step S1 comprises the following steps:
a1, proportioning the pure metals A l, co, cr, fe and N i according to the weight percentages of 8.5%, 18.5% g, 16.4%, 17.6% and 38.8%;
a2, placing the prepared raw materials into a graphite crucible of a vacuum induction furnace, uniformly mixing and melting, and casting into an A l CoCrFeN i2.1 eutectic high-entropy alloy cast ingot.
Preferably, the dimensions of the eutectic high-entropy alloy sheet cut in the step S2 are Φ42mm×82mm.
Preferably, the preheating temperature of the eutectic high-entropy alloy in the step S3 is 350-450 ℃, and before preheating, the surface of the eutectic high-entropy alloy sheet is polished by sand paper and cleaned by ultrasonic waves.
Preferably, the amount of copper melt casting in the step S5 is 650g.
Preferably, the casting temperature of the copper melt in the step S5 is 1150-1250 ℃ and the vacuum degree during casting is less than 10Pa.
The beneficial effects of the invention are as follows: the preparation method of the copper eutectic high-entropy alloy composite ingot provided by the invention has the advantages of simple process, easiness in realization, low cost and small pollution, the composite material prepared based on a solid-liquid combination mechanism realizes good metallurgical combination, the interface combination strength is higher than that of pure copper, the composite material has the excellent performances of copper and eutectic high-entropy alloy, different service conditions can be met, and the manufactured parts can be used in the industries of aerospace, weapon manufacturing industry, mechanical manufacturing and the like.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a microstructure diagram of a Cu/EHEA composite ingot casting interface at different casting temperatures;
FIG. 2 is a drawing of a Cu/EHEA multi-layer ingot tensile sample before and after stretch breaking;
FIG. 3 shows the tensile strength of Cu/EHEA multi-layer ingots at different casting temperatures.
The specific embodiment is as follows:
as shown in fig. 1-3, the present embodiment adopts the following technical scheme:
a preparation method of a copper eutectic high-entropy alloy composite ingot comprises the following steps:
s1, preparing a eutectic high-entropy alloy cast ingot;
s2, cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible;
s3, placing the graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating;
s4, heating pure copper in a vacuum induction furnace, and introducing argon after melting the pure copper;
s5, pouring the copper melt onto the eutectic high-entropy alloy, cooling in a furnace for 30min, taking out the obtained composite ingot, and then taking out for air cooling.
The main elements of the eutectic high-entropy alloy cast ingot prepared in the step S1 are A l, co, cr, fe and N i.
The preparation method of the eutectic high-entropy alloy cast ingot in the step S1 comprises the following steps:
a1, proportioning the pure metals A l, co, cr, fe and N i according to the weight percentages of 8.5%, 18.5% g, 16.4%, 17.6% and 38.8%;
a2, placing the prepared raw materials into a graphite crucible of a vacuum induction furnace, uniformly mixing and melting, and casting into an A l CoCrFeN i2.1 eutectic high-entropy alloy cast ingot.
Wherein, the dimension of the cut eutectic high-entropy alloy sheet in the step S2 is phi 42mm multiplied by 82mm.
Wherein, the preheating temperature of the eutectic high-entropy alloy in the step S3 is 350-450 ℃, and the surface of the eutectic high-entropy alloy sheet is polished by sand paper before preheating and is cleaned by ultrasonic waves.
Wherein the amount of copper melt casting in the step S5 is 650g.
Wherein the casting temperature of the copper melt in the step S5 is 1150-1250 ℃, and the vacuum degree during casting is less than 10Pa.
Example 1:
the embodiment provides a preparation method of a copper eutectic high-entropy alloy composite ingot, which comprises the following steps:
s1, preparing a eutectic high-entropy alloy cast ingot: the main elements of the prepared eutectic high-entropy alloy cast ingot are Al, co, cr, fe and N i, and the preparation method of the eutectic high-entropy alloy cast ingot comprises the following steps: proportioning the pure metals Al, co, cr, fe, N i according to the weight percentages of 8.5%, 18.5% g, 16.4%, 17.6% and 38.8%; placing the prepared raw materials into a graphite crucible of a vacuum induction furnace, uniformly mixing and melting, and pouring into an Al CoCrFeN i2.1 eutectic high-entropy alloy cast ingot;
s2, cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible; the size of the cut eutectic high-entropy alloy sheet is phi 42mm multiplied by 82mm;
s3, polishing the surface of the eutectic high-entropy alloy sheet by using sand paper, then cleaning by using ultrasonic waves to remove surface oxides, and then placing a graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating at the preheating temperature of 350-450 ℃; in the embodiment, the preheating temperature is 400 ℃, the preheating can reduce the chilling effect of the eutectic high-entropy alloy sheet on copper liquid, and the diffusion distance of elements at the interface is increased, so that the metallurgical combination of pure copper and the eutectic high-entropy alloy is facilitated;
s4, heating pure copper in a vacuum induction furnace, and introducing argon after melting the pure copper;
s5, casting the copper melt onto the eutectic high-entropy alloy, wherein the casting temperature of the melt is 1150 ℃, the vacuum degree is below 10Pa during casting, the casting quantity of the copper melt is controlled to be 650g, cooling is carried out in a furnace for 30min, and then taking out the obtained composite cast ingot for air cooling.
The preparation method provided by the embodiment can obtain a copper/eutectic high-entropy alloy composite cast ingot with the B2 phase and copper miscibility depth of 7.9 mu m at the interface; the tensile strength of the composite ingot is 151.4MPa, the breaking position of the sample is on one side of pure copper, and the interface is perfect, which indicates that the interface bonding strength is higher than that of pure copper, and the copper and the eutectic high-entropy alloy form firm metallurgical bonding.
Example 2:
the embodiment provides a preparation method of a copper eutectic high-entropy alloy composite ingot, which comprises the following steps:
s1, preparing a eutectic high-entropy alloy cast ingot: the main elements of the prepared eutectic high-entropy alloy cast ingot are Al, co, cr, fe and N i, and the preparation method of the eutectic high-entropy alloy cast ingot comprises the following steps: proportioning the pure metals Al, co, cr, fe, N i according to the weight percentages of 8.5%, 18.5% g, 16.4%, 17.6% and 38.8%; placing the prepared raw materials into a graphite crucible of a vacuum induction furnace, uniformly mixing and melting, and pouring into an Al CoCrFeN i2.1 eutectic high-entropy alloy cast ingot;
s2, cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible; the size of the cut eutectic high-entropy alloy sheet is phi 42mm multiplied by 82mm;
s3, polishing the surface of the eutectic high-entropy alloy sheet by using sand paper, then cleaning by using ultrasonic waves to remove surface oxides, and then placing a graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating at the preheating temperature of 350-450 ℃; in the embodiment, the preheating temperature is 400 ℃, the preheating can reduce the chilling effect of the eutectic high-entropy alloy sheet on copper liquid, and the diffusion distance of elements at the interface is increased, so that the metallurgical combination of pure copper and the eutectic high-entropy alloy is facilitated;
s4, heating pure copper in a vacuum induction furnace, and introducing argon after melting the pure copper;
s5, casting copper melt onto the eutectic high-entropy alloy, wherein the casting temperature of the melt is 1200 ℃, the vacuum degree is below 10Pa during casting, the casting amount of the copper melt is 650g, cooling in a furnace for 30min, and taking out the obtained composite cast ingot for air cooling.
The preparation method provided by the embodiment can obtain the copper/eutectic high-entropy alloy composite cast ingot with the miscibility depth of the B2 phase and copper at the interface of 21.7 mu m. The tensile strength of the composite ingot is 150.2MPa, the breaking position of the sample is on one side of pure copper, and the interface is perfect, which indicates that the interface bonding strength is higher than that of pure copper, and the copper and the eutectic high-entropy alloy form firm metallurgical bonding.
Example 3:
the embodiment provides a preparation method of a copper eutectic high-entropy alloy composite ingot, which comprises the following steps:
s1, preparing a eutectic high-entropy alloy cast ingot: the main elements of the prepared eutectic high-entropy alloy cast ingot are Al, co, cr, fe and N i, and the preparation method of the eutectic high-entropy alloy cast ingot comprises the following steps: proportioning the pure metals Al, co, cr, fe, N i according to the weight percentages of 8.5%, 18.5% g, 16.4%, 17.6% and 38.8%; placing the prepared raw materials into a graphite crucible of a vacuum induction furnace, uniformly mixing and melting, and pouring into an Al CoCrFeN i2.1 eutectic high-entropy alloy cast ingot;
s2, cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible; the size of the cut eutectic high-entropy alloy sheet is phi 42mm multiplied by 82mm;
s3, polishing the surface of the eutectic high-entropy alloy sheet by using sand paper, then cleaning by using ultrasonic waves to remove surface oxides, and then placing a graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating at the preheating temperature of 350-450 ℃; in the embodiment, the preheating temperature is 400 ℃, the preheating can reduce the chilling effect of the eutectic high-entropy alloy sheet on copper liquid, and the diffusion distance of elements at the interface is increased, so that the metallurgical combination of pure copper and the eutectic high-entropy alloy is facilitated;
s4, heating pure copper in a vacuum induction furnace, and introducing argon after melting the pure copper;
s5, casting copper melt onto the eutectic high-entropy alloy, wherein the casting temperature of the melt is 1250 ℃, the vacuum degree is below 10Pa during casting, the casting amount of the copper melt is 650g, cooling in a furnace for 30min, and taking out the obtained composite cast ingot for air cooling.
The copper/eutectic high-entropy alloy composite cast ingot with the B2 phase and copper miscibility depth of 28.4 mu m at the interface can be obtained according to the operation. The tensile strength of the composite ingot is 148.8MPa, the breaking position of the sample is on one side of pure copper, and the interface is perfect, which indicates that the interface bonding strength is higher than that of pure copper, and the copper and the eutectic high-entropy alloy form firm metallurgical bonding.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The preparation method of the copper eutectic high-entropy alloy composite ingot is characterized by comprising the following steps of:
s1, preparing a eutectic high-entropy alloy cast ingot;
s2, cutting the eutectic high-entropy alloy ingot into eutectic high-entropy alloy sheets by using a linear cutting method, and then placing the eutectic high-entropy alloy sheets into a graphite crucible;
s3, placing the graphite crucible with the eutectic high-entropy alloy sheet into a vacuum induction furnace for preheating;
s4, heating pure copper in a vacuum induction furnace, and introducing argon after melting the pure copper;
s5, pouring the copper melt onto the eutectic high-entropy alloy, cooling in a furnace for 30min, taking out the obtained composite ingot, and then taking out for air cooling.
2. The method for preparing a copper eutectic high-entropy alloy composite ingot according to claim 1, wherein the main elements of the eutectic high-entropy alloy ingot prepared in the step S1 are Al, co, cr, fe and Ni.
3. The method for preparing the copper eutectic high-entropy alloy composite ingot according to claim 1, wherein the method for preparing the eutectic high-entropy alloy ingot in the step S1 is as follows:
a1, proportioning the pure metal Al, co, cr, fe, ni according to the weight percentages of 8.5%, 18.5% g, 16.4%, 17.6% and 38.8%;
a2, placing the prepared raw materials into a graphite crucible of a vacuum induction furnace, uniformly mixing and melting, and casting into AlCoCrFeNi2.1 eutectic high-entropy alloy cast ingots.
4. The method for preparing a copper eutectic high-entropy alloy composite ingot according to claim 1, wherein the size of the eutectic high-entropy alloy sheet cut in the step S2 is Φ42mm×82mm.
5. The method for preparing the copper eutectic high-entropy alloy composite ingot according to claim 1, wherein the preheating temperature of the eutectic high-entropy alloy in the step S3 is 350-450 ℃, and the surface of the eutectic high-entropy alloy sheet is polished by sand paper before preheating and is cleaned by ultrasonic waves.
6. The method for producing a copper eutectic high-entropy alloy composite ingot according to claim 1, wherein the amount of copper melt casting in step S5 is 650g.
7. The method for preparing a copper eutectic high-entropy alloy composite ingot according to claim 1, wherein the casting temperature of the copper melt in the step S5 is 1150-1250 ℃, and the vacuum degree during casting is less than 10Pa.
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| CN202311309893.3A CN117259729A (en) | 2023-10-11 | 2023-10-11 | Preparation method of copper eutectic high-entropy alloy composite ingot |
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