CN114427068A - Copper-based amorphous alloy and preparation method thereof - Google Patents
Copper-based amorphous alloy and preparation method thereof Download PDFInfo
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- CN114427068A CN114427068A CN202210080346.1A CN202210080346A CN114427068A CN 114427068 A CN114427068 A CN 114427068A CN 202210080346 A CN202210080346 A CN 202210080346A CN 114427068 A CN114427068 A CN 114427068A
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- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 47
- 239000010949 copper Substances 0.000 title claims abstract description 47
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 42
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000004512 die casting Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 24
- 239000000956 alloy Substances 0.000 abstract description 24
- 238000003723 Smelting Methods 0.000 abstract description 11
- 230000009477 glass transition Effects 0.000 abstract description 3
- 238000012994 industrial processing Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000007496 glass forming Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/001—Amorphous alloys with Cu as the major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
-
- 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
- C22C1/11—Making amorphous alloys
Abstract
The invention belongs to the technical field of amorphous alloys, and particularly relates to a copper-based amorphous alloy and a preparation method thereof. The copper-based amorphous alloy comprises the following components in atomic percentage: cu: 47-53; zr: 40-44; and Al: 6-9. The invention changes the raw material components and adopts a multi-time and short-time smelting mode to prepare the copper-based amorphous alloy; and controlling the die-casting temperature and the die-casting speed so that the temperature during final forming is close to the glass transition temperature to form amorphous alloy, the amorphous degree of the prepared amorphous alloy is more than 80%, and the size of the copper-based amorphous plate is more suitable for industrial processing compared with that of a conventional bar, and can be used in the fields of precise conductive components, integrated circuits and the like.
Description
Technical Field
The invention belongs to the technical field of amorphous alloys, and particularly relates to a copper-based amorphous alloy and a preparation method thereof.
Background
The amorphous alloy is solidified by super-quenching, atoms are not arranged in order to be crystallized when the alloy is solidified, the obtained solid alloy is in a long-range disordered structure, molecules (or atoms and ions) forming the alloy are not in a spatially regular periodicity, and crystal grains and crystal boundaries of the crystalline alloy do not exist.
The Cu-based amorphous alloy is a new amorphous system developed in recent years, has larger glass forming capacity, has higher tensile breaking strength than that of a crystal, can reach 2000-2400 MPa, has certain plasticity, has leading strength compared with Zr-based and Pd-based bulk amorphous alloys, and can be used as an ultrahigh-strength structural material. In addition, the cost of the main elements is far lower than that of Zr and Ti, so that the research on the Cu-based bulk amorphous alloy with high glass forming capability has important significance in engineering.
Disclosure of Invention
The invention provides a copper-based amorphous alloy and a preparation method thereof.
In order to solve the technical problem, the invention provides a copper-based amorphous alloy which comprises the following components in atomic percentage: cu: 47-53; zr: 40-44; and Al: 6-9.
In another aspect, the invention further provides a preparation method of the copper-based amorphous alloy, which comprises the following steps: mixing the raw materials of the copper-based amorphous alloy, performing arc melting, and performing vacuum die-casting to obtain the copper-based amorphous alloy.
The method has the beneficial effects that the copper-based amorphous alloy is prepared by changing the components of the raw materials and simultaneously adopting a multi-time and short-time smelting mode; and controlling the die-casting temperature and the die-casting speed so that the temperature during final forming is close to the glass transition temperature to form amorphous alloy, the amorphous degree of the prepared amorphous alloy is more than 80%, and the size of the copper-based amorphous plate is more suitable for industrial processing compared with that of a conventional bar, and can be used in the fields of precise conductive components, integrated circuits and the like.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an XRD pattern of an amorphous alloy sheet obtained in example 1 of the present invention;
FIG. 2 is an XRD pattern of an amorphous alloy sheet obtained in example 2 of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The components of the existing copper-based amorphous alloy usually contain Be or Y and other elements, wherein the Be element is toxic, and the Y element is a rare earth element, so that the cost is high, and the application of the copper-based amorphous alloy is limited.
The invention provides a copper-based amorphous alloy which comprises the following components in atomic percentage: cu: 47-53; zr: 40-44; and Al: 6-9.
Specifically, the copper-based amorphous alloy only contains three common elements of Cu, Zr and Al in component proportion, is non-toxic and rich in minerals, and has low cost; the components are simple, so that the copper-based alloy has wider application, such as the medical field.
Wherein, optionally, the amorphous degree of the copper-based amorphous alloy is not less than 80%.
Optionally, the copper-based amorphous alloy is an amorphous alloy plate, and the size of the amorphous alloy plate is 20 × 120 × 3 mm.
In another aspect, the present application further provides a method for preparing the copper-based amorphous alloy, which includes the following steps: mixing the raw materials of the copper-based amorphous alloy, performing arc melting, and performing vacuum die-casting to obtain the copper-based amorphous alloy.
Optionally, the specific process of the arc melting is as follows: under the vacuum condition, protective gas is filled, the current is 250-350A, the single melting time is 4-5 min, the melting times are 3-4 times, and the cooling time is 10-20 min.
Optionally, the vacuum degree of the arc melting is 6 × 10-3Pa; the protective gas is argon.
Optionally, the vacuum die casting process includes: under the vacuum condition, the induction power is 1-3 KW, the heating time is 8-10 min, the die-casting temperature is 700-750 ℃, and the die-casting speed is 600-700 mm/s.
Optionally, the vacuum degree of vacuum die casting is 2-10-2Pa。
Specifically, the method adopts a multi-time short-time smelting mode to prepare the copper-based amorphous alloy; simultaneously controlling the die-casting temperature and the die-casting speed so as to enable the temperature during final forming to be close to the glass transition temperature; and this application adopts water-cooling copper mould cooling, and cooling rate is bigger, and the size that forms amorphous alloy is bigger.
Example 1
Preparing alloy raw materials of 600g according to chemical components of the alloy, namely Cu48.5%, Zr43.5% and Al 8%, and carrying out vacuum melting on pure metals Cu, Al and Zr by adopting a vacuum arc melting furnace, wherein the vacuum degree is 6.0 multiplied by 10-3And Pa, adopting argon protection, selecting 260A current, smelting for 4 times, smelting for 4min in a single time, cooling for 15min, and taking out the alloy ingot.
Placing the alloy cast ingot in a vacuum die casting machine, wherein the selection process comprises the following steps: vacuum degree of 2X 10-2Pa, induction power of 2KW, heating timeAnd (3) carrying out die casting at the speed of 600mm/s after the raw materials are molten and the temperature reaches about 700 ℃ for 8 min.
The amorphous degree of the prepared amorphous alloy plate is 83 percent.
Example 2
Preparing 400g of alloy raw materials according to chemical components of the alloy, namely Cu48.5%, Zr43.5% and Al 8%, and carrying out vacuum melting on pure metals Cu, Al and Zr by adopting a vacuum arc melting furnace, wherein the vacuum degree is 6.0 multiplied by 10-3And Pa, adopting argon protection, selecting current of 250A, smelting for 4 times, smelting for 5min in a single time, cooling for 15min, and taking out an alloy ingot.
Placing the alloy cast ingot in a vacuum die casting machine, wherein the selection process comprises the following steps: vacuum degree of 2X 10-2Pa, induction power of 1.6KW, heating time of 9min, and die-casting at a speed of 650mm/s when the raw materials are molten and the temperature reaches about 730 ℃.
The amorphous degree of the prepared amorphous alloy plate is 84%.
Example 3
Preparing 600g of alloy raw materials according to chemical components of the alloy, namely Cu 48%, Zr 44% and Al 8%, and carrying out vacuum melting on pure metals Cu, Al and Zr by adopting a vacuum arc melting furnace, wherein the vacuum degree is 6.0 multiplied by 10-3And Pa, adopting argon protection, selecting current at 340A, smelting for 3 times, smelting for 4min in a single time, cooling for 20min, and taking out the alloy ingot.
Placing the alloy cast ingot in a vacuum die casting machine, wherein the selection process comprises the following steps: vacuum degree of 2X 10-2Pa, induction power of 3KW, heating time of 8min, and when the raw materials are melted and the temperature reaches about 700 ℃, die-casting at a speed of 700 mm/s.
Example 4
Preparing 600g of alloy raw materials according to chemical components of the alloy, namely Cu 53%, Zr 40% and Al 7%, and carrying out vacuum melting on pure metals Cu, Al and Zr by adopting a vacuum arc melting furnace, wherein the vacuum degree is 6.0 multiplied by 10-3And Pa, adopting argon protection, selecting current 280A, smelting for 4 times, smelting for 5min in a single time, cooling for 10min, and taking out an alloy ingot.
Placing the alloy cast ingot in a vacuum die casting machine, and selectingThe using process comprises the following steps: vacuum degree of 2X 10-2Pa, induction power of 1KW, heating time of 8min, and die-casting at a speed of 600mm/s when the raw materials are molten and the temperature reaches about 700 ℃.
In conclusion, the chemical components of the copper-based amorphous alloy prepared by the invention are mainly Cu, Zr and Al, so that the copper-based amorphous alloy is low in cost, safe and pollution-free; compared with the conventional amorphous bar, the amorphous plate prepared by the invention has larger size and wider processing applicability; the amorphous degree of the amorphous plate prepared by the method is not less than 80%.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The copper-based amorphous alloy is characterized by comprising the following components in atomic percentage:
Cu：47～53；
zr: 40-44; and
Al：6～9。
2. the copper-based amorphous alloy according to claim 1,
the amorphous degree of the copper-based amorphous alloy is not lower than 80%.
3. The copper-based amorphous alloy according to claim 1,
the copper-based amorphous alloy is an amorphous alloy plate, and the size of the copper-based amorphous alloy plate is 20 multiplied by 120 multiplied by 3 mm.
4. The preparation method of the copper-based amorphous alloy is characterized by comprising the following steps of:
the copper-based amorphous alloy according to claim 1, which is obtained by mixing the respective raw materials, arc-melting, and vacuum die-casting.
5. The method according to claim 4,
the specific process of the electric arc melting is as follows: under the vacuum condition, protective gas is filled, the current is 250-350A, the single melting time is 4-5 min, the melting times are 3-4 times, and the cooling time is 10-20 min.
6. The method according to claim 5,
the vacuum degree of the electric arc melting is 6 multiplied by 10-3Pa；
The protective gas is argon.
7. The method according to claim 4,
the vacuum die-casting process comprises the following steps: under the vacuum condition, the induction power is 1-3 KW, the heating time is 8-10 min, the die-casting temperature is 700-750 ℃, and the die-casting speed is 600-700 mm/s.
8. The method according to claim 7,
the vacuum degree of the vacuum die casting is 2-10-2Pa。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210080346.1A CN114427068A (en) | 2022-01-24 | 2022-01-24 | Copper-based amorphous alloy and preparation method thereof |
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| CN202210080346.1A CN114427068A (en) | 2022-01-24 | 2022-01-24 | Copper-based amorphous alloy and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115961221A (en) * | 2022-12-08 | 2023-04-14 | 大连理工大学 | Block amorphous alloy shaped charge liner and preparation method thereof |
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