CN111549253B - Rare earth copper-iron alloy, preparation method and application - Google Patents
Rare earth copper-iron alloy, preparation method and application Download PDFInfo
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- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- 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
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- 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
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Abstract
The invention provides a rare earth copper-iron alloy, a preparation method and application thereof, belonging to the technical field of non-ferrous metal materials. The rare earth copper-iron alloy provided by the invention comprises 0.25-0.5% of rare earth elements, 8-20% of Fe and the balance of Cu in percentage by mass. According to the invention, rare earth elements are added into the Cu-Fe alloy, so that the effects of purifying the alloy, refining crystal grains and promoting Fe phase precipitation can be achieved, and the conductivity of the Cu-Fe alloy is improved; the content of iron element in the alloy is high, the consumption of copper is low, and the production cost is reduced; the dosage of the rare earth element is more, and the influence of the iron element on the conductivity of the alloy can be reduced. The results of the examples show that the conductivity of the rare earth copper-iron alloy provided by the invention reaches more than 56% IACS, the tensile strength reaches more than 768MPa, and the elongation reaches more than 2.9%.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal materials, in particular to a rare earth copper-iron alloy, a preparation method and application thereof.
Background
The copper alloy has good electric and heat conducting properties, good corrosion resistance, convenient casting, easy plastic processing, good weldability and other process properties, so the copper alloy becomes an important material in the industry at present and is widely applied to the departments of electronics, electromechanics, aviation, aerospace and the like. With the increasing requirements of high-intensity magnetic field magnet coils, large-scale integrated circuit lead frames and high-speed electric locomotive frame air conductors on the strength and the electric conductivity of conductive materials, how to greatly improve the strength of the materials on the premise of sacrificing the electric conductivity and the heat conductivity as little as possible becomes a research hotspot. The Cu-Fe alloy has attracted people's attention because of its characteristics such as good comprehensive properties, low production cost and environmental protection. However, when the content of the second phase component Fe in the Cu-Fe alloy is higher, the addition of Fe atoms inevitably greatly reduces the conductivity of the copper matrix, and how to reduce the solid solubility of Fe in the copper matrix becomes a key technical problem for improving the conductivity of the alloy.
The current methods for improving the conductivity of Cu-Fe alloy in industry mainly comprise two methods:
1. the preparation method of the Cu-Fe alloy is changed, for example, the patent CN110923693A describes that the Cu-Fe alloy is prepared by adopting a cold spraying process, the melting process is not generated in the preparation process, the phenomenon that Fe atoms are dissolved in Cu in a solid mode is not generated, the purity of a copper matrix is ensured, and the electrical conductivity of the alloy is improved remarkably. However, the preparation method is mainly used for 3D printing and forming of parts with complex shapes, and compared with the traditional casting method, the preparation method is low in yield and cannot be used for large-scale production.
2. Adjusting the element components in the Cu-Fe alloy, as described in the 'influence of boron and cerium on the microstructure and performance of the Cu-Fe-P alloy' (China rare earth academic newspaper, Shanghai university Metal-based composite material national center laboratory, Ludeping), adding a P element into the Cu-Fe alloy to form the Cu-Fe-P alloy, and then adding a rare earth element and a boron element to play roles in purifying materials and improving the conductivity of the alloy. However, the content of Fe in the Cu-Fe-P alloy is low, generally 0.1-2.3%, the content of Fe in the Cu-Fe alloy is 8-20%, and the reduction of the content of Fe causes the increase of the content of Cu, so that the cost is increased, the mechanical property of the alloy is greatly deviated, meanwhile, the addition amount of rare earth elements in the Cu-Fe-P alloy cannot exceed 0.2 wt%, the improvement effect on the conductivity of the alloy is low, and the requirements of the current society on the strength and the conductivity of the alloy material are difficult to meet. Patent CN1417357A describes that the content of rare earth elements in copper alloy can be increased to 0.3%, but Zn and Ti elements need to be added to balance the overall performance of the alloy, so as to improve the conductivity of the copper alloy.
Therefore, the technical problem to be solved is to provide the Cu-Fe alloy with low cost, good conductivity and mechanical property.
Disclosure of Invention
The invention aims to provide a rare earth copper-iron alloy, a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a rare earth copper-iron alloy which comprises, by mass, 0.25-0.5% of rare earth elements, 8-20% of Fe and the balance of Cu.
Preferably, the alloy comprises 0.3-0.45% of rare earth elements, 10-18% of Fe and the balance of Cu in percentage by mass.
Preferably, the alloy comprises 0.4% of rare earth elements, 15% of Fe and the balance of Cu in percentage by mass.
Preferably, the rare earth element is one or more of Ce, La and Y.
The invention also provides a preparation method of the rare earth copper-iron alloy in the technical scheme, which comprises the following steps:
(1) smelting a copper source, an iron source and a rare earth raw material, and then casting to obtain an alloy ingot;
(2) and (2) sequentially carrying out hot rolling, solution treatment, cold rolling, aging treatment and final rolling on the alloy ingot obtained in the step (1) to obtain the rare earth copper-iron alloy.
Preferably, the hot rolling temperature in the step (2) is 850-950 ℃, and the total deformation amount of the hot rolling is 20-50%.
Preferably, the heat preservation temperature of the solution treatment in the step (2) is 900-1100 ℃, and the heat preservation time of the solution treatment is 10-200 min.
Preferably, the total deformation amount of the cold rolling in the step (2) is 60-90%.
Preferably, the heat preservation temperature of the aging treatment in the step (2) is 400-600 ℃, and the heat preservation time of the aging treatment is 1-24 h.
The invention also provides the application of the rare earth copper-iron alloy in the technical scheme or the rare earth copper-iron alloy prepared by the preparation method in the technical scheme in the fields of electronics, electromechanics, aviation and aerospace.
The invention provides a rare earth copper-iron alloy which comprises, by mass, 0.25-0.5% of rare earth elements, 8-20% of Fe and the balance of Cu. According to the invention, the Cu-Fe alloy is used as a matrix, a certain amount of rare earth elements are used for purifying impurities in the alloy, so that lattice distortion caused by solid-solution impurities is reduced, elastic scattering of a lattice on electrons is reduced, the conductivity of the material is improved, the precipitation of Fe phase is promoted, the solid solubility of Fe atoms in the copper matrix is reduced, the lattice distortion of the copper matrix is reduced, and the conductivity of the Cu-Fe alloy is further improved; in addition, the rare earth can refine crystal grains and a Fe phase dendritic crystal structure, promote the uniform distribution of the Fe phase in a matrix, and is beneficial to improving the mechanical property of the material; the alloy has high content of iron element, can reduce the consumption of copper and reduce the production cost; the rare earth elements are used in a large amount, so that the influence of the iron elements on the conductivity of copper can be reduced, and the conductivity of the alloy can be improved. The results of the examples show that the conductivity of the rare earth copper-iron alloy provided by the invention reaches more than 56% IACS, the tensile strength reaches more than 768MPa, and the elongation reaches more than 2.9%.
Drawings
FIG. 1 is a flow chart of a preparation process of a rare earth-copper-iron alloy provided in embodiments 1 to 4 of the present invention.
Detailed Description
The invention provides a rare earth copper-iron alloy which comprises, by mass, 0.25-0.5% of rare earth elements, 8-20% of Fe and the balance of Cu.
According to the mass percentage, the rare earth copper-iron alloy provided by the invention comprises 0.25-0.5% of rare earth elements, preferably 0.3-0.45%, and more preferably 0.4%. In the invention, the rare earth element is preferably one or more of Ce, La and Y, and more preferably Ce.
According to the mass percentage, the rare earth copper-iron alloy provided by the invention comprises 8-20% of Fe, preferably 10-18%, and more preferably 14%.
The mass percentages of the iron element and the rare earth element in the copper alloy are controlled within the range, the iron element and the copper element can form a Cu-Fe alloy matrix, a certain amount of rare earth element is utilized to purify impurities in the alloy, lattice distortion caused by solid solution impurities is reduced, elastic scattering of a lattice on electrons is reduced, the conductivity of the material is improved, the precipitation of Fe phase is promoted, the solid solubility of Fe atoms in the copper matrix is reduced, the lattice distortion of the copper matrix is reduced, and the conductivity of the Cu-Fe alloy is further improved; in addition, the rare earth can refine crystal grains and a Fe phase dendritic crystal structure, promote the uniform distribution of the Fe phase in a matrix, and is beneficial to improving the mechanical property of the material; the alloy has high content of iron element, can reduce the consumption of copper and reduce the production cost; the rare earth elements are used in a large amount, so that the influence of the iron elements on the conductivity of copper can be reduced, and the conductivity of the alloy can be improved.
The invention also provides a preparation method of the rare earth copper-iron alloy in the technical scheme, which comprises the following steps:
(1) smelting a copper source, an iron source and a rare earth raw material, and then casting to obtain an alloy ingot;
(2) and (2) sequentially carrying out hot rolling, solution treatment, cold rolling, aging treatment and final rolling on the alloy ingot obtained in the step (1) to obtain the rare earth copper-iron alloy.
The method comprises the steps of smelting a copper source, an iron source and rare earth raw materials, and then casting to obtain an alloy ingot. The smelting equipment is not particularly limited in the present invention, and smelting equipment known to those skilled in the art can be used. In the invention, the smelting equipment is preferably a medium-frequency electromagnetic induction furnace.
In the present invention, the copper source is preferably electrolytic copper; the purity of the electrolytic copper is preferably not less than 99.9%, more preferably 99.9%.
In the present invention, the iron source is preferably pure iron; the purity of the pure iron is preferably equal to or more than 99.9%, and more preferably 99.9%.
In the present invention, the rare earth raw material is preferably a rare earth master alloy, more preferably a copper rare earth master alloy; the content of rare earth elements in the copper-rare earth intermediate alloy is preferably 3-7 wt%, and more preferably 5 wt%.
The invention uses electrolytic copper and pure iron as raw materials, can reduce the content of impurities in the rare earth copper-iron alloy, uses the rare earth intermediate alloy as the raw material, does not introduce impurity elements, and simultaneously the intermediate alloy can promote the rare earth elements to be uniformly distributed in the alloy, thereby achieving the effects of purifying the alloy, refining crystal grains and promoting the precipitation of Fe phase, and further improving the conductivity and mechanical property of the rare earth copper-iron alloy.
In the present invention, the sources of the copper source, the iron source, and the rare earth source are not particularly limited, and commercially available products known to those skilled in the art may be used.
In the invention, the smelting of the copper source, the iron source and the rare earth raw material is preferably as follows: firstly, carrying out first smelting on electrolytic copper and pure iron to obtain a copper-iron alloy solution; and then adding a copper rare earth intermediate alloy into the copper-iron alloy solution for second smelting to obtain a rare earth copper-iron alloy solution.
According to the invention, electrolytic copper and pure iron are preferably subjected to first smelting to obtain the copper-iron alloy solution. In the invention, the temperature of the first smelting is preferably 1250-1400 ℃, and more preferably 1280-1350 ℃; the first melting time is preferably 10-30 min, and more preferably 20 min. The method carries out first smelting on the electrolytic copper and the pure iron, has longer smelting time, and can ensure that the copper element and the iron element are uniformly mixed.
After the copper-iron alloy solution is obtained, the copper-rare earth intermediate alloy is preferably added into the copper-iron alloy solution for second smelting to obtain the rare earth-copper-iron alloy solution. In the invention, the temperature of the second smelting is preferably 1250-1400 ℃, and more preferably 1280-1350 ℃; the second melting time is preferably 2-5 min, and more preferably 3 min. According to the invention, the copper rare earth intermediate alloy is added into the copper iron alloy solution for second smelting, so that the smelting time can be reduced, and the burning loss of rare earth elements can be reduced.
The specific process of the casting is not particularly limited in the present invention, and a casting process known to those skilled in the art may be used. In the invention, the casting temperature is preferably 1250-1400 ℃, more preferably 1280-1350 ℃ and most preferably 1290-1310 ℃. The casting mold is not particularly limited in the present invention, and a mold known to those skilled in the art may be used. In the present invention, the casting mold is preferably a graphite mold.
After the casting is finished, the invention preferably carries out peeling treatment on the cast product to obtain an alloy cast ingot. The operation of the peeling treatment is not particularly limited in the present invention, and the technical scheme of the peeling treatment known to those skilled in the art may be adopted. According to the invention, the alloy ingot is peeled, so that an oxide layer on the surface of the alloy ingot can be removed, and the influence of impurity elements on the performance of the alloy is prevented.
After the alloy ingot is obtained, the rare earth copper-iron alloy is obtained by sequentially carrying out hot rolling, solution treatment, cold rolling, aging treatment and final rolling on the alloy ingot.
In the present invention, the hot rolling is preferably performed after the alloy ingot is homogenized at a hot rolling temperature. In the present invention, the time for the homogenization treatment is preferably 1 to 5 hours, and more preferably 3 hours. The invention can make the chemical components in the alloy more uniform by carrying out homogenization treatment, and lays a foundation for the subsequent hot rolling treatment.
In the invention, the temperature of the hot rolling is preferably 850-950 ℃, and more preferably 900 ℃; the total deformation amount of the hot rolling is preferably 20 to 50%, and more preferably 30 to 40%. By carrying out the hot rolling process, the Fe phase dendrite in the alloy can be crushed to be converted into a fine granular structure, thereby being beneficial to the structure refinement and the formation of a micro-enhanced phase in the subsequent deformation process.
The hot rolling equipment of the present invention is not particularly limited, and equipment known to those skilled in the art may be used. In the present invention, the hot rolling equipment is preferably a hot rolling mill.
After the hot rolling is finished, the invention preferably directly heats the hot rolled product to the holding temperature of the solution treatment without cooling.
In the invention, the heat preservation temperature of the solution treatment is preferably 900-1100 ℃, more preferably 920-1000 ℃, and most preferably 950 ℃; the heat preservation time of the solution treatment is preferably 10-200 min, more preferably 50-190 min, and most preferably 180 min. By carrying out solid solution treatment, the invention can fully dissolve the Fe phase in the Cu matrix, enhance the plasticity of the alloy and be beneficial to subsequent cold rolling and aging treatment.
The apparatus for the solution treatment in the present invention is not particularly limited, and an apparatus known to those skilled in the art may be used. In the present invention, the solution treatment facility is preferably a heat treatment furnace.
In the present invention, the solution treatment is preferably performed by quenching. The specific operation of the quenching cooling is not particularly limited in the present invention, and a quenching cooling process known to those skilled in the art may be employed.
In the present invention, the total deformation amount of the cold rolling is preferably 60 to 90%, and more preferably 80%. The cold rolling process is not particularly limited in the present invention, and a cold rolling process known to those skilled in the art may be used. The invention can make Fe phase in the alloy gradually thin and form directional arrangement fiber reinforced phase through cold rolling process.
In the invention, the heat preservation temperature of the aging treatment is preferably 400-600 ℃, and more preferably 500 ℃; the heat preservation time of the aging treatment is preferably 1-24 hours, more preferably 5-20 hours, and more preferably 10-15 hours. The invention can regulate and control the comprehensive performance of the final deformation alloy through aging treatment so as to obtain the high-strength high-conductivity Cu-Fe alloy.
After the aging treatment is finished, the aging treatment product is preferably directly subjected to finish rolling at the heat preservation temperature of the aging treatment without cooling. In the invention, the total deformation amount of the finish rolling is preferably 30-60%, and more preferably 50%. The process of the finish rolling is not particularly limited in the present invention, and a rolling process known to those skilled in the art may be used. The invention can regulate and control the grain size and the crystalline phase structure in the alloy by controlling the temperature and the total deformation of the final rolling, so that the alloy has excellent mechanical properties.
After the finish rolling is finished, the invention preferably cools the finish rolled product to obtain the rare earth copper-iron alloy. In the present invention, the end temperature of the cooling is preferably room temperature. The cooling method is not particularly limited in the present invention, and an alloy cooling process known to those skilled in the art may be used.
In the embodiment of the present invention, the process of the preparation method of the rare earth copper-iron alloy is preferably as shown in fig. 1, and the preparation and the batching of the raw materials are performed first, the prepared raw materials are sequentially smelted and cast to obtain an alloy ingot, and then the alloy ingot is sequentially subjected to hot rolling solution treatment, cold rolling, aging treatment and finish rolling to obtain the rare earth copper-iron alloy.
The preparation method provided by the invention is a fusion casting method, has simple preparation process and low cost, and is suitable for industrial large-scale production, so that the rare earth copper-iron alloy can be widely applied to the fields of high-intensity magnetic field magnet coils, large-scale integrated circuit lead frames, high-speed electric locomotive air conductors and the like.
The invention also provides the application of the rare earth copper-iron alloy in the technical scheme or the rare earth copper-iron alloy prepared by the preparation method in the technical scheme in the fields of electronics, electromechanics, aviation and aerospace. In the present invention, the fields of electronics, electromechanics, aviation and aerospace are preferably high-field magnet coils, large-scale integrated circuit lead frames and high-speed electric locomotive air wires.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Example 1
The rare earth copper-iron alloy comprises, by mass, 0.05% of Ce, 14% of Fe and 85.95% of Cu.
The preparation method comprises the following steps:
(1) preparing materials: preparing electrolytic copper with the mass percentage of 85%, pure iron with the mass percentage of 14% and copper rare earth intermediate alloy (Cu-5 wt% Ce) with the mass percentage of 1% into alloy components;
(2) smelting: firstly, mixing electrolytic copper and pure iron, then putting the mixture into a medium-frequency electromagnetic induction furnace, smelting the mixture according to a conventional Cu-Fe system material smelting process for 20min after melting, then adding a copper rare earth intermediate alloy, smelting for 3min, casting the mixture into a graphite mold within the range of 1300 ℃, and peeling to obtain an alloy ingot;
(3) hot rolling: heating the alloy ingot to 900 ℃ for homogenization treatment, preserving heat for 3h, and then carrying out hot rolling with total deformation of 50% at 900 ℃.
(4) Solution treatment: putting the hot-rolled product into a heat treatment furnace, preserving heat for 180min at 950 ℃, and then quenching and cooling;
(5) cold rolling: rolling the product after the solution treatment with the total deformation of 80%;
(6) aging treatment: heating the cold-rolled product to 500 ℃, and preserving heat for 1 h;
(7) and (3) finish rolling: and rolling the product subjected to aging treatment at 500 ℃ with the total deformation of 60% to obtain the rare earth copper-iron alloy.
Example 2
The rare earth copper-iron alloy comprises, by mass, 0.1% of Ce, 14% of Fe and 85.9% of Cu.
According to the mass percentage, the raw materials of the rare earth copper-iron alloy comprise 14 percent of pure iron, 84 percent of electrolytic copper and 2 percent of copper-rare earth intermediate alloy (Cu-5wt percent Ce).
The preparation method is the same as that of example 1.
Example 3
The rare earth copper-iron alloy comprises, by mass, 0.2% of Ce, 14% of Fe and 85.8% of Cu.
According to the mass percentage, the raw materials of the rare earth copper-iron alloy comprise 14 percent of pure iron, 82 percent of electrolytic copper and 4 percent of copper-rare earth intermediate alloy (Cu-5wt percent Ce).
The preparation method is the same as that of example 1.
Example 4
The rare earth copper-iron alloy comprises, by mass, 0.2% of Ce, 14% of Fe and 85.8% of Cu.
According to the mass percentage, the raw materials of the rare earth copper-iron alloy comprise 14 percent of pure iron, 82 percent of electrolytic copper and 4 percent of copper-rare earth intermediate alloy (Cu-5wt percent Ce).
The temperature of the aging treatment in the step (6) of the preparation method is 450 ℃, and the rest steps are the same as the example 3.
Comparative example 1
The composition of the copper-iron alloy is 14% of Fe and 86% of Cu in percentage by mass.
The preparation method comprises the following steps:
(1) preparing materials: preparing 86% of electrolytic copper and 14% of pure iron by mass into alloy components;
(2) smelting: firstly, mixing electrolytic copper and pure iron, then putting the mixture into a medium-frequency electromagnetic induction furnace, smelting according to a conventional Cu-Fe system material smelting process for 20min after smelting, casting the mixture into a graphite mold within the range of 1300 ℃, and peeling to obtain an alloy ingot;
(3) hot rolling: heating the alloy cast ingot to a range of 900 ℃ for homogenization treatment, preserving heat for 3 hours, and then rolling with the total deformation of 50%.
(4) Solution treatment: putting the hot-rolled product into a heat treatment furnace, preserving heat for 90min at 950 ℃, and then quenching and cooling;
(5) cold rolling: rolling the product after the solution treatment with the total deformation of 80%;
(6) aging treatment: heating the cold-rolled product to 500 ℃, and preserving heat for 1 h;
(7) and (3) finish rolling: and rolling the product subjected to aging treatment at 500 ℃ with the total deformation of 60% to obtain the copper-iron alloy.
The rare earth copper-iron alloys prepared in examples 1 to 4 and the copper-iron alloy prepared in comparative example 1 were subjected to performance testing, and the results are shown in table 1.
TABLE 1 Performance parameters of the rare earth copper-iron alloys prepared in examples 1-4 and the copper-iron alloy prepared in comparative example 1
| Alloy composition | Tensile strength (MPa) | Elongation (%) | Electrical conductivity (% IACS) |
| Example 1 | 778 | 3.0 | 58 |
| Example 2 | 800 | 3.2 | 62 |
| Example 3 | 825 | 3.1 | 60 |
| Example 4 | 768 | 2.9 | 56 |
| Comparative example 1 | 760 | 2.8 | 55 |
As can be seen from table 1, the rare earth copper-iron alloys prepared in examples 1 to 4 have excellent mechanical properties and electrical conductivity compared with the copper-iron alloy prepared in comparative example 1, the electrical conductivity of the rare earth copper-iron alloy reaches more than 56% IACS, the tensile strength reaches more than 768MPa, the elongation reaches more than 2.9%, and the rare earth copper-iron alloy can be widely applied to high-intensity magnetic field magnet coils, large-scale integrated circuit lead frames, high-speed electric locomotive overhead conductors and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A rare earth copper-iron alloy comprises, by mass, 0.25-0.5% of rare earth elements, 14-20% of Fe and the balance of Cu;
the rare earth element is one or more of Ce, La and Y;
the preparation method of the rare earth copper-iron alloy comprises the following steps:
(1) smelting a copper source, an iron source and a rare earth raw material, and then sequentially casting and peeling to obtain an alloy ingot;
(2) carrying out homogenization treatment, hot rolling, solution treatment, cold rolling, aging treatment, final rolling and cooling on the alloy ingot obtained in the step (1) in sequence to obtain rare earth copper-iron alloy;
the heat preservation temperature of the aging treatment in the step (2) is 400-600 ℃, and the heat preservation time of the aging treatment is 1-24 hours;
the temperature of the finish rolling is the heat preservation temperature of the aging treatment, and the total deformation amount of the finish rolling is 30-60%.
2. The rare earth-copper-iron alloy according to claim 1, wherein the rare earth element is 0.3 to 0.45% by mass, Fe is 14 to 18% by mass, and Cu is the balance.
3. The rare earth-copper-iron alloy according to claim 1, wherein the rare earth element is 0.4% by mass, the Fe is 15% by mass, and the balance is Cu.
4. A method of producing a rare earth-copper-iron alloy as claimed in any one of claims 1 to 3, comprising the steps of:
(1) smelting a copper source, an iron source and a rare earth raw material, and then sequentially casting and peeling to obtain an alloy ingot;
(2) carrying out homogenization treatment, hot rolling, solution treatment, cold rolling, aging treatment, final rolling and cooling on the alloy ingot obtained in the step (1) in sequence to obtain rare earth copper-iron alloy;
the heat preservation temperature of the aging treatment in the step (2) is 400-600 ℃, and the heat preservation time of the aging treatment is 1-24 hours;
the temperature of the finish rolling is the heat preservation temperature of the aging treatment, and the total deformation amount of the finish rolling is 30-60%.
5. The manufacturing method according to claim 4, wherein the temperature of the hot rolling in the step (2) is 850 to 950 ℃, and the total deformation amount of the hot rolling is 20 to 50%.
6. The production method according to claim 4, wherein the temperature for the solution treatment in the step (2) is 900 to 1100 ℃ and the time for the solution treatment is 10 to 200 min.
7. The manufacturing method according to claim 4, wherein the total deformation amount of the cold rolling in the step (2) is 60-90%.
8. Use of the rare earth copper-iron alloy according to any one of claims 1 to 3 or the rare earth copper-iron alloy prepared by the preparation method according to any one of claims 4 to 7 in the fields of electronics, electromechanics, aviation and aerospace.
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| CN115305383B (en) * | 2022-07-30 | 2023-05-12 | 江西省科学院应用物理研究所 | High-strength and high-conductivity Cu-Co alloy material containing mixed rare earth and preparation method thereof |
| CN116024453A (en) * | 2022-12-30 | 2023-04-28 | 酒泉职业技术学院(甘肃广播电视大学酒泉市分校) | Rare earth microalloyed CuFe in-situ composite material formula and preparation process thereof |
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