CN114182120A - Wrought aluminum-iron alloy and preparation method thereof - Google Patents
Wrought aluminum-iron alloy and preparation method thereof Download PDFInfo
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- CN114182120A CN114182120A CN202111520226.0A CN202111520226A CN114182120A CN 114182120 A CN114182120 A CN 114182120A CN 202111520226 A CN202111520226 A CN 202111520226A CN 114182120 A CN114182120 A CN 114182120A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- 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
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Abstract
The invention provides a wrought aluminum-iron alloy and a preparation method thereof, belonging to the technical field of aluminum-iron alloy preparation. According to the preparation method of the wrought aluminum-iron alloy, provided by the invention, the aluminum-iron alloy ingot is prepared by adopting a semi-continuous casting process, other alloy elements are not required to be added, the aluminum-iron alloy can obtain a remarkably refined alloy microstructure, the mechanical property of the wrought aluminum-iron alloy is greatly improved by combining a hot extrusion molding process, and a foundation is laid for the industrial application of the aluminum-iron alloy; the alloy is prepared by adopting a semi-continuous casting process, the production efficiency is high, and the method is suitable for large-scale low-cost production. The results of the examples show that the wrought aluminum-iron alloy prepared by the preparation method provided by the invention has the tensile strength exceeding 170MPa, the yield strength exceeding 140MPa and the elongation reaching 26.0%.
Description
Technical Field
The invention relates to the technical field of aluminum-iron alloy preparation, in particular to a wrought aluminum-iron alloy and a preparation method thereof.
Background
The aluminum-iron alloy has light weight, good heat resistance, rich raw materials and low price, can partially replace materials such as titanium alloy, conventional heat-resistant aluminum alloy, steel and the like, and greatly reduces the quality and the cost of components, thereby having wide application prospect in the fields of aviation, aerospace, weapons, automobiles and the like. However, because the solid solubility of iron in aluminum is very low, once the solid solubility limit is exceeded, the iron is combined with aluminum and other alloy elements in the cast aluminum alloy to form a coarse needle-shaped or lath-shaped second phase, so that a matrix is severely cracked, and the mechanical properties of the matrix are greatly reduced.
In recent years, researches show that the mechanical property of the alloy can be improved by effectively refining the iron-containing phase and changing the shape of the iron-containing phase through certain measures. These measures can be basically divided into two categories, one is the refinement of the iron-containing phase during liquid forming, including electromagnetic stirring, rapid solidification, addition of alloying elements, etc. However, the alloy prepared by the rapid solidification method has small scale and higher cost; the added alloy elements can refine the iron-containing phase, but the refining effect of the added alloy elements on the iron-containing phase is not obvious, and the tensile strength and the elongation of the alloy are not obviously improved. The other is to refine the iron-containing phase by using the shearing stress in plastic deformation, in particular to severe plastic deformation, such as continuous extrusion, equal channel angular extrusion and high-pressure torsion. Although the iron-containing phase can be refined by severe plastic deformation, the production efficiency is limited, and the product scale is small. Although these measures can refine the iron-containing phase in the alloy, these methods are not suitable for large-scale industrial production, and some of the above measures have strict requirements on process parameters and higher cost.
Therefore, it is required to provide a preparation process of the aluminum-iron alloy, which is simple in process and suitable for large-scale industrial production, and the prepared aluminum-iron alloy has excellent mechanical properties.
Disclosure of Invention
The invention aims to provide a wrought aluminum-iron alloy and a preparation method thereof, the preparation method provided by the invention is simple and suitable for large-scale industrial production, and the prepared wrought aluminum-iron alloy has better mechanical property and can be used as an engineering structural material in the industrial or civil field.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a wrought aluminum-iron alloy, which comprises the following steps:
(1) smelting the raw materials to obtain an alloy melt;
(2) performing semi-continuous casting on the alloy melt obtained in the step (1) to obtain an alloy ingot;
(3) carrying out homogenization heat treatment on the alloy ingot obtained in the step (2) to obtain a heat treatment ingot;
(4) and (4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain the wrought aluminum-iron alloy.
Preferably, the raw materials in step (1) include industrial pure aluminum and aluminum-iron master alloy.
Preferably, the aluminum-iron master alloy is an Al-20 wt.% Fe master alloy.
Preferably, the casting temperature of the semi-continuous casting in the step (2) is 800-835 ℃.
Preferably, the casting speed of the semi-continuous casting in the step (2) is 100-140 mm/min.
Preferably, the semi-continuous casting in the step (2) is hot-top semi-continuous casting.
Preferably, the temperature of the homogenization heat treatment in the step (3) is 550-625 ℃, and the heat preservation time of the homogenization heat treatment is 3-6 h.
Preferably, the temperature of the hot extrusion molding in the step (4) is 440-520 ℃, the extrusion speed of the hot extrusion molding is 0.6-1 mm/s, and the extrusion ratio of the hot extrusion molding is 12-25.0.
Preferably, the wrought aluminium-iron alloy has an iron content of 2-5 wt.%.
The invention provides the wrought aluminum-iron alloy prepared by the preparation method in the technical scheme.
The invention provides a preparation method of a wrought aluminum-iron alloy, which comprises the following steps: (1) smelting the raw materials to obtain an alloy melt; (2) performing semi-continuous casting on the alloy melt obtained in the step (1) to obtain an alloy ingot; (3) carrying out homogenization heat treatment on the alloy ingot obtained in the step (2) to obtain a heat treatment ingot; (4) and (4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain the wrought aluminum-iron alloy. The aluminum-iron alloy ingot is prepared by adopting a semi-continuous casting process, other alloy elements are not required to be added, the aluminum-iron alloy can obtain a remarkably refined alloy microstructure, the mechanical property of the deformed aluminum-iron alloy is greatly improved by combining a hot extrusion molding process, and a foundation is laid for the industrial application of the aluminum-iron alloy; the preparation is carried out by adopting a semi-continuous casting process, the production efficiency is high, and the preparation method is suitable for large-scale low-cost production. The results of the examples show that the wrought aluminum-iron alloy prepared by the preparation method provided by the invention has the tensile strength exceeding 170MPa, the yield strength exceeding 140MPa and the elongation reaching 26.0%.
Drawings
FIG. 1 is a pictorial representation of a wrought aluminum-iron alloy prepared in accordance with the present invention;
FIG. 2 is a microstructure of an edge portion of a semi-continuously cast aluminum-iron alloy prepared in comparative example 1;
FIG. 3 is a microstructure of a middle portion of a semi-continuously cast aluminum-iron alloy prepared in comparative example 1;
FIG. 4 is a scanning electron microscope microstructure of a wrought aluminum-iron alloy prepared in example 1;
FIG. 5 is a transmission electron microscopy microstructure of a wrought aluminum-iron alloy prepared in example 1.
Detailed Description
The invention provides a preparation method of a wrought aluminum-iron alloy, which comprises the following steps:
(1) smelting the raw materials to obtain an alloy melt;
(2) performing semi-continuous casting on the alloy melt obtained in the step (1) to obtain an alloy ingot;
(3) carrying out homogenization heat treatment on the alloy ingot obtained in the step (2) to obtain a heat treatment ingot;
(4) and (4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain the wrought aluminum-iron alloy.
In the invention, the content of iron in the wrought aluminum-iron alloy is preferably 2-5 wt.%, and more preferably 3-4 wt.%. The invention controls the content of iron in the range, can prepare the wrought aluminum-iron alloy and has excellent mechanical property.
The invention obtains alloy melt after smelting raw materials.
In the present invention, the feedstock preferably comprises commercially pure aluminum and an aluminum-iron master alloy, preferably an Al-20 wt.% Fe master alloy. The specific sources of the commercially pure aluminum and aluminum-iron master alloys are not particularly limited in the present invention and may be commercially available products well known to those skilled in the art. The invention adopts industrial pure aluminum and aluminum-iron intermediate alloy as raw materials, can obtain aluminum-iron intermediate alloy with different iron contents by controlling the addition amount of the intermediate alloy, and can reduce the content of impurity elements and further improve the performance of the aluminum-iron alloy.
In the invention, the smelting temperature is preferably 850-880 ℃, more preferably 850-870 ℃, and further preferably 860 ℃; the smelting time is preferably 30-60 min. The invention limits the smelting parameters in the range, and can ensure that the raw materials are completely melted and uniformly mixed.
After the smelting is finished, the invention preferably carries out degassing refining and slagging-off on the smelted alloy liquid in sequence to obtain the alloy liquid. In the invention, the degassing refining mode is preferably to inject nitrogen for 6-8 min. The specific operation of the slag skimming is not specially limited, and the conventional slag skimming process in the field is adopted. The invention can remove impurities in the alloy melt through degassing, refining and slagging-off.
In the invention, the smelting is preferably carried out in a medium frequency induction furnace, and the specific model of the medium frequency induction furnace is not particularly limited by the invention, and the equipment well known to those skilled in the art can be adopted.
After the alloy melt is obtained, the alloy melt is subjected to semi-continuous casting to obtain an alloy ingot.
The invention preferably cools the alloy melt to the casting temperature of the semi-continuous casting, and then carries out the semi-continuous casting. In the present invention, the cooling is preferably water cooling.
In the present invention, the semi-continuous casting is preferably hot-top semi-continuous casting. The invention adopts semi-continuous casting to obviously refine the microscopic structure of the alloy.
In the present invention, the casting is preferably performed after the molten alloy is cooled to form a shell having a predetermined thickness, and the thickness of the shell is not particularly limited in the present invention, and may be determined according to the general technical knowledge of those skilled in the art to satisfy the casting requirement. In the invention, the casting temperature of the semi-continuous casting is preferably 800-835 ℃, and more preferably 810-830 ℃; the casting speed of the semi-continuous casting is preferably 100-140 mm/min, more preferably 110-130 mm/min, and further preferably 120 mm/min; the cooling water amount of the semi-continuous casting is preferably 0.8-1.5L/s. The invention limits the parameters of the semi-continuous casting within the range, and can further refine the microstructure of the alloy.
In the invention, the semi-continuous casting is preferably carried out in a crystallizer, and the diameter of the crystallizer is preferably 80-120 mm. In the present invention, the diameter of the alloy ingot is preferably the same as the diameter of the crystallizer.
After the alloy ingot is obtained, the alloy ingot is subjected to homogenization heat treatment to obtain a heat treatment ingot.
In the invention, the temperature of the homogenization heat treatment is preferably 550-625 ℃, more preferably 560-600 ℃, and further preferably 580-590 ℃; the heat preservation time of the homogenization heat treatment is preferably 3-6 h; the homogenization heat treatment is preferably carried out by natural cooling. According to the invention, the alloy ingot is subjected to homogenization heat treatment, so that the metallurgical quality and the extrusion performance of the alloy ingot can be improved, and the subsequent hot extrusion molding is facilitated.
In the present invention, the homogenization heat treatment is preferably carried out in a box-type resistance furnace, and the specific type of the box-type resistance furnace is not particularly limited in the present invention, and may be implemented by using equipment well known to those skilled in the art.
After the heat treatment cast ingot is obtained, the heat treatment cast ingot is subjected to hot extrusion molding to obtain the wrought aluminum-iron alloy.
In the invention, the temperature of the hot extrusion molding is preferably 440-520 ℃, more preferably 450-500 ℃, and further preferably 470-480 ℃; the extrusion speed of the hot extrusion molding is preferably 0.6-1 mm/s, and more preferably 0.8 mm/s; the extrusion ratio of the hot extrusion molding is preferably 12.0 to 25.0, and more preferably 15.0 to 20.0. The invention limits the parameters of hot extrusion molding within the range, and can further improve the mechanical property of the wrought aluminum-iron alloy.
The aluminum-iron alloy cast ingot is prepared by adopting a semi-continuous casting process, so that the aluminum-iron alloy can obtain a remarkably refined alloy microstructure, the mechanical property of the deformed aluminum-iron alloy is greatly improved by combining a hot extrusion molding process, and a foundation is laid for the industrial application of the aluminum-iron alloy; the preparation is carried out by adopting a semi-continuous casting process, the production efficiency is high, and the preparation method is suitable for large-scale low-cost production.
The invention provides the wrought aluminum-iron alloy prepared by the preparation method in the technical scheme.
The wrought aluminum-iron alloy provided by the invention has the tensile strength exceeding 170MPa, the yield strength exceeding 140MPa and the elongation rate reaching 26%, has excellent mechanical properties, and is expected to be applied to the industrial or civil field as an engineering structure material.
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
A preparation method of a wrought aluminum-iron alloy comprises the following steps:
(1) adding industrial pure aluminum and Al-20 wt.% Fe intermediate alloy into a medium-frequency induction furnace, heating to 870 ℃ for melting, then preserving heat for 30min, then introducing nitrogen for 6min for degassing and refining, and obtaining alloy melt after slagging off;
(2) naturally cooling the alloy melt obtained in the step (1) to 835 ℃, then casting the alloy melt into a crystallizer with the diameter of 80mm, and performing semi-continuous casting after the alloy melt in the crystallizer is cooled to form a blank shell with a certain thickness to obtain an alloy ingot with the diameter of 80 mm; the casting speed of the semi-continuous casting is 120mm/min, and the cooling water amount of the semi-continuous casting is 1L/s;
(3) placing the alloy ingot obtained in the step (2) into a box-type resistance furnace for carrying out homogenization heat treatment to obtain a heat treatment ingot; the temperature of the homogenization heat treatment is 550 ℃; the heat preservation time of the homogenization heat treatment is 6 hours;
(4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain a wrought aluminum-iron alloy; the temperature of the hot extrusion molding is 480 ℃; the extrusion speed of the hot extrusion molding is 0.8 mm/s; the extrusion ratio of the hot extrusion molding is 15.38; the wrought ferroaluminum alloy has an iron content of 3 wt.%.
Example 2
A preparation method of a wrought aluminum-iron alloy comprises the following steps:
(1) adding industrial pure aluminum and Al-20 wt.% Fe intermediate alloy into a medium-frequency induction furnace, heating to 870 ℃ for melting, then preserving heat for 30min, then introducing nitrogen for 8min for degassing and refining, and obtaining alloy melt after slagging off;
(2) naturally cooling the alloy melt obtained in the step (1) to 835 ℃, then casting the alloy melt into a crystallizer with the diameter of 80mm, and performing semi-continuous casting after the alloy melt in the crystallizer is cooled to form a blank shell with a certain thickness to obtain an alloy ingot with the diameter of 80 mm; the casting speed of the semi-continuous casting is 100mm/min, and the cooling water amount of the semi-continuous casting is 1.2L/s;
(3) placing the alloy ingot obtained in the step (2) into a box-type resistance furnace for carrying out homogenization heat treatment to obtain a heat treatment ingot; the temperature of the homogenization heat treatment is 600 ℃; the heat preservation time of the homogenization heat treatment is 4 hours;
(4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain a wrought aluminum-iron alloy; the temperature of the hot extrusion molding is 480 ℃; the extrusion speed of the hot extrusion molding is 0.8 mm/s; the extrusion ratio of the hot extrusion molding is 19.23; the wrought ferroaluminum alloy has an iron content of 3 wt.%.
Example 3
A preparation method of a wrought aluminum-iron alloy comprises the following steps:
(1) adding industrial pure aluminum and Al-20 wt.% Fe intermediate alloy into a medium-frequency induction furnace, heating to 850 ℃ for melting, then preserving heat for 30min, then introducing nitrogen for 6min for degassing and refining, and obtaining alloy melt after slagging off;
(2) naturally cooling the alloy melt obtained in the step (1) to 820 ℃, then casting the alloy melt into a crystallizer with the diameter of 80mm, and performing semi-continuous casting after the alloy melt in the crystallizer is cooled to form a blank shell with a certain thickness to obtain an alloy ingot with the diameter of 80 mm; the casting speed of the semi-continuous casting is 120mm/min, and the cooling water amount of the semi-continuous casting is 1L/s;
(3) placing the alloy ingot obtained in the step (2) into a box-type resistance furnace for carrying out homogenization heat treatment to obtain a heat treatment ingot; the temperature of the homogenization heat treatment is 550 ℃; the heat preservation time of the homogenization heat treatment is 6 hours;
(4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain a wrought aluminum-iron alloy; the temperature of the hot extrusion molding is 520 ℃; the extrusion speed of the hot extrusion molding is 1 mm/s; the extrusion ratio of the hot extrusion molding is 15.38; the wrought ferroaluminum alloy has an iron content of 3 wt.%.
Example 4
A preparation method of a wrought aluminum-iron alloy comprises the following steps:
(1) adding industrial pure aluminum and Al-20 wt.% Fe intermediate alloy into a medium-frequency induction furnace, heating to 850 ℃ for melting, then preserving heat for 30min, then introducing nitrogen for 8min for degassing and refining, and obtaining alloy melt after slagging off;
(2) naturally cooling the alloy melt obtained in the step (1) to 820 ℃, then casting the alloy melt into a crystallizer with the diameter of 80mm, and performing semi-continuous casting after the alloy melt in the crystallizer is cooled to form a blank shell with a certain thickness to obtain an alloy ingot with the diameter of 80 mm; the casting speed of the semi-continuous casting is 140mm/min, and the cooling water amount of the semi-continuous casting is 1.2L/s;
(3) placing the alloy ingot obtained in the step (2) into a box-type resistance furnace for carrying out homogenization heat treatment to obtain a heat treatment ingot; the temperature of the homogenization heat treatment is 625 ℃; the heat preservation time of the homogenization heat treatment is 3 hours;
(4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain a wrought aluminum-iron alloy; the temperature of the hot extrusion molding is 500 ℃; the extrusion speed of the hot extrusion molding is 1 mm/s; the extrusion ratio of the hot extrusion molding is 19.23; the wrought ferroaluminum alloy has an iron content of 3 wt.%.
Comparative example 1
A preparation method of an aluminum-iron alloy comprises the following steps:
(1) adding industrial pure aluminum and Al-20% Fe intermediate alloy into a medium-frequency induction furnace, heating to 850 ℃, and obtaining alloy melt after the industrial pure aluminum and the intermediate alloy are completely melted and the temperature is stable;
(2) naturally cooling the alloy melt obtained in the step (1) to 835 ℃, then casting the alloy melt into a crystallizer with the diameter of 80mm, and performing semi-continuous casting after the alloy melt in the crystallizer is cooled to form a blank shell with a certain thickness to obtain an alloy ingot with the diameter of 80 mm; the casting speed of the semi-continuous casting is 120mm/min, and the cooling water amount of the semi-continuous casting is 1L/s; the wrought ferroaluminum alloy has an iron content of 3 wt.%.
The mechanical properties of the as-cast aluminum-iron alloys prepared in examples and comparative example 1 are shown in table 1:
TABLE 1 mechanical properties of as-cast Al-Fe alloys prepared in examples and comparative example 1
| Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) | |
| Example 1 | 172.93 | 145.53 | 26.0 |
| Example 2 | 180.81 | 147.62 | 24.5 |
| Example 3 | 168.21 | 139.12 | 25.2 |
| Example 4 | 176.71 | 146.82 | 25.8 |
| Comparative example 1 | 102.89 | 67.41 | 6.69 |
As can be seen from Table 1, the mechanical properties of the wrought aluminum-iron alloy prepared by the method are far higher than those of the cast aluminum-iron alloy in the comparative example 1, which shows that the mechanical properties of the aluminum-iron alloy can be greatly improved by adopting the semi-continuous casting process and the hot extrusion molding process.
FIG. 1 is a schematic representation of a wrought aluminum-iron alloy prepared in accordance with the present invention. As can be seen from figure 1, the wrought aluminum-iron alloy prepared by the method has smooth surface and good compactness.
Fig. 2 and 3 are microstructures of the side and middle portions of the semi-continuously cast aluminum-iron alloy prepared in comparative example 1. As can be seen from fig. 2 and 3, the structure of the as-cast aluminum-iron alloy prepared by the semi-continuous casting technique is relatively dense and uniform.
FIG. 4 is a scanning electron microscope microstructure of an wrought aluminum-iron alloy prepared in example 1 of the present invention. As can be seen from FIG. 4, after hot extrusion deformation, the fine iron-containing phase in the alloy is uniformly distributed on the aluminum matrix, and the microstructure of the wrought aluminum-iron alloy prepared by the method is uniform.
FIG. 5 is a transmission electron microscopy microstructure of an wrought aluminum-iron alloy prepared in example 1 of the present invention. As can be seen in fig. 5, equiaxed grains appeared on the aluminum matrix of the alloy after hot extrusion deformation, indicating that the alloy had dynamically recrystallized during the hot extrusion process. After hot extrusion, the structure that fine iron-containing phases are uniformly distributed on the isometric crystal aluminum matrix is beneficial to improving the mechanical property of the alloy.
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 (10)
1. A preparation method of a wrought aluminum-iron alloy comprises the following steps:
(1) smelting the raw materials to obtain an alloy melt;
(2) performing semi-continuous casting on the alloy melt obtained in the step (1) to obtain an alloy ingot;
(3) carrying out homogenization heat treatment on the alloy ingot obtained in the step (2) to obtain a heat treatment ingot;
(4) and (4) carrying out hot extrusion molding on the heat-treated ingot obtained in the step (3) to obtain the wrought aluminum-iron alloy.
2. The method according to claim 1, wherein the raw material in the step (1) comprises industrial pure aluminum and an aluminum-iron master alloy.
3. The method of claim 2, wherein the aluminum-iron master alloy is an Al-20 wt.% Fe master alloy.
4. The production method according to claim 1, wherein the casting temperature of the semi-continuous casting in the step (2) is 800 to 835 ℃.
5. The production method according to claim 1, wherein the casting speed of the semi-continuous casting in the step (2) is 100 to 140 mm/min.
6. The production method according to claim 1, wherein the semi-continuous casting in the step (2) is hot-top semi-continuous casting.
7. The preparation method according to claim 1, wherein the temperature of the homogenization heat treatment in the step (3) is 550 to 625 ℃, and the holding time of the homogenization heat treatment is 3 to 6 hours.
8. The production method according to claim 1, wherein the temperature of the hot extrusion molding in the step (4) is 440 to 520 ℃, the extrusion speed of the hot extrusion molding is 0.6 to 1mm/s, and the extrusion ratio of the hot extrusion molding is 12.0 to 25.0.
9. The method of any one of claims 1 to 8, wherein the wrought aluminium-iron alloy has an iron content of 2 to 5 wt.%.
10. The wrought aluminum-iron alloy prepared by the preparation method of any one of claims 1 to 9.
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| NL2032205A NL2032205B1 (en) | 2021-12-13 | 2022-06-17 | Wrought aluminium-ferro alloy and preparation method thereof |
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| 周振平等: "Fe含量对Al-Fe合金组织和硬度的影响", 《铸造》, no. 6, 12 August 2004 (2004-08-12), pages 456 * |
| 杨荣凯等: "电缆用Al-Fe合金抗压蠕变及力学性能的工艺研究", 《铸造》, no. 10, 10 October 2017 (2017-10-10), pages 1062 * |
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