CN111434794A - Aluminum alloy material and preparation method and application thereof - Google Patents
Aluminum alloy material and preparation method and application thereof Download PDFInfo
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- CN111434794A CN111434794A CN201910036208.1A CN201910036208A CN111434794A CN 111434794 A CN111434794 A CN 111434794A CN 201910036208 A CN201910036208 A CN 201910036208A CN 111434794 A CN111434794 A CN 111434794A
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- aluminum
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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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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
Abstract
The invention relates to an aluminum alloy material and a preparation method and application thereof. A preparation method of the aluminum alloy material comprises the following steps: melting the aluminum ore, and then casting to obtain an aluminum blank; homogenizing the aluminum blank at 500-560 ℃; cold rolling the homogenized aluminum blank at 20-30 ℃; and annealing the cold-rolled aluminum blank at the temperature of 350-500 ℃ to obtain the aluminum alloy material. The aluminum alloy material has various flower-shaped patterns after being subjected to corrosion treatment, has strong artistic impression, also has certain fashionability and attractive appearance.
Description
Technical Field
The invention relates to the technical field of materials, in particular to an aluminum alloy material and a preparation method and application thereof.
Background
With the increasing development of science and technology, 3C electronic products such as mobile phones, watches, computers and the like have penetrated into the public life and become an indispensable part of the daily life of people, and people pay more and more attention to the appearance texture of the electronic products while pursuing functions.
Aluminum alloy is the most used material for manufacturing 3C electronic products so far, and has become a green environmental-friendly structural material in the 21 st century because the aluminum alloy is easily recycled. However, the appearance of the traditional aluminum alloy material is uniform and cannot meet the increasing appearance requirements of people.
Disclosure of Invention
Based on the above, there is a need for a method for preparing an aluminum alloy material having a plurality of patterns with a flower shape after being subjected to corrosion treatment.
In addition, an aluminum alloy material and application thereof are also provided.
A preparation method of the aluminum alloy material comprises the following steps:
Melting the aluminum ore, and then casting to obtain an aluminum blank;
Homogenizing the aluminum blank at 500-560 ℃;
Cold rolling the homogenized aluminum blank at the temperature of 20-30 ℃;
And annealing the cold-rolled aluminum blank at 350-500 ℃ to obtain the aluminum alloy material.
The preparation method of the aluminum alloy material melts the aluminum ore and carries out casting treatment to obtain an aluminum blank; and then carrying out homogenization treatment, cold rolling treatment and annealing treatment on the aluminum blank in sequence to obtain the aluminum alloy material. The aluminum alloy material has various flower-shaped patterns after being subjected to corrosion treatment, has strong artistic impression, also has certain fashionability and attractive appearance.
In one embodiment, the time of the homogenization treatment is 11h to 12 h.
In one embodiment, the time of the annealing treatment is 40min to 50 min.
In one embodiment, before the step of casting the molten aluminum, a step of standing the molten aluminum is further included.
In one embodiment, after the step of subjecting the molten aluminum to the standing treatment and before the step of casting the molten aluminum, the method further comprises a step of degassing the molten aluminum.
In one embodiment, after the step of degassing the aluminum water and before the step of casting the aluminum water, a step of filtering the aluminum water is further included.
In one embodiment, the casting temperature is 230 ℃ to 290 ℃.
In one embodiment, the melting temperature is above 600 ℃.
The aluminum alloy material prepared by the preparation method of the aluminum alloy material.
The aluminum alloy material prepared by the preparation method of the aluminum alloy material is applied to preparing electronic products.
Drawings
FIG. 1 is an external view of the aluminum alloy material obtained in example 1 after corrosion treatment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The method for preparing an aluminum alloy material according to an embodiment includes the steps of:
Step S110: and melting the aluminum ore to obtain molten aluminum.
Specifically, the melting temperature is 600 ℃ or higher, so that the aluminum ore is melted to form molten aluminum.
Specifically, aluminum ore is available from Shandong Innovative metals, Inc.
Step S120: and casting the molten aluminum to obtain an aluminum blank.
Specifically, the casting temperature is 230 ℃ to 290 ℃.
The method further includes a step of subjecting the molten aluminum to a standing treatment before the step of casting the molten aluminum.
After the step of standing the molten aluminum and before the step of casting the molten aluminum, the method further comprises the step of degassing the molten aluminum to remove air in the molten aluminum and avoid the bad phenomena of sand holes and the like during the forming of the aluminum blank.
After the step of degassing the aluminum water and before the step of casting the aluminum water, the method further comprises the step of filtering the aluminum water to filter impurities in the aluminum water, so as to ensure the quality of the aluminum billet.
Step S130: homogenizing the aluminum blank at 500-560 ℃.
Specifically, the time for the homogenization treatment is 11 to 12 hours.
Wherein, the homogenization treatment has the following functions:
1) The internal structure and performance of the aluminum alloy material are changed, so that the internal crystal structure is improved;
2) The mechanical property of the aluminum blank is fully improved, certain plasticity is ensured, the tensile strength and hardness of the aluminum alloy material are improved, and the cutting processability of the alloy is improved;
3) In the manufacturing process of the aluminum blank, the homogenization treatment can eliminate the internal stress caused by the low-temperature rapid molding of the aluminum blank;
4) The size and the structure of the aluminum blank are stabilized, and the phase change caused by high temperature is prevented and eliminated, so that the aluminum blank generates the phenomenon of volume expansion;
5) In the casting process of the aluminum blank, because the cooling speed is high, solidified metal chemical elements are not diffused in time, so that the distribution is not uniform, segregation is generated, the homogenization treatment can eliminate the segregation and needle-shaped structures, and the structure and mechanical property of the aluminum alloy material are improved.
Step S140: and cold rolling the homogenized aluminum blank at the temperature of 20-30 ℃.
The cold rolling treatment can plastically deform the aluminum blank, change the internal crystal structure of the original material, and prepare the aluminum alloy material for subsequent heat treatment forming, wherein the aluminum blank is in a thermodynamically unstable state.
Step S150: and annealing the cold-rolled aluminum blank at the temperature of 350-500 ℃ to obtain the aluminum alloy material.
Specifically, the annealing treatment time is 40-50 min, so that the aluminum alloy material is crystallized for the second time, coarse crystals are generated and are uniformly diffused, and the manufacturing of the crystal art aluminum alloy material is completed.
In the annealing process, the aluminum alloy material is changed in three stages of recovery, recrystallization and grain growth, and the structure and the performance of the aluminum alloy material are changed so as to improve the performance of the aluminum alloy material. Wherein, the recovery is an early stage of the structural property change of the cold deformation metal during annealing, and refers to a stage of the substructure and the property change generated before new undistorted crystal grains appear; recrystallization refers to a process in which distortion-free equiaxed new grains gradually replace deformed grains; the grain growth refers to the phenomenon that after recrystallization is finished, grains continue to grow and are swallowed along with the grains.
The aluminum alloy material prepared by the preparation method of the aluminum alloy material. The aluminum alloy material has the advantages of attractive appearance, light weight, high strength and high ductility.
The aluminum alloy material prepared by the preparation method of the aluminum alloy material is applied to preparing electronic products. Specifically, the electronic product is a 3C electronic product, such as a mobile phone, a computer, a watch, and the like.
The preparation method of the aluminum alloy material has the following advantages:
1) The preparation method of the aluminum alloy material melts the aluminum ore and carries out casting treatment to obtain an aluminum blank; and then carrying out homogenization treatment, cold rolling treatment and annealing treatment on the aluminum blank in sequence to obtain the aluminum alloy material. The aluminum alloy material has various flower-shaped patterns after being subjected to corrosion treatment, has strong artistic impression, also has certain fashionability and attractive appearance. In addition, the density of the aluminum alloy material is tested to be 2.75kg/m 3The following shows that the yield strength is more than 210MPa, the tensile strength is more than 235MPa, the hardness is more than 78HV, the elongation is 12 percent, and the aluminum alloy meets the quality requirement of the aluminum alloy. Therefore, the aluminum alloy material prepared by the preparation method of the aluminum alloy material has beautiful appearance Lighter weight, higher strength and better ductility.
2) The preparation method of the aluminum alloy material has the advantages of high efficiency and low cost, and the prepared aluminum alloy material has a very wide application prospect and is an ideal raw material for processing 3C metal appearance pieces.
3) The aluminum alloy material prepared by the preparation method of the aluminum alloy material has the appearance effects of ceramics and glass, and has the characteristics of easiness in processing, small deformation, good stability, corrosion resistance, wide application and the like.
The following are specific examples:
Example 1
The preparation steps of the aluminum alloy material of the embodiment are as follows:
(1) Melting aluminum ore at 600 ℃ to obtain molten aluminum, wherein the aluminum ore is purchased from Shandong Innovative metals, Co;
(2) Standing the aluminum water, degassing, and filtering the aluminum water;
(3) And casting the filtered molten aluminum to obtain an aluminum blank, wherein the casting temperature is 260 ℃.
(4) Homogenizing the aluminum blank for 11.5h at 530 ℃;
(5) Performing cold rolling, stretching and plastic deformation on the homogenized aluminum blank by 3 percent at the temperature of 25 ℃;
(6) And annealing the cold-rolled aluminum blank at 450 ℃ for 45min to obtain the aluminum alloy material.
Example 2
The preparation steps of the aluminum alloy material of the embodiment are as follows:
(1) Melting aluminum ore at 600 ℃ to obtain molten aluminum, wherein the aluminum ore is purchased from Shandong Innovative metals, Co;
(2) Standing the aluminum water, degassing, and filtering the aluminum water;
(3) And casting the filtered molten aluminum to obtain an aluminum blank, wherein the casting temperature is 230 ℃.
(4) Homogenizing the aluminum blank for 11 hours at 500 ℃;
(5) Performing cold rolling, stretching and plastic deformation on the homogenized aluminum blank by 5 percent at the temperature of 20 ℃;
(6) And annealing the cold-rolled aluminum blank at 350 ℃ for 40min to obtain the aluminum alloy material.
Example 3
The preparation steps of the aluminum alloy material of the embodiment are as follows:
(1) Melting aluminum ore at 620 ℃ to obtain molten aluminum, wherein the aluminum ore is purchased from Shandong Innovative metals, Co;
(2) Standing the aluminum water, degassing, and filtering the aluminum water;
(3) And casting the filtered molten aluminum to obtain an aluminum blank, wherein the casting temperature is 290 ℃.
(4) Homogenizing the aluminum blank for 12 hours at 560 ℃;
(5) Carrying out cold rolling, stretching and plastic deformation treatment on the homogenized aluminum blank by 7 percent at the temperature of 30 ℃;
(6) And annealing the cold-rolled aluminum blank for 50min at 500 ℃ to obtain the aluminum alloy material.
Comparative example 1
The aluminum alloy material of the comparative example is prepared according to a general process, and comprises the following steps:
(1) Melting aluminum ore at 600 deg.C to obtain molten aluminum
(2) Standing the aluminum water, degassing, and filtering the aluminum water;
(3) And casting the filtered molten aluminum to obtain an aluminum blank, wherein the casting temperature is 250 ℃.
(4) And (3) completely annealing the aluminum blank at 540 ℃ for 12h to obtain the aluminum alloy material.
And (3) testing:
1) the aluminum alloy materials prepared in examples 1 to 3 and comparative example 1 were immersed in a NaOH solution at a concentration of 50 g/L for 6 minutes at 60 ℃ for corrosion treatment, and the pattern grain size of the surface of the aluminum alloy material was measured by a vernier caliper, and the results are shown in table 1, wherein the aluminum alloy material prepared in example 1 has an appearance after corrosion treatment as shown in fig. 1.
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Grain size of the pattern | 7mm | 3mm | 2mm | Without pattern |
As can be seen from Table 1, the aluminum alloy materials obtained in examples 1-3 have larger crystal grains in a shape of broken flower after being subjected to corrosion treatment, while the aluminum alloy material obtained in comparative example 1 has no pattern in a shape of broken flower after being subjected to corrosion treatment. It is shown that comparative example 1 did not undergo plastic deformation treatment of cold rolling, and thus no flower-like pattern was shown on the surface after corrosion, whereas examples 1 to 3 had a large size of flower-like grains due to a small amount of cold rolling deformation and a high annealing temperature after cold rolling.
As can be seen from FIG. 1, the surface of the aluminum alloy material prepared in example 1 after being corroded has various flower-shaped patterns, so that the aluminum alloy material has a strong artistic impression, certain fashionability and attractive appearance.
2) The aluminum alloy materials obtained in examples 1 to 3 and comparative example 1 were subjected to density, yield strength, tensile strength, hardness and elongation tests, and the results are shown in table 2. The density test adopts a density tester to measure, the yield strength, the tensile strength and the elongation are measured by a standard tensile testing machine, and the hardness is measured by a Vickers hardness tester.
TABLE 2 test results of the aluminum alloy materials obtained in examples 1 to 3 and comparative example 1
As can be seen from Table 2, the aluminum alloy materials obtained in examples 1 to 3 had a density of 2.75kg/m 3The following shows that the yield strength is more than 210MPa, the tensile strength is more than 235MPa, the hardness is more than 78HV, the elongation is 12 percent, and the aluminum alloy meets the quality requirement of the aluminum alloy.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The preparation method of the aluminum alloy material is characterized by comprising the following steps:
Melting the aluminum ore, and then casting to obtain an aluminum blank;
Homogenizing the aluminum blank at 500-560 ℃;
Cold rolling the homogenized aluminum blank at the temperature of 20-30 ℃;
And annealing the cold-rolled aluminum blank at 350-500 ℃ to obtain the aluminum alloy material.
2. The method for producing an aluminum alloy material according to claim 1, wherein the time for the homogenization treatment is 11 to 12 hours.
3. The method for producing an aluminum alloy material according to claim 1, wherein the time of the annealing treatment is 40 to 50 min.
4. The method of producing an aluminum alloy material according to claim 1, further comprising a step of subjecting the molten aluminum to a standing treatment before the step of casting the molten aluminum.
5. The method of producing an aluminum alloy material according to claim 4, further comprising a step of degassing the molten aluminum after the step of subjecting the molten aluminum to the standing treatment and before the step of casting the molten aluminum.
6. The method of producing an aluminum alloy material according to claim 5, further comprising a step of filtering the molten aluminum after the step of degassing the molten aluminum and before the step of casting the molten aluminum.
7. The method for producing an aluminum alloy material according to claim 1, wherein the casting temperature is 230 ℃ to 290 ℃.
8. The method for producing an aluminum alloy material according to claim 1, wherein the melting temperature is 600 ℃ or higher.
9. An aluminum alloy material produced by the method for producing an aluminum alloy material according to any one of claims 1 to 8.
10. The use of the aluminum alloy material produced by the method of producing an aluminum alloy material according to any one of claims 1 to 8 for producing an electronic product.
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Citations (5)
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|---|---|---|---|---|
| CN1171452A (en) * | 1996-07-18 | 1998-01-28 | 吉林工业大学 | Material for casting sliding bearing of Al-Pb alloy and technology and apparatus thereof |
| JP2000080453A (en) * | 1998-09-03 | 2000-03-21 | Mitsubishi Alum Co Ltd | Production of aluminum alloy foil excellent in strength and formability |
| US6238497B1 (en) * | 1998-07-23 | 2001-05-29 | Alcan International Limited | High thermal conductivity aluminum fin alloys |
| CN103184372A (en) * | 2013-04-01 | 2013-07-03 | 北京工业大学 | Electrochemical corrosion-resistant reinforced Al-Zr-Er alloy material and preparation method thereof |
| CN103834885A (en) * | 2014-03-14 | 2014-06-04 | 重庆大学 | Thermal treatment method for improving plasticity of aluminum alloy plate material |
-
2019
- 2019-01-15 CN CN201910036208.1A patent/CN111434794A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171452A (en) * | 1996-07-18 | 1998-01-28 | 吉林工业大学 | Material for casting sliding bearing of Al-Pb alloy and technology and apparatus thereof |
| US6238497B1 (en) * | 1998-07-23 | 2001-05-29 | Alcan International Limited | High thermal conductivity aluminum fin alloys |
| JP2000080453A (en) * | 1998-09-03 | 2000-03-21 | Mitsubishi Alum Co Ltd | Production of aluminum alloy foil excellent in strength and formability |
| CN103184372A (en) * | 2013-04-01 | 2013-07-03 | 北京工业大学 | Electrochemical corrosion-resistant reinforced Al-Zr-Er alloy material and preparation method thereof |
| CN103834885A (en) * | 2014-03-14 | 2014-06-04 | 重庆大学 | Thermal treatment method for improving plasticity of aluminum alloy plate material |
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