CN114959388A - Al-Cu-Mg-Ag type motor rotor aluminum alloy and preparation method and application thereof - Google Patents
Al-Cu-Mg-Ag type motor rotor aluminum alloy and preparation method and application thereof Download PDFInfo
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- CN114959388A CN114959388A CN202210403112.6A CN202210403112A CN114959388A CN 114959388 A CN114959388 A CN 114959388A CN 202210403112 A CN202210403112 A CN 202210403112A CN 114959388 A CN114959388 A CN 114959388A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
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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
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22F1/002—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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- 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
- C22F1/057—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 of alloys with copper as the next major constituent
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The application discloses an Al-Cu-Mg-Ag type motor rotor aluminum alloy and a preparation method and application thereof, and belongs to the technical field of new energy automobile motors, wherein the Al-Cu-Mg-Ag type motor rotor aluminum alloy comprises 0.3-1.0 wt% of Cu, 0.1-0.3 wt% of Mg, 0.1-0.3 wt% of Ag0.1-0.3 wt% and the balance of Al. According to the method, the elements added into the cast aluminum alloy and the adding proportion of each element are limited, so that the aluminum alloy has good heat resistance and good high-temperature creep resistance under the condition of ensuring good mechanical properties such as conductivity, tensile strength and the like, and is low in production cost and suitable for industrial popularization.
Description
Technical Field
The application relates to an Al-Cu-Mg-Ag type motor rotor aluminum alloy, and a preparation method and application thereof, and belongs to the technical field of new energy automobile motors.
Background
Because aluminum has the advantages of low density, good electric conduction and heat conduction performance and low price, the aluminum is gradually selected to be applied to manufacturing the motor rotor of the new energy automobile to replace copper materials so as to achieve the aims of cost reduction and light weight. In order to obtain higher efficiency, the aluminum material of the cast aluminum rotor is required to have higher conductivity; in order to realize higher rotating speed, the aluminum material of the cast aluminum rotor is required to have higher strength.
At present, high-purity aluminum is mainly used for a cast aluminum rotor for a new energy automobile, casting processes mainly include high-pressure casting, centrifugal casting and the like, under general conditions, the improvement of the conductivity or mechanical property of cast aluminum alloy can be facilitated by adding other metal elements in a certain range, but the added metal elements in the prior art are high in cost, poor in performance improvement and low in cost performance, and on the other hand, the balance of the conductivity, the mechanical property and other properties is difficult to achieve after the metal elements are added, so that the situations of high conductivity, poor mechanical property, poor heat resistance, low conductivity, good other properties often occur, and various properties are difficult to be in a good range.
Disclosure of Invention
In order to solve the problems, the Al-Cu-Mg-Ag type motor rotor aluminum alloy and the preparation method and application thereof are provided, and the aluminum alloy has good heat resistance, good high-temperature creep resistance and low production cost and is suitable for industrial popularization under the condition of ensuring good mechanical properties such as conductivity, tensile strength and the like by limiting the elements added to the cast aluminum alloy and the addition proportion of each element.
According to one aspect of the application, there is provided an Al-Cu-Mg-Ag type motor rotor aluminum alloy comprising 0.3-1.0 wt% Cu, 0.1-0.3 wt% Mg, 0.1-0.3 wt% Ag, and the balance Al.
Preferably, the Al is high-purity Al, and the purity is more than 99.8%.
Optionally, in the Al-Cu-Mg-Ag alloy, the content ratio of Cu, Mg and Ag is (3-4): (1-2): (1-2).
Optionally, in the Al-Cu-Mg-Ag alloy, the content ratio of Cu, Mg and Ag is 4: 1: 1.
according to another aspect of the application, the preparation method of the Al-Cu-Mg-Ag type motor rotor aluminum alloy comprises the following steps:
(1) placing an aluminum ingot in a smelting furnace, heating to melt the aluminum ingot, firstly adding weighed Cu and Ag components, adding an Mg component after the weighed Cu and Ag components are completely melted, and uniformly stirring;
(2) keeping the temperature at 720-740 ℃, refining, slagging off and standing;
(3) preheating a casting mold, carrying out centrifugal casting, stopping the rotation of casting equipment after the alloy is solidified, and naturally cooling to room temperature;
(4) and (4) carrying out heat treatment on the alloy obtained in the step (3), and obtaining the Al-Cu-Mg-Ag type motor rotor aluminum alloy after heat treatment.
Optionally, the heating temperature in step (1) is 710-750 ℃; the preheating temperature in the step (3) is 710-.
Optionally, the refining method in the step (2) is to rotationally blow gas or add a refining agent accounting for 0.5-1% of the total mass of the melt, and the refining time is 10-30 min.
Optionally, the step (4) of the heat treatment includes the steps of heating the alloy obtained in the step (3) to 550 ℃ for the first time, performing water-cooling quenching after heat preservation, heating to 200 ℃ for the second time, and cooling the alloy to room temperature after heat preservation.
Optionally, the temperature rise rate of the primary temperature rise is 80-120 ℃/h, and the heat preservation time is 6-10 h; the temperature rise rate of the secondary temperature rise is 90-110 ℃/h, and the heat preservation time is 15-20 h.
Optionally, the transfer time of water-cooling quenching is less than 20s, the cooling speed of water-cooling quenching is 25-35 ℃/s, and the cooling speed of air cooling is 2-4 ℃/min.
According to the application, the application of the Al-Cu-Mg-Ag type motor rotor aluminum alloy or the Al-Cu-Mg-Ag type motor rotor aluminum alloy prepared by the preparation method is provided, and the Al-Cu-Mg-Ag type motor rotor aluminum alloy is suitable for a motor rotor of a new energy automobile.
In the present application, "room temperature" means 25 ℃.
Benefits of the present application include, but are not limited to:
1. according to the Al-Cu-Mg-Ag type motor rotor aluminum alloy, the elements added into the cast aluminum alloy and the adding proportion of the elements are limited, so that the aluminum alloy has good heat resistance, good high-temperature creep resistance and low production cost and is suitable for industrial popularization under the condition that the mechanical properties such as conductivity, tensile strength and the like are good.
2. According to the Al-Cu-Mg-Ag type motor rotor aluminum alloy, the content ratio of Cu, Mg and Ag is (3-4) by limiting the specific element proportion in the Al-Cu-Mg-Ag alloy: (1-2): (1-2) formation of S' (Al) mainly in the alloy 2 CuMg) phase and Ω' (Al) 2 Cu) phase, S' (Al) 2 The CuMg) phase contributes to improving the strength and the conductivity, omega' (Al), of the alloy 2 The Cu) phase is beneficial to improving the strength and the heat resistance of the alloy, so that the Al-Cu-Mg-Ag alloy has good mechanical properties such as electrical conductivity, strength and the like and also has good heat resistance.
3. According to the preparation method of the Al-Cu-Mg-Ag type motor rotor aluminum alloy, the oxidation loss of the Mg element can be reduced by limiting the adding sequence of the elements, the heating is limited to be carried out once to a higher temperature by carrying out heat treatment after centrifugal casting, a part of the alloy elements can be promoted to be dissolved in the matrix, and the part of omega' (Al) can be obtained by water-cooling quenching and secondary heating 2 Cu) phase is dispersed and precipitated, the high-temperature stability of the alloy is enhanced, fine phases in the alloy are refined and precipitated through manual work time, and the strength of the alloy is improved, so that the alloy has excellent comprehensive performance.
4. According to the preparation method of the Al-Cu-Mg-Ag type motor rotor aluminum alloy, the porosity of the cast aluminum alloy is low, the mechanical property is good, the conductivity is good, meanwhile, the high-temperature creep resistance is good, the preparation method is simple and easy to operate, and the industrial popularization is easy.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
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 reagents or starting materials used in the present invention can be purchased from conventional sources, and unless otherwise specified, the reagents or starting materials used in the present invention can be used in a conventional manner in the art or in accordance with the product specifications. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention. The preferred methods and materials described in this patent are for illustrative purposes only.
Example 1 preparation of aluminum alloy No. 1
The composition of aluminum alloy No. 1 is as follows: 0.3 wt% of Cu, 0.1 wt% of Mg, 0.1 wt% of Ag and the balance of high-purity Al.
The preparation method of the aluminum alloy 1# comprises the following steps:
(1) placing an aluminum ingot in a smelting furnace, heating to melt the aluminum ingot, firstly adding weighed Cu and Ag components, adding an Mg component after the weighed Cu and Ag components are completely melted, and uniformly stirring;
(2) keeping the temperature at 720 ℃ for refining treatment, slagging off after refining, and standing;
(3) preheating a casting mold, then carrying out centrifugal casting, stopping the rotation of casting equipment after the alloy is solidified, and naturally cooling to room temperature;
(4) and (4) carrying out heat treatment on the alloy obtained in the step (3), and obtaining the aluminum alloy 1# after the heat treatment.
Wherein the heating temperature in the step (1) is 710 ℃; the refining method in the step (2) is to rotationally blow nitrogen, and the refining time is 10 min; the preheating temperature in the step (3) is 710 ℃, the centrifugal rotating speed is 200r/min, and the casting temperature is 715 ℃; standing for 50min in the step (2); the step (4) of heat treatment is that the alloy obtained in the step (3) is heated to 450 ℃ for the first time, water-cooling quenching is carried out after heat preservation, then the temperature is heated to 160 ℃ for the second time, and air cooling is carried out to room temperature after heat preservation; the temperature rise rate of the primary temperature rise is 80 ℃/h, and the heat preservation time is 6 h; the temperature rise rate of the secondary temperature rise is 90 ℃/h, and the heat preservation time is 15 h; the transfer time of water cooling quenching is 15s, the cooling speed of water cooling quenching is 25 ℃/s, and the cooling speed of air cooling is 2 ℃/min.
EXAMPLE 2 preparation of aluminum alloy No. 2
The composition of aluminum alloy 2# is: 1.0 wt% of Cu, 0.3 wt% of Mg, 0.3 wt% of Ag and the balance of high-purity Al.
The preparation method of the aluminum alloy No. 2 comprises the following steps:
(1) placing an aluminum ingot in a smelting furnace, heating to melt the aluminum ingot, firstly adding weighed Cu and Ag components, adding an Mg component after the weighed Cu and Ag components are completely melted, and uniformly stirring;
(2) maintaining the temperature at 740 ℃ for refining treatment, slagging off after refining, and standing;
(3) preheating a casting mold, carrying out centrifugal casting, stopping the rotation of casting equipment after the alloy is solidified, and naturally cooling to room temperature;
(4) and (4) carrying out heat treatment on the alloy obtained in the step (3), and obtaining the aluminum alloy 2# after the heat treatment.
Wherein the heating temperature in the step (1) is 750 ℃; the refining method in the step (2) is to rotationally blow argon, and the refining time is 30 min; the preheating temperature in the step (3) is 740 ℃, the centrifugal rotating speed is 300r/min, and the casting temperature is 730 ℃; standing for 40min in the step (2); the step (4) of heat treatment is that the alloy obtained in the step (3) is heated to 550 ℃ for the first time, water-cooling quenching is carried out after heat preservation, then the temperature is heated to 200 ℃ for the second time, and air cooling is carried out to room temperature after heat preservation; the temperature rise rate of the primary temperature rise is 120 ℃/h, and the heat preservation time is 10 h; the temperature rise rate of the secondary temperature rise is 110 ℃/h, and the heat preservation time is 20 h; the transfer time of water cooling quenching is 18s, the cooling speed of water cooling quenching is 35 ℃/s, and the cooling speed of air cooling is 4 ℃/min.
EXAMPLE 3 preparation of aluminum alloy No. 3
The composition of aluminum alloy No. 3 is as follows: 0.4 wt% of Cu, 0.2 wt% of Mg, 0.2 wt% of Ag and the balance of high-purity Al.
The preparation method of the aluminum alloy No. 3 comprises the following steps:
(1) placing an aluminum ingot in a smelting furnace, heating to melt the aluminum ingot, firstly adding weighed Cu and Ag components, adding an Mg component after the weighed Cu and Ag components are completely melted, and uniformly stirring;
(2) maintaining the temperature at 730 ℃ for refining treatment, slagging off and standing after refining;
(3) preheating a casting mold, then carrying out centrifugal casting, stopping the rotation of casting equipment after the alloy is solidified, and naturally cooling to room temperature;
(4) and (4) carrying out heat treatment on the alloy obtained in the step (3), and obtaining the aluminum alloy 3# after the heat treatment.
Wherein the heating temperature in the step (1) is 730 ℃; the refining method in the step (2) is to add hexachloroethane accounting for 0.8 percent of the total mass of the melt, and the refining time is 20 min; the preheating temperature in the step (3) is 730 ℃, the centrifugal rotating speed is 250r/min, and the casting temperature is 720 ℃; standing for 30min in the step (2); the step (4) of heat treatment is to heat the alloy obtained in the step (3) to 500 ℃ for the first time, perform water-cooling quenching after heat preservation, then heat the alloy to 180 ℃ for the second time, and cool the alloy to room temperature after heat preservation; the temperature rise rate of the primary temperature rise is 100 ℃/h, and the heat preservation time is 8 h; the temperature rise rate of the secondary temperature rise is 100 ℃/h, and the heat preservation time is 18 h; the transfer time of water cooling quenching is 15s, the cooling speed of water cooling quenching is 30 ℃/s, and the cooling speed of air cooling is 3 ℃/min.
EXAMPLE 4 preparation of aluminum alloy No. 4
The composition of aluminum alloy No. 4 is: 0.4 wt% of Cu, 0.1 wt% of Mg, 0.1 wt% of Ag and the balance of high-purity Al.
The preparation method of the aluminum alloy No. 4 comprises the following steps:
(1) placing an aluminum ingot in a smelting furnace, heating to melt the aluminum ingot, firstly adding weighed Cu and Ag components, adding an Mg component after the weighed Cu and Ag components are completely melted, and uniformly stirring;
(2) maintaining the temperature at 730 ℃ for refining treatment, slagging off and standing after refining;
(3) preheating a casting mold, carrying out centrifugal casting, stopping the rotation of casting equipment after the alloy is solidified, and naturally cooling to room temperature;
(4) and (4) carrying out heat treatment on the alloy obtained in the step (3) to obtain the aluminum alloy No. 4 after the heat treatment.
Wherein the heating temperature in the step (1) is 730 ℃; the refining method in the step (2) is to add hexachloroethane accounting for 0.8 percent of the total mass of the melt, and the refining time is 20 min; the preheating temperature in the step (3) is 730 ℃, the centrifugal rotating speed is 250r/min, and the casting temperature is 720 ℃; standing for 30min in the step (2); the step (4) of heat treatment is that the alloy obtained in the step (3) is heated to 500 ℃ for the first time, water-cooling quenching is carried out after heat preservation, then the temperature is heated to 180 ℃ for the second time, and air cooling is carried out to room temperature after heat preservation; the temperature rise rate of the primary temperature rise is 100 ℃/h, and the heat preservation time is 8 h; the temperature rise rate of the secondary temperature rise is 100 ℃/h, and the heat preservation time is 18 h; the transfer time of water cooling quenching is 15s, the cooling speed of water cooling quenching is 30 ℃/s, and the cooling speed of air cooling is 3 ℃/min.
Comparative example 1 comparative aluminum alloy 1#
The preparation method of comparative aluminum alloy No. 1 is the same as that of aluminum alloy No. 4, except that the element composition of comparative aluminum alloy No. 1 is Cu 0.5 wt%, Mg 0.5 wt%, Ag 0.5 wt%, and the balance Al.
Comparative example 2 comparative aluminum alloy 2#
The elemental compositions of comparative aluminum alloy # 2 and aluminum alloy # 4 were the same, except that the holding temperature in step (2) of the preparation method of comparative aluminum alloy # 2 was 700 ℃.
Comparative example 3 comparative aluminum alloy No. 3
The elemental compositions of comparative aluminum alloy # 3 and aluminum alloy # 4 were the same, except that step (2) of the process for making comparative aluminum alloy # 3 was not refined after incubation at 730 ℃.
Comparative example 4 comparative aluminum alloy 4#
Comparative aluminum alloy # 4 had the same elemental composition as aluminum alloy # 4 except that no heat treatment was performed in the process for making comparative aluminum alloy # 4.
Example 5 Performance characterization
1. Respectively sampling the end faces of the aluminum alloy No. 1-4 and the comparative aluminum alloy No. 1-4, wherein the size of a conductivity sample meets the requirement of GB/T129662008, conducting conductivity test, the size standard of a mechanical property test sample meets ASTM E8, conducting tensile property analysis, conducting a heat resistance test on an RD2-3 type high-temperature creep and endurance strength testing machine, testing the temperature at 200 ℃, loading at 240MPa, and determining the endurance time of the alloy. The results of the tests are shown in Table 1.
TABLE 1 mechanical Properties, conductivity and Heat resistance test results
The result shows that the motor rotor aluminum alloy No. 1-4 prepared by adopting the element components defined by the application has excellent tensile strength and yield strength and excellent mechanical property, and meanwhile, the conductivity can still meet the requirement of 29MS/m and above, the conductivity is good, and the high-temperature durability is good; the endurance time of the aluminum alloy No. 4 adopting the specific element proportion defined in the application reaches 275h, which shows that the high-temperature creep resistance is good.
Compared with the proportion of Cu, Mg and Ag in the aluminum alloy No. 1 which exceeds the proportion defined in the application, the final result shows that the mechanical properties such as strength and the like are poor, the tensile strength and the yield strength are low, the high-temperature endurance time is short, and the high-temperature creep resistance is poor. Compared with the aluminum alloy No. 2, the heat preservation temperature in the step (2) is lower, the molten metal cannot be fully melted, part of the alloy cannot be fully melted into the molten metal, and the mechanical property and the high-temperature creep resistance are influenced; compared with the aluminum alloy No. 3 without refining, the aluminum alloy No. 3 finally shows that the strength, the conductivity and the high-temperature creep resistance are poor, and the main reasons are that oxidation slag inclusion and gas generated by reaction cannot be discharged, the slag inclusion destroys the continuity of a metal matrix, the generated gas causes larger pores in casting, and the continuity of metal is also destroyed; the comparative aluminum alloy No. 4, which was not subjected to the heat treatment step, showed poor strength, conductivity and high temperature creep resistance.
The above description is only an example of the present application, and the protection scope of the present application is not limited by these specific examples, but is defined by the claims of the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the technical idea and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An Al-Cu-Mg-Ag type motor rotor aluminum alloy is characterized by comprising 0.3-1.0 wt% of Cu, 0.1-0.3 wt% of Mg, 0.1-0.3 wt% of Ag and the balance of Al.
2. An Al-Cu-Mg-Ag type motor rotor aluminum alloy according to claim 1, wherein the Al-Cu-Mg-Ag alloy has a content ratio of Cu, Mg and Ag of (3-4): (1-2): (1-2).
3. An Al-Cu-Mg-Ag type motor rotor aluminum alloy according to claim 2, wherein the Al-Cu-Mg-Ag alloy has a content ratio of Cu, Mg and Ag of 4: 1: 1.
4. a method for producing an Al-Cu-Mg-Ag type motor rotor aluminium alloy according to any one of claims 1 to 3, characterized in that it comprises the following steps:
(1) placing an aluminum ingot in a smelting furnace, heating to melt the aluminum ingot, firstly adding weighed Cu and Ag components, adding an Mg component after the weighed Cu and Ag components are completely melted, and uniformly stirring;
(2) keeping the temperature at 720-740 ℃, refining, slagging off and standing;
(3) preheating a casting mold, carrying out centrifugal casting, stopping the rotation of casting equipment after the alloy is solidified, and naturally cooling to room temperature;
(4) and (4) carrying out heat treatment on the alloy obtained in the step (3), and obtaining the Al-Cu-Mg-Ag motor rotor aluminum alloy after the heat treatment.
5. The method as claimed in claim 4, wherein the heating temperature in step (1) is 710-750 ℃; the preheating temperature in the step (3) is 710-.
6. The method of claim 4, wherein the refining in step (2) is carried out by blowing a gas by rotation or by adding a refining agent in an amount of 0.5 to 1% by mass based on the total mass of the melt, and the refining time is 10 to 30 minutes.
7. The preparation method according to claim 4, wherein the step of heat treatment in step (4) comprises the steps of heating the alloy obtained in step (3) to 450-.
8. The preparation method according to claim 7, wherein the temperature rise rate of one temperature rise is 80-120 ℃/h, and the holding time is 6-10 h; the temperature rise rate of the secondary temperature rise is 90-110 ℃/h, and the heat preservation time is 15-20 h.
9. The method according to claim 7, wherein the transfer time of the water-cooling quenching is less than 20s, the cooling rate of the water-cooling quenching is 25-35 ℃/s, and the cooling rate of the air-cooling is 2-4 ℃/min.
10. Use of an Al-Cu-Mg-Ag motor rotor aluminum alloy according to claims 1 to 3 or an Al-Cu-Mg-Ag motor rotor aluminum alloy prepared by the preparation method according to any one of claims 4 to 9, for new energy automobile motor rotors.
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| JPS60243255A (en) * | 1984-05-16 | 1985-12-03 | Sukai Alum Kk | Manufacture of al-cu-mg alloy material |
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| CN111424200A (en) * | 2020-04-23 | 2020-07-17 | 西安交通大学 | High-strength high-heat-resistance low-scandium-silver-added Al-Cu-Mg alloy and heat treatment process thereof |
| CN112281033A (en) * | 2020-09-25 | 2021-01-29 | 中南大学 | Method for simultaneously improving corrosion resistance and heat resistance of aluminum-copper-magnesium alloy oil well pipe |
| CN112662969A (en) * | 2020-12-04 | 2021-04-16 | 中南大学 | Heat treatment method for improving high-temperature endurance performance of deformed aluminum-copper-magnesium-silver alloy |
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2022
- 2022-04-18 CN CN202210403112.6A patent/CN114959388B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60243255A (en) * | 1984-05-16 | 1985-12-03 | Sukai Alum Kk | Manufacture of al-cu-mg alloy material |
| CN106917008A (en) * | 2017-02-17 | 2017-07-04 | 南京南瑞集团公司 | Aluminium alloy cable connector high-strength highly-conductive resistance to compression creep aluminium alloy and its preparation method and application |
| CN110724865A (en) * | 2019-11-01 | 2020-01-24 | 北京工业大学 | Al-Cu-Mg-Ag-Si-Sc heat-resistant alloy and preparation process thereof |
| CN111424200A (en) * | 2020-04-23 | 2020-07-17 | 西安交通大学 | High-strength high-heat-resistance low-scandium-silver-added Al-Cu-Mg alloy and heat treatment process thereof |
| CN112281033A (en) * | 2020-09-25 | 2021-01-29 | 中南大学 | Method for simultaneously improving corrosion resistance and heat resistance of aluminum-copper-magnesium alloy oil well pipe |
| CN112662969A (en) * | 2020-12-04 | 2021-04-16 | 中南大学 | Heat treatment method for improving high-temperature endurance performance of deformed aluminum-copper-magnesium-silver alloy |
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