CN111074106A - High-efficiency low-consumption rolling rare earth aluminum alloy and preparation method thereof - Google Patents

High-efficiency low-consumption rolling rare earth aluminum alloy and preparation method thereof Download PDF

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Publication number
CN111074106A
CN111074106A CN201911322291.5A CN201911322291A CN111074106A CN 111074106 A CN111074106 A CN 111074106A CN 201911322291 A CN201911322291 A CN 201911322291A CN 111074106 A CN111074106 A CN 111074106A
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CN
China
Prior art keywords
alloy
aluminum alloy
rare earth
consumption
efficiency low
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Pending
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CN201911322291.5A
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Chinese (zh)
Inventor
程仁寨
马旭
王丛昆
王兴瑞
程雪婷
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Shandong Nanshan Aluminium Co Ltd
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Shandong Nanshan Aluminium Co Ltd
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Priority to CN201911322291.5A priority Critical patent/CN111074106A/en
Publication of CN111074106A publication Critical patent/CN111074106A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Abstract

A high-efficiency low-consumption rolled rare earth aluminum alloy and a preparation method thereof belong to the field of rare earth aluminum alloy manufacture, and comprise the following substances in percentage by mass: 0.8-2.0% of Mn, 0.3-0.8% of Er, 0.2-0.5% of Zr, and the balance of Al and impurities. The invention adopts common Al and Mn to be used in combination, and simultaneously introduces Er and Zr by adding Al-Er intermediate alloy and Al-Zr intermediate alloy as raw materials, thereby strongly stimulating the generation of dynamic recrystallization of an aluminum matrix, obviously improving the rolling deformation capability of the alloy, simultaneously adopting the conventional methods of smelting, forming, homogenization treatment, hot rolling treatment and the like, ensuring that the total content of Er and Zr is less than 8 percent, having the characteristics of low production cost, high production efficiency, easy operation and the like, and being beneficial to large-scale commercial production.

Description

High-efficiency low-consumption rolling rare earth aluminum alloy and preparation method thereof
Technical Field
The invention belongs to the field of rare earth aluminum alloy manufacturing, and particularly relates to a high-efficiency low-consumption rolled rare earth aluminum alloy and a preparation method thereof.
Background
The rare earth elements have unique extra-nuclear electron arrangement, and are widely applied to the fields of electronics, petrochemical industry, metallurgy, machinery, energy, light industry, environmental protection, agriculture and the like, and can purify alloy solution, improve alloy structure, improve the room-temperature and high-temperature mechanical properties of the alloy, enhance the corrosion resistance of the alloy and the like. Therefore, the rare earth aluminum alloy has the inherent advantages of aluminum alloy, such as low density, high specific strength, metallic luster and the like, and simultaneously has the new characteristics of high heat resistance and excellent creep property. Although the existing rare earth aluminum alloy has excellent mechanical properties, the production cost is high, the production efficiency is low, and the common application is not facilitated.
Disclosure of Invention
The invention provides a high-efficiency low-consumption rolled rare earth aluminum alloy and a preparation method thereof, which are used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
the high-efficiency low-consumption rolled rare earth aluminum alloy comprises the following substances in percentage by mass: 0.8-2.0% of Mn, 0.3-0.8% of Er, 0.2-0.5% of Zr, and the balance of Al and impurities.
The high-efficiency low-consumption rolling rare earth aluminum alloy comprises the impurities of Fe, Si and Cu.
The high-efficiency low-consumption rolling rare earth aluminum alloy has the impurity mass less than 0.03% of the total mass.
A preparation method of a high-efficiency low-consumption rolled rare earth aluminum alloy is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: accurately weighing the intermediate alloy of aluminum, manganese and Al-Er and the intermediate alloy of Al-Zr, and feeding the intermediate alloy into a preheating kettle for preheating;
step two: delivering the aluminum into a melting kettle for melting, heating to the temperature of 720-750 ℃ after melting is finished, adding manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy, stirring, refining and slagging off;
step three: and (3) keeping the temperature and standing for 25-45 minutes, cooling, casting to obtain a cast aluminum alloy casting blank or an aluminum alloy cast ingot, homogenizing, and performing hot rolling forming to obtain the rolled rare earth aluminum alloy.
According to the preparation method of the rolling rare earth aluminum alloy with high efficiency and low consumption, the purity of aluminum and manganese is more than 99.9%, and the purity of the medium Al-Er intermediate alloy and the Al-Zr intermediate alloy is more than 99.5%.
According to the preparation method of the high-efficiency low-consumption rolling rare earth aluminum alloy, the preheating temperature of the preheating kettle in the first step is 150-.
In the preparation method for rolling the rare earth aluminum alloy with high efficiency and low consumption, the aluminum alloy melt in the third step is cooled to 700-.
According to the preparation method for rolling the rare earth aluminum alloy with high efficiency and low consumption, the mould is preheated to 205-308 ℃ during casting in the third step.
The preparation method of the high-efficiency low-consumption rolling rare earth aluminum alloy comprises the third step of hot rolling at the temperature of 425-
According to the preparation method of the rolling rare earth aluminum alloy with high efficiency and low consumption, the casting molding adopts a continuous casting molding mode.
The invention has the advantages that: the method adopts the common combination of Al and Mn, simultaneously introduces Er and Zr by adding Al-Er intermediate alloy and Al-Zr intermediate alloy as raw materials, strongly stimulates the generation of dynamic recrystallization of an aluminum matrix, obviously improves the rolling deformation capability of the alloy, adopts the conventional methods of smelting, forming, homogenization treatment, hot rolling treatment and the like, has the characteristics of low production cost, high production efficiency, easy operation and the like, has the total content of Er and Zr less than 8 percent, and is beneficial to large-scale commercial production.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Example 1 step one: accurately weighing aluminum, manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy according to the mass percent of 0.8% of Mn, 0.3% of Er, 0.2% of Zr and the balance of Al, and feeding the intermediate alloy into a preheating kettle preheated to 200 ℃ for preheating;
step two: feeding aluminum into a melting kettle for melting, heating to 725 ℃ after melting, adding manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy, introducing argon, stirring, refining for 15 minutes, and slagging off;
step three: and (3) keeping the temperature and standing for 25 minutes, then cooling, when the temperature is reduced to 705 ℃, casting into a flat ingot by using a metal mold, after homogenization treatment, air cooling for 10 minutes, turning, and then carrying out hot rolling forming to obtain the rolled rare earth aluminum alloy plate.
Example 2, step one: accurately weighing aluminum, manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy according to the mass percent of 1.4 percent of Mn, 0.5 percent of Er, 0.3 percent of Zr and the balance of Al, and feeding the intermediate alloy into a preheating kettle preheated to 200 ℃ for preheating;
step two: feeding aluminum into a melting kettle for melting, heating to 735 ℃ after melting, adding manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy, introducing argon, stirring, refining for 15 minutes, and slagging off;
step three: and (3) keeping the temperature and standing for 30 minutes, then cooling, when the temperature is reduced to 710 ℃, obtaining a cylindrical blank by adopting electromagnetic continuous casting, performing air cooling for 8 minutes after homogenization treatment, mechanically processing the cylindrical blank into a plate blank, and performing hot rolling forming to obtain the rolled rare earth aluminum alloy plate.
Example 3 step one: accurately weighing aluminum, manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy according to the mass percent of 2.0 percent of Mn, 0.8 percent of Er, 0.5 percent of Zr and the balance of Al, and feeding the intermediate alloy into a preheating kettle preheated to 200 ℃ for preheating;
step two: feeding aluminum into a melting kettle for melting, heating to 745 ℃ after melting, adding manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy, introducing argon, stirring, refining for 15 minutes, and slagging off;
step three: and (3) keeping the temperature and standing for 30 minutes, then cooling, after the temperature is reduced to 722 ℃, casting by adopting a common continuous casting method to obtain a cylindrical blank, after homogenization treatment, air cooling for 8 minutes, machining, and then carrying out hot rolling forming to obtain the rolled rare earth aluminum alloy plate.
Performance detection
The performance ratio is shown in table one:
1. serial number 2. Tensile strength 3. Yield strength 4. Elongation percentage
5. Example 1 6. 505 7. 395 8. 9.8
9. Example 2 10. 469 11. 357 12. 10.1
13. Example 3 14. 488 15. 373 16. 10.3
Watch 1
As can be seen from the table I, the aluminum alloys in examples 1-3 have certain mechanical strength, higher elongation, and favorable hot rolling processing (no obvious edge crack and surface crack characteristics), and are ideal materials for aluminum alloy production and application.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A high-efficiency low-consumption rolling rare earth aluminum alloy is characterized in that: the material composition comprises the following components in percentage by mass: 0.8-2.0% of Mn, 0.3-0.8% of Er, 0.2-0.5% of Zr, and the balance of Al and impurities.
2. The high-efficiency low-consumption rolled rare earth aluminum alloy as set forth in claim 1, wherein: the impurities comprise Fe, Si and Cu.
3. The high-efficiency low-consumption rolled rare earth aluminum alloy as set forth in claim 1, wherein: the mass of the impurities is less than 0.03 percent of the total mass.
4. A preparation method of a high-efficiency low-consumption rolled rare earth aluminum alloy is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: accurately weighing the intermediate alloy of aluminum, manganese and Al-Er and the intermediate alloy of Al-Zr, and feeding the intermediate alloy into a preheating kettle for preheating;
step two: delivering the aluminum into a melting kettle for melting, heating to the temperature of 720-750 ℃ after melting is finished, adding manganese, Al-Er intermediate alloy and Al-Zr intermediate alloy, stirring, refining and slagging off;
step three: and (3) keeping the temperature and standing for 25-45 minutes, cooling, casting to obtain a cast aluminum alloy casting blank or an aluminum alloy cast ingot, homogenizing, and performing hot rolling forming to obtain the rolled rare earth aluminum alloy.
5. The method for preparing the high-efficiency low-consumption rolled rare earth aluminum alloy according to claim 4, characterized in that: the purity of the aluminum and the manganese is more than 99.9 percent, and the purity of the medium Al-Er intermediate alloy and the Al-Zr intermediate alloy is more than 99.5 percent.
6. The method for preparing the high-efficiency low-consumption rolled rare earth aluminum alloy according to claim 4, characterized in that: the preheating temperature of the preheating kettle in the first step is 150-200 ℃.
7. The method for preparing the high-efficiency low-consumption rolled rare earth aluminum alloy according to claim 4, characterized in that: the aluminum alloy melt in the third step is cooled to the temperature of 700-740 ℃.
8. The method for preparing the high-efficiency low-consumption rolled rare earth aluminum alloy according to claim 4, characterized in that: and preheating the mould to 205-308 ℃ during casting in the third step.
9. The method for preparing the high-efficiency low-consumption rolled rare earth aluminum alloy according to claim 4, characterized in that: in the third step, the hot rolling temperature is 425 and 560 ℃, the inter-pass deformation is 1-10%, the inter-pass heat preservation time is 5-15 minutes, and the total deformation is 50-85%.
10. The method for preparing the high-efficiency low-consumption rolled rare earth aluminum alloy according to claim 4, characterized in that: the casting molding adopts a continuous casting molding mode.
CN201911322291.5A 2019-12-20 2019-12-20 High-efficiency low-consumption rolling rare earth aluminum alloy and preparation method thereof Pending CN111074106A (en)

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US20110044844A1 (en) * 2009-08-19 2011-02-24 United Technologies Corporation Hot compaction and extrusion of l12 aluminum alloys
CN104805342A (en) * 2015-05-21 2015-07-29 湖南稀土金属材料研究院 Aluminum alloy material, preparing method of aluminum alloy material and application of aluminum alloy material
CN105441702A (en) * 2014-09-29 2016-03-30 温兴琴 Al-Mg alloy material containing rare earth erbium, zirconium and manganese and preparation treatment method thereof
CN108330419A (en) * 2018-03-16 2018-07-27 北京工业大学 A kind of thermal deformation of Al-Mg-Mn-Er-Zr sheet alloys and its stabilization process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090263273A1 (en) * 2008-04-18 2009-10-22 United Technologies Corporation High strength L12 aluminum alloys
US20110044844A1 (en) * 2009-08-19 2011-02-24 United Technologies Corporation Hot compaction and extrusion of l12 aluminum alloys
CN105441702A (en) * 2014-09-29 2016-03-30 温兴琴 Al-Mg alloy material containing rare earth erbium, zirconium and manganese and preparation treatment method thereof
CN104805342A (en) * 2015-05-21 2015-07-29 湖南稀土金属材料研究院 Aluminum alloy material, preparing method of aluminum alloy material and application of aluminum alloy material
CN108330419A (en) * 2018-03-16 2018-07-27 北京工业大学 A kind of thermal deformation of Al-Mg-Mn-Er-Zr sheet alloys and its stabilization process

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