CN105908020B - A kind of preparation method of aluminium composite tungsten material - Google Patents
A kind of preparation method of aluminium composite tungsten material Download PDFInfo
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- CN105908020B CN105908020B CN201610323203.3A CN201610323203A CN105908020B CN 105908020 B CN105908020 B CN 105908020B CN 201610323203 A CN201610323203 A CN 201610323203A CN 105908020 B CN105908020 B CN 105908020B
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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
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/12—Making non-ferrous alloys by processing in a semi-solid state, e.g. holding the alloy in the solid-liquid phase
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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
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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Abstract
A kind of preparation method of aluminium composite tungsten material, its step is：First raw material of aluminum alloy is put into molten aluminium alloy is smelted into smelting furnace；Then molten aluminium alloy is cooled to semi-solid state, then stirred while adding tungsten powder into semi-solid aluminium alloy liquid；After tungsten powder addition is finished, stand, while being warming up to after cast temperature, be stirred again, stirring is cast immediately after finishing, and obtains aluminium composite tungsten material.The present invention using under the semi-solid state of aluminum alloy melt due to adding tungsten powder, it is stirred simultaneously, tungsten powder can so be overcome than great, the problem of easily precipitating, so as to be conducive to preparing the uniform aluminium composite tungsten material of composition, and the technique of the present invention is simple, production cost is low, available for complicated, the manufacture of sizes product.
Description
Technical field
The invention belongs to aluminum matrix composite preparing technical field, it is specifically related to using tungsten powder as reinforcement, passes through half
Solid cast technology and mechanical agitation methods prepare aluminium-composite tungsten material.
Background technology
The characteristics of tungsten has high temperature resistant, high intensity, high rigidity and low thermal coefficient of expansion, is irreplaceable in various fields
Critical material, especially in defence and military, aerospace field have special status.But its high density and inoxidizability are poor
Make its application limited, it is therefore desirable to develop the extraordinary novel light material that combination property is better than tungsten.
Tungsten powder is added in aluminium alloy as reinforcement, a kind of extraordinary light alloy material can be obtained, with high rigidity, height
Heat endurance, high-wearing feature, high elastic modulus and low-density advantage.Due to there is larger density contrast between aluminium and tungsten, therefore
Using conventional alloy casting method, the uniform aluminium-composite tungsten material of composition is hardly resulted in.
At present, research both at home and abroad about aluminium-composite tungsten material, it is many to prepare aluminium-tungsten composite wood using heat and other static pressuring processes
Material, the Chinese patent of such as Patent No. 201410010271.5 discloses a kind of partinium and preparation method thereof, this method choosing
With tungsten powder and aluminium powder by cold isostatic compaction after, carry out high temperature insostatic pressing (HIP) blank preparation, sintering and prepare aluminium-tungsten alloy block material
Material, whole process needs to be inflated atmosphere protection in the technique, prevents Powder Oxidation, high to preparing environmental requirement, in mixing process by
Larger in density contrast, it is big that powder is well mixed difficulty；In addition, the product size prepared using heat and other static pressuring processes is small, shape letter
It is single, it is not suitable for the complicated product of large scale structure.
The content of the invention
, can it is an object of the invention to there is problem and shortage there is provided a kind of technique is simple, production cost is low for above-mentioned
Obtain the preparation method of the uniform aluminium-composite tungsten material of composition.
The technical proposal of the invention is realized in this way：
The preparation method of aluminium-composite tungsten material of the present invention, is characterized in comprising the following steps：
Step 1）：Raw material of aluminum alloy is put into molten aluminium alloy is smelted into smelting furnace；
Step 2）：Molten aluminium alloy cooling is formed as into semi-solid aluminium alloy liquid, then while stirring, while adding tungsten
Powder；
Step 3）：After tungsten powder addition is finished, stand, while being warming up to cast temperature, semi-solid aluminium alloy liquid is heated into
Molten aluminium alloy, is stirred again, and stirring is cast immediately after finishing, and obtains aluminium-composite tungsten material.
Wherein, the raw material of aluminum alloy uses 7xxx aluminium alloys.
The molten aluminium alloy is cooled to less than 20 DEG C -30 DEG C of liquidus temperature.
The speed of the stirring is 310-350 revs/min.
The step 2）In mixing time be 10 minutes.
The step 3）In mixing time be 5 minutes.
The cast temperature is 730 DEG C -750 DEG C.
The present invention adds tungsten powder due to using under the semi-solid state of aluminum alloy melt, is stirred simultaneously, so energy gram
Tungsten powder is taken than great, the problem of easily precipitating, so as to be conducive to preparing the uniform aluminium-composite tungsten material of composition, and the present invention
Technique is simple, production cost is low, available for complicated, the manufacture of sizes product.
The present invention is further illustrated below in conjunction with the accompanying drawings.
Brief description of the drawings
The micro-organization chart for the ingot casting upper end that Fig. 1 is prepared for the present invention.
The micro-organization chart for the ingot casting lower end that Fig. 2 is prepared for the present invention.
Embodiment
The preparation method of aluminium-composite tungsten material of the present invention, the raw material used is aluminium alloys and pure tungsten powder.First press
Component list dispensing, then carries out aluminium alloy smelting, and molten aluminium alloy is heated into cast temperature and insulation one using smelting furnace
The section time；Then the temperature of molten aluminium alloy is brought down below 20 DEG C -30 DEG C of aluminium alloy liquidus temperature, enables aluminum alloy to liquation and formed
For semi-solid aluminium alloy liquid, tungsten powder is then added, and be that, while being stirred, mixing time is 10 points while adding tungsten powder
Clock；After tungsten powder, which is added, to be finished, the temperature of semi-solid aluminium alloy liquid is increased to 730 DEG C -750 DEG C of cast temperature, is to add
Add the semi-solid aluminium alloy liquid of tungsten powder to reheat into molten aluminium alloy, be stirred again, mixing time is 5 minutes, is stirred
Mix and cast immediately after finishing, obtain aluminium-composite tungsten material.
Below by specific embodiment, the present invention is further illustrated.
Embodiment 1：
The present invention is used to prepare W content for 5% aluminium-composite tungsten material, preparation method is as follows：
（1）Dispensing：According to composition Zn：12%, Mg：3%, Cu：1.5%, Mn：0.1%, Cr：0.2%, Zr：0.2%, Ti：0.1%,
W：5%, Al：77.9% carries out dispensing；
（2）Melting：It will be closed in smelting furnace in the middle of pure Zn, pure Mg, Al-Cu intermediate alloy, Al-Mn intermediate alloys, Al-Cr
Gold, Al-Zr intermediate alloys, Al-Ti intermediate alloys and pure Al heating fusings, and 780 DEG C are superheated to, with carbon trichloride to aluminium alloy
Liquation is refined, skimmed；
（3）Add W powder：Its temperature is brought down below liquidus temperature 20-30 by molten aluminium alloy after refining, skimming
DEG C, i.e., 620 DEG C, semi-solid aluminium alloy liquid is formed as, then semi solid aluminum aluminium alloy is stirred using stirring-head, together
Shi Tianjia tungsten powders, addition is finished within 10 minutes, that is to say, that mixing time is 10 minutes, and the rotating speed of stirring-head is 310-350
Rev/min；
（4）Add after W powder, removed stirring-head, then stand, while the temperature of semi-solid aluminium alloy liquid is risen to
750 DEG C and it is re-formed as molten aluminium alloy, be again stirring for casting immediately after 5 minutes, prepare the uniform aluminium of composition-
Tungsten composite ingot, as depicted in figs. 1 and 2.
Embodiment 2：
The present invention is used to prepare W content for 10% aluminium composite tungsten material, preparation method is as follows：
（1）Dispensing：According to composition Zn：12%, Mg：3%, Cu：1.5%, Mn：0.1%, Cr：0.2%, Zr：0.2%, Ti：0.1%,
W：10%, Al：72.9% carries out dispensing；
（2）Melting：It will be closed in smelting furnace in the middle of pure Zn, pure Mg, Al-Cu intermediate alloy, Al-Mn intermediate alloys, Al-Cr
Gold, Al-Zr intermediate alloys, Al-Ti intermediate alloys and pure Al heating fusings, and 780 DEG C are superheated to, with carbon trichloride to aluminium alloy
Liquation is refined, skimmed；
（3）Add W powder：Its temperature is brought down below 20-30 DEG C of liquidus curve, i.e., by molten aluminium alloy after refining, skimming
620 DEG C, semi-solid aluminium alloy liquid is formed as, then semi solid aluminum aluminium alloy is stirred using stirring-head, added simultaneously
Plus tungsten powder, addition is finished within 10 minutes, that is to say, that mixing time is 10 minutes, and the rotating speed of stirring-head turns for 310-350/
Point；
（4）Add after W powder, removed stirring-head, then stand, while the temperature of semi-solid aluminium alloy liquid is risen to
750 DEG C and it is re-formed as molten aluminium alloy, be again stirring for casting immediately after 5 minutes, prepare the uniform aluminium of composition-
Tungsten composite ingot, as depicted in figs. 1 and 2.
Embodiment 3：
The present invention is used to prepare W content for 20% aluminium composite tungsten material, preparation method is as follows：
（1）Dispensing：According to composition Zn：12%, Mg：3%, Cu：1.5%, Mn：0.1%, Cr：0.2%, Zr：0.2%, Ti：0.1%,
W：20%, Al：62.9% carries out dispensing；
（2）Melting：It will be closed in smelting furnace in the middle of pure Zn, pure Mg, Al-Cu intermediate alloy, Al-Mn intermediate alloys, Al-Cr
Gold, Al-Zr intermediate alloys, Al-Ti intermediate alloys and pure Al heating fusings, and 780 DEG C are superheated to, with carbon trichloride to aluminium alloy
Liquation is refined, skimmed；
（3）Add W powder：Its temperature is brought down below 20-30 DEG C of liquidus curve, i.e., by molten aluminium alloy after refining, skimming
620 DEG C, semi-solid aluminium alloy liquid is formed as, then semi solid aluminum aluminium alloy is stirred using stirring-head, added simultaneously
Plus tungsten powder, addition is finished within 10 minutes, that is to say, that mixing time is 10 minutes, and the rotating speed of stirring-head turns for 310-350/
Point；
（4）Add after W powder, removed stirring-head, then stand, while the temperature of semi-solid aluminium alloy liquid is risen to
750 DEG C and it is re-formed as molten aluminium alloy, be again stirring for casting immediately after 5 minutes, prepare the uniform aluminium of composition-
Tungsten composite ingot, as depicted in figs. 1 and 2.
The present invention is described by embodiment, but not limited the invention, with reference to description of the invention, institute
Other changes of disclosed embodiment, are such as readily apparent that, such change should belong to for the professional person of this area
Within the scope of the claims in the present invention are limited.
Claims (4)
1. a kind of preparation method of aluminium-composite tungsten material, it is characterised in that comprise the following steps：
Step 1)：Raw material of aluminum alloy is put into molten aluminium alloy is smelted into smelting furnace；
Step 2)：Molten aluminium alloy cooling is formed as into semi-solid aluminium alloy liquid, then while stirring, while adding tungsten powder, is stirred
The speed mixed is 310-350 revs/min, and mixing time is 10 minutes；
Step 3)：After tungsten powder addition is finished, stand, while being warming up to cast temperature, semi-solid aluminium alloy liquid is heated into aluminium closes
Golden liquation, is stirred again, and the speed of stirring is 310-350 revs/min, and mixing time is 5 minutes, and stirring is poured immediately after finishing
Casting, obtains aluminium-composite tungsten material.
2. the preparation method of aluminium-composite tungsten material according to claim 1, it is characterised in that：The raw material of aluminum alloy
Using 7xxx aluminium alloys.
3. the preparation method of aluminium-composite tungsten material according to claim 1, it is characterised in that：The molten aluminium alloy is
It is cooled to less than 20 DEG C -30 DEG C of liquidus temperature.
4. the preparation method of aluminium-composite tungsten material according to claim 1, it is characterised in that：The cast temperature is 730
℃-750℃。
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| CN201610323203.3A CN105908020B (en) | 2016-05-17 | 2016-05-17 | A kind of preparation method of aluminium composite tungsten material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107881353A (en) * | 2016-09-29 | 2018-04-06 | 宁波江丰电子材料股份有限公司 | The forming method of aluminum bronze tungsten alloy |
| CN108103326A (en) * | 2016-11-24 | 2018-06-01 | 宁波江丰电子材料股份有限公司 | The forming method of aluminium alloy |
| CN109082549B (en) * | 2018-10-26 | 2020-08-11 | 北京理工大学 | Preparation method of easy-reaction aluminum/tungsten active material |
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| CN1151295C (en) * | 2001-04-13 | 2004-05-26 | 中国科学院金属研究所 | Method for adding particles to slurry in preparing particle reinforced Al-base composition by liquid state method |
| JP2008001954A (en) * | 2006-06-23 | 2008-01-10 | Toyota Central Res & Dev Lab Inc | Aluminum alloy for use in semisolid casting and manufacturing method of aluminum alloy casting |
| CN102703768B (en) * | 2012-03-19 | 2014-04-16 | 燕山大学 | Aluminum-tungsten composite and production method thereof |
| WO2014121384A1 (en) * | 2013-02-11 | 2014-08-14 | National Research Counsil Of Canada | Metal matrix composite and method of forming |
| CN103773983B (en) * | 2014-01-09 | 2015-11-25 | 安泰科技股份有限公司 | Partinium and preparation method thereof |
| CN105401001B (en) * | 2015-11-13 | 2017-06-20 | 北京有色金属研究总院 | A kind of powder metallurgic method prepares the process of tungsten particle reinforced aluminum matrix composites |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of materials and processing, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Institute Of Materials And Processing |
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Effective date of registration: 20221116 Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Institute of materials and processing, Guangdong Academy of Sciences |
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