CN102703768B - Aluminum-tungsten composite and production method thereof - Google Patents
Aluminum-tungsten composite and production method thereof Download PDFInfo
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- CN102703768B CN102703768B CN201210071552.2A CN201210071552A CN102703768B CN 102703768 B CN102703768 B CN 102703768B CN 201210071552 A CN201210071552 A CN 201210071552A CN 102703768 B CN102703768 B CN 102703768B
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Abstract
Disclosed is aluminum-tungsten composite. Tungsten accounts for 1.4%-4.2% of aluminum in volume ratio. A production method of the aluminum-tungsten composite mainly includes spreading particles of pure tungsten between two aluminum plates, heating to 280-350 DEG C, rolling the particles on a mill at the rolling speed of 0.4-0.8m/s with rolling reduction of 50% after heating continues for 5-20 minutes, air-cooling to room temperature after rolling, repeatedly heating for four times, and cyclically processing combined composite plates by shearing, grinding, cleaning, heating and rolling for 11 times by the method. The aluminum-tungsten composite has the advantages of high strength, high rigidity and high conductivity and has yield strength of 130-152MPa, tensile strength of 145-160MPa, Brinell hardness of 50-63HB, and electric conductivity of 2.70-2.83 Mu omega/cm.
Description
Technical field
The present invention relates to a kind of metal composite and preparation method thereof.
Background technology
Aluminum matrix composite has the advantages such as low density, high tensile, high elastic coefficient and high-wearing feature.Therefore, aluminum matrix composite has very large application potential in aerospace.The method of producing at present aluminum matrix composite is mostly squeeze casting method, pressure-free impregnation method and spray-up method, there is certain shortcoming in these methods, such as reinforcing particle disperses inhomogeneous in matrix, reinforcing particle and aluminum substrate wettability are poor, economic benefit that the matrix material porosity of preparation is high and lower etc.Processed by Accumulative Roll-bonding has overcome above-mentioned shortcoming as a kind of brand-new method, and in recent years, people utilize the method to produce multiple aluminum matrix composite, such as B
4c Matrix Composites Reinforced by Stirring, SiC
pmatrix Composites Reinforced by Stirring, Al
2o
3matrix Composites Reinforced by Stirring, SiO
2matrix Composites Reinforced by Stirring, ZrO
2matrix Composites Reinforced by Stirring and ZnO
2matrix Composites Reinforced by Stirring.The wild phase of these aluminum matrix composites is ceramic particle, and therefore, their conductivity has been subject to restriction significantly.Electrostatic accumulation has seriously threatened the safety of aviation assembly.Therefore,, when selecting the material of aviation assembly, specific conductivity must be taken into account.The tungsten particle enhanced aluminum-based composite material higher by hardness likely solves the problem that their electric conductivitys are low under the prerequisite of not sacrificing the good mechanical property of original aluminum matrix composite, and then reaches the requirement of aviation assembly material.Up to the present, by the report of Processed by Accumulative Roll-bonding method production pure metal particles reinforced aluminum matrix composites, also not yet find so far.
Summary of the invention
The object of the present invention is to provide a kind of aluminium-composite tungsten material with high strength, high rigidity, superior electrical conductivity energy and preparation method thereof.The present invention utilizes commercial-purity aluminium sheet material and appropriate pure tungsten metallic particles as raw material, by means of Processed by Accumulative Roll-bonding means, can obtain having the aluminium-composite tungsten material of excellent mechanical property and conductivity.
Technical scheme of the present invention is as follows:
One, aluminium-composite tungsten material of the present invention is pure tungsten particle enhanced aluminum-based composite material, and the content volume ratio of tungsten in aluminium is: 1.4%-4.2%.
Two, the preparation method of above-mentioned aluminium-composite tungsten material:
1, starting material: annealed state 1060 commercial-purity aluminium sheet materials and diameter are the pure tungsten particle of 10-15 μ m.
2, synthetic composite sheet: surface of aluminum plate is polished with wire brush, then clean with alcohol.The pure tungsten uniform particles that is 0.35%-1.05% by volume ratio is layered between two aluminium sheets; After two sheet materials are stacked, put into retort furnace, Heating temperature is 280-350 ℃, heats and on milling train, is rolled after 5-20 minute.In the process of rolling, do not use lubricating oil, roll speed is 0.4-0.8m/s, and draught is 50%.After rolling completes, air cooling is to room temperature.Above process is the first passage rolling.
Composite sheet after the first passage rolling is cut off from centre, with steel brush and alcohol, plate surface is polished, cleaned respectively, the even lay pure tungsten particle identical with first inferior quality between two sheet materials after cut-out, its heating, rolling are identical with the first passage.Repeat shearing, polishing cleaning, lay pure tungsten particle, stack, heat and be rolling to the 4th passage.Synthesizing tungsten volume ratio is aluminium-composite tungsten material sheet material of 1.4%-4.2%.
3, uniform particlesization is processed: do not adding under the condition of pure tungsten particle, shearing, the polishing that above-mentioned synthetic aluminium-composite tungsten material sheet material is carried out to 11 circulations according to the method described above cleaned, stacked, heating and rolling.
The present invention compared with prior art tool has the following advantages: aluminum matrix composite of the present invention is not destroying under the prerequisite of fine aluminium excellent conductive capability, and mechanical property has obtained significantly improving.Its yield strength is that 130-152MPa, tensile strength are that 145-160MPa, Brinell hardness are 50-63HB, the 3.25-3.8 that is respectively annealed state 1060 commercial-purity aluminiums doubly, 1.812-2 doubly and 1.72-2.172 doubly.During due to this kind of matrix material of preparation, do not introduce intermetallic compound, so conductivity is good, its electric conductivity is 2.70-2.83 μ Ω cm, the 1.01-1.04 that is respectively annealed state 1060 commercial-purity aluminiums, 2024 T3 state aluminium alloys, 5052 H1 state aluminium alloys, 6061 T6 state aluminium alloys, 7075 T6 state aluminium alloys doubly, 0.46-0.48 doubly, 0.54-0.56 doubly, 0.68-0.7 doubly and 0.52-0.54 doubly.
Accompanying drawing explanation
Fig. 1 is the XRD figure spectrum of the composite board of the embodiment of the present invention 1 acquisition.
Fig. 2 is the metallograph of the composite board of the embodiment of the present invention 1 acquisition.
concrete embodiment:
Embodiment 1
Polished with wire brush in annealed state 1060 commercial pure Al sheets (the southwestern Aluminum company limited produce) surface that is of a size of 150mm * 100mm * 7mm, then with alcohol, clean.By diameter, be that 14g pure tungsten particle (production of paddy field, the Shanghai material Science and Technology Ltd.) uniform spreading of 10-15 μ m is between two aluminium sheets, after two aluminium sheets stack, putting into temperature is 280 ℃ of retort furnaces, heating after 5 minutes is 300mm at diameter, on the milling train that length is 220mm, is rolled.In the process of rolling, do not use lubricating oil, roll speed and draught are respectively 0.6m/s and 50%.After rolling completes, air cooling is to room temperature.Composite sheet after first passage rolling is cut off from centre, with steel brush and alcohol, plate surface is polished, cleaned respectively, the even lay pure tungsten particle (14g) identical with first inferior quality between two sheet materials after cut-out, carries out the 2nd passage rolling 280 ℃ of heating after 5 minutes.Rolling condition is identical with the first passage.Repeat shearing, polishing cleaning, lay pure tungsten particle, stack, heat and be rolling to the 4th passage.Finally synthesize Al/1.4vol%W composite board.Shearing, the polishing that synthetic composite board is carried out to 11 circulations cleaned, stacked, heating and rolling.Finally obtain the Al/1.4vol%W composite board of even particle distribution.
Embodiment 2
Polished with wire brush in annealed state 1060 commercial pure Al sheets (the southwestern Aluminum company limited produce) surface that is of a size of 150mm * 100mm * 7mm, then with alcohol, clean.By diameter, be that 29g pure tungsten particle (production of paddy field, the Shanghai material Science and Technology Ltd.) uniform spreading of 10-15 μ m is between two aluminium sheets, after two aluminium sheets stack, putting into temperature is 350 ℃ of retort furnaces, heating after 10 minutes is 300mm at diameter, on the milling train that length is 220mm, is rolled.In the process of rolling, do not use lubricating oil, roll speed and draught are respectively 0.4m/s and 50%.After rolling completes, air cooling is to room temperature.Composite sheet after first passage rolling is cut off from centre, with steel brush and alcohol, plate surface is polished, cleaned respectively, the even lay pure tungsten particle (29g) identical with first inferior quality between two sheet materials after cut-out, carries out the 2nd passage rolling 350 ℃ of heating after 10 minutes.Rolling condition is identical with the first passage.Repeat shearing, polishing cleaning, lay pure tungsten particle, stack, heat and be rolling to the 4th passage.Finally synthesize Al/2.8vol%W composite board.Shearing, the polishing that synthetic composite board is carried out to 11 circulations cleaned, stacked, heating and rolling.Finally obtain the Al/2.8vol%W composite board of even particle distribution.
Embodiment 3
Polished with wire brush in annealed state 1060 commercial pure Al sheets (the southwestern Aluminum company limited produce) surface that is of a size of 150mm * 100mm * 7mm, then with alcohol, clean.By diameter, be that 44.3 g pure tungsten particles (production of paddy field, the Shanghai material Science and Technology Ltd.) uniform spreading of 10-15 μ m is between two aluminium sheets, after two aluminium sheets stack, putting into temperature is 310 ℃ of retort furnaces, heating after 20 minutes is 300mm at diameter, on the milling train that length is 220mm, is rolled.In the process of rolling, do not use lubricating oil, roll speed and draught are respectively 0.8m/s and 50%.After rolling completes, air cooling is to room temperature.Composite sheet after first passage rolling is cut off from centre, with steel brush and alcohol, plate surface is polished, cleaned respectively, the even lay pure tungsten particle (44.3g) identical with first inferior quality between two sheet materials after cut-out, carries out the 2nd passage rolling 310 ℃ of heating after 20 minutes.Rolling condition is identical with the first passage.Repeat shearing, polishing cleaning, lay pure tungsten particle, stack, heat and be rolling to the 4th passage.Finally synthesize Al/4.2vol%W composite board.Shearing, the polishing that synthetic composite board is carried out to 11 circulations cleaned, stacked, heating and rolling.Finally obtain the Al/4.2vol%W composite board of even particle distribution.
To the aluminium-composite tungsten material sheet material finally obtaining stretch, hardness and resistivity measurement.Room temperature uniaxial tensile test carries out on Instron5982 mechanical property testing system, and rate of extension is: 5 * 10
-4s
-1.Brinell hardness performance test, at 10mm diameter steel ball, is carried out under 500kgf load-up condition.Room temperature resistivity test is carried out in PPMS-9 Analysis of Physical system, the 4 line methods of attachment of experiment employing standard.
The room-temperature mechanical property of AMMCs of the present invention is: tensile strength >=145MPa, yield strength >=130MPa, elongation >=3.8%, Brinell hardness >=50HB, resistivity≤2.83 μ Ω cm.The concrete data of test are in Table 1.
Aluminum matrix composite mechanics and conducting performance test result that table 1 the present invention obtains
Claims (1)
1. a preparation method for aluminium-composite tungsten material, is characterized in that: the content volume ratio of tungsten in aluminium is: the pure tungsten particle enhanced aluminum-based composite material preparation method of 1.4%-4.2% is as follows:
(1) raw material is that annealed state 1060 commercial-purity aluminium sheet materials and diameter are the pure tungsten particle of 10-15 μ m;
(2) surface of aluminum plate is polished with wire brush, then with alcohol, clean, the pure tungsten uniform particles that is 0.35%-1.05% by volume ratio is layered between two aluminium sheets, after two sheet materials are stacked, puts into retort furnace, and Heating temperature is 280-350 ℃, heat and on milling train, be rolled after 5-20 minute, in the process of rolling, do not use lubricating oil, roll speed is 0.4-0.8m/s, and draught is 50%, after rolling completes, air cooling is to room temperature, and above process is the first passage rolling;
Composite sheet after the first passage rolling is cut off from centre, with steel brush and alcohol, plate surface is polished, cleaned respectively, the even lay pure tungsten particle identical with first inferior quality between two sheet materials after cut-out, its heating, rolling are identical with the first passage, repeat shearing, polishing cleaning, lay pure tungsten particle, stack, heat and be rolling to the 4th passage, synthesizing tungsten volume ratio is aluminium-composite tungsten material sheet material of 1.4%-4.2%;
(3) do not adding under the condition of pure tungsten particle, shearing, the polishing that above-mentioned synthetic aluminium-composite tungsten material sheet material is carried out to 11 circulations according to the method described above cleaned, stacked, heating and rolling.
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| CN103773983B (en) * | 2014-01-09 | 2015-11-25 | 安泰科技股份有限公司 | Partinium and preparation method thereof |
| CN104561854A (en) * | 2015-02-01 | 2015-04-29 | 桂林理工大学 | Preparation method of aluminum-titanium composite material |
| CN104878342A (en) * | 2015-05-18 | 2015-09-02 | 广东省工业技术研究院(广州有色金属研究院) | Method and device for preparing tungsten powder reinforced aluminum matrix composite |
| CN105013821B (en) * | 2015-07-02 | 2017-07-11 | 哈尔滨工程大学 | Nanoscale twins mutually strengthen the accumulation ply rolling preparation method of TiNi based alloy composite boards |
| CN104988440A (en) * | 2015-07-29 | 2015-10-21 | 桂林理工大学 | Preparation method of aluminum-TC4 titanium alloy composite material applied in production of unmanned aerial vehicle skin |
| CN105908020B (en) * | 2016-05-17 | 2017-09-26 | 广东省材料与加工研究所 | A kind of preparation method of aluminium composite tungsten material |
| CN106216395B (en) * | 2016-08-08 | 2018-09-21 | 武汉大学 | A method of preparing alumina particle reinforced aluminum matrix composites |
| CN112391563B (en) * | 2019-08-19 | 2021-11-09 | 南京理工大学 | Preparation method of layered nano heterogeneous aluminum magnesium alloy block material |
| CN116871322B (en) * | 2023-09-08 | 2024-02-27 | 太原理工大学 | Preparation method of particle reinforced layered metal composite plate based on multipass rolling forming |
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Non-Patent Citations (3)
| Title |
|---|
| H.G.Tang et al..Preparation of W-Al alloys by mechanical alloying.《Journal of Alloys and Compounds》.2002,第347卷 |
| Krishan K.Chawla et al..Metal-Matrix Composites.《encyclopedia of chimical technology》.2004,第1-22页. * |
| Preparation of W-Al alloys by mechanical alloying;H.G.Tang et al.;《Journal of Alloys and Compounds》;20021231;第347卷;第228-230页 * |
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