CN1376805A - High-strength in-situ Al-base composition - Google Patents
High-strength in-situ Al-base composition Download PDFInfo
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- CN1376805A CN1376805A CN 01106345 CN01106345A CN1376805A CN 1376805 A CN1376805 A CN 1376805A CN 01106345 CN01106345 CN 01106345 CN 01106345 A CN01106345 A CN 01106345A CN 1376805 A CN1376805 A CN 1376805A
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Abstract
A high-strength in-situ Al-base composition is composed of in-situ generated Al2O3, dispersed TiB2 and Al as basic body. It is prepared through vacuum sintering of the mixture of Al, TiO2 and B powder at 780-860 deg.C for 0.2-1 hr, cooling to 560-620 deg.c, pressure compacting under 50-150 MPa, and extruding shaping. Its advantages are high strength and better plasticity and toughness.
Description
The present invention relates to metallic substance, a kind of high-strength in-situ growth ceramic particle reinforced aluminum matrix composites is provided especially.
In recent years, for improving the interface compatibility between ceramic enhancement phase and the aluminum substrate or avoiding serious surface reaction, the growth in situ ceramic-phase reinforced body/aluminum-matrix composite materials obtains extensive concern.Yet the in-situ Al-base composition that adopts present normally used reaction system (aluminium-titanium-carbon, aluminium-titanium-boron) to produce all contains compd A l between the friable metal of some amount usually
3Ti (Scripta Metall.Mater., vol.24, No.5 (1990), 873-878 and Mater.Sci.Eng., vol.A131, No. (1991), 69-76).This mainly is because employed ti powder is thicker, surfactivity is poor, is subjected to the influence of kinetic factors such as Elements Diffusion like this, and the reaction between titanium and the boron is difficult to carry out thoroughly, because aluminium is a large amount of the existence in matrix, the reaction between aluminium and the titanium is difficult to avoid like this.Compd A l between friable metal
3Ti can produce extremely adverse influence to intensity, plasticity and the toughness of matrix material.
The object of the present invention is to provide a kind of high-strength in-situ Al-base composition and preparation method thereof, it has high intensity and good plasticity, toughness, can be used for various requirement high strength, high-modulus occasion.
The invention provides a kind of high-strength in-situ Al-base composition, it is characterized in that: the aluminium sesquioxide that this matrix material is formed by original position, TiB2 dispersed granules and aluminum substrate are formed, dispersed granules is of a size of the 0.01-5.0 micron, the volume total content of original position wild phase is at 0.05-0.50, and wherein the mol ratio of aluminium sesquioxide and TiB2 is 2: (3 ± 0.15).
The present invention also provides the preparation method of above-mentioned high-strength in-situ Al-base composition, it is characterized in that process is as follows:
Adopt physical mechanical method to make the aluminum or aluminum alloy of 10-150 μ m, the titanium dioxide of 0.5-5 μ m and the boron powder uniform mixing of 0.5-6 μ m, the weight ratio of aluminum or aluminum alloy, titanium dioxide and boron is 78.8: 3.7: 1 to 5.8: 3.7: 1;
After the mixed powder cold compaction 10
-3Bake out progressively under the holder vacuum condition; 560-600 ℃ of hot pressing to the 75-85% theoretical density; Be warming up to then 780-860 ℃ of vacuum sintering 0.2-1 hour; Be cooled to 560-620 ℃ subsequently and under 50-150MPa pressure, add densificationization;
The hot pressing ingot at 400-480 ℃ with 5: 1-50: 1 extrusion ratio extrusion molding.
Original position aluminium sesquioxide that test shows obtained and TiB2 dispersed granules reinforced aluminum matrix composites have the favorable mechanical performance.
The present invention has designed a brand-new reaction system, aluminium-titanium dioxide-boron.In this system, thermite reaction at first takes place in aluminium and titanium dioxide, generates aluminium sesquioxide and displaces titanium, and titanium further generates TiB2 with the boron reaction.Because the TiO 2 particles size is extremely tiny and be very uniformly and distribute in system, and the titanium that displaces has very high activity, and the reaction between titanium and the boron can fully be carried out like this.When the weight ratio of titanium dioxide and boron is 3.7: 1 (mol ratio is 1: 2), compd A l between friable metal not only
3The formation of Ti is suppressed, and generated in-situ aluminium sesquioxide and TiB2 size of particles are very tiny.Same document (Int.J.Powder, vol.27, No.3 (1991), 227-235 and Scripta Metall.Mater., vol.29, No.2 (1993), the data that 225-22) provide are compared and can be found, under identical wild phase volume fraction (20vol.%) condition, the silicon-carbide particle that the tensile strength (353MPa) of original position aluminium sesquioxide and the compound enhancing aluminum composite of TiB2 dispersed granules is higher than the powder method preparation far away strengthens aluminium (200MPa) and silicon carbide whisker enhancing aluminium (278MPa).Significantly improved the intensity of aluminum substrate by above comparative descriptions original position aluminium sesquioxide and TiB2 dispersed granules.Have reason to believe that original position aluminium sesquioxide and TiB2 dispersed granules strengthen aluminium and as a kind of novel high-strength matrix material wide application prospect can be arranged.
Below by embodiment in detail the present invention is described in detail.
Embodiment 1
The titanium diboride dispersed and strengthened aluminum composite manufacturing process of 10.5vol.% aluminium sesquioxide and 9.5vol.%: with weight ratio is that 17.9: 3.7: 1 aluminium, titanium dioxide and boron powder mixes with high energy ball mill method, after the cold compaction 10
-3Bake out progressively under the holder vacuum condition at 600 ℃ of hot pressing to 80% theoretical densities, was warming up to 830 ℃ of sintering 0.3 hour then, be cooled to 600 ℃ subsequently and under 100MPa pressure, add densificationization, the hot pressing ingot at 420 ℃ with extrusion ratio extrusion molding in 20: 1.The room temperature tensile intensity of gained material is 353MPa, has not improved 243% with respect to strengthening aluminium, is 163MPa 300 ℃ tensile strengths, room temperature Young's modulus 100GPa.
Comparative example 1
The fixing add-on of titanium dioxide in aluminium-titanium dioxide-boron system, reduce the add-on of boron, the weight ratio that makes titanium dioxide and boron powder is 5.5: 1 (mol ratio is 3: 4), under identical preparation process condition, prepared matrix material also contains the Al of 7.9vol.% except that containing 10.5vol.% aluminium sesquioxide and 6.3vol.% TiB2
3Ti, the room temperature tensile intensity of this matrix material is 311MPa.
Comparative example 2
The fixing add-on of titanium dioxide in aluminium-titanium dioxide-boron system, the add-on that reduces boron is to zero, and under identical preparation process condition, prepared matrix material also contains the Al of 23.7vol.% except that containing the 10.5vol.% aluminium sesquioxide
3Ti, the room temperature tensile intensity of this matrix material is 145MPa.
Embodiment 2
The titanium diboride dispersed and strengthened aluminum composite manufacturing process of 5.3vol.% aluminium sesquioxide and 4.7vol.%: with weight ratio is that 38.2: 3.7: 1 aluminium, titanium dioxide and boron powder mixes with high energy ball mill method, after the cold compaction 10
-3Bake out progressively under the holder vacuum condition at 590 ℃ of hot pressing to 78% theoretical densities, was warming up to 850 ℃ of sintering 0.2 hour then, be cooled to 590 ℃ subsequently and under 120MPa pressure, add densificationization, the hot pressing ingot at 400 ℃ with extrusion ratio extrusion molding in 22: 1.The room temperature tensile intensity of gained material is 190MPa, has not improved 84% with respect to strengthening aluminium.
Embodiment 3
The titanium diboride dispersed and strengthened Al-4Cu alloy-base composite material of 10.5vol.% aluminium sesquioxide and 9.5vol.% manufacturing process: with weight ratio is that 18.5: 3.7: 1 Al-4Cu, titanium dioxide and boron powder mixes with high energy ball mill method, after the cold compaction 10
-3Bake out progressively under the holder vacuum condition at 580 ℃ of hot pressing to 75% theoretical densities, was warming up to 840 ℃ of sintering 0.15 hour then, be cooled to 570 ℃ subsequently and under 150MPa pressure, add densificationization, the hot pressing ingot at 450 ℃ with extrusion ratio extrusion molding in 25: 1.The room temperature tensile intensity of gained material is 482MPa, has improved 120%, room temperature Young's modulus 105GPa with respect to REINFORCED Al-4Cu not.
Claims (2)
1, a kind of high-strength in-situ Al-base composition, it is characterized in that: the aluminium sesquioxide that this matrix material is formed by original position, TiB2 dispersed granules and aluminum substrate are formed, dispersed granules is of a size of the 0.01-5.0 micron, the volume total content of original position wild phase is at 0.05-0.50, and wherein the mol ratio of aluminium sesquioxide and TiB2 is 2: (3 ± 0.15).
2, the preparation method of the described high-strength in-situ Al-base composition of a kind of claim 1 is characterized in that process is as follows:
Adopt physical mechanical method to make the aluminum or aluminum alloy of 10-150 μ m, the titanium dioxide of 0.5-5 μ m and the boron powder uniform mixing of 0.5-6 μ m, the weight ratio of aluminum or aluminum alloy, titanium dioxide and boron is 78.8: 3.7: 1 to 5.8: 3.7: 1;
After the mixed powder cold compaction 10
-3Bake out progressively under the holder vacuum condition; 560-600 ℃ of hot pressing to the 75-85% theoretical density; Be warming up to then 780-860 ℃ of vacuum sintering 0.2-1 hour; Be cooled to 560-620 ℃ subsequently and under 50-150MPa pressure, add densificationization;
The hot pressing ingot at 400-480 ℃ with 5: 1-50: 1 extrusion ratio extrusion molding.
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| CNB011063459A CN1161483C (en) | 2001-03-23 | 2001-03-23 | High-strength in-situ Al-base composition |
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Cited By (13)
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| CN100376700C (en) * | 2005-01-19 | 2008-03-26 | 江苏大学 | AI-Zr-B-O reacting system for synthesizing high-performance aluminium-base copmosite material in-situ and synthetic material thereof |
| CN100412216C (en) * | 2005-06-10 | 2008-08-20 | 西安工业学院 | High-strength thermal-insulating hybrid particles reinforced aluminum-base composite materials and composite preparation process therefor |
| CN1683093B (en) * | 2004-04-16 | 2010-04-14 | 住友金属工业株式会社 | Tool for thermal processing |
| CN101914734A (en) * | 2010-08-25 | 2010-12-15 | 天津大学 | Method for preparing spinel whisker/aluminum composite block material by in-situ growth in aluminum matrix |
| CN102534314A (en) * | 2012-01-19 | 2012-07-04 | 山东大学 | Lanthanum-hexaboride-reinforced aluminum-silicon-base composite material and preparation method thereof |
| CN104060128B (en) * | 2014-06-30 | 2016-05-25 | 安徽相邦复合材料有限公司 | Original position ZrB2, ALN aluminium based composite material enhanced by miscellaneous granules and preparation method thereof |
| CN107099689A (en) * | 2017-05-11 | 2017-08-29 | 武汉轻工大学 | A kind of Al of reaction in-situ generation2O3The preparation method of particle enhanced aluminum-based composite material |
| CN107747007A (en) * | 2017-10-27 | 2018-03-02 | 黄林海 | A kind of high-strength corrosion-resisting Al alloy composite |
| CN107760933A (en) * | 2017-09-11 | 2018-03-06 | 南京航空航天大学 | A kind of 3D printing strengthens Al alloy powder and preparation method thereof with in-situ nano complex phase ceramic |
| CN108080815A (en) * | 2017-06-12 | 2018-05-29 | 吉林大学 | A kind of novel nano pottery aluminium Al-alloy welding wire and preparation method |
| CN108817384A (en) * | 2018-06-28 | 2018-11-16 | 北京理工大学 | A kind of preparation method of core-shell structure particles reinforced aluminum matrix composites |
| CN108998717A (en) * | 2018-07-27 | 2018-12-14 | 合肥岑遥新材料科技有限公司 | A kind of metal matrix ceramic composites and preparation method thereof |
| CN110144478A (en) * | 2019-04-26 | 2019-08-20 | 江苏大学 | A kind of preparation facilities and method of high tough nanoparticle reinforced aluminum-based composite |
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| CN1312306C (en) * | 2005-09-22 | 2007-04-25 | 上海交通大学 | In-situ grain reinforced anticorrosive cast composite aluminium-base material |
| CN1312305C (en) * | 2005-09-22 | 2007-04-25 | 上海交通大学 | In-situ grain reinforced high temperature aluminium base composite material |
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- 2001-03-23 CN CNB011063459A patent/CN1161483C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683093B (en) * | 2004-04-16 | 2010-04-14 | 住友金属工业株式会社 | Tool for thermal processing |
| CN100376700C (en) * | 2005-01-19 | 2008-03-26 | 江苏大学 | AI-Zr-B-O reacting system for synthesizing high-performance aluminium-base copmosite material in-situ and synthetic material thereof |
| CN100412216C (en) * | 2005-06-10 | 2008-08-20 | 西安工业学院 | High-strength thermal-insulating hybrid particles reinforced aluminum-base composite materials and composite preparation process therefor |
| CN101914734A (en) * | 2010-08-25 | 2010-12-15 | 天津大学 | Method for preparing spinel whisker/aluminum composite block material by in-situ growth in aluminum matrix |
| CN101914734B (en) * | 2010-08-25 | 2011-12-07 | 天津大学 | Method for preparing spinel whisker/aluminum composite block material by in-situ growth in aluminum matrix |
| CN102534314A (en) * | 2012-01-19 | 2012-07-04 | 山东大学 | Lanthanum-hexaboride-reinforced aluminum-silicon-base composite material and preparation method thereof |
| CN104060128B (en) * | 2014-06-30 | 2016-05-25 | 安徽相邦复合材料有限公司 | Original position ZrB2, ALN aluminium based composite material enhanced by miscellaneous granules and preparation method thereof |
| CN107099689A (en) * | 2017-05-11 | 2017-08-29 | 武汉轻工大学 | A kind of Al of reaction in-situ generation2O3The preparation method of particle enhanced aluminum-based composite material |
| CN108080815A (en) * | 2017-06-12 | 2018-05-29 | 吉林大学 | A kind of novel nano pottery aluminium Al-alloy welding wire and preparation method |
| CN107760933A (en) * | 2017-09-11 | 2018-03-06 | 南京航空航天大学 | A kind of 3D printing strengthens Al alloy powder and preparation method thereof with in-situ nano complex phase ceramic |
| CN107747007A (en) * | 2017-10-27 | 2018-03-02 | 黄林海 | A kind of high-strength corrosion-resisting Al alloy composite |
| CN108817384A (en) * | 2018-06-28 | 2018-11-16 | 北京理工大学 | A kind of preparation method of core-shell structure particles reinforced aluminum matrix composites |
| CN108817384B (en) * | 2018-06-28 | 2020-11-17 | 北京理工大学 | Preparation method of core-shell structure particle reinforced aluminum matrix composite |
| CN108998717A (en) * | 2018-07-27 | 2018-12-14 | 合肥岑遥新材料科技有限公司 | A kind of metal matrix ceramic composites and preparation method thereof |
| CN110144478A (en) * | 2019-04-26 | 2019-08-20 | 江苏大学 | A kind of preparation facilities and method of high tough nanoparticle reinforced aluminum-based composite |
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