CN102899517A - In-situ SiC-TiC particle mixing enhanced aluminum-based composite material and preparation process thereof - Google Patents
In-situ SiC-TiC particle mixing enhanced aluminum-based composite material and preparation process thereof Download PDFInfo
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- CN102899517A CN102899517A CN2012103722443A CN201210372244A CN102899517A CN 102899517 A CN102899517 A CN 102899517A CN 2012103722443 A CN2012103722443 A CN 2012103722443A CN 201210372244 A CN201210372244 A CN 201210372244A CN 102899517 A CN102899517 A CN 102899517A
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- 239000002245 particle Substances 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 239000010936 titanium Substances 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 235000013312 flour Nutrition 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000003643 water by type Substances 0.000 claims description 4
- 240000003936 Plumbago auriculata Species 0.000 claims 1
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 241000209456 Plumbago Species 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000006557 surface reaction Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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Abstract
The invention relates to the technical field of non-continuous enhanced metal-based composite materials, and in particular relates to an in-situ SiC-TiC particle mixing enhanced aluminum-based composite material and a preparation process thereof. For overcoming the defects of high preparation cost, complicated process and poor wettability and compatibility of particles and substrates in the prior art, the invention provides the in-situ SiC-TiC particle mixing enhanced aluminum-based composite material and the preparation process thereof. The preparation process comprises the following steps: firstly, preparing in-situ reaction system press cakes: dividing the designed press cakes into inner and outer layers, wherein the mass ratio of the inner layer to the outer layer is 3:10, and then pressing by a pressure machine; then, preparing Al-4.5Cu based alloy by taking pure Al and Al-50% Cu as raw materials; and finally adding the press cakes in Al-4.5Cu melt to carry out in-situ reaction. Compared with the prior art, the preparation method disclosed by the invention has the advantages that the in-situ produced SiC particles are fine and reach micron scale.
Description
Technical field:
The present invention relates to Discontinuous Reinforcement metal-base composites technical field, be specifically related to a kind of original position SiC-TiC particle hybrid composite and preparation technology thereof.
Background technology:
Particle reinforced aluminium-based (the SiC of SiC
p/ Al) matrix material is that recent two decades comes the worldwide the widest class Discontinuous Reinforcement metal-base composites of with fastest developing speed, application prospect.This matrix material has the good mechanical and physical characters such as specific tenacity height, specific modulus are high, high temperature resistant, wear-resistant, good stability of the dimension, the isotropic advantage of tool again, thereby be considered to a kind of desirable lightweight structural material, especially in the critical products such as motor vehicle engine piston, cylinder cylinder cap, cylinder body and aircraft industry, have broad application prospects.About the particle reinforced aluminium-based (SiC of SiC
p/ Al) composite manufacture technique, modal is to adopt liquid forming, concrete grammar is to adopt stirring casting method.The SiC particle that is about to anticipate joins by churned mechanically method in the molten aluminium of melting, melt is carried out cast obtains as cast condition matrix material sample after the refining degasification.The shortcoming of this method has: the size of (1) SiC particle (mostly being 50-100 μ m) bigger than normal; (2) generally need to carry out pre-treatment to the SiC particle surface; (3) to equipment having relatively high expectations of mechanical stirring device particularly, otherwise the SiC particle is reunited in matrix material seriously; (4) add a little less than the poor interface binding power that causes the two of wetting property between SiC particle and the Al matrix, easily surface reaction is occuring at the interface, generate Al
3Ti or Al
4C
3Etc. harmful phase.
In-situ particle strengthens metal-base composites because have the advantage that particle is thinner, the interface combination is stronger, few to equipment requirements and impurity is few, becomes a kind of advanced composite material that develops rapidly in recent years.The preparation that in-situ particle strengthens metal-base composites mainly is to adopt the original position synthetic technology, ultimate principle is under certain condition, rely on design of alloy, by chemical reaction occurs in aluminium alloy, the pottery or the intermetallic compound that generate one or more high rigidity, high elastic coefficient strengthen body and reach the purpose that strengthens metallic matrix.The in-situ particle that adopts at present castmethod successfully to prepare strengthens metal-base composites and strengthens body with TiB
2With TiC be main.But with TiB
2, ceramic particle is diverse is for TiC etc., the SiC particle is difficult to directly use by means of the in-situ techniques of chemical reaction synthesize, this be because between Si and the C with stronger covalent bonds, aluminium liquid is difficult to wetting carbon, need higher energy because in alloy melt, directly synthesize SiC by chemical reaction simultaneously, therefore cause its preparation very difficult.Also do not see at present the relevant report that adopts the conventional cast method to prepare original position SiC particle enhanced aluminum-based composite material.
Summary of the invention:
The present invention will provide a kind of original position SiC-TiC particle hybrid composite and preparation technology thereof, preparation cost height, complex process, particle and the matrix wettability and the poor shortcoming of consistency that exist to overcome prior art.
The problem that exists in order to overcome prior art, technical scheme provided by the invention is:
A kind of preparation technology preparation technology of original position SiC-TiC particle hybrid composite is divided into two steps:
(1) preparation of in situ reaction system briquetting:
Under the condition that Ti:C=1:1, Si:C=1:1 (mol ratio) are constant in the design briquetting, briquetting is divided into inside and outside two-layer, titanium valve and Graphite Powder 99 mixture are as the skin of briquetting, silica flour and Graphite Powder 99 mixture are as the internal layer of briquetting, and outer and internal layer mass ratio is prepared by 3:10, suppresses at pressing machine, pressure is 20MPa, dwell time is 5 minutes, and compacting is taken out briquetting after finishing from mould, and it is dry to put into loft drier;
(2) select pure Al, Al-50%Cu is preparation of raw material Al-4.5Cu matrix alloy, put into plumbago crucible, heat fused, at 1000 ℃ briquetting joined and to carry out reaction in－situ in the Al-4.5Cu alloy melt, and be pressed into melt inside with graphite rod, the briquetting quality accounts for the 3-5wt.% of matrix alloy quality, question response stirs after finishing.Be cooled to 750 ℃ and use C
2Cl
6Carry out refinery by de-gassing, leave standstill 15-20min after, pour in the metal stretching coupon model at 720 ℃, naturally cooling namely makes as cast condition in-situ composite coupon; Matrix material 535 ± 5 ℃ of insulations 9 hours, is taken out and places at once 60～100 ℃ of quenching-in waters, carry out 5 hours ageing treatment at 175 ± 5 ℃ again.
The original position SiC-TiC particle hybrid composite that the above-mentioned preparation technology of a kind of usefulness makes.
The present invention adopts the reaction in－situ technology successfully to prepare original position SiC particle and TiC particle hybrid composite, prepared matrix material and the particle reinforced aluminium-based (SiC of traditional Si C
p/ Al) matrix material is compared, and its advantage is:
(1) with add the SiC particle and prepare the SiC reinforced aluminum matrix composites and compare, generated in-situ SiC particle is more tiny, can reach submicron order;
(2) by to the design of the composition and structure of in situ reaction system, utilize titanium valve and Graphite Powder 99 to generate TiC institute liberated heat and compensate weak thermopositive reaction between Si and the C, adopt castmethod to obtain original position SiC particle.SiC delivers a child at the matrix alloy internal direct by chemical reaction, and therefore saved and anticipated, and good with the wetting property of matrix, the interface is in conjunction with stronger;
(3) SiC delivers a child at the matrix alloy internal direct by chemical reaction, only relies on the stirring of manual graphite rod can realize being evenly distributed, and very low to equipment requirements, common high temperature melting furnace can satisfy the preparation requirement.
Be evenly distributed during (4) because of reaction, SiC particle and Al matrix phase capacitive are good, and generated in-situ SiC particle is difficult for and Al matrix generation surface reaction, so seldom occurs Al in the microstructure of composite
3Ti or Al
4C
3
Description of drawings:
Fig. 1 is the structural representation of briquetting;
Fig. 2 is the metallographic structure figure of the prepared matrix material of embodiment 2;
Fig. 3 is the room temperature tensile port SEM shape appearance figure of the prepared matrix material of embodiment 2;
Fig. 4 is SiC particle and TiC particle TEM shape appearance figure in the prepared matrix material of embodiment 2;
Fig. 5 is SiC diffraction pattern figure in the prepared matrix material of embodiment 2;
Fig. 6 is TiC diffraction pattern figure in the prepared matrix material of embodiment 2.
Embodiment:
Below in conjunction with embodiment the present invention is described in detail.
Embodiment 1,
Be that ground and mixed is even in mortar for 1 silica flour (99% purity, 200 orders) and Graphite Powder 99 (99% purity, 200 orders) with mol ratio; Be that ground and mixed is even in mortar for 1 titanium valve (99% purity, 200 orders) and Graphite Powder 99 (99% purity, 200 orders) with mol ratio.Referring to Fig. 1, it is 35 millimeters moulds that two kinds of mixed powders are put into diameter, titanium valve and Graphite Powder 99 mixture are as the skin of briquetting, silica flour and Graphite Powder 99 mixture are as the internal layer of briquetting, outer mass ratio with internal layer is that 3:10(mediates silica flour and Graphite Powder 99 mixture, is the mixture of titanium valve and Graphite Powder 99 on every side).Briquetting is suppressed at pressing machine.Pressure is 20MPa, and the dwell time is 5 minutes.Compacting is taken out briquetting after finishing from mould, it is dry to put into loft drier.
Select pure Al ingot, the Al-50%Cu intermediate alloy ingot is preparation of raw material Al-4.5Cu matrix alloy, puts into plumbago crucible, heat fused at 1000 ℃, is pressed into melt inside with graphite rod with 3wt.% briquetting (the briquetting quality accounts for the 3wt.% of matrix alloy quality), question response stirs after finishing.Be cooled to 750 ℃ and use C
2Cl
6Carry out refinery by de-gassing, leave standstill 15min after, pour in the metal stretching coupon model at 720 ℃, naturally cooling namely makes as cast condition in-situ composite coupon; Matrix material 535 ± 5 ℃ of insulations 9 hours, is taken out and places at once 60 ℃ of quenching-in waters, carry out 5 hours ageing treatment at 175 ± 5 ℃ again.
The room temperature tensile the performance test results: tensile strength reaches 406MPa, and unit elongation reaches 11.3%;
Embodiment 2,
Be that ground and mixed is even in mortar for 1 silica flour (99% purity, 200 orders) and Graphite Powder 99 (99% purity, 200 orders) with mol ratio; Be that ground and mixed is even in mortar for 1 titanium valve (99% purity, 200 orders) and Graphite Powder 99 (99% purity, 200 orders) with mol ratio.It is 35 millimeters moulds that two kinds of mixed powders are put into diameter, titanium valve and Graphite Powder 99 mixture are as the skin of briquetting, silica flour and Graphite Powder 99 mixture are as the internal layer of briquetting, outer mass ratio with internal layer is that 3:10(mediates silica flour and Graphite Powder 99 mixture, is the mixture of titanium valve and Graphite Powder 99 on every side).Briquetting is suppressed at pressing machine.Pressure is 20MPa, and the dwell time is 5 minutes.Compacting is taken out briquetting after finishing from mould, it is dry to put into loft drier.Select pure Al ingot, the Al-50%Cu intermediate alloy ingot is preparation of raw material Al-4.5Cu matrix alloy, put into plumbago crucible, heat fused, at 1000 ℃, with graphite rod 5wt.% briquetting ((the briquetting quality accounts for the 5wt.% of matrix alloy quality)) is pressed into melt inside, question response stirs after finishing.Be cooled to 750 ℃ and use C
2Cl
6Carry out refinery by de-gassing, leave standstill 20min after, pour in the metal W tensile test bar model at 720 ℃, naturally cooling namely makes as cast condition in-situ composite coupon; Matrix material 535 ± 5 ℃ of insulations 9 hours, is taken out and places at once 60 ℃ of quenching-in waters, carry out 5 hours ageing treatment at 175 ± 5 ℃ again.
The room temperature tensile the performance test results: tensile strength reaches 428MPa, and unit elongation reaches 8.9%.
In the metallographic structure figure of the matrix material that embodiment 2 is prepared, room temperature tensile port SEM shape appearance figure, the matrix material in SiC particle and TiC particle TEM shape appearance figure, the matrix material in SiC diffraction pattern figure, the matrix material TiC diffraction pattern figure referring to Fig. 1-Fig. 6.
Claims (2)
1. the preparation technology of an original position SiC-TiC particle hybrid composite, described preparation technology is divided into two steps:
1) preparation of in situ reaction system briquetting:
Under the condition that Ti:C=1:1, Si:C=1:1 (mol ratio) are constant in the design briquetting, briquetting is divided into inside and outside two-layer, titanium valve and Graphite Powder 99 mixture are as the skin of briquetting, silica flour and Graphite Powder 99 mixture are as the internal layer of briquetting, and outer and internal layer mass ratio is prepared by 3:10, suppresses at pressing machine, pressure is 20MPa, dwell time is 5 minutes, and compacting is taken out briquetting after finishing from mould, and it is dry to put into loft drier;
2) select pure Al, Al-50%Cu is preparation of raw material Al-4.5Cu matrix alloy, put into plumbago crucible, heat fused, at 1000 ℃ briquetting joined and to carry out reaction in－situ in the Al-4.5Cu alloy melt, and be pressed into melt inside with graphite rod, the briquetting quality accounts for the 3-5wt.% of matrix alloy quality, after question response finishes, stir, be cooled to 750 ℃ and carry out refinery by de-gassing with C2Cl6, after leaving standstill 15-20min, pour in the metal stretching coupon model at 720 ℃, naturally cooling namely makes as cast condition in-situ composite coupon; Matrix material 535 ± 5 ℃ of insulations 9 hours, is taken out and places at once 60～100 ℃ of quenching-in waters, carry out 5 hours ageing treatment at 175 ± 5 ℃ again.
2. original position SiC-TiC particle hybrid composite that the preparation technology who utilizes a kind of original position SiC-TiC particle hybrid composite claimed in claim 1 makes.
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|---|---|---|---|
| CN201210372244.3A CN102899517B (en) | 2012-09-29 | 2012-09-29 | In-situ SiC-TiC particle mixing enhanced aluminum-based composite material and preparation process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141063A (en) * | 2014-07-31 | 2014-11-12 | 重庆大学 | Preparing method of in-situ synthesis titanium carbide enhanced titanium-based multi-hole materials |
| CN109182802A (en) * | 2018-11-12 | 2019-01-11 | 华北电力大学（保定） | A kind of carbon material enhancing copper/aluminum matrix composite preparation method |
| CN112692295A (en) * | 2020-12-11 | 2021-04-23 | 迈特李新材料(深圳)有限公司 | Aluminum-based nano composite material powder for 3D printing and preparation method thereof |
| CN114318435A (en) * | 2021-12-31 | 2022-04-12 | 西安工业大学 | Aluminum-based composite material with internal stress adjusting function and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094451A (en) * | 1993-04-28 | 1994-11-02 | 航空航天工业部第六二一研究所 | Directly contact reaction method is produced the method for metal-base composites |
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2012
- 2012-09-29 CN CN201210372244.3A patent/CN102899517B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094451A (en) * | 1993-04-28 | 1994-11-02 | 航空航天工业部第六二一研究所 | Directly contact reaction method is produced the method for metal-base composites |
Non-Patent Citations (2)
| Title |
|---|
| 李大奎等: "Al-Si熔体中原位生成SiC颗粒的研究", 《特种铸造及有色合金》 * |
| 梁艳峰等: "铸造Al-4.5%Cu合金熔体中TiCp的合成反应研究", 《铸造》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141063A (en) * | 2014-07-31 | 2014-11-12 | 重庆大学 | Preparing method of in-situ synthesis titanium carbide enhanced titanium-based multi-hole materials |
| CN104141063B (en) * | 2014-07-31 | 2015-12-09 | 重庆大学 | A kind of fabricated in situ titanium carbide strengthens the preparation method of titanium based porous materials |
| CN109182802A (en) * | 2018-11-12 | 2019-01-11 | 华北电力大学（保定） | A kind of carbon material enhancing copper/aluminum matrix composite preparation method |
| CN112692295A (en) * | 2020-12-11 | 2021-04-23 | 迈特李新材料(深圳)有限公司 | Aluminum-based nano composite material powder for 3D printing and preparation method thereof |
| CN112692295B (en) * | 2020-12-11 | 2021-09-10 | 迈特李新材料(深圳)有限公司 | Aluminum-based nano composite material powder for 3D printing and preparation method thereof |
| CN114318435A (en) * | 2021-12-31 | 2022-04-12 | 西安工业大学 | Aluminum-based composite material with internal stress adjusting function and preparation method thereof |
| CN114318435B (en) * | 2021-12-31 | 2023-08-29 | 西安工业大学 | Aluminum-based composite material with internal stress adjusting function and preparation method thereof |
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