CN1215089A - In-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material - Google Patents
In-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material Download PDFInfo
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- CN1215089A CN1215089A CN 97119072 CN97119072A CN1215089A CN 1215089 A CN1215089 A CN 1215089A CN 97119072 CN97119072 CN 97119072 CN 97119072 A CN97119072 A CN 97119072A CN 1215089 A CN1215089 A CN 1215089A
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 8
- HEEIGRFVWYEWNA-UHFFFAOYSA-N [Si].[Si].[Mg] Chemical compound [Si].[Si].[Mg] HEEIGRFVWYEWNA-UHFFFAOYSA-N 0.000 title claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 5
- 239000011777 magnesium Substances 0.000 claims description 44
- 239000011159 matrix material Substances 0.000 claims description 27
- 229910052749 magnesium Inorganic materials 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000000155 melt Substances 0.000 claims description 12
- 239000011856 silicon-based particle Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 239000006025 fining agent Substances 0.000 claims description 9
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 235000011164 potassium chloride Nutrition 0.000 claims description 8
- 239000001103 potassium chloride Substances 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- -1 CaCl 2 Substances 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 238000007499 fusion processing Methods 0.000 claims description 2
- 159000000000 sodium salts Chemical group 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 5
- 239000004411 aluminium Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 239000012745 toughening agent Substances 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000005303 weighing Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- XZWYZXLIPXDOLR-UHFFFAOYSA-N metformin Chemical compound CN(C)C(=N)NC(N)=N XZWYZXLIPXDOLR-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000009716 squeeze casting Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to an in-situ authigenic magnesium disilicon particle-reinforced aluminium-base composite material and its preparation technology. Said composite material mainly is formed from 10-60% of MgzSi reinforcing phase and the rest aluminium. Its preparation is characterized by adding toughening agent which is one or several kinds of Sr, Si, SiO2, Ti and Ni in the course of melting, and its added quantity is 3-10% of melting body. Said invention possesses high specific strength and high-temp. strength, low cost and simple preparation method, and can use existent casting-moulding process and equipment.
Description
The present invention relates to the metal-base composites field, a kind of Mg of in-situ authigenic is provided especially
2Si particle non-continuous reinforced aluminium-based composite material and technology of preparing thereof.
Discontinuous enhancing metal-base composites compare with its matrix metal have the intensity height, excellent mechanical property such as rigidity height, heat-resisting, wear-resisting, creep resistance, and its price is lower, therefore easily processing and recycling have wide application prospect in aerospace and civilian industry.The processing method of producing discontinuous enhancing metal-base composites at present mainly contains following several:
1. powder metallurgic method: with the matrix metal powder with strengthen body (particle or whisker) through after mixing, adopt method moulding such as hot pressing, hot extrusion or hot isostatic pressing, its technology is complicated, and insufficient formability, cost are higher relatively.
2.XD method: be that two kinds of elements that can react are joined in the matrix metal by processes such as mixing, compacting, sintering, ceramic enhancement phase forms in sintering process, and this technology is comparatively complicated, the cost height.
3. squeeze casting method: at first make the prefabricated component of definite shape strengthening body, utilize pressure that liquid metal is infiltrated up in the prefabricated component and coagulation forming is produced matrix material, this processing requirement particle and liquid metal have good wettability, otherwise are difficult to obtain even imporous matrix material.
4. ventilation in-situ authigenic method: with C or N chemical reaction can take place and generate gas or the N that feeding in the matrix alloy melt of stablize ceramic phase can decomposite carbon containing
2Gas reacts both and generates hard enhancing body.Though this technology has been used the notion of reaction in, but owing to produce more obnoxious flavour (especially H2 gas) after feeding decomposing gas, make performance of composites can not get guaranteeing, and require temperature of reaction higher, consuming time more for obtaining abundant particle wild phase, so production cost is higher.In addition, in the composition design of conventional aluminum alloy, avoid the high silicon of high magnesium to occur simultaneously in alloy, this is because the high silicon of high magnesium in the aluminium alloy can produce large-sized erose Mg as far as possible
2The Si particle has a strong impact on the performance of material.
The object of the present invention is to provide a kind of in-situ authigenic Mg
2Si particle enhanced aluminum-based composite material and technology of preparing thereof, it has higher specific tenacity and hot strength, and is cheap, and its preparation method is simple, practical, can utilize existing cast shaping process and equipment.
The invention provides a kind of in-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material, it is characterized in that this matrix material is mainly by 10～60% synthesized Mg
2The Al of Si wild phase and surplus forms.Mg
2The amount of Si is 20～35% best.Mg provided by the present invention
2The Si particle enhanced aluminum-based composite material has high specific strength and hot strength, and this mainly depends on its technology of preparing.
The invention provides the technology of preparing of above-mentioned magnesium two silicon particle intensifying aluminum based compound materials, carry out according to following step:
--with matrix alloy Al heat fused, superheating temperature requires 150～400K;
--Si is added in the melt, to all fusings;
--Mg is added in the melt, to all fusings;
--after insulation 3～15min, add fining agent;
--behind insulation 20～45min, add degasifier and stir;
--technology burns cast-type routinely;
It is characterized in that: after Mg all melts, add the malleableize agent, the malleableize agent is Sr, Si, SiO
2, among Ti, the Ni one or more, add-on is 3～10% (except that specializing, all being weight percentage) of melt amount.
Should be noted that the Mg of preparation high specific strength
2Si particulate reinforced composite, key are the malleableize matrixes, so that wild phase and matrix play one's part to the full.The malleableize matrix must be at Mg
2Adding an amount of malleableize agent in the Si/Al system could obtain, and in technology in the past, fails to find suitable malleableize agent always.
Suppress Mg by in melt, adding fining agent in addition
2The forming core of Si particle in condensing process and growing up, thus reach refinement Mg
2The Si particulate is done in order to improve the performance of material.Fining agent used in the present invention is sodium salt NaCl, Na
2SO
4, NaF, Na
2CO
3, Na
2SO
3, sylvite KCl, K
2SO
4, KF, K
2CO
3, K
2SO
3One or more of refractory metal Ti, Ni, red phosphorus, phosphide, add-on is 3～8% of a melt amount.
In order to prevent the scaling loss of Mg, can in fusion process, add the insulating covering agent of melt amount 3～4%, insulating covering agent is KCl, CaCl
2, NaCl a kind of.
The present invention has compared following significant advantage with present prior art:
1. spontaneous wild phase and matrix bond are good, have avoided problems such as surface reaction, and it is evenly distributed in matrix.Because Mg
2Si particle original position in the melt solidifying process generates, and has avoided adding the segregation phenomena that particle exists, thereby has made the intensity of material and modulus that by a relatively large margin improvement be arranged.
2. because Mg
2Si density only is 1.88g/cm
3, so the material specific tenacity is higher.Contain 30% volume fraction Mg
2The aluminum matrix composite of Si reduces about 10% than existing Al/Si piston alloy weight.
3. can adopt existing technology and equipment.Other preparation composite technology of mentioning among the present invention all will done bigger change on the alloy melting basis at present, and preparation method of the present invention can utilize existing equipment and means, very easily promotes.
4. technology is simple, is easy to enlarge produce.Because the present invention organically combines the generation alloy of wild phase and melting casting cycle, simplified preparation technology, thereby laid a good foundation for metal-base composites scale operation.
5. low cost of raw materials helps applying in civilian industry.Al, Mg, Si that the present invention selects are cheap material, and these starting material are early with large-scale commercial, thereby the matrix material price is descended significantly, lay a good foundation for metal-base composites steps into the civilian goods application market.
6. the prepared matrix material of the present invention is recycled easily.Because the Mg that the present invention generates
2The Si particle all is fused in reflow process in the matrix, and therefore in the melt back process, not segregation of particle is not grown up.When utilizing again,, adjust the content that it strengthens body only according to the performance requriements of workpiece.
7. on the matrix material basis that the present invention obtains, the high-performance multi-element composite material can also further be prepared, as Al/Mg
2Si/CF etc.
Below by embodiment in detail the present invention is described in detail.
Embodiment 1
Produce 15wt%Mg
2The Si matrix material is pressed Al: Mg
2Si be take by weighing industrial pure Al at 85: 15, (Al-9.5wt% Mg-5.4wt%Si), takes by weighing the malleableize agent by 8% of weight alloy again, and its proportioning is 1: 10: 5 Sr, Si and SiO for Mg, Si
2Industrial pure Al added in the crucible melts, add Si, Mg successively at 1023～1123K, treat all fusings after, add the malleableize agent at 1123K, behind the insulation 15min, add the fining agent that accounts for gross weight 5% at 1023～1123K, the fining agent proportioning is 10: 6: 1: 1 NaCl, NaF, Ti powder and KCl.Be incubated 30 minutes, then add degasifier (hexachloroethane) and stir, remove lime-ash, be cast in the metal mold, obtain the bar-shaped matrix material of φ 20 * 100mm.Room temperature as cast condition intensity is 329MPa, and unit elongation is 8.3%.
Embodiment 2
Produce 25 wt%Mg
2The Si matrix material is pressed Al: Mg
2Si be take by weighing industrial pure Al at 75: 25, (Al-9.5wt% Mg-5.4wt%Si), takes by weighing the malleableize agent by 4% of weight alloy again, and its proportioning is 1: 1: 5: 1 Sr, Si, SiO for Mg, Si
2And Ti.Industrial pure Al added in the crucible melt, add Si, Mg successively at 1023～1123K, add an amount of insulating covering agent then, the bath surface that will contact with air covers.After treating all fusings, add the malleableize agent at 1123K, behind the insulation 10min, add the fining agent that accounts for gross weight 15% at 1023K, the fining agent proportioning is 12: 6: 2: 1 NaCl, NaF, Ti powder and KCl.Be incubated 40 minutes, then add degasifier (hexachloroethane) and stir, remove lime-ash, be cast in the metal mold, obtain the bar-shaped matrix material of book 20 * 100mm.Room temperature as cast condition intensity is 188MPa, and unit elongation is 1.2%.Because the enhanced granule phase volume fraction accounts for 30% in this material, therefore under hot environment, still can keep higher intensity, be the desirable equivalent material of existing Al-Si alloy.
Embodiment 3
Produce 20wt%Mg
2The Si matrix material is pressed Al: Mg
2Si takes by weighing industrial pure Al at 80: 20, Mg, and Si takes by weighing the malleableize agent by 1% of weight alloy again.Melting and preparation technology are the same, the bar-shaped matrix material that obtains, and room temperature strength 314MPa, unit elongation are 5%.
Embodiment 4
Produce 18wt%Mg
2The Si matrix material is pressed Al: Mg
2Si takes by weighing industrial pure Al at 82: 18, Mg, and Si takes by weighing the malleableize agent by 5% of weight alloy again, and its proportioning is 1: 10 Ni and SiO
2Melting and preparation technology are the same, the bar-shaped matrix material that obtains, and room temperature strength 322MPa, unit elongation are 5.6%.
Claims (5)
1. in-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material is characterized in that this matrix material is mainly by 10～60% Mg
2The Al of Si wild phase and surplus forms.
2. according to described magnesium two silicon particle intensifying aluminum based compound materials of claim 1, it is characterized in that Mg
2The amount of Si is 20～35%.
3. the preparation of a claim 1,2 described magnesium two silicon particle intensifying aluminum based compound materials, carry out according to following step:
--with matrix alloy Al heat fused, superheating temperature requires 150～400K;
--Si is added in the melt, to all fusings;
--Mg is added in the melt, to all fusings;
--after insulation 3～15min, add fining agent;
--behind insulation 20～45min, add degasifier and stir;
--technology burns cast-type routinely;
It is characterized in that: after Mg all melts, add the malleableize agent, the malleableize agent is Sr, Si, SiO
2, among Ti, the Ni one or more, add-on is 3～10% of a melt amount.
4. according to the preparation of described magnesium two silicon particle intensifying aluminum based compound materials of claim 3, it is characterized in that fining agent is sodium salt NaCl, Na
2SO
4, NaF, Na
2CO
3, Na
2SO
3, sylvite KCl, K
2SO
4, KF, K
2CO
3, K
2SO
3, one or more of metal Ti, Ni, red phosphorus, phosphide, add-on is 3～8% of a melt amount.
5. according to the preparation of described magnesium two silicon particle intensifying aluminum based compound materials of claim 3, it is characterized in that adding in the fusion process insulating covering agent of melt amount 3～4%, insulating covering agent is KCl, CaCl
2, NaCl a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97119072 CN1215089A (en) | 1997-10-22 | 1997-10-22 | In-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97119072 CN1215089A (en) | 1997-10-22 | 1997-10-22 | In-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1215089A true CN1215089A (en) | 1999-04-28 |
Family
ID=5175166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97119072 Pending CN1215089A (en) | 1997-10-22 | 1997-10-22 | In-situ self-growing magnesium disilicon grain reinforced aluminium-base composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1215089A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781720B (en) * | 2009-12-28 | 2011-05-04 | 西安理工大学 | Preparation method of Mg2Si reinforced magnesium alloy |
| CN103924136A (en) * | 2014-04-18 | 2014-07-16 | 吉林万丰奥威汽轮有限公司 | Aluminum alloy material for automobile hub |
| CN105087990A (en) * | 2015-08-19 | 2015-11-25 | 华南理工大学 | Combined treating method for modified Mg2Si/Fe-rich aluminum matrix composite texture |
| CN105992833A (en) * | 2014-02-11 | 2016-10-05 | 布鲁内尔大学 | A high strength cast aluminium alloy for high pressure die casting |
| CN110819917A (en) * | 2019-11-20 | 2020-02-21 | 天津大学 | Method for in-situ synthesis of high-length-diameter ratio whisker reinforced aluminum matrix composite by hot isostatic pressing |
-
1997
- 1997-10-22 CN CN 97119072 patent/CN1215089A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781720B (en) * | 2009-12-28 | 2011-05-04 | 西安理工大学 | Preparation method of Mg2Si reinforced magnesium alloy |
| CN105992833A (en) * | 2014-02-11 | 2016-10-05 | 布鲁内尔大学 | A high strength cast aluminium alloy for high pressure die casting |
| CN105992833B (en) * | 2014-02-11 | 2019-08-27 | 伦敦布鲁内尔大学 | High-intensitive cast aluminium alloy for high pressure die casting |
| CN103924136A (en) * | 2014-04-18 | 2014-07-16 | 吉林万丰奥威汽轮有限公司 | Aluminum alloy material for automobile hub |
| CN103924136B (en) * | 2014-04-18 | 2016-06-08 | 吉林万丰奥威汽轮有限公司 | A kind of aluminum alloy for automobile wheel hub material |
| CN105087990A (en) * | 2015-08-19 | 2015-11-25 | 华南理工大学 | Combined treating method for modified Mg2Si/Fe-rich aluminum matrix composite texture |
| CN110819917A (en) * | 2019-11-20 | 2020-02-21 | 天津大学 | Method for in-situ synthesis of high-length-diameter ratio whisker reinforced aluminum matrix composite by hot isostatic pressing |
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