CN106756192A - A kind of magnetochemistry method for preparing super modeling aluminum matrix composite in situ - Google Patents
A kind of magnetochemistry method for preparing super modeling aluminum matrix composite in situ Download PDFInfo
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- CN106756192A CN106756192A CN201611163923.4A CN201611163923A CN106756192A CN 106756192 A CN106756192 A CN 106756192A CN 201611163923 A CN201611163923 A CN 201611163923A CN 106756192 A CN106756192 A CN 106756192A
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- magnetic field
- reaction
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- composite material
- magnetochemistry
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
- C22C1/1052—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites by mixing and casting metal matrix composites with reaction
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The present invention relates to a kind of method of the preparation with superplastic endogenous granular reinforced aluminum base composite material in situ under magnetic fields.The method includes being adjusted to reacting initial temperature after aluminium base melt is refined, and adding can carry out synthetic reaction with the reactant of melt in situ reaction generation particle phase, and reaction stands after terminating, is down to pouring temperature and poured into a mould；It is characterized in that：Apply magnetic field during being synthesized, synthesis has superplastic endogenous granular reinforced aluminum base composite material under realizing magnetic fields.Described magnetic field is：Strong pulsed magnetic field.In the methods of the invention, magnetic field catalysis accelerates reaction in-situ, refines grain graininess, improves decentralization.The thermodynamic condition of magnetochemistry improved effect reaction in-situ, had not only accelerated reaction in-situ speed but also had controlled growing up for particle phase, so that material has superplasticity.
Description
Technical field
The present invention relates to a kind of preparation method for technical field of composite materials, specifically a kind of magnetochemistry is in situ
The method for preparing super modeling aluminum matrix composite.
Background technology
In-situ composite（In-situ Composites）For preparing particles reiforced metal-base composition.This skill
Art is, from metallic matrix situ forming core, the thermodynamically stable phase grown up, therefore reinforcement surface no-pollution, to keep away due to reinforcement
The problem bad with matrix compatibility is exempted from, interface bond strength is high.Such technology is described as with breakthrough new technology
Extremely pay attention to, it has also become Metal Substrate（Particularly aluminium base）A new heat in composite research.Wherein, melting-reaction method be by
Solid particle or powder containing enhancing particle formation element are added in the aluminum or aluminum alloy of melting at a certain temperature, are allowed to
Fully reaction, so as to prepare endogenous granular reinforced aluminum base composite material, and can directly pour into a mould complex-shaped casting.Thus, tool
There are process is simple, low cost, cycle is short, the industrialized production that is easy to, and be considered as can realize industrial applications new
One of technology.But, the technology of conventional melting-reaction method fabricated in situ aluminum matrix composite is perfect not enough, there is reactant
System less, course of reaction should not control, strengthen the scale topography of particle it is inconsistent, strengthen particle easily reunite, strengthen particle in matrix
In distribution it is not uniform enough the problems such as.
In recent years, controlled in particular with magnetic field using physical means and promote the process of chemical reaction, and thus produced
Given birth to a new science --- magnetochemistry, magnetochemistry is combined with material science, using magnetic field effect improve materials synthesis or
The efficiency of preparation, the performance of improvement material are increasingly taken seriously, and are turning into one important development side of investigation of materials
To.It is taken seriously according to getting over, and is turning into one important developing direction of investigation of materials.According to the applicant understood, China is special
Profit：CN167664lA（Publication date：2005.10.5, denomination of invention：The magnetic chemical reaction for preparing metal-base nanometer composite material is former
Position synthetic method）Propose in magnetic field（Steady magnetic field, alternating magnetic field and pulsed magnetic field）Under carry out In-situ Magnetization and be synthesized, should
The method that patent is introduced has extraordinary effect in terms of refinement enhancing particle.Chinese patent CN101391291A（Invention name
Claim：A kind of method of metal matrix composition home-position synthesizing under combined electric magnetic field）Proposition carries out reaction in-situ under combination field
Synthesis, the method obtains particle and more effectively thinning effect and has reached and be preferably uniformly distributed effect.But, above-mentioned patent is carried
The method control process of confession is more complicated, and the composite prepared is poor in terms of plasticity.To make up above-mentioned deficiency, this hair
The bright new method for proposing the original position synthesis particle reinforced aluminum matrix composites under magnetochemistry effect.
The content of the invention
The present invention has that reaction system is few, course of reaction should not be controlled for method for preparing aluminum-based composite material in the prior art
System, enhancing particle scale topography is inconsistent, enhancing particle easily reunites, strengthens that particle distribution in the base is not uniform etc. enough to ask
A kind of topic, there is provided magnetochemistry preparation method for preparing super modeling aluminum matrix composite in situ, makes its in-situ preparation under magnetic fields
Aluminum matrix composite.Reinforcement can be prepared using the present invention to be more evenly distributed, preferably enhancing aluminium base is combined with matrix and is answered
Condensation material.Can be with simple and direct, low cost prepares new aluminum matrix composite and its part, and the method be adapted to it is large batch of
Industrial production.
Technical scheme is characterised by mainly including magnetic chemical reaction synthetic technology aspect
Matrices of composite material alloy such as fine aluminium or its alloy are melted in the ceramics or graphite crucible of electrical induction device,
Heating-up temperature is that matrix alloy liquid is refined, after standing, by what is mixed according to a certain ratio more than the alloy melting point 200~300 DEG C
Reactant is added in Matrix Solution by conduit, and applies externally-applied magnetic field, and externally-applied magnetic field is strong pulsed magnetic field, makes reaction additional
Magnetochemistry synthesis is carried out under magnetic fields, is stirred with stirring rod, until reaction terminates, the reaction time is 30~50min.By force
The electromagnetic parameter scope of pulsed magnetic field is：Pulse current frequency 0.1Hz~10Hz, pulse current density is 1kA/m2~10 kA/
M2, charging voltage：1kv ~ 20kV, hub of a spool 0.5 ~ 20T of magnetic field intensity, about 30s is once；Carried out while magnetic chemical reaction
Insulation, holding temperature is identical with reaction temperature, differential responses system, and reaction temperature is different；After reaction terminates, 10min is stood.Pour
In entering the water cooled mo(u)ld of quick cooling, so as to prepare interior raw nanoparticle reinforced aluminum-based composite block.
Aluminum matrix composite superplastic deformation temperature T obtained in the method<560 DEG C, elongation percentage>200%th, strain rate ε>
0.001/s, realizes the superplasticity under low temperature.
Specific embodiment
Implement row 1
Raw material：Commercial-purity aluminium 2124, purity is 98% industrial borax (Na2B4O7.10H2O) pulvis and potassium fluorozirconate
(K2ZrF6), agent of skimming
(1) Metal Melting is carried out first and prepared by powder：
Industrial 2124 fine aluminiums, 10Kg melts in electric furnace and is warmed up to 850 DEG C.Agents useful for same borax and potassium fluorozirconate are at 200 DEG C
Lower drying is ground, and wears into fine powder (granularity is less than 100 μm), and stand-by after weighing, the weight of addition is borax 0.2Kg, potassium fluorozirconate
(borax compares 29 to 0.49Kg with the weight of potassium fluorozirconate:71)
(2) it is synthesized：
After melt temperature is qualified, initial refining is carried out, band guarantor is poured into molten metal that is good and meeting temperature requirement (850 DEG C) is refined
In the fusant reaction synthesizer of temperature function, solid reactant powder is pressed into bell jar in melt.Unbalanced pulse magnetic field, adjusts arteries and veins
The parameter in magnetic field is rushed for frequency 1HZ, inductor central magnetic field intensity 5T, pulse current density is 3kA/m2, charging voltage：5kv.
Magnetic field is closed after magnetic fields 40min, after solution temperature is down to 730 DEG C, slagging-off is poured into the water cooled mo(u)ld of quick cooling, is obtained
Alumina particle reinforced aluminum matrix composites casting.Sample drawn is tested, and at 400 DEG C, elongation percentage, up to 423%, is room temperature
60 times.
Implement row 2
Raw material：Industrial 2124 fine aluminiums, solid powder：Industrial carbonic acid zirconium (Zr (CO3)2) pulvis (purity is 99.20%), refining
Degasser and agent of skimming
(1) prepared by Metal Melting and powder：
2124 fine aluminium 5Kg of industry are melted in 25kw crucible type resistance furnaces and are warmed up to 870 DEG C, and degassing is skimmed.Agents useful for same exists
Fully dried at 250 DEG C~300 DEG C, wherein Zr (CO3)2Grind to form stand-by, Zr after fine powder (granularity is less than 100 μm) is weighed
(CO3)2The weight of addition is the 10% of weight metal（Note：The theoretical volume fraction 13.68vol% of particle phase）
(2) it is synthesized
After melt temperature is qualified, initial refining is carried out, refining well and meeting temperature requirement（870℃）Molten metal be poured into band protect
In the fusant reaction synthesizer of temperature function, solid reactant Zr (CO are pressed into bell jar in melt3)2Powder.Unbalanced pulse magnetic
, the parameter for adjusting pulsed magnetic field is frequency 2Hz, inductor central magnetic field intensity 10T, and pulse current density is 6kA/m2, fill
Piezoelectric voltage：10kv.Magnetic field is closed after magnetic fields 30min, after solution temperature is down to 780 DEG C, slagging-off pours into the water of quick cooling
In chill, alumina particle reinforced aluminum matrix composites casting is obtained.Sample drawn is tested, at 430 DEG C, elongation percentage
479%, it is 73 times of room temperature.
Claims (4)
1. it is in situ under a kind of magnetic fields to prepare the super method for moulding aluminum matrix composite, including will be adjusted to after the refining of aluminium base melt
Reacting initial temperature, adding can carry out synthetic reaction with the reactant of melt in situ reaction generation particle phase, and question response terminates, quiet
Poured into a mould after putting pouring temperature；It is levied and is：Apply magnetic field during being synthesized, synthesis is interior under realizing magnetic fields
Raw particles reiforced metal-base composition.
2. the method for the synthesizing aluminum-based composite material described in claim 1, it is characterized in that：Externally-applied magnetic field is strong pulsed magnetic field, is made
Reaction carries out magnetochemistry synthesis under additional magnetic fields, is stirred with stirring rod, until reaction terminates, the reaction time is 30
~50min.
3. the method for the synthesizing aluminum-based composite material described in claim 1, it is characterized in that：Externally-applied magnetic field is strong pulsed magnetic field, by force
The electromagnetic parameter scope of pulsed magnetic field is：Pulse current frequency 0.1Hz~10Hz, pulse current density is 1kA/m2~10 kA/m2,
Charging voltage：1kv ~ 20kV, 0.5 ~ 20T of hub of a spool magnetic field intensity.
4. the method for the synthesizing aluminum-based composite material described in claim 1, it is characterized in that：Superplastic deformation temperature T<560 DEG C, prolong
Stretch rate>200%th, strain rate ε>0.001/s.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881029A (en) * | 2019-03-20 | 2019-06-14 | 上海大学 | A kind of Ni prepared using magnetic field3Al matrix composite alloy and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05171312A (en) * | 1991-12-25 | 1993-07-09 | Takao Cho | Production of aluminum composite material in situ by blowing gaseous nitrogen under controlled oxygen |
| CN1676641A (en) * | 2005-03-31 | 2005-10-05 | 江苏大学 | Magnetic chemical reaction in-situ synthesizing method for preparing metal base nano composite material |
| CN101704075A (en) * | 2009-11-13 | 2010-05-12 | 江苏大学 | Method for synthesizing aluminum-based composite material by multielement magnetic field combined fusant reaction |
| CN101760656A (en) * | 2009-12-29 | 2010-06-30 | 江苏大学 | Energy-saving and short-flow manufacturing method of wheel hub with in situ particle reinforced A356 matrix composite material |
| CN101948978A (en) * | 2010-10-12 | 2011-01-19 | 江苏大学 | Preparation method of Al2O3 nanoparticle reinforced aluminum-based composite material |
| CN102121076A (en) * | 2011-02-15 | 2011-07-13 | 江苏大学 | Method for synthetizing particle reinforced metal matrix composite material in pulsed electric field |
| CN102140599A (en) * | 2011-02-15 | 2011-08-03 | 江苏大学 | Method for synthesizing particle reinforced composite material under composite action of current and magnetic field |
| CN102994814A (en) * | 2012-11-22 | 2013-03-27 | 江苏大学 | Mixed particle reinforced wear-resisting aluminum matrix composite which is generated in-situ in magnetic field and preparation method thereof |
-
2016
- 2016-12-16 CN CN201611163923.4A patent/CN106756192A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05171312A (en) * | 1991-12-25 | 1993-07-09 | Takao Cho | Production of aluminum composite material in situ by blowing gaseous nitrogen under controlled oxygen |
| CN1676641A (en) * | 2005-03-31 | 2005-10-05 | 江苏大学 | Magnetic chemical reaction in-situ synthesizing method for preparing metal base nano composite material |
| CN101704075A (en) * | 2009-11-13 | 2010-05-12 | 江苏大学 | Method for synthesizing aluminum-based composite material by multielement magnetic field combined fusant reaction |
| CN101760656A (en) * | 2009-12-29 | 2010-06-30 | 江苏大学 | Energy-saving and short-flow manufacturing method of wheel hub with in situ particle reinforced A356 matrix composite material |
| CN101948978A (en) * | 2010-10-12 | 2011-01-19 | 江苏大学 | Preparation method of Al2O3 nanoparticle reinforced aluminum-based composite material |
| CN102121076A (en) * | 2011-02-15 | 2011-07-13 | 江苏大学 | Method for synthetizing particle reinforced metal matrix composite material in pulsed electric field |
| CN102140599A (en) * | 2011-02-15 | 2011-08-03 | 江苏大学 | Method for synthesizing particle reinforced composite material under composite action of current and magnetic field |
| CN102994814A (en) * | 2012-11-22 | 2013-03-27 | 江苏大学 | Mixed particle reinforced wear-resisting aluminum matrix composite which is generated in-situ in magnetic field and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881029A (en) * | 2019-03-20 | 2019-06-14 | 上海大学 | A kind of Ni prepared using magnetic field3Al matrix composite alloy and preparation method thereof |
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