CN108330340A - A kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers - Google Patents
A kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers Download PDFInfo
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- CN108330340A CN108330340A CN201810213438.6A CN201810213438A CN108330340A CN 108330340 A CN108330340 A CN 108330340A CN 201810213438 A CN201810213438 A CN 201810213438A CN 108330340 A CN108330340 A CN 108330340A
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
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Abstract
The invention discloses a kind of preparation methods of graphene reinforced aluminum matrix composites micrometer fibers, and belonging to graphene enhances compound micrometer fibers field.The invention solves prior powder metallurgy techniques cannot achieve the evenly dispersed of graphene nanometer sheet, leads to problems such as to reunite and be orientated mixed and disorderly there are graphene sheet layer in composite material.The method of the present invention：One, interface regulation and control heat treatment is carried out to rodlike as cast condition graphene reinforced aluminum matrix composites, is polishing to uniform diameter, polishes, obtain bar；Two, corrosion treatment, washing drying are carried out to one end of bar；Three, it is subsequently placed in drawing mould, is installed in draw-off gear, carry out cold drawing processing, during cold drawing, every 5~10 passage carries out an interface enhancing heat treatment, and every 1~2 passage is once made annealing treatment；Four, it is made annealing treatment under inert atmosphere, that is, obtains the micrometer fibers.The composite material consistency of the present invention is high, and reinforcement is evenly distributed, form is controllable, and mechanical property improves.
Description
Technical field
The invention belongs to graphenes to enhance compound micrometer fibers field；Enhance aluminum-base composite material more particularly to a kind of graphene
Expect the preparation method of micrometer fibers.
Background technology
Graphene reinforced aluminum matrix composites are a kind of novel metal base composite woods with excellent mechanical and physical property
Material.In recent years, MEMS is quickly grown, and wide application prospect is shown in fields such as artificial intelligence, it is desirable that used
Carrier material has the characteristics that structure-function integration, high performance, small-sized.Graphene reinforced aluminum matrix composites system
Standby microfiber material has wide as a kind of high performance structural function integration material in micro electro mechanical system field
Application prospect.
It realizes graphene being uniformly distributed in aluminum substrate, is the pass in prepared by graphene reinforced aluminum matrix composites batch
Key problem.At present using in the graphene reinforced aluminum matrix composites block materials of powder metallurgy process preparation, often there is stone
Black alkene reunites, is distributed the problems such as mixed and disorderly, reduces the reinforcing efficiency of graphene.It is by the method for mechanical processing that bulk is compound
Material is processed into small-size materials, and the nonuniform organization phenomenon and existing defect in small-size materials can seriously affect material
Performance.The control that reinforcement distribution and defect state are realized in small size graphene reinforced aluminum matrix composites is
Urgent problem to be solved at present.
By carrying out retrieval discovery, a kind of patent " preparation side of circle aluminum matrix composite silk material to existing technical literature
Method " (application number：201611091431.9) using cleaved, welding, hot-drawn to rolling particle enhanced aluminum-based composite material plank
It the techniques such as pulls out and prepares circular cross-section (diameter is less than 5mm) particle enhanced aluminum-based composite material.Single anneal is used in above-mentioned patent
Technique, material total deformation is less than normal, not applicable to graphene reinforced metal-matrix composite, can not achieve the effective of graphene
Dispersion.Patent " a kind of graphene/copper composite material and preparation method thereof " application number：201510118008.2), made with ethyl alcohol
For ball-milling medium, corronil powder is uniformly mixed with flaky graphite using wet ball grinding, by powder metallurgy and subsequent thermal
It squeezes, milling method prepares graphite reinforced composite block, silk material and plank." a kind of graphene enhancing is Ni-based compound for patent
Material and preparation method thereof " (application number：201610214707.1), graphene oxide/nickel is prepared using the method for solution reduction
Composite granule prepares composite material block, silk material and band by reduction treatment, powder metallurgy and hot extrusion and hot rolling process
Material.Above-mentioned patent obtains nano-metal particle and graphene in composite granule preparation process using chemical reduction method
Mixed powder, or mixed powder is prepared to obtain uniform graphene dispersion, to stone in composite material using ball-milling technology
The follow-up regulation and control of black alkene reinforcement distribution do not relate to.
Invention content
The invention solves prior powder metallurgy techniques cannot achieve the evenly dispersed of graphene nanometer sheet, leads to composite wood
Reunite there are graphene sheet layer in material and be orientated the problems such as mixed and disorderly.The invention discloses a kind of using interface enhancing heat treatment, cold
The method that block graphene/aluminum composite material is prepared into fiber by drawing and intermediate annealing process.
In view of the above-mentioned problems, a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers of the present invention is to press
State step progress：
Step 1: carrying out interface regulation and control heat treatment to rodlike as cast condition graphene reinforced aluminum matrix composites, then it is polishing to
Uniform diameter, then sanding and polishing, obtain bar；
Step 2: one end progress corrosion treatment for the bar that step 1 is obtained, until the part being corroded can pass through drawing
Mold, washing drying, obtains drawing blank；
Step 3: then drawing blank is placed in drawing mould, it is installed in draw-off gear, carries out cold drawing processing,
During cold drawing, every 5~10 passage carries out an interface enhancing heat treatment, and every 1~2 passage is once made annealing treatment；
Step 4: then being made annealing treatment under the conditions of inert atmosphere protection, that is, obtain the micrometer fibers；
Wherein, in rodlike as cast condition graphene reinforced aluminum matrix composites described in step 1 reinforced phase graphene content≤
10vol.%, matrix can be one kind in fine aluminium or each line aluminium alloy, and the as cast condition graphene reinforced aluminum matrix composites exist
Elongation percentage is higher than 5% at room temperature.
It further limits, interface regulation and control heat treatment described in step 1 carries out under the conditions of inert atmosphere protection, temperature
Control is at 600~630 DEG C, and time control is in 0.5~3h.
It further limits, step 1 carries out sanding and polishing to sample surfaces step by step using sand paper, and polishing process is using distillation
Water is cooled down, and uniform diameter, surface flawless, cut are polished to, i.e. surface roughness is better than Ra0.2.
It further limits, corrosion treatment described in step 2 is carried out using chemical attack, and the length of corrosion area is big
In d+20mm (d be hot candied mold thickness), in order to after corrode one end across drawing mould, the corrosive agent of chemical attack
It is by sulfuric acid (mass fraction 98%), phosphoric acid (mass fraction 85%), nitric acid (mass fraction 68%), hydrofluoric acid (mass fraction
40%) and distilled water is formulated；Per in 100ml corrosive liquids, the dosage of sulfuric acid (mass fraction 98%) is 10 ± 1ml, phosphorus
The dosage of sour (mass fraction 85%) is 28 ± 1ml, and the dosage of nitric acid (mass fraction 68%) is 2 ± 0.5ml, hydrofluoric acid (matter
Measure score 40%) 8 ± 1ml, surplus is distilled water.The temperature of corrosion treatment described in step 2 is controlled at 30-80 DEG C, is corroded
Ultrasonic wave added is carried out in journey, the ultrasonic power is 300 ± 100W, and supersonic frequency is 30 ± 5KHz, is taken after corroding a period of time
Go out, using miking diameter, the difference according to green diameter and aimed dia determines suitable etching time.
It further limits, drawing mould described in step 3 is drawn using Nano diamond CVD (chemical vapor deposition) coating
Silk mold, 12 °~16 ° of mold modular angle；Drawing process uses MoS2Lubricating grease (main component MoS2And polyalphaolefin) moistened
It is sliding.
It further limits, the heat treatment of interface enhancing described in step 3 carries out under the conditions of inert atmosphere protection, heat
At 600~630 DEG C, soaking time is controlled in 0.5~3h for treatment temperature control.
It further limits, drawing speed described in step 3 is 80~100mm/min, and drawing deformation for a pass is (i.e.：Single track
Secondary area of section reduction amount) 10%~30%.
It further limits, annealing described in step 3 carries out under the conditions of inert atmosphere protection, when containing for graphene
When amount is 0~3vol.%, annealing temperature is 300 ± 10 DEG C, and annealing time is 0.5~1h；As graphene content 3vol.%
When~6vol.%, using 400 ± 10 DEG C of temperature, annealing time is 0.5~1h；When graphene content 6vol.%~
When 10vol.%, using 500 ± 10 DEG C of temperature, annealing time is 0.5~1h.
Further limit, in step 3 the determination of drawing final state be according toCalculating equivalent strain, (wherein, ε is
Equivalent strain, S0It is accumulated for initial cross-section, S is final state sectional area).For graphene content be 0~3vol.%, it is desirable that etc. effects
Become and is not less than 4；For graphene content 3vol.%~6vol.%, equivalent strain is not less than 6；For graphene content
6vol.%~10vol.%, equivalent strain are not less than 8.
It further limits, annealing described in step 4 carries out under the conditions of inert atmosphere protection, and annealing temperature control exists
150 DEG C~300 DEG C, annealing time is controlled in 0~1h,.
Further limit, above-mentioned inert atmosphere be argon gas atmosphere, nitrogen atmosphere, nitrogen and hydrogen mixed atmosphere and nitrogen
One kind in gas and methanol mixed atmosphere, nitrogen volume content is 70 ± 2% in mixed atmosphere.
Rodlike as cast condition graphene reinforced aluminum matrix composites determine initial passage cold drawing spike pulling according to cold drawing mold size
Shape diameter, cuts.
The hardening of part cold drawing composite processing is eliminated by the annealing of step 4, improves composite fiber modeling
Property.
The present invention is prepared for graphene nanometer sheet and reunites without apparent by using cold drawing and intermediate heat-treatment technique
And the graphene nanometer sheet reinforced aluminum matrix composites of aligned transfer are orientated, and reinforcement equally distributed a diameter of hundreds of is micro-
The graphene reinforced aluminum matrix composites fiber of meter ruler cun, composite material consistency of the invention is high, reinforcement is evenly distributed,
Form is controllable, and mechanical property improves.
Description of the drawings
Fig. 1 is drawing state 1vol.% and 5vol%GNP/Al composite fiber macro morphology figure；Fig. 2 is drawing state
The stereoscan photograph of 1vol.% GNP/Al and 5vol.%GNP/Al composite fiber surface topographies；Fig. 3 is a diameter of
Scanning electron microscope after 150 microns of drawing state 1vol.%GNP/Al and 5vol.%GNP/Al composite fiber Cross section polishings is aobvious
Micro-assembly robot；Fig. 4 be 1vol.%GNP/Al composite material drawings before with after drawing tensile strength compare.
Specific implementation mode
Specific implementation mode one：The content of graphene is in as cast condition graphene reinforced aluminum matrix composites in present embodiment
1vol%, matrix are fine aluminium, and elongation percentage is 23 ± 2% at room temperature.According to cold drawing mold size, initial passage cold drawing is determined
Spike pulling shape sample diameter is cut into rodlike, diameter of phi=3mm；The preparation method of graphene reinforced aluminum matrix composites micrometer fibers
It carries out in the steps below：
Step 1: by rodlike as cast condition graphene reinforced aluminum matrix composites argon gas atmosphere protection, temperature be 630 DEG C of conditions
Lower progress interface regulation and control heat treatment 0.5h, then uses sand paper to carry out sanding and polishing to sample surfaces step by step, polishing process uses
Distilled water is cooled down, and uniform diameter, surface flawless, cut are polished to, i.e. surface roughness is better than Ra0.2, obtains stick
Material；
Step 2: using the one end for the bar that chemical corrosion method obtains step 1 in 50 DEG C, ultrasonic power 300W
Corrosion treatment is carried out under the conditions of being 30KHz with supersonic frequency, until the part being corroded can pass through drawing mould, corrosion treatment
It is taken out after corroding a period of time in journey, using miking diameter, determines and close according to the difference of green diameter and aimed dia
Suitable etching time, washing drying, obtains drawing blank；
The corrosive agent of chemical attack described in step 2 is by sulfuric acid (mass fraction 98%), phosphoric acid (mass fraction
85%), nitric acid (mass fraction 68%), hydrofluoric acid (mass fraction 40%) and distilled water are formulated；Corrode per 100ml
In liquid, the dosage of sulfuric acid (mass fraction 98%) is 10ml, the dosage of phosphoric acid (mass fraction 85%) is 28ml, nitric acid (matter
Measure score 68%) dosage be 2ml, hydrofluoric acid (mass fraction 40%) 8ml, surplus is distilled water.
Step 3: then drawing blank is placed in drawing mould, be installed in draw-off gear, carry out cold drawing handle to
ε equivalent strains are 6.0, and during cold drawing, every 5 passage carries out an interface enhancing heat treatment, and every 2 passage carries out primary
Annealing；
The heat treatment of interface enhancing described in step 3 carries out under argon gas atmosphere protective condition, heat treatment temperature control
At 630 DEG C, soaking time is controlled in 0.5h；The drawing speed is 100mm/min, and drawing deformation for a pass is (i.e.：Single pass
Area of section reduction amount) 20%；The annealing carries out under argon gas atmosphere protective condition, and annealing temperature is 300 DEG C, is moved back
The fiery time is 0.5h；
Step 4: then making annealing treatment 0.5h under the conditions of argon gas atmosphere protection, temperature are 200 DEG C, that is, obtain described micro-
Rice fiber；
Wherein, drawing mould described in step 3 is to use Nano diamond CVD (chemical vapor deposition) coating drawing die,
15 ° of mold modular angle；Drawing process uses MoS2Lubricating grease (main component MoS2And polyalphaolefin) be lubricated.
It is heat-treated and anneals in present embodiment and carried out in resistance furnace.
Specific implementation mode two：The content of graphene is in as cast condition graphene reinforced aluminum matrix composites in present embodiment
5vol%, matrix are fine aluminium, and elongation percentage is 15 ± 2% at room temperature, according to cold drawing mold size, determines initial passage cold drawing
Spike pulling shape sample diameter is cut into rodlike, diameter of phi=3mm；The preparation method of graphene reinforced aluminum matrix composites micrometer fibers
It carries out in the steps below：
Step 1: by rodlike as cast condition graphene reinforced aluminum matrix composites argon gas atmosphere protection, temperature be 630 DEG C of conditions
Lower progress interface regulation and control heat treatment 0.5h, then uses sand paper to carry out sanding and polishing to sample surfaces step by step, polishing process uses
Distilled water is cooled down, and uniform diameter, surface flawless, cut are polished to, i.e. surface roughness is better than Ra0.2, obtains stick
Material；
Step 2: using the one end for the bar that chemical corrosion method obtains step 1 in 50 DEG C, ultrasonic power 300W
Corrosion treatment is carried out under the conditions of being 30KHz with supersonic frequency, until the part being corroded can pass through drawing mould, corrosion treatment
It is taken out after corroding a period of time in journey, using miking diameter, determines and close according to the difference of green diameter and aimed dia
Suitable etching time, washing drying, obtains drawing blank；
The corrosive agent of chemical attack described in step 2 is by sulfuric acid (mass fraction 98%), phosphoric acid (mass fraction
85%), nitric acid (mass fraction 68%), hydrofluoric acid (mass fraction 40%) and distilled water are formulated；Corrode per 100ml
In liquid, the dosage of sulfuric acid (mass fraction 98%) is 10ml, the dosage of phosphoric acid (mass fraction 85%) is 28ml, nitric acid (matter
Measure score 68%) dosage be 2ml, hydrofluoric acid (mass fraction 40%) 8ml, surplus is distilled water.
Step 3: then drawing blank is placed in drawing mould, be installed in draw-off gear, carry out cold drawing handle to
ε equivalent strains are 6.0, and during cold drawing, every 5 passage carries out an interface enhancing heat treatment, and every 1 passage carries out primary
Annealing；
The heat treatment of interface enhancing described in step 3 carries out under argon gas atmosphere protective condition, heat treatment temperature control
At 630 DEG C, soaking time is controlled in 0.5h；The drawing speed is 100mm/min, and drawing deformation for a pass is (i.e.：Single pass
Area of section reduction amount) 20%；The annealing carries out under argon gas atmosphere protective condition, and annealing temperature is 400 DEG C, is moved back
The fiery time is 0.5h；
Step 4: then making annealing treatment 0.5h under the conditions of argon gas atmosphere protection, temperature are 200 DEG C, that is, obtain described micro-
Rice fiber；
Wherein, drawing mould described in step 3 is to use Nano diamond CVD (chemical vapor deposition) coating drawing die,
15 ° of mold modular angle；Drawing process uses MoS2Lubricating grease (main component MoS2And polyalphaolefin) be lubricated.
It is heat-treated and anneals in present embodiment and carried out in resistance furnace.
Using following experimental verification invention effects：
Cold drawing is carried out after carrying out interface enhancing heat treatment to the GNP/Al composite materials that content is 1vol% and 5vol%
Deformation.Technological parameter is：Green diameter Φ 3mm, 150 microns of final state diameter, equivalent strain 6.0；Interface enhancing is heat-treated work
Skill is：Using inert atmosphere protection resistance furnace, 630 ± 5 DEG C, 0.5h；Cold drawing pass deformation~20%, every 1~2 passage
(1vol.% composite materials be every 2 passage, 5vol.% composite materials be every 1 passage) using inert atmosphere protection resistance furnace into
Row annealing is (for 300 ± 5 DEG C, 0.5h of 1vol% composite materials, for 5vol% composite materials：400 ± 5 DEG C,
0.5h)；Every 5 passage carries out an interface enhancing heat treatment (using inert atmosphere protection resistance furnace, 630 ± 5 DEG C, 0.5h).
1vol.%GNP/Al the and 5vol%GNP/Al composite fiber macro morphologies of a diameter of 150 microns of drawing states
See Fig. 1.Fig. 1 shows that drawing state composite material micrometer fibers are continuous, surface has metallic luster.
The stereoscan photograph of drawing state 1vol.%GNP/Al and 5vol.%GNP/Al composite fiber surface topography
See Fig. 2.As shown in Figure 2, drawing state composite material micrometer fibers surface is smooth, flawless and the defects of scratch.
After a diameter of 150 microns of drawings state 1vol.%GNP/Al and 5vol.%GNP/Al composite fiber Cross section polishing
Scanning electron microscope microscopic structure see Fig. 3.Black region is the graphene in composite material in Fig. 3.Fig. 3 shows drawing state
The defects of in 1vol.%GNP/Al and 5vol.%GNP/Al composite fibers without hole, graphene sheet layer is along drawing side
It is arranged to being oriented in, no large scale aggregate.
See Fig. 4 with the tensile strength comparison after drawing before 1vol.%GNP/Al composite material drawings.Fig. 4 shows that drawing becomes
After shape, the tensile strength of composite material is significantly improved.The promotion of composite material tensile strength is attributed to stone in drawing process
The improvement of black alkene lamella distribution and the raising for strengthening effect.
Claims (10)
1. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, it is characterised in that the preparation method be by
What following step carried out：
Step 1: carrying out interface regulation and control heat treatment to rodlike as cast condition graphene reinforced aluminum matrix composites, it is then polishing to diameter
Uniformly, then sanding and polishing, bar is obtained；
Step 2: one end progress corrosion treatment for the bar that step 1 is obtained, until the part being corroded can pass through drawing mould,
Washing drying, obtains drawing blank；
Step 3: then drawing blank is placed in drawing mould, it is installed in draw-off gear, cold drawing processing is carried out, cold
In drawing process, every 5~10 passage carries out an interface enhancing heat treatment, and every 1~2 passage is once made annealing treatment；
Step 4: then being made annealing treatment under the conditions of inert atmosphere protection, that is, obtain the micrometer fibers；
Wherein, in rodlike as cast condition graphene reinforced aluminum matrix composites described in step 1 graphene content≤10vol.%, room
The lower elongation percentage of temperature is higher than 5%.
2. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
The interface regulation and control heat treatment described in step 1 carries out under the conditions of inert atmosphere protection, and temperature is controlled at 600~630 DEG C,
Time control is in 0.5~3h.
3. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
It is better than Ra0.2 in step 1 sanding and polishing to surface roughness.
4. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
The corrosion treatment described in step 2 is carried out using chemical attack, and the corrosive agent of chemical attack is by sulfuric acid (mass fraction
98%), phosphoric acid (mass fraction 85%), nitric acid (mass fraction 68%), hydrofluoric acid (mass fraction 40%) and distilled water are prepared
Made of；In per 100ml corrosive liquids, the dosage of sulfuric acid (mass fraction 98%) is 10 ± 1ml, phosphoric acid (mass fraction 85%)
Dosage is 28 ± 1ml, and the dosage of nitric acid (mass fraction 68%) is 2 ± 0.5ml, hydrofluoric acid (mass fraction 40%) 8 ± 1ml,
Surplus is distilled water；The temperature of corrosion treatment described in step 2 is controlled at 30~80 DEG C, and ultrasonic wave added, institute are carried out in corrosion process
It is 300 ± 100W to state ultrasonic power, and supersonic frequency is 30 ± 5KHz.
5. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
The drawing mould described in step 3 is to use Nano diamond CVD coating drawing dies, 12 °~16 ° of mold modular angle；Drawing process
Using MoS2Lubricating grease is lubricated.
6. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
The interface enhancing heat treatment described in step 3 carries out under the conditions of inert atmosphere protection, and heat treatment temperature is controlled 600
~630 DEG C, soaking time is controlled in 0.5~3h.
7. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
The drawing speed described in step 3 is 80~100mm/min, and drawing deformation for a pass is 10%~30%.
8. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
It anneals described in step 3 and is carried out under the conditions of inert atmosphere protection, when the content of graphene is 0~3vol.%,
Annealing temperature is 300 ± 10 DEG C, and annealing time is 0.5~1h；As graphene content 3vol.%~6vol.%, using temperature
400 ± 10 DEG C of degree, annealing time is 0.5~1h；As graphene content 6vol.%~10vol.%, using temperature 500 ±
10 DEG C, annealing time is 0.5~1h.
9. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
In step 3 the determination of drawing final state be according toEquivalent strain is calculated, ε is equivalent strain, S0It is accumulated for initial cross-section,
S is final state sectional area；It is 0~3vol.% for graphene content, it is desirable that equivalent strain ε is not less than 4；For graphene content
3vol.%~6vol.%, equivalent strain ε are not less than 6；For graphene content 6vol.%~10vol.%, equivalent strain ε is not
Less than 8.
10. a kind of preparation method of graphene reinforced aluminum matrix composites micrometer fibers, feature exist according to claim 1
It anneals described in step 4 and is carried out under the conditions of inert atmosphere protection, annealing temperature is controlled at 150 DEG C~300 DEG C, annealing
Time control is in 0~1h.
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| CN109680176A (en) * | 2019-03-01 | 2019-04-26 | 北京工业大学 | A kind of graphene enhancing magnesium-based composite material and preparation method thereof |
| CN109680176B (en) * | 2019-03-01 | 2020-08-28 | 北京工业大学 | Graphene reinforced magnesium-based composite material and preparation method thereof |
| CN110095449A (en) * | 2019-04-26 | 2019-08-06 | 中国航发北京航空材料研究院 | A kind of analysis method of metal-base composites median surface mechanical behavior |
| CN110095449B (en) * | 2019-04-26 | 2022-03-15 | 中国航发北京航空材料研究院 | Analysis method for interface mechanical behavior in metal matrix composite |
| CN115302193A (en) * | 2022-07-11 | 2022-11-08 | 西北工业大学 | Preparation method of GNPs/Al composite material wire with radial gradient distribution performance |
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