CN110724842B - High-strength and high-toughness carbon nano tube reinforced aluminum composite material with non-uniform structure and preparation method thereof - Google Patents

High-strength and high-toughness carbon nano tube reinforced aluminum composite material with non-uniform structure and preparation method thereof Download PDF

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CN110724842B
CN110724842B CN201911043948.4A CN201911043948A CN110724842B CN 110724842 B CN110724842 B CN 110724842B CN 201911043948 A CN201911043948 A CN 201911043948A CN 110724842 B CN110724842 B CN 110724842B
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CN110724842A (en
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刘振宇
马宗义
肖伯律
王全兆
王东
倪丁瑞
张星星
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Institute of Metal Research of CAS
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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
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • 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
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C22C2026/002—Carbon nanotubes

Abstract

The invention discloses a high-strength and high-toughness carbon nano tube reinforced aluminum-based composite material with a non-uniform structure and a preparation method thereof, belonging to the technical field of composite material preparation. The method comprises the steps of pre-grinding high-content carbon nanotube/aluminum composite material powder in a ball milling process, adding low-content carbon nanotube/aluminum composite material powder at intervals for ball milling, and finally adding aluminum alloy powder, so that gradient change of the content of the carbon nanotubes is formed in a micro area of the composite material under the cold welding effect. In addition, the composite material powder added later has short ball milling time and small grain refining degree, so that the grain size gradient distribution of the micro-area is formed. The powder is subjected to subsequent densification and secondary processing to obtain the final composite material, which shows the toughness far higher than that of the composite material with a uniform structure.

Description

High-strength and high-toughness carbon nano tube reinforced aluminum composite material with non-uniform structure and preparation method thereof
Technical Field
The invention relates to the technical field of composite material preparation, in particular to a high-strength and high-toughness carbon nano tube reinforced aluminum composite material with a non-uniform structure and a preparation method thereof.
Background
Carbon Nanotubes (CNTs) have extremely high mechanical properties (tensile strength >10GPa, elastic modulus-1 GPa) and a large aspect ratio, and are considered to be ideal reinforcements of composite materials. A small amount of carbon nano tubes are added into the aluminum alloy matrix, so that the high-strength and high-modulus aluminum matrix composite is expected to be prepared, and the preparation method has wide application prospect in the field of aerospace. However, the addition of the carbon nanotubes improves the strength and modulus of the composite material, and also inevitably deteriorates the toughness of the composite material, mainly for two reasons, namely that the carbon nanotubes dispersed in the aluminum matrix have a strong function of nail-rolling grain boundaries, so that the matrix grains are seriously refined, and the capability of storing dislocation is greatly reduced; secondly, the uniformly dispersed carbon nano tube distribution is sought to be obtained in the past, but the free path of the microcrack expansion is greatly reduced by the distribution, and the capability of the composite material for inhibiting the microcrack expansion is seriously reduced.
One of the current methods for preparing high strength and toughness aluminum-based composites is by adding coarse matrix powder to the composite [ Mater Sci Eng a, 1999; 259, p 296-; 49, p 405-417], thereby constructing a non-uniform structure with grain-free regions and grain-enriched regions, utilizing the good toughness of the grain-free regions to inhibit crack propagation in the composite material. However, the size of the constructed toughness zone is more than dozens of micrometers, so that the stress concentration of the toughness zone on the brittle zone cannot be effectively relaxed, the toughness is not obviously improved, and the strength, particularly the yield strength, of the composite material is greatly reduced due to the introduction of a large amount of low-strength toughness zones.
Disclosure of Invention
The invention aims to provide a high-toughness carbon nano tube reinforced aluminum composite material (CNT/Al) with a non-uniform structure and a preparation method thereof aiming at the defect of the existing toughness of the CNT/Al composite material. The prepared composite material has gradient distribution of carbon nano tube content and grain size in a micro area, not only can effectively exert the strengthening effect of the carbon nano tube, but also can ensure that the composite material keeps good toughness.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a high-strength and high-toughness carbon nano tube reinforced aluminum composite material with a non-uniform structure comprises the following steps:
(1) preparing n parts of mixed powder consisting of carbon nanotubes and aluminum alloy powder, wherein the content of the carbon nanotubes in the 1 st part to the nth part of the mixed powder is A in sequence1 vol.％、A2 vol.％、……、An vol.％，A1>A2>…An-1>An(ii) a The mixed powder is obtained by putting aluminum alloy powder and carbon nanotube powder into a mixer and uniformly mixing;
(2) with mass m1Part 1 of the mixed powder (A)1vol.% carbon nanotubes) in a ball mill, ball milling h1Hours; then the mass is m2Part 2 of the mixed powder (A)2vol.% carbon nanotubes) was added to the ball mill above the 1 st portion of the mixed powder and the 1 st portion of the mixed powder was co-milled h2Hours; sequentially until the mass is mnThe nth part of the mixed powder (A)nvol.% carbon nanotubes) was added to the ball mill on top of the (n-1) th mixed powder and all the previous powders were ball milled together hnHours; finally adding m massn+1Ball milling the aluminum alloy powder with all the previous powder hn+1H, obtaining final composite material powder;
(3) performing powder metallurgy densification on the final composite material powder obtained in the step (2) to obtain a compact composite material billet;
(4) and carrying out secondary plastic deformation processing on the obtained composite material billet to further improve the microstructure, and finally obtaining the high-strength and high-toughness carbon nano tube reinforced aluminum composite material with the non-uniform structure.
In the step (2), the aluminum alloy powder added finally in the ball milling is alloyed aluminum alloy powder or pre-alloyed aluminum powder consisting of element powder; the average grain diameter of the aluminum alloy powder added in the ball milling is between 5 and 100 mu m.
In the above step (2), the aluminum alloy powder added in the ball milling is selected from various types of aluminum alloy compositions of 1 xxx series to 8 xxx series, and among them, 2 xxx series, 5 xxx series, 6 xxx series, and 7 xxx series aluminum alloys are preferable.
The carbon nano tube is of a single-wall or multi-wall carbon nano tube structure, the diameter is less than 100nm, and the length is less than 500 mu m.
In the step (2), a process control agent is added in the ball milling process, and the process control agent is one of methanol, ethanol, petroleum ether, stearic acid, oleic acid and liquid paraffin.
In the step (2), in order to make the local structure of the final composite material have the characteristics of carbon nanotube content and grain size gradient change, the ball-material ratio, the rotating speed and the time need to be regulated and controlled so as to make the powder in the deformation-cold welding stageNo severe crushing occurred so that the n +1 th addition of powder after deformation cold welded with the powder in the previous ball mill pot. In order to achieve the effect, the ball-material ratio in the ball milling process is designed to be 5:1-30:1, the rotating speed is 100-nvol.% is 0.5-6 vol.%, and the time h of each ball milling isnIs 0.5-4 hours. The ball-material ratio is preferably 10:1-15:1, the rotating speed is preferably 200-nPreferably 1-3 hours.
In the step (4), the secondary plastic deformation processing is hot extrusion, hot rolling or unidirectional forging, preferably hot extrusion and hot rolling. When hot extrusion is used, the nominal extrusion ratio is not less than 10: 1; when hot rolling is used, the nominal rolling reduction is not less than 60%.
The high-strength and high-toughness carbon nano tube reinforced aluminum composite material with the non-uniform structure, which is prepared by the invention, has the non-uniform structure and is formed by dispersing carbon nano tubes in an aluminum matrix, wherein: the composite material presents gradient distribution of carbon nanotube content and grain size in a micro area), the carbon nanotubes are locally distributed in a gradient manner in a matrix, and the grain size is also changed in a gradient manner in an area where the carbon nanotubes are distributed in a gradient manner.
Compared with the prior strengthening and toughening technology, the invention has the advantages that:
1. the method has simple process, easy control and large-scale production capacity. Compared with the common ball milling process, the invention sequentially adds the mixed powder of the carbon nano tube and the aluminum alloy from high content to low content, and enables the powder to be in the deformation and cold welding stage without violent crushing by controlling the ball milling rotating speed and the ball milling time, so that the powder added later is subjected to cold welding with the powder in the previous ball milling tank after deformation. And finally, a non-uniform structure with the local carbon nanotube content and the grain size in gradient distribution is reserved.
2. The composite material prepared by the method has a non-uniform structure in a micro-area, the content of the carbon nano tube and the size of the crystal grain are in gradient distribution, the non-uniform structure can effectively inhibit local strain concentration, not only can effectively exert the strengthening effect of the carbon nano tube, but also can keep good toughness of the composite material, namely the overall toughness of the composite material is improved.
3. On the basis of toughening research of the existing particle-reinforced metal-based composite material, the invention is favorable for realizing coordinated deformation of different areas by constructing a non-uniform structure-gradient structure with the micro-area CNT content and the grain size in gradient distribution in the composite material, thereby inhibiting local strain concentration and ensuring that the reinforcing advantage of the CNT is fully exerted. In addition, the grain size is distributed in a gradient manner, the reduction of the yield strength can be compensated to a certain extent by regulating the content of large-size grains, and finally the high-strength and high-toughness CNT/Al composite material is obtained, and is expected to be applied to the aerospace field requiring light weight and high strength.
Drawings
FIG. 1 is a schematic view of the micro-domain structure of the non-uniform CNT/Al composite of the invention.
FIG. 2 is a microstructure of a non-uniform structure CNT/Al composite prepared according to the present invention; wherein: (b) and (c) is an enlarged view of the different regions in (a).
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The invention adopts the steps of pre-grinding high-content carbon nano tube/aluminum composite material powder in the ball milling process, adding low-content carbon nano tube/aluminum composite material powder at intervals, and finally adding aluminum alloy powder, so that gradient change of the content of the carbon nano tube is formed in a micro area of the composite material under the cold welding action. In addition, the composite material powder added later has short ball milling time and small grain refining degree, so that the grain size gradient of a micro-area is formed. The composite powder is densified and secondary processed to obtain the final non-uniform CNT/Al composite. The method has simple process, and the prepared CNT/Al composite material has excellent toughness and large-scale application potential.
The invention comprises the following steps:
(1) mixing aluminum alloy powder with Anvol.% carbon nanotube powder was placed in a blender and mixed to obtain anvol.% carbon nanotube/aluminum composite powder;
(2) with mass m1A of (A)1Putting the vol.% carbon nano tube/aluminum composite material powder into a ball mill, adding a proper amount of process control agent, and ball milling for h1Hours; with mass m2A of (A)2vol.% of the carbon nanotube/aluminum composite powder was added to a ball mill and co-milled with the previous powder h2Hours; … has mass mnA of (A)nvol.% of the carbon nanotube/aluminum composite powder was added to a ball mill and co-milled with the previous powder hnAnd (4) hours. Finally adding m massn+1Ball milling the aluminum alloy powder togethern+1And (4) hours. Obtaining final composite material powder;
(3) performing densification treatment on the final composite material powder to obtain a compact composite material billet;
(4) the composite material billet is subjected to conventional forging, extrusion or rolling type thermal secondary processing treatment to further improve the microstructure, so that the carbon nanotube/aluminum composite material with the non-uniform structure and the gradient distribution of the carbon nanotube content and the grain size in a local area is obtained (figure 1).
Example 1
Uniformly mixing 450g of pre-alloyed 2009Al powder (consisting of Al powder, Mg powder and Cu-Cu powder) with the average size of 10 mu m and multi-wall CNT with the content of 4 vol.%, adding the mixture into a ball mill, adding 2 wt.% of stearic acid serving as a process control agent, introducing argon and cooling water, and carrying out ball milling for 2 hours at the speed of 350 r/min; adding 400g of 3 vol.% CNT/2009Al composite powder to the composite powder, run at 300r/min for 2 hours; 150g of pre-alloyed 2009Al powder with the average size of 10 μm is added into the composite material powder, and the mixture is ball milled for 0.5h at the rotating speed of 200r/min to obtain the final composite material powder. Then, obtaining a composite material billet by cold pressing at 50MPa and vacuum hot pressing at 540 ℃ and 80 MPa; the billet was hot extruded at an extrusion ratio of 16:1, resulting in a non-uniform structure of 3 vol.% CNT/2009Al composite (fig. 2).
The carbon nano tube content of the local position of the matrix of the composite material is in gradient distribution, and the grain size is also in gradient change in the difference that the carbon nano tubes are in gradient distribution. In the gradient direction of the gradually increased content of the carbon nano tubes, the grain size of the composite material in the same area along the gradient direction is gradually reduced.
The yield strength of the composite material T4 treated by the method reaches 650MPa, the tensile strength is 745MPa, and the elongation is about 5%.
Comparative example 1
Pre-alloyed 2009Al powder (consisting of Al powder, Mg powder and Cu-Cu powder) with the average size of 10 microns and multi-wall CNT with the content of 3 vol.% are added into a stirring ball mill, 2 wt.% of stearic acid is added as a process control agent, argon and cooling water are introduced, and the mixture is ball-milled for 6 hours at 400r/min to obtain uniformly dispersed CNT/2009Al composite material powder. Then, obtaining a composite material billet by cold pressing at 50MPa and vacuum hot pressing at 540 ℃ and 80 MPa; the billet was hot extruded at an extrusion ratio of 16:1 to give the final uniformly dispersed 3 vol.% CNT/2009Al composite. The yield strength of the composite material T4 treated by the method reaches 680MPa, the tensile strength reaches 730MPa, but the elongation is less than 2%.
Example 2
Uniformly mixing 300g of 5083Al alloy powder with the average size of 10 mu m and multi-wall CNT with the content of 4 vol.%, adding the mixture into a stirring ball mill, adding 2 wt.% of stearic acid as a process control agent, introducing argon and cooling water, and carrying out ball milling for 2 hours at 400 r/min; adding 600g of 3 vol.% CNT/5083Al composite powder to the composite powder, run at 400r/min for 2 hours; 100g of prealloyed 5083Al powder with the average size of 10 mu m is added into the composite material powder, and the mixture is ball milled for 0.5h at the rotating speed of 200r/min, so that the final composite material powder is obtained. Then, obtaining a composite material billet by cold pressing at 40MPa and vacuum hot pressing at 500 ℃ and 80 MPa; the billet was hot extruded at an extrusion ratio of 16:1, resulting in a 3 vol.% CNT/5083Al composite with a non-uniform structure. The yield strength of the composite material reaches 500MPa, the tensile strength reaches 645MPa, and the elongation is about 4 percent.
Comparative example 2
Prealloying 5083Al powder (consisting of Al powder and Mg powder) with the average size of 10 mu m and multi-wall CNT with the content of 4.5 vol.% are added into a stirring ball mill, 2 wt.% of stearic acid is added as a process control agent, argon and cooling water are introduced, and ball milling is carried out for 8 hours at 400r/min to obtain uniformly dispersed CNT/5083Al composite material powder; 5083Al alloy powder having a size of about 200 μm is added to the composite powder in an amount of 50 wt.%, and the mixture is fed into a blender mixer to run at 60r/min for 5 hours to be uniformly mixed, thereby obtaining the final composite powder. Then, obtaining a composite material billet by cold pressing at 40MPa and vacuum hot pressing at 500 ℃ and 80 MPa; the billet was hot extruded at an extrusion ratio of 25:1 to give the final uniformly dispersed 3 vol.% CNT/5083Al composite. The yield strength of the composite material is 510MPa, the tensile strength is 615MPa, and the elongation is about 1.5%.
Example 3
Uniformly mixing 363g of 6061Al alloy powder with the average size of 10 mu m and multi-wall CNT with the content of 4 vol.%, adding the mixture into a stirring ball mill, adding 2 wt.% of stearic acid as a process control agent, introducing argon and cooling water, and carrying out ball milling for 2 hours at 300 r/min; to the composite powder was added 91g of 3 vol.% CNT/6061Al composite powder, run at 300r/min for 1.5 hours; to the composite powder was added 182g of 1.5 vol.% CNT/6061Al composite powder, run at 300r/min for 1.5 hours; 364g of prealloyed 6061Al powder with the average size of 10 mu m is added into the composite material powder, and the mixture is ball-milled for 0.5h at the rotating speed of 150r/min to obtain the final composite material powder. Then, obtaining a composite material billet by cold pressing at 40MPa and vacuum hot pressing at 580 ℃ and 100 MPa; the billet was hot extruded at an extrusion ratio of 16:1 to yield a final 3 vol.% CNT/6061Al composite of heterogeneous structure. The yield strength of the composite material treated by T6 reaches 475MPa, the tensile strength is 525MPa, and the elongation rate is about 10%.
Comparative example 3
6061Al alloy powder with the average size of 10 mu m and single-wall CNT with the content of 2 vol.% are added into a stirring ball mill, 2 wt.% of liquid paraffin is added as a process control agent, and argon and cooling water are introduced to carry out ball milling for 6 hours at 350r/min to obtain CNT/6061Al composite material powder with uniform dispersion. Then, obtaining a composite material billet by cold pressing at 40MPa and vacuum hot pressing at 580 ℃ and 100 MPa; the billet was hot forged at a forging ratio of 10:1 to yield a uniformly dispersed 3 vol.% CNT/6061Al composite. The yield strength of the composite material treated by T6 reaches 408MPa, the tensile strength reaches 520MPa, and the elongation is about 4%.
Example 4
Mixing 400g of 7055Al alloy powder with the average size of 30 mu m and multi-wall CNT with the content of 3 vol.%, adding the mixture into a stirring ball mill, adding 1.5 wt.% of oleic acid serving as a process control agent, introducing argon and cooling water, and carrying out ball milling at 300r/min for 3 hours; adding 400g of 2 vol.% multi-wall CNT/7055Al alloy powder into the composite material powder, and carrying out ball milling at 300r/min for 3 hours; 200g of 7055Al alloy powder with an average size of 30 μm was added to the composite powder and ball milled at 100r/min for 1 hour to give the final 2 vol.% CNT/7055Al composite powder. Then, obtaining a composite material billet by cold pressing at 50MPa and hot isostatic pressing at 500 ℃ and 100 MPa; the billet was hot-rolled at a rolling ratio of 60% to finally obtain a 2 vol.% CNT/7055Al composite with a non-uniform structure. The yield strength of the composite material treated by T6 reaches 710MPa, the tensile strength is 794MPa, and the elongation is about 8%.
Comparative example 4
Mixing 7055Al alloy powder with the average size of 30 mu m and multi-wall CNT with the content of 2 vol.%, adding the mixture into a stirring ball mill, adding 1.5 wt.% of oleic acid as a process control agent, introducing argon and cooling water, and carrying out ball milling for 6 hours at 300r/min to obtain uniformly dispersed CNT/7055Al composite material powder. Then, obtaining a composite material billet by cold pressing at 50MPa and hot isostatic pressing at 500 ℃ and 100 MPa; the billet was hot rolled at a rolling ratio of 60% to yield a final graded structured 2 vol.% CNT/7055Al composite. The yield strength of the composite material T6 after treatment reaches 685MPa, the tensile strength reaches 780MPa, and the elongation rate is about 4%.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (9)

1. A preparation method of a high-strength and high-toughness carbon nano tube reinforced aluminum composite material with a non-uniform structure is characterized by comprising the following steps of: the method comprises the following steps:
(1) preparing n parts of mixed powder consisting of carbon nanotubes and aluminum alloy powder, wherein the content of the carbon nanotubes in the 1 st part to the nth part of the mixed powder is A in sequence1 vol.％、A2 vol.％、……、An vol.％，A1>A2>…An-1>An(ii) a The mixed powder is obtained by putting aluminum alloy powder and carbon nanotube powder into a mixer and uniformly mixing;
(2) with mass m1The 1 st mixed powder is put into a ball mill for ball milling h1Hours; then the mass is m2Adding the 2 nd part of mixed powder into a ball mill on the 1 st part of mixed powder, and ball-milling the 1 st part of mixed powder together for h2Hours; sequentially until the mass is mnThe nth part of the mixed powder is added to the (n-1) th part of the mixed powder in the ball mill, and all the previous powder is ball milled together for hnHours; finally adding m massn+1Ball milling the aluminum alloy powder with all the previous powder hn+1H, obtaining final composite material powder; the ball-material ratio in the ball milling process is 5:1-30:1, the rotating speed is 100-nvol.% is 0.5-6 vol.%, and the time h of each ball milling isnIs 0.5 to 4 hours;
(3) performing powder metallurgy densification on the final composite material powder obtained in the step (2) to obtain a compact composite material billet;
(4) and carrying out secondary plastic deformation processing on the obtained composite material billet to further improve the microstructure, and finally obtaining the high-strength and high-toughness carbon nano tube reinforced aluminum composite material with the non-uniform structure.
2. The method for preparing the high-strength and high-toughness carbon nanotube reinforced aluminum composite material with the non-uniform structure as claimed in claim 1, wherein the method comprises the following steps: in the step (2), the aluminum alloy powder added finally in the ball milling is alloyed aluminum alloy powder or pre-alloyed aluminum powder consisting of element powder; the average grain diameter of the aluminum alloy powder added in the ball milling is between 5 and 100 mu m.
3. The method for preparing the high-strength and high-toughness carbon nanotube reinforced aluminum composite material with the non-uniform structure as claimed in claim 1 or 2, wherein the method comprises the following steps: an aluminum alloy powder whose nominal composition is selected from the group consisting of 1 xxx series to 8 xxx series aluminum alloy compositions is added during ball milling.
4. The method for preparing the high-strength and high-toughness carbon nanotube reinforced aluminum composite material with the non-uniform structure as claimed in claim 1, wherein the method comprises the following steps: the carbon nano tube is of a single-wall or multi-wall carbon nano tube structure, the diameter is less than 100nm, and the length is less than 500 mu m.
5. The method for preparing the high-strength and high-toughness carbon nanotube reinforced aluminum composite material with the non-uniform structure as claimed in claim 1, wherein the method comprises the following steps: in the step (2), a process control agent is added in the ball milling process, and the process control agent is one of methanol, ethanol, petroleum ether, stearic acid, oleic acid and liquid paraffin.
6. The method for preparing the high-strength and high-toughness carbon nanotube reinforced aluminum composite material with the non-uniform structure as claimed in claim 1, wherein the method comprises the following steps: in the step (2), the ball material ratio is 10:1-15:1, the rotating speed is 200-nFor 1-3 hours.
7. The method for preparing the high-strength and high-toughness carbon nanotube reinforced aluminum composite material with the non-uniform structure as claimed in claim 1, wherein the method comprises the following steps: in the step (4), the secondary plastic deformation processing is hot extrusion, hot rolling or unidirectional forging.
8. A high-strength and high-toughness carbon nanotube reinforced aluminum composite material with a non-uniform structure prepared by the method of any one of claims 1 to 7, which is characterized in that: the composite material has a non-uniform structure and is formed by dispersing carbon nanotubes in an aluminum matrix, wherein: the content and the grain size of the carbon nano tube are distributed in a gradient way in the micro area.
9. The high strength and toughness carbon nanotube reinforced aluminum composite material with non-uniform structure as claimed in claim 8, wherein: the carbon nano tubes are distributed in a gradient manner at the local part of the matrix, and the grain size is also changed in a gradient manner in the area where the carbon nano tubes are distributed in a gradient manner.
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CN111266593B (en) * 2020-03-31 2022-11-08 燕山大学 High-toughness metal material with gradient structural units and preparation method thereof
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010091790A1 (en) * 2009-02-16 2010-08-19 Bayer International Sa A compound material comprising a metal and nanoparticles and a method for producing the same
CN102639321A (en) * 2009-12-01 2012-08-15 应用纳米结构方案公司 Metal matrix composite materials containing carbon nanotube-infused fiber materials and methods for production thereof
CN104141062A (en) * 2014-08-07 2014-11-12 天津大学 Preparation method of carbon nano tube reinforced Al-Cu alloy based composite material
CN106756166A (en) * 2016-12-01 2017-05-31 中国科学院金属研究所 A kind of preparation method of tough carbon nano-tube reinforced metal-matrix composite material high
CN109108298A (en) * 2018-09-20 2019-01-01 宁夏大学 A kind of preparation method of high tough hierarchical structure metal-base composites
CN109403054A (en) * 2018-09-29 2019-03-01 东华大学 The preparation method and applications of carbon-doped nanometer tube aeroge composites sandwich structures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010091790A1 (en) * 2009-02-16 2010-08-19 Bayer International Sa A compound material comprising a metal and nanoparticles and a method for producing the same
CN102639321A (en) * 2009-12-01 2012-08-15 应用纳米结构方案公司 Metal matrix composite materials containing carbon nanotube-infused fiber materials and methods for production thereof
CN104141062A (en) * 2014-08-07 2014-11-12 天津大学 Preparation method of carbon nano tube reinforced Al-Cu alloy based composite material
CN106756166A (en) * 2016-12-01 2017-05-31 中国科学院金属研究所 A kind of preparation method of tough carbon nano-tube reinforced metal-matrix composite material high
CN109108298A (en) * 2018-09-20 2019-01-01 宁夏大学 A kind of preparation method of high tough hierarchical structure metal-base composites
CN109403054A (en) * 2018-09-29 2019-03-01 东华大学 The preparation method and applications of carbon-doped nanometer tube aeroge composites sandwich structures

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