CN116117144A - Preparation method of two-stage layered titanium-based composite material - Google Patents

Preparation method of two-stage layered titanium-based composite material Download PDF

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CN116117144A
CN116117144A CN202211634632.4A CN202211634632A CN116117144A CN 116117144 A CN116117144 A CN 116117144A CN 202211634632 A CN202211634632 A CN 202211634632A CN 116117144 A CN116117144 A CN 116117144A
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titanium
powder
composite material
ball milling
flaky
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穆啸楠
段红强
张洪梅
程兴旺
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Beijing Institute of Technology BIT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/068—Flake-like particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
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  • Composite Materials (AREA)
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  • Nanotechnology (AREA)
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Abstract

The invention relates to a preparation method of a two-stage layered titanium-based composite material, and belongs to the technical field of preparation of titanium-based composite materials. Transferring the mixed slurry of the nano reinforced powder, the flaky titanium-based powder and the absolute ethyl alcohol into a ball milling tank for ball milling to obtain composite powder of the nano reinforced body adsorbed/embedded flaky titanium-based powder; and (3) alternately filling the composite powder of the metal foil with clean surface and the nano reinforcement adsorbed/embedded flaky titanium-based powder into a die, and then carrying out rapid hot-pressing sintering molding to obtain the two-stage layered titanium-based composite material. According to the invention, the high-strength nano reinforced titanium-based composite powder and the titanium foil or the titanium alloy foil with better toughness are compounded together through the rapid hot-pressing sintering method, so that the titanium-based composite material with the micron-sized primary layer and the submicron-sized secondary layer is constructed, has more remarkable reinforcing effect, has excellent strength and plasticity, and reduces the preparation difficulty and the preparation cost.

Description

Preparation method of two-stage layered titanium-based composite material
Technical Field
The invention relates to a preparation method of a two-stage layered titanium-based composite material, and belongs to the technical field of preparation of titanium-based composite materials.
Background
The titanium-based composite material has the excellent characteristics of low density, high specific strength, high specific stiffness, corrosion resistance, low expansion coefficient and the like, and is one of the development directions of advanced metal structural materials. The introduction of the nano/micron reinforcement can greatly improve the strength of titanium and titanium alloy, but the plasticity of the titanium-based composite material can be greatly reduced along with the improvement of the content of the reinforcement. The strong/plastic inversion relationship of titanium-based composites greatly limits the development and application of titanium-based composites. However, the layered structure can integrate the excellent properties of the constituent materials together to fully exert the properties of the components. Therefore, the high-strength titanium-based composite material is compounded with the titanium or titanium alloy layer with better plasticity, so that the shaping of the layered titanium-based composite material is hopeful to be improved and the higher strength is reserved.
The preparation method of the layered titanium-based composite material at present mainly comprises the following steps: explosive cladding, rolling cladding, hot-pressing diffusion cladding and deposition cladding. The composite form mainly comprises the following components: (1) compounding a powder layer and a powder layer; (2) sheet-to-sheet lamination. The evenness and uniformity of the layers are difficult to control in the preparation process, the two layers of powder are easy to mix and difficult to recycle, and the preparation cost is increased. The latter is compounded by preparing the slices of the fast-body material, which has high cost and complex operation. In addition, the current layered titanium-based composite material only relates to primary layering between micrometer-scale lower layers, and although the shaping of the titanium-based composite material is improved, the strength improvement is not obvious due to the larger size of layered units.
Disclosure of Invention
Aiming at the difficult problem of strong plastic matching of the prior titanium-based composite material, the invention provides a preparation method of a two-stage layered titanium-based composite material, which is characterized in that high-strength nano-reinforced titanium-based composite material powder and titanium foil or titanium alloy foil with better toughness are compounded together by a rapid hot-pressing sintering method to construct a titanium-based composite material with micron-sized primary layered and submicron-sized secondary layered, so that the composite material has more remarkable reinforcing effect, has excellent strength and plasticity, and reduces preparation difficulty and preparation cost.
The aim of the invention is achieved by the following technical scheme.
A method for preparing a two-stage layered titanium-based composite material, the method comprising the steps of:
(1) Firstly, ultrasonically dispersing nano reinforced powder into absolute ethyl alcohol, then adding flaky titanium-based powder, uniformly mixing, then transferring into a ball milling tank for ball milling, and removing the absolute ethyl alcohol after ball milling is finished to obtain composite powder of the nano reinforced body adsorbed/embedded flaky titanium-based powder;
(2) Alternately filling the composite powder of the metal foil with clean surface and the nano reinforcement adsorbed/embedded flaky titanium-based powder into a die, and then performing rapid hot pressing sintering molding, wherein the sintering pressure is 50-80 MPa, the sintering temperature is 750-950 ℃ and the sintering time is 5-10 min, so as to obtain a two-stage layered titanium-based composite material;
wherein the flaky titanium-based powder is flaky pure titanium powder or flaky titanium alloy powder, the mass ratio of the flaky titanium-based powder to the nano reinforced powder is preferably 100:3-100:0.1, and the metal foil is pure titanium foil or titanium alloy foil.
Further, the thickness of the flaky titanium-based powder in the step (1) is 2 to 20. Mu.m.
Further, the ball milling speed in the step (1) is 200-250 r/min, the ball milling time is 6-8 h, and the ball-material ratio is 10:1-5:1.
Further, the nano-reinforcement in step (1) includes, but is not limited to, graphene oxide, carbon nanotubes, nanodiamonds, and boron nitride nanoplatelets.
Further, the flaky titanium-based powder in the step (1) is prepared by adopting the following method: adding titanium-based powder with the particle size of 100-125 mu m into a groove ball milling tank, adding absolute ethyl alcohol and ball milling beads with the ball material ratio of 25:1-20:1, firstly ball milling for 1-3 hours at 200-300 r/min, then continuing ball milling for 2-3 hours at 300-400 r/min, and removing the absolute ethyl alcohol to obtain flaky titanium-based powder;
the inner molded surface of the groove ball milling tank is a cylindrical surface, a plurality of uniformly distributed circumferential annular grooves are processed on the inner molded surface, the boundary interval between every two adjacent annular grooves is 3-5 mm, smooth walls with more than one annular groove width are reserved at the top of the ball milling tank, the cross section of each annular groove is in a non-closed circle, the curvature R of each annular groove is 2-10 mm, the depth of each annular groove is 0.5R less than or equal to h less than or equal to R, and R is the minimum radius of the ball milling beads.
Further, when the metal foil and the nano reinforcement are alternately arranged to adsorb/embed the flaky titanium-based powder, the thickness ratio of the metal foil to the nano reinforcement adsorbed/embedded flaky titanium-based powder layer is 1:3-1:1, and the thickness of the metal foil is preferably 0.1-0.3 mm.
The beneficial effects are that:
(1) According to the invention, the two-stage layered titanium-based composite material is prepared by compounding the two-stage layered structure nano reinforced titanium-based composite material layer with high strength with the metal foil layer with better plasticity, cracks generated by the high-strength layer are deflected and passivated by the two-stage layered structure, the adjacent plastic layer passivates the cracks again, the stress intensity factor and crack expansion driving force are greatly reduced in the repeated deflection and passivation processes of the cracks, the coupling of various toughening mechanisms is realized, and the high strength and toughness are realized.
(2) The thickness of the two-level layered unit layer can be flexibly regulated and controlled by adopting the flaky titanium-based powder, so that the strength of the composite material can be conveniently regulated and controlled.
(3) The toughness matching performance of the composite material can be improved by adjusting the ratio of the thickness of the metal foil to the thickness of the composite powder of the nano reinforcement adsorbed/embedded sheet-shaped titanium-based powder, wherein the improvement of the thickness ratio of the metal foil is beneficial to the improvement of the toughness of the composite material.
(4) According to the invention, the powder layer of the composite powder of the nano reinforcement adsorbed/embedded flaky titanium-based powder is compounded with the flaky layer of the metal foil, the high-strength layer does not need to prepare a fast body in advance and then cut into slices, and the content of the nano reinforcement can be regulated, so that the component control and thickness adjustment of the high-strength layer are realized, and the operation is simple; and the secondary layer in the high-strength layer is formed by stacking flaky titanium-based powder, and the nano reinforcement among the flakes ensures that the secondary layer structure of the powder stack in the sintering process is reserved.
(5) According to the invention, the powder layers of the composite powder of the nano reinforcement adsorbed/embedded sheet-shaped titanium-based powder and the sheet layers of the metal foil are alternately arranged for rapid hot-pressing sintering, so that the preparation process is greatly simplified while the excellent interface strength is obtained, and the preparation difficulty and cost are reduced.
(6) The invention solves the problem of inversion of strong plastic matching of the titanium-based composite material by preparing the titanium-based composite material with a multi-scale layered structure, and provides a new thought for preparing the titanium-based composite material.
Drawings
FIG. 1 is a Scanning Electron Microscope (SEM) image of the flaky TC4 powder prepared in step (1) of example 1.
Fig. 2 is a scanning electron microscope image of the composite powder of graphene adsorbed/intercalated platelet-shaped TC4 powder prepared in step (2) of example 1.
Fig. 3 is a metallographic photograph of the two-stage layered titanium-based composite material prepared in step (5) of example 1, wherein I is a TC4 foil ductile layer and II is a graphene reinforced TC4 composite material high strength layer.
FIG. 4 is a graph comparing quasi-static tensile properties of the two-stage layered titanium-based composites prepared in examples 1-3.
Detailed Description
The invention is further described in connection with the following detailed description. Wherein the process is conventional unless otherwise specified and the starting materials are commercially available from the public sources unless otherwise specified.
In the following examples:
graphene powder: purity > 90%, size is 1-20 μm, manufacturer is Suzhou carbon Feng technology Co., ltd;
spherical TC4 powder: the grain size is 100-150 mu m, and the density is 4.51g/cm 3 The seller is a capital and balance mechanical five-ore import and export share company;
groove ball milling jar: the inner molded surface is a cylindrical surface, 8 circumferential annular grooves which are uniformly distributed are processed on the inner molded surface, the boundary interval between every two adjacent annular grooves is 3mm, smooth walls with more than one annular groove width are reserved at the top of the ball milling tank, the cross section of each annular groove is in a non-closed circle, the curvature R=10mm of each annular groove, the depth of each annular groove is 5mm, and the diameter of each zirconia ball milling bead is 10mm;
scanning electron microscope: HITACHI S-4800N field emission Scanning Electron Microscope (SEMEN) manufactured by HITACHI Co., ltd., japan;
universal tester (Zwick Z2.5 TH single-column bench type electronic universal tester): tensile experiments were performed at room temperature, wherein the strain rate was 5.0X10 -4 s -1 。
Example 1
(1) Preparation of TC4 flake powder
50g of spherical TC4 powder is added into 500mL of absolute ethyl alcohol, then the mixture is transferred into a groove ball milling tank, 1250g of zirconia ball milling beads with the diameter of 10mm are added, ball milling is carried out for 120min at 300r/min, then ball milling is carried out for 180min at 350r/min, and then the absolute ethyl alcohol is removed, so that flaky TC4 powder with the thickness of 2-3 mu m is obtained, as shown in figure 1;
(2) Composite powder for preparing graphene adsorption/embedding TC4 flake powder
Adding 0.05g of graphene into 100mL of absolute ethyl alcohol, performing ultrasonic dispersion for 0.5h under the power of 300W, adding 50g of flaky TC4 powder prepared in the step (1), uniformly mixing, transferring to a conventional nylon ball milling tank without grooves, adding 250g of zirconia ceramic balls with the diameter of 3mm, performing ball milling for 480min at 250r/min, and removing the absolute ethyl alcohol to obtain graphene adsorption/embedding flaky TC4 powder composite powder;
(3) Acid washing of TC4 foil
Etching the surface of the TC4 foil with the diameter of 25mm and the thickness of 100 mu m by using an HF solution with the mass concentration of 10%, and removing surface stains and oxide films to obtain a TC4 foil with a clean surface;
(4) Powder paving
Placing the pickled single piece of TC4 foil in the step (3) into a graphite mold with the inner diameter of 25mm, adding 0.55g of the graphene adsorption/embedding flaky TC4 powder composite powder obtained in the step (2) (the thickness of the composite powder layer is about 0.25 mm), flattening the powder by adopting a graphite pressure head, and repeating the operations according to the layer number requirement to alternately fill the composite powder of the TC4 foil and the graphene adsorption/embedding flaky TC4 powder into the graphite mold;
(5) Sintering
Placing the graphite mold assembled in the step (4) into a rapid hot-pressing sintering furnace, vacuumizing, wherein the vacuum degree of the furnace body is less than 10 -2 And (3) applying 50MPa pressure during Pa, heating the temperature in the furnace to 900 ℃ at a heating rate of 100 ℃/min, preserving heat for 5min at the temperature of 900 ℃, cooling to room temperature along with the furnace, and decompressing to obtain the two-stage layered titanium-based composite material, as shown in figure 3.
Example 2
(1) Preparation of TC4 flake powder
Adding 50g of spherical TC4 powder into 500mL of absolute ethyl alcohol, transferring the absolute ethyl alcohol into a groove ball milling tank, adding 1250g of zirconia ball milling beads with the diameter of 10mm, ball milling for 120min at 300r/min, continuing ball milling for 120min at 350r/min, and removing the absolute ethyl alcohol to obtain flaky TC4 powder with the thickness of 10-12 mu m;
(2) Composite powder for preparing graphene adsorption/embedding TC4 flake powder
Adding 0.05g of graphene into 100mL of absolute ethyl alcohol, performing ultrasonic dispersion for 0.5h under the power of 300W, adding 50g of flaky TC4 powder prepared in the step (1), uniformly mixing, transferring to a conventional nylon ball milling tank without grooves, adding 250g of zirconia ceramic balls with the diameter of 3mm, performing ball milling for 480min at 250r/min, and removing the absolute ethyl alcohol to obtain graphene adsorption/embedding flaky TC4 powder composite powder;
(3) Acid washing of TC4 foil
Etching the surface of the TC4 foil with the diameter of 25mm and the thickness of 100 mu m by using an HF solution with the mass concentration of 10%, and removing surface stains and oxide films to obtain a TC4 foil with a clean surface;
(4) Powder paving
Placing the pickled single piece of TC4 foil in the step (3) into a graphite mold with the inner diameter of 25mm, adding 0.55g of the graphene adsorption/embedding flaky TC4 powder composite powder obtained in the step (2) (the thickness of the composite powder layer is about 0.25 mm), flattening the powder by adopting a graphite pressure head, and repeating the operations according to the layer number requirement to load the composite powder of the TC4 foil and the graphene adsorption/embedding flaky TC4 powder into the graphite mold;
(5) Sintering
Placing the graphite mold assembled in the step (4) into a rapid hot-pressing sintering furnace, vacuumizing, wherein the vacuum degree of the furnace body is less than 10 -2 And (3) applying 50MPa pressure during Pa, heating the temperature in the furnace to 900 ℃ at a heating rate of 100 ℃/min, preserving heat for 5min at the temperature of 900 ℃, cooling to room temperature along with the furnace, and decompressing to obtain the two-stage layered titanium-based composite material.
Example 3
Based on example 1, except that the size of the TC4 foil in step (3) of example 1 was changed from "25 mm diameter and 100 μm thickness" to "25 mm diameter and 250 μm thickness", the other steps and conditions were the same as in example 1, and a two-stage layered titanium-based composite material was obtained accordingly.
The two-stage layered titanium-based composite materials prepared in examples 1 to 3 were respectively subjected to quasi-static tensile property test, and the results are shown in fig. 4. From the test results of fig. 4, it can be seen that the tensile strength of the two-stage layered titanium-based composite material prepared in example 1 is greater than 1400MPa, and the elongation is greater than 8%. In the two-stage layered titanium-based composite material, the overall performance of the composite material can be regulated and controlled by regulating the thickness of TC4 sheets in the high-strength layer. In the embodiment 2, the strength of the high-strength layer is reduced by increasing the thickness of the flaky TC4, the shaping of the layer is improved, and the strength of the finally prepared two-stage layered titanium-based composite material reaches 1340MPa, and the elongation is 9%. In addition, the main function of the toughness layer is to adjust the integral shaping of the two-level layered titanium-based composite material. In example 3, after the thickness of the ductile layer is increased, the elongation of the secondary layered titanium-based composite material is increased to 16%, while the tensile strength is still greater than 1200MPa, and the ductile-to-ductile matching performance is excellent. Based on the test results, the invention greatly improves the strong shaping matching performance of the titanium-based composite material by constructing the two-stage layered titanium-based composite material.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A preparation method of a two-stage layered titanium-based composite material is characterized by comprising the following steps: the method comprises the following steps:
(1) Firstly, ultrasonically dispersing nano reinforced powder into absolute ethyl alcohol, then adding flaky titanium-based powder, uniformly mixing, then transferring into a ball milling tank for ball milling, and removing the absolute ethyl alcohol after ball milling is finished to obtain composite powder of the nano reinforced body adsorbed/embedded flaky titanium-based powder;
(2) Alternately filling the composite powder of the metal foil with clean surface and the nano reinforcement adsorbed/embedded flaky titanium-based powder into a die, and then performing rapid hot pressing sintering molding, wherein the sintering pressure is 50-80 MPa, the sintering temperature is 750-950 ℃ and the sintering time is 5-10 min, so as to obtain a two-stage layered titanium-based composite material;
wherein the flaky titanium-based powder is flaky pure titanium powder or flaky titanium alloy powder, and the metal foil is pure titanium foil or titanium alloy foil.
2. The method for preparing the two-stage layered titanium-based composite material according to claim 1, wherein the method comprises the following steps: the thickness of the flaky titanium-based powder in the step (1) is 2-20 μm.
3. The method for preparing the two-stage layered titanium-based composite material according to claim 1, wherein the method comprises the following steps: the mass ratio of the flaky titanium-based powder to the nano reinforced powder is 100:3-100:0.1.
4. A method of producing a two-stage layered titanium-based composite material according to any one of claims 1 to 3, characterized in that: the flaky titanium-based powder in the step (1) is prepared by adopting the following method: adding titanium-based powder with the particle size of 100-125 mu m into a groove ball milling tank, adding absolute ethyl alcohol and ball milling beads with the ball material ratio of 25:1-20:1, firstly ball milling for 1-3 hours at 200-300 r/min, then continuing ball milling for 2-3 hours at 300-400 r/min, and removing the absolute ethyl alcohol to obtain flaky titanium-based powder;
the inner molded surface of the groove ball milling tank is a cylindrical surface, a plurality of uniformly distributed circumferential annular grooves are processed on the inner molded surface, the boundary interval between every two adjacent annular grooves is 3-5 mm, smooth walls with more than one annular groove width are reserved at the top of the ball milling tank, the cross section of each annular groove is in a non-closed circle, the curvature R of each annular groove is 2-10 mm, the depth of each annular groove is 0.5R less than or equal to h less than or equal to R, and R is the minimum radius of the ball milling beads.
5. A method of producing a two-stage layered titanium-based composite material according to any one of claims 1 to 3, characterized in that: the ball milling speed in the step (1) is 200-250 r/min, the ball milling time is 6-8 h, and the ball-material ratio is 10:1-5:1.
6. A method of producing a two-stage layered titanium-based composite material according to any one of claims 1 to 3, characterized in that: the nano reinforcement in the step (1) is graphene, graphene oxide, carbon nanotubes, nanodiamonds or boron nitride nanosheets.
7. A method of producing a two-stage layered titanium-based composite material according to any one of claims 1 to 3, characterized in that: when the metal foil and the nano reinforcement are alternately arranged, the thickness ratio of the metal foil to the nano reinforcement adsorbed/embedded flaky titanium-based powder layer is 1:3-1:1.
8. The method for preparing the two-stage layered titanium-based composite material according to claim 7, wherein the method comprises the following steps: the thickness of the metal foil is 0.1-0.3 mm.
CN202211634632.4A 2022-12-19 2022-12-19 Preparation method of two-stage layered titanium-based composite material Pending CN116117144A (en)

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