CN112108653B - 3D printing titanium-aluminum composite material and preparation method thereof - Google Patents

3D printing titanium-aluminum composite material and preparation method thereof Download PDF

Info

Publication number
CN112108653B
CN112108653B CN202010947180.XA CN202010947180A CN112108653B CN 112108653 B CN112108653 B CN 112108653B CN 202010947180 A CN202010947180 A CN 202010947180A CN 112108653 B CN112108653 B CN 112108653B
Authority
CN
China
Prior art keywords
aluminum
titanium
protective layer
composite material
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010947180.XA
Other languages
Chinese (zh)
Other versions
CN112108653A (en
Inventor
高桦
刘慧渊
计霞
楚瑞坤
陈志茹
汪承杰
周耀
肖静宇
余佩鸿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Falcontech Co ltd
Original Assignee
Falcontech Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Falcontech Co ltd filed Critical Falcontech Co ltd
Priority to CN202010947180.XA priority Critical patent/CN112108653B/en
Publication of CN112108653A publication Critical patent/CN112108653A/en
Application granted granted Critical
Publication of CN112108653B publication Critical patent/CN112108653B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • 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
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • 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

Abstract

The invention provides a 3D printing titanium-aluminum composite material and a preparation method thereof, wherein the composite material consists of an aluminum-containing matrix and a titanium-containing protective layer coated on the surface of the aluminum-containing matrix, and the aluminum-containing matrix is in a regular polyhedral structure. According to the composite material, a novel metal combination mode is provided by forming the cladding structure of the aluminum-containing matrix and the titanium-containing protective layer, and the characteristics of titanium and aluminum are fully combined, so that the obtained composite material has the advantages of small density, high strength, compact structure, strong corrosion resistance, excellent performance and wider applicable field; the composite material is prepared by adopting a selective laser melting method for the protective layer, is simple and convenient to operate, high in control precision, free of large-range melting of metal and low in energy consumption and cost.

Description

3D printing titanium-aluminum composite material and preparation method thereof
Technical Field
The invention belongs to the technical field of metal materials, and relates to a 3D printing titanium-aluminum composite material and a preparation method thereof.
Background
Titanium alloy is a new structural metal, and is widely applied to the fields of aerospace, medical treatment and the like due to the advantages of high specific strength, excellent heat resistance, super-strong corrosion resistance and the like; pure metallic titanium has a low density, good corrosion resistance and very high corrosion resistance in most media, so titanium and titanium alloys can be used as protective layers for various structures or materials.
Aluminum is another metal element widely applied, and the aluminum alloy has a series of excellent characteristics of low density, light weight, high strength, high plasticity and the like, is widely applied in the fields of military industry, aerospace, automobiles, mechanical manufacturing and the like, and has good development prospect. In addition to common alloy materials, the two materials are also required to be physically combined according to needs to obtain a composite material, for example, one material is used as a coating material of the other material, and different characteristics of the two materials are fully utilized to meet performance requirements.
In view of the fact that common metal and alloy materials are high in strength and not prone to deformation, metal structural parts with complex shapes are often difficult to process, a 3D printing technology is developed, the technology has the advantages of being high in size precision, good in surface quality, excellent in performance of formed parts and the like, powder or wire materials are stacked layer by layer in the forming process, the shape of products is almost not limited, complex structures such as grids and cavities can be directly formed, and therefore the method is often used for manufacturing parts with complex shapes and difficult to process, and is widely applied to various fields.
CN 108950334A discloses a magnesium-aluminum alloy with a continuous eutectic structure and a preparation method thereof, wherein the alloy consists of a magnesium-aluminum alloy matrix and a continuous eutectic phase distributed at the edge of a matrix grain, and the preparation steps comprise: placing the nano titanium powder and the magnesium-aluminum alloy powder in a ball mill, and carrying out ball milling under a protective atmosphere to obtain mixed powder; the mixed powder is used as a raw material, and the magnesium-aluminum alloy with a continuous eutectic structure is prepared by selective laser melting in a protective atmosphere. Titanium is introduced into the aluminum-magnesium alloy, a eutectic phase protective layer of magnesium alloy grains is only a protective layer on a microscopic layer, and the two kinds of powder are mixed and then subjected to selective laser melting to prepare the alloy material which is still three metals in nature.
CN 109261958A discloses a preparation method of a medical porous titanium or titanium alloy material with a tantalum coating coated on the surface, which comprises the steps of firstly preparing a porous titanium skeleton or a porous titanium alloy skeleton by a 3D printing method, then corroding the porous titanium skeleton or the porous titanium alloy skeleton, cleaning and drying the corroded porous titanium skeleton or the porous titanium alloy skeleton, then completely embedding the corroded porous titanium skeleton or the porous titanium alloy skeleton in superfine tantalum powder in a metal sheath, carrying out low-temperature diffusion sintering after vacuum sealing, and finally taking out and removing the powder to obtain the medical porous titanium or titanium alloy material with the tantalum coating coated on the surface. The method only adopts 3D printing to prepare the framework material, the preparation of the coating layer is greatly influenced by the structure of the framework, and the uniform coating layer is difficult to form on a complex structure.
In summary, for the preparation of the composite structural material, a proper combination mode is selected to meet the performance requirements of the material according to the characteristics and structural characteristics of different materials.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a 3D printing titanium-aluminum composite material and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a 3D printing titanium-aluminum composite material which is composed of an aluminum-containing matrix and a titanium-containing protective layer coated on the surface of the aluminum-containing matrix, wherein the aluminum-containing matrix is in a regular polyhedral structure.
According to the invention, the titanium-aluminum composite material does not adopt a traditional alloy composition mode, but forms a cladding structure comprising an aluminum-containing matrix and a titanium-containing protective layer, and the protective layer is added on the basis of fully retaining the advantages of small density, high strength and the like of the matrix structure, so that the corrosion resistance of the matrix structure is improved, a novel metal combination mode is provided, and the application field of the metal material is expanded; through the definition of the matrix structure, the protective layer can be conveniently obtained in a simple and convenient mode, the large-range melting of metal is not needed, and the energy consumption and the cost are lower.
The following technical solutions are preferred technical solutions of the present invention, but not limited to the technical solutions provided by the present invention, and technical objects and advantageous effects of the present invention can be better achieved and achieved by the following technical solutions.
In a preferred embodiment of the present invention, the material of the aluminum-containing substrate includes aluminum or an aluminum alloy.
Preferably, the material of the titanium-containing protective layer comprises titanium or a titanium alloy.
In the invention, the selection of the materials of the substrate and the protective layer of the titanium-aluminum composite material is not limited to metal simple substances, and alloy materials of respective metals can be selected according to the performance requirement; wherein the aluminum alloy can be selected from AlSi10Mg alloy, AlSi7Mg alloy and the like, and the titanium alloy can be selected from Ti6Al4V alloy and the like.
As a preferable technical scheme of the invention, the surfaces of the aluminum-containing substrate are all regular planes.
In the present invention, according to the requirement of the 3D printing selective laser melting method, in order to make the protective layer raw material powder lay on the surface of the substrate, the aluminum-containing substrate usually needs to select a regular structural member composed of a plurality of planes, such as a prism, most commonly a parallelepiped such as a cuboid, a cube, etc.
Preferably, the thickness of the titanium-containing protective layer is 1 to 3mm, such as 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.4mm, 2.7mm, or 3mm, but not limited to the recited values, and other values not recited in the range of values are also applicable.
In the invention, the thickness of the titanium-containing protective layer is related to the size of the aluminum matrix, the application occasion of the titanium-aluminum composite material and the like; the titanium-aluminum composite material has the bulk density of 3.5g/m according to the selection of the thickness of the titanium-containing protective layer3The light-weight automobile can meet the requirement of light weight and can be used in the fields of aerospace, automobile manufacturing and the like.
On the other hand, the invention provides a preparation method of a 3D printing titanium-aluminum composite material, which comprises the following steps:
(1) placing an aluminum-containing matrix in 3D printing equipment, laying titanium-containing powder on the upper surface of the aluminum-containing matrix, and then performing laser printing, wherein the titanium-containing powder is melted and cooled to form a titanium-containing protective layer;
(2) turning over the aluminum-containing matrix to enable the other surface of the aluminum-containing matrix to be an upper surface, and repeating the step (1) until all surfaces form a titanium-containing protective layer to obtain a coated aluminum-containing matrix;
(3) applying bonding pressure on the coated aluminum-containing matrix obtained in the step (2), and carrying out vacuum annealing treatment to obtain the titanium-aluminum composite material.
As a preferable technical scheme of the invention, the aluminum-containing substrate in the step (1) is fixed on a printing platform of a 3D printing device.
Preferably, the aluminum-containing substrate in the step (1) is subjected to surface sand blasting before being loaded into a 3D printing device.
In the invention, before selective laser melting, the surface of the aluminum-containing matrix needs to be pretreated to ensure that the surface is clean and free of impurities, and certain roughness is obtained, so that the adhesion is increased, and the coating of a protective layer is facilitated.
Preferably, the particle size of the titanium-containing powder in step (1) is not larger than 53 μm, wherein the selection of the titanium-containing powder is not a single particle size value, but a combination of titanium-containing powders within a certain particle size range, and the titanium-containing powders belong to different specifications, such as 15-45 μm, 15-53 μm, 0-45 μm, 0-53 μm and the like.
Preferably, the titanium-containing powder of step (1) is uniformly spread on the upper surface of the aluminum matrix.
In a preferred embodiment of the present invention, the laser printing power in step (1) is 250 to 300W, for example, 250W, 260W, 270W, 280W, 290W, or 300W, but the power is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
Preferably, the scanning speed of the laser in step (1) is 1000-1500 mm/s, such as 1000mm/s, 1100mm/s, 1200mm/s, 1300mm/s, 1400mm/s or 1500mm/s, but not limited to the values listed, and other values not listed in the range are also applicable.
Preferably, the scanning pitch of the laser in step (1) is 0.1-0.12 mm, such as 0.1mm, 0.105mm, 0.11mm, 0.115mm, or 0.12mm, but not limited to the recited values, and other values not recited in the range of the recited values are also applicable.
In the invention, a selective laser melting method is adopted, the heating and melting and subsequent cooling rates of the titanium-containing powder are very high, the precision of a control area is high, the structure of the matrix is not excessively influenced, and only the temperature of the area near the surface of the matrix is increased, so that the titanium-containing powder is conveniently combined with the molten titanium-containing powder to form a protective layer.
Preferably, after the laser printing in the step (1) is completed once, the powder is spread again, and the operation is repeated until the titanium-containing protective layer with the required thickness is obtained.
Preferably, the thickness of the titanium-containing protective layer formed in step (1) is 1 to 3mm, such as 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.4mm, 2.7mm, or 3mm, but is not limited to the recited values, and other values not recited in the range of values are also applicable.
As a preferable technical scheme of the invention, the surface of the aluminum-containing substrate in the step (2) is flat.
Preferably, after the titanium-containing protective layer is formed on all the surfaces of the aluminum-containing substrate, the joint of the adjacent surfaces is subjected to surface modification to form a flat and uniform titanium-containing protective layer.
In a preferred embodiment of the present invention, the bonding pressure in step (3) is applied to the entire surface of the substrate coated with aluminum.
Preferably, the applying pressure in step (3) is applied by clamping with a clamp, for example, the clamp may be formed by fixing a clamping block by a bolt connection.
Preferably, the bonding pressure in step (3) is 3 to 10MPa, for example, 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa or 10MPa, but is not limited to the recited values, and other values not recited in the numerical range are also applicable.
As a preferable technical scheme of the present invention, the vacuum annealing treatment in the step (3) is performed in a vacuum annealing furnace.
Preferably, the vacuum annealing furnace is vacuumized to 5 x 10-3Pa or less, e.g. 5X 10-3Pa、4×10-3Pa、3×10-3Pa、2×10-3Pa、1×10-3Pa、8×10-4Pa or 5X 10-4Pa, etc., but are not limited to the recited values, and other values not recited within the range of values are also applicable.
Preferably, the temperature of the vacuum annealing treatment in step (3) is 500 to 550 ℃, for example, 500 ℃, 510 ℃, 520 ℃, 530 ℃, 540 ℃, 550 ℃, etc., but is not limited to the recited values, and other values not recited in the range of the values are also applicable.
Preferably, the time of the vacuum annealing treatment in step (3) is 0.5 to 2 hours, such as 0.5 hour, 0.6 hour, 0.8 hour, 1 hour, 1.2 hours, 1.5 hour, 1.8 hour or 2 hours, but not limited to the recited values, and other values not recited in the range of the values are also applicable.
Preferably, the cooling mode after the vacuum annealing treatment in the step (3) is furnace cooling.
Preferably, the cooling rate after the vacuum annealing treatment in step (3) is 2 to 6 ℃/min, for example, 2 ℃/min, 2.5 ℃/min, 3 ℃/min, 3.5 ℃/min, 4 ℃/min, 4.5 ℃/min, 5 ℃/min, 5.5 ℃/min, or 6 ℃/min, etc., but is not limited to the recited values, and other values not recited in the numerical range are also applicable.
According to the invention, the bonding effect and compactness of the protective layer formed by 3D printing and the substrate are not strong, the bonding pressure is required to be applied, and annealing heat treatment is carried out.
As a preferred technical scheme of the invention, the preparation method comprises the following steps:
(1) fixing an aluminum-containing substrate on a printing platform in 3D printing equipment, uniformly paving titanium-containing powder on the upper surface of the aluminum-containing substrate, wherein the particle size of the titanium-containing powder is not more than 53 microns, then carrying out laser printing, wherein the power of laser is 250-300W, the scanning speed is 1000-1500 mm/s, the scanning interval is 0.1-0.12 mm, melting and cooling the titanium-containing powder to form a titanium-containing protective layer, and paving powder again and repeating the operation until the titanium-containing protective layer with the thickness of 1-3 mm is obtained;
(2) turning over the aluminum-containing substrate to enable the other surface to be an upper surface, repeating the step (1) until all surfaces form a titanium-containing protective layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium-containing protective layer to obtain the aluminum-containing-coated substrate;
(3) applying a bonding pressure of 3-10 MPa to the whole surface of the aluminum-containing substrate coated in the step (2), performing vacuum annealing treatment, and vacuumizing until the pressure reaches 5 multiplied by 10-3The temperature of the vacuum annealing treatment is 500-550 ℃ below Pa, and the heat preservation time is 0.5-2 h; and then cooling along with the furnace at a cooling rate of 2-6 ℃/min to obtain the titanium-aluminum composite material.
Compared with the prior art, the invention has the following beneficial effects:
(1) the composite material provided by the invention provides a new metal combination mode by forming the cladding structure of the aluminum-containing matrix and the titanium-containing protective layer, and fully combines the characteristics of titanium and aluminum metals, so that the obtained composite material has the advantages of small density, high strength, compact structure, strong corrosion resistance and excellent performance;
(2) the composite material is prepared by adopting a selective laser melting method for the protective layer, is simple and convenient to operate, has high control precision, does not need to melt metal in a large range, and has low energy consumption and cost.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. However, the following examples are only simple examples of the present invention and do not represent or limit the scope of the present invention, which is defined by the claims.
The invention provides a 3D printing titanium-aluminum composite material and a preparation method thereof.
The preparation method comprises the following steps:
(1) placing an aluminum-containing matrix in 3D printing equipment, laying titanium-containing powder on the upper surface of the aluminum-containing matrix, and then performing laser printing, wherein the titanium-containing powder is melted and cooled to form a titanium-containing protective layer;
(2) turning over the aluminum-containing matrix to enable the other surface of the aluminum-containing matrix to be an upper surface, and repeating the step (1) until all surfaces form a titanium-containing protective layer to obtain a coated aluminum-containing matrix;
(3) applying bonding pressure on the coated aluminum-containing matrix obtained in the step (2), and carrying out vacuum annealing treatment to obtain the titanium-aluminum composite material.
The following are typical but non-limiting examples of the invention:
example 1:
the embodiment provides a 3D printing titanium-aluminum composite material and a preparation method thereof, wherein the composite material is composed of an aluminum matrix and a titanium protection layer coated on the surface of the aluminum matrix, and the aluminum matrix is of a cuboid structure.
The thickness of the titanium protective layer is 1.5 mm.
The preparation method comprises the following steps:
(1) fixing an aluminum substrate on a printing platform in 3D printing equipment, uniformly paving titanium powder on the upper surface of the aluminum substrate, wherein the average particle size of the titanium powder is 35.2 mu m, then carrying out laser printing, wherein the laser power is 270W, the scanning speed is 1200mm/s, the scanning distance is 0.11mm, the titanium powder is melted and cooled to form a titanium protective layer, and then paving the powder again and repeating the operation until the titanium protective layer with the thickness of 1.5mm is obtained;
(2) turning over the aluminum substrate to enable the other surface of the aluminum substrate to be an upper surface, repeating the step (1) until all surfaces form a titanium protection layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium protection layer to obtain an aluminum-coated substrate;
(3) applying the bonding pressure of 5MPa to the whole surface of the coated aluminum substrate obtained in the step (2), carrying out vacuum annealing treatment, and vacuumizing until the pressure is 4 multiplied by 10-3Pa, wherein the temperature of the vacuum annealing treatment is 550 ℃ and the time is 2 h; and then cooling along with the furnace at the cooling rate of 4 ℃/min to obtain the titanium-aluminum composite material.
In the embodiment, the titanium-aluminum composite material is formed by coating an aluminum substrate with titanium, and has small overall density of only 3.5g/m3Compact structure, strong corrosion resistance, and 3.5 wt% NaCl solution immersionAnd (4) soaking treatment, wherein no obvious corrosion is generated after 2000 h.
Example 2:
the embodiment provides a 3D printing titanium-aluminum composite material and a preparation method thereof, wherein the composite material is composed of an aluminum-silicon alloy matrix and a titanium protective layer coated on the surface of the aluminum-silicon alloy matrix, and the aluminum-silicon alloy matrix is of a parallelepiped structure.
The thickness of the titanium protective layer is 2 mm.
The preparation method comprises the following steps:
(1) fixing an aluminum-silicon alloy matrix on a printing platform in 3D printing equipment, uniformly paving titanium powder on the upper surface of the aluminum-silicon alloy matrix, wherein the average particle size of the titanium powder is 24.7 mu m, then carrying out laser printing, the laser power is 250W, the scanning speed is 1000mm/s, the scanning distance is 0.1mm, melting and cooling the titanium powder to form a titanium protective layer, and paving the powder again to repeat the operation until the titanium protective layer with the thickness of 2mm is obtained;
(2) turning over the aluminum-silicon alloy matrix to enable the other surface to be an upper surface, repeating the step (1) until all surfaces form a titanium protective layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium protective layer to obtain a coated aluminum-silicon alloy matrix;
(3) applying the bonding pressure of 3MPa to the whole surface of the coated aluminum-silicon alloy matrix obtained in the step (2), carrying out vacuum annealing treatment, and vacuumizing until the pressure is 5 multiplied by 10-3Pa, the temperature of the vacuum annealing treatment is 535 ℃, and the time is 0.5 h; and then furnace cooling is carried out, wherein the cooling rate is 6 ℃/min, and the composite material is obtained.
In the embodiment, the composite material is formed by coating the titanium-coated aluminum-silicon alloy matrix, and the overall density is low and is only 3.4g/m3The structure is compact, the corrosion resistance is strong, 3.5 wt% NaCl solution is adopted for soaking treatment, and obvious corrosion does not exist after 2000 hours.
Example 3:
the embodiment provides a 3D printing titanium-aluminum composite material and a preparation method thereof, wherein the composite material is composed of an aluminum matrix and a titanium alloy protection layer coated on the surface of the aluminum matrix, and the aluminum matrix is of a hexagonal prism structure.
The thickness of the titanium alloy protective layer is 2.4 mm.
The preparation method comprises the following steps:
(1) fixing an aluminum substrate on a printing platform in 3D printing equipment, uniformly paving titanium alloy powder on the upper surface of the aluminum substrate, wherein the average particle size of the powder is 39.4 mu m, then carrying out laser printing, wherein the laser power is 300W, the scanning speed is 1500mm/s, the scanning distance is 0.12mm, melting and cooling the powder to form a titanium alloy protective layer, and paving the powder again until the titanium alloy protective layer with the thickness of 2.4mm is obtained;
(2) turning over the aluminum substrate to enable the other surface of the aluminum substrate to be an upper surface, repeating the step (1) until all surfaces form a titanium alloy protection layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium alloy protection layer to obtain a coated aluminum substrate;
(3) applying bonding pressure of 8MPa to the whole surface of the coated aluminum substrate obtained in the step (2), carrying out vacuum annealing treatment, and vacuumizing until the pressure is 2 multiplied by 10-3Pa, the temperature of the vacuum annealing treatment is 520 ℃, and the time is 1 h; and then furnace cooling is carried out, wherein the cooling rate is 2 ℃/min, and the composite material is obtained.
In the embodiment, the composite material is formed by coating the aluminum matrix with the titanium alloy, and the overall density is low and is only 3.2g/m3The structure is compact, the corrosion resistance is strong, 3.5 wt% NaCl solution is adopted for soaking treatment, and obvious corrosion does not exist after 2000 hours.
Example 4:
the embodiment provides a 3D printing titanium-aluminum composite material and a preparation method thereof, wherein the composite material is composed of an aluminum-magnesium alloy matrix and a titanium alloy protective layer coated on the surface of the aluminum-magnesium alloy matrix, and the aluminum-magnesium alloy matrix is in a cube structure.
The thickness of the titanium alloy protective layer is 1.2 mm.
The preparation method comprises the following steps:
(1) fixing an aluminum-magnesium alloy substrate on a printing platform in 3D printing equipment, uniformly paving titanium alloy powder on the upper surface of the aluminum-magnesium alloy substrate, wherein the average particle size of the powder is 45.5 micrometers, then performing laser printing, wherein the laser power is 260W, the scanning speed is 1400mm/s, the scanning distance is 0.115mm, melting and cooling the powder to form a titanium alloy protective layer, and paving the powder again to repeat the operation until the titanium alloy protective layer with the thickness of 1.2mm is obtained;
(2) turning over the aluminum magnesium alloy matrix to enable the other surface to be an upper surface, repeating the step (1) until all surfaces form a titanium alloy protective layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium alloy protective layer to obtain a coated aluminum magnesium alloy matrix;
(3) applying the bonding pressure of 4MPa to the whole surface of the coated aluminum-magnesium alloy substrate obtained in the step (2), carrying out vacuum annealing treatment, and vacuumizing until the pressure is 1 multiplied by 10-3Pa, wherein the temperature of the vacuum annealing treatment is 500 ℃ and the time is 1.2 h; and then furnace cooling is carried out, wherein the cooling rate is 5 ℃/min, and the composite material is obtained.
In the embodiment, the composite material is formed by coating the titanium alloy on the aluminum-magnesium substrate, and the overall density is low and is only 3.3g/m3The structure is compact, the corrosion resistance is strong, 3.5 wt% NaCl solution is adopted for soaking treatment, and obvious corrosion does not exist after 2000 hours.
Example 5:
the embodiment provides a 3D printing titanium-aluminum composite material and a preparation method thereof, wherein the composite material is composed of an aluminum matrix and a titanium alloy protection layer coated on the surface of the aluminum matrix, and the aluminum matrix is in a regular octahedral structure.
The thickness of the titanium alloy protective layer is 3 mm.
The preparation method comprises the following steps:
(1) fixing an aluminum substrate on a printing platform in 3D printing equipment, uniformly paving titanium alloy powder on the upper surface of the aluminum substrate, wherein the average particle size of the powder is 30.5 mu m, then carrying out laser printing, wherein the laser power is 280W, the scanning speed is 1100mm/s, the scanning distance is 0.105mm, melting and cooling the powder to form a titanium alloy protective layer, and paving the powder again to repeat the operation until the titanium alloy protective layer with the thickness of 3mm is obtained;
(2) turning over the aluminum substrate to enable the other surface of the aluminum substrate to be an upper surface, repeating the step (1) until all surfaces form a titanium alloy protection layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium alloy protection layer to obtain a coated aluminum substrate;
(3) applying the bonding pressure of 10MPa to the whole surface of the coated aluminum substrate obtained in the step (2), carrying out vacuum annealing treatment, and vacuumizing until the pressure is 4.5 multiplied by 10-3Pa, the temperature of the vacuum annealing treatment is 540 ℃, and the time is 1.5 h; and then furnace cooling is carried out, wherein the cooling rate is 3 ℃/min, and the composite material is obtained.
In the embodiment, the composite material is formed by coating the aluminum matrix with the titanium alloy, and the overall density is low and is only 3.45g/m3The structure is compact, the corrosion resistance is strong, 3.5 wt% NaCl solution is adopted for soaking treatment, and obvious corrosion does not exist after 2000 hours.
By combining the embodiments, the composite material provided by the invention provides a new metal combination mode by forming the cladding structure of the aluminum-containing matrix and the titanium-containing protective layer, and fully combines the characteristics of titanium and aluminum metals, so that the obtained composite material has the advantages of small density, high strength, compact structure, strong corrosion resistance, excellent performance and wider applicable field; the composite material is prepared by adopting a selective laser melting method for the protective layer, is simple and convenient to operate, high in control precision, free of large-range melting of metal and low in energy consumption and cost.
The applicant states that the present invention is illustrated by the above examples to show the detailed products and methods of the present invention, but the present invention is not limited to the above detailed products and methods, i.e. it is not meant to imply that the present invention must rely on the above detailed products and methods for implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions for the product of the present invention and additional components, addition of operations, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims (24)

1. The 3D printing titanium-aluminum composite material is characterized by comprising an aluminum-containing matrix and a titanium-containing protective layer coated on the surface of the aluminum-containing matrix, wherein the aluminum-containing matrix is in a regular polyhedral structure, and the surface of the aluminum-containing matrix is a regular plane;
the preparation method of the composite material comprises the following steps:
(1) placing an aluminum-containing matrix in 3D printing equipment, laying titanium-containing powder on the upper surface of the aluminum-containing matrix, and then performing laser printing, wherein the titanium-containing powder is melted and cooled to form a titanium-containing protective layer;
(2) turning over the aluminum-containing substrate to enable the other surface to be an upper surface, repeating the step (1) until all surfaces form a titanium-containing protective layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform aluminum-containing coated substrate after all surfaces of the aluminum-containing substrate form the titanium-containing protective layer;
(3) applying bonding pressure to the coated aluminum-containing matrix obtained in the step (2), wherein the bonding pressure is 3-10 MPa, and performing vacuum annealing treatment to obtain the titanium-aluminum composite material.
2. The composite material of claim 1, wherein the material of the aluminum-containing matrix comprises aluminum or an aluminum alloy.
3. The composite material of claim 1, wherein the material of the titanium-containing protective layer comprises titanium or a titanium alloy.
4. The composite material of claim 1, wherein the titanium-containing protective layer has a thickness of 1 to 3 mm.
5. A method for the preparation of a composite material according to any one of claims 1 to 4, characterized in that it comprises the following steps:
(1) placing an aluminum-containing matrix in 3D printing equipment, laying titanium-containing powder on the upper surface of the aluminum-containing matrix, and then performing laser printing, wherein the titanium-containing powder is melted and cooled to form a titanium-containing protective layer;
(2) turning over the aluminum-containing substrate to enable the other surface to be an upper surface, repeating the step (1) until all surfaces form a titanium-containing protective layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform aluminum-containing coated substrate after all surfaces of the aluminum-containing substrate form the titanium-containing protective layer;
(3) applying bonding pressure to the coated aluminum-containing matrix obtained in the step (2), wherein the bonding pressure is 3-10 MPa, and performing vacuum annealing treatment to obtain the titanium-aluminum composite material.
6. The method according to claim 5, wherein the aluminum-containing substrate in the step (1) is fixed on a printing platform of a 3D printing device.
7. The method according to claim 5, wherein the aluminum-containing substrate in the step (1) is subjected to surface blasting before being loaded into the 3D printing equipment.
8. The production method according to claim 5, wherein the titanium-containing powder of step (1) has a particle size of not more than 53 μm.
9. The method of claim 5, wherein the titanium-containing powder of step (1) is uniformly applied to the upper surface of the aluminum substrate.
10. The preparation method according to claim 5, wherein the power of the laser printing in the step (1) is 250-300W.
11. The method according to claim 5, wherein the scanning speed of the laser in step (1) is 1000 to 1500 mm/s.
12. The manufacturing method according to claim 5, wherein the scanning pitch of the laser in the step (1) is 0.1 to 0.12 mm.
13. The preparation method according to claim 5, wherein after the laser printing in the step (1) is completed once, the operation is repeated by powder spreading again until a titanium-containing protective layer with a required thickness is obtained.
14. The method according to claim 5, wherein the thickness of the titanium-containing protective layer formed in step (1) is 1 to 3 mm.
15. The method according to claim 5, wherein the surface of the aluminum-containing substrate in the step (2) is flat.
16. The method according to claim 5, wherein the applying pressure in step (3) is applied to the entire surface of the substrate coated with aluminum.
17. The production method according to claim 5, wherein the conforming pressure of step (3) is applied by clamping with a jig.
18. The production method according to claim 5, wherein the vacuum annealing treatment of step (3) is performed in a vacuum annealing furnace.
19. The method of claim 18, wherein the vacuum annealing furnace is evacuated to a vacuum of 5 x 10- 3Pa or less.
20. The method according to claim 5, wherein the temperature of the vacuum annealing treatment in the step (3) is 500 to 550 ℃.
21. The preparation method according to claim 5, wherein the time of the vacuum annealing treatment in the step (3) is 0.5-2 h.
22. The method according to claim 5, wherein the cooling mode after the vacuum annealing treatment in the step (3) is furnace cooling.
23. The preparation method according to claim 22, wherein the cooling rate after the vacuum annealing treatment in the step (3) is 2-6 ℃/min.
24. The method of manufacturing according to claim 5, comprising the steps of:
(1) fixing an aluminum-containing substrate on a printing platform in 3D printing equipment, uniformly paving titanium-containing powder on the upper surface of the aluminum-containing substrate, wherein the particle size of the titanium-containing powder is not more than 53 microns, then carrying out laser printing, wherein the power of laser is 250-300W, the scanning speed is 1000-1500 mm/s, the scanning interval is 0.1-0.12 mm, melting and cooling the titanium-containing powder to form a titanium-containing protective layer, and paving powder again and repeating the operation until the titanium-containing protective layer with the thickness of 1-3 mm is obtained;
(2) turning over the aluminum-containing substrate to enable the other surface to be an upper surface, repeating the step (1) until all surfaces form a titanium-containing protective layer, and performing surface modification on the joint of the adjacent surfaces to form a flat and uniform titanium-containing protective layer to obtain the aluminum-containing-coated substrate;
(3) applying a bonding pressure of 3-10 MPa to the whole surface of the aluminum-containing substrate coated in the step (2), performing vacuum annealing treatment, and vacuumizing until the pressure reaches 5 multiplied by 10-3The temperature of the vacuum annealing treatment is 500-550 ℃ below Pa, and the heat preservation time is 0.5-2 h; and then cooling along with the furnace at a cooling rate of 2-6 ℃/min to obtain the titanium-aluminum composite material.
CN202010947180.XA 2020-09-10 2020-09-10 3D printing titanium-aluminum composite material and preparation method thereof Active CN112108653B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010947180.XA CN112108653B (en) 2020-09-10 2020-09-10 3D printing titanium-aluminum composite material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010947180.XA CN112108653B (en) 2020-09-10 2020-09-10 3D printing titanium-aluminum composite material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN112108653A CN112108653A (en) 2020-12-22
CN112108653B true CN112108653B (en) 2022-02-18

Family

ID=73802905

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010947180.XA Active CN112108653B (en) 2020-09-10 2020-09-10 3D printing titanium-aluminum composite material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN112108653B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112958785A (en) * 2021-02-02 2021-06-15 飞而康快速制造科技有限责任公司 3D printing copper-aluminum composite material and preparation method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3036408B1 (en) * 2015-05-21 2019-05-10 Safran Aircraft Engines COMPOSITION FOR THE MANUFACTURE OF TITANIUM ALUMINUM PIECES BY POWDER SINK, AND METHOD OF MANUFACTURE USING THE SAME
CN106378453B (en) * 2016-12-13 2019-02-12 西迪技术股份有限公司 A kind of brake lining and preparation method thereof
CN108409333B (en) * 2018-03-23 2020-11-10 扬州工业职业技术学院 AlMgB14-TiB2/Ti gradient functional composite material and preparation method thereof
CN108580850B (en) * 2018-05-14 2020-04-28 重庆大学 Preparation method of AlTi composite casting
CN110480124B (en) * 2018-05-15 2021-08-24 天津大学 Additive manufacturing method of titanium/aluminum dissimilar material
CN109317661B (en) * 2018-10-23 2021-07-16 华南理工大学 TiN/Al-based material composite powder and laser 3D printing forming method thereof
CN109332860B (en) * 2018-11-23 2021-01-05 大连理工大学 Arc additive manufacturing method of 5083 aluminum alloy/TC 4 titanium alloy structure
CN109822094A (en) * 2019-04-04 2019-05-31 江苏海宇机械有限公司 A kind of Al-Ti diverse metal alloy welding method
CN110205530B (en) * 2019-05-13 2021-01-08 湖南工业大学 Aluminum-based titanium surface brake disc for high-speed heavy-load train and forming method thereof
CN110756806B (en) * 2019-11-13 2022-05-17 北京工业大学 Ti/Al dissimilar alloy forming method based on selective laser melting technology

Also Published As

Publication number Publication date
CN112108653A (en) 2020-12-22

Similar Documents

Publication Publication Date Title
CN111992708B (en) Method for preparing high-performance diamond/copper composite material
CN109365803B (en) Additive manufacturing method of powder surface rare earth modified aluminum alloy complex component
CN110144502B (en) 3D printing aluminum-lithium alloy, preparation method thereof and part printing method thereof
CN109318547B (en) MAX phase ceramic-metal layered composite material, preparation method and application
CN112981163B (en) Preparation method of diamond-reinforced metal matrix composite with high surface precision and high reliability
CN112108653B (en) 3D printing titanium-aluminum composite material and preparation method thereof
CN111957975B (en) Preparation method of graphene reinforced copper-based composite material
CN105618883A (en) Manufacturing method for vacuum-brazed monolayer cBN (cubic Boron Nitride) grinding wheel
CN113579226B (en) Preparation method of multiphase reinforced titanium alloy composite material for additive manufacturing
CN111644619A (en) Preparation method of 3D printing isotropic high-strength aluminum alloy
CN107746280B (en) High-density TiB2Preparation method of ceramic target material
CN112375946B (en) High Mg2Si-aluminum alloy, design and rapid solidification preparation method and application thereof
CN112958785A (en) 3D printing copper-aluminum composite material and preparation method thereof
CN110904446A (en) Preparation method of titanium-aluminum part
CN1140374C (en) Superplastic diffusion process for joining different alloys and its application
CN110872713A (en) Y/Y2O3Cold spraying preparation method of metal ceramic protective coating
CN108754399B (en) Titanium diboride coating resistant to high-temperature fluoride molten salt corrosion and preparation method thereof
CN109321882B (en) Coating and method for improving interface bonding of diamond/magnesium composite electronic packaging material
CN111304478B (en) Method for preparing high-thermal-conductivity flake graphite/chromium carbide/titanium-based composite material
CN109848501B (en) High-strength brazing method for molybdenum-copper alloy and stainless steel
CN113996807A (en) Method for eliminating microcracks in selective laser melting additive manufacturing of 2024 aluminum alloy
CN113430432B (en) Preparation method of high-Zn light high-strength aluminum alloy
CN112066804A (en) W-based laminated composite material and preparation method thereof
CN112828306A (en) Laser powder bed fusion forming method for reducing heat cracks of precipitation strengthening nickel-based high-temperature alloy
CN110936680A (en) Intermediate alloy for titanium/carbon steel bimetal compounding and compounding process

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant