CN115229203B - Nickel-titanium-based alloy and titanium alloy composite material and 4D printing method thereof - Google Patents
Nickel-titanium-based alloy and titanium alloy composite material and 4D printing method thereof Download PDFInfo
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- CN115229203B CN115229203B CN202210733846.0A CN202210733846A CN115229203B CN 115229203 B CN115229203 B CN 115229203B CN 202210733846 A CN202210733846 A CN 202210733846A CN 115229203 B CN115229203 B CN 115229203B
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 77
- 229910001000 nickel titanium Inorganic materials 0.000 title claims abstract description 69
- 239000000956 alloy Substances 0.000 title claims abstract description 66
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 238000007639 printing Methods 0.000 title claims abstract description 55
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 53
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 34
- 238000002844 melting Methods 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 18
- RWEFVPQWLOQTSN-UHFFFAOYSA-N 2-chloroethyl n-propylcarbamate Chemical compound CCCNC(=O)OCCCl RWEFVPQWLOQTSN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 6
- WCERXPKXJMFQNQ-UHFFFAOYSA-N [Ti].[Ni].[Cu] Chemical compound [Ti].[Ni].[Cu] WCERXPKXJMFQNQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 101000666657 Homo sapiens Rho-related GTP-binding protein RhoQ Proteins 0.000 claims description 5
- 102100038339 Rho-related GTP-binding protein RhoQ Human genes 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 8
- 229910052796 boron Inorganic materials 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 4
- 229910000765 intermetallic Inorganic materials 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003446 memory effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
- B22F1/12—Metallic powder containing non-metallic 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
-
- 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
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- 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
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
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Abstract
The invention discloses a nickel-titanium-based alloy and titanium alloy composite material and a 4D printing method thereof, wherein the 4D printing method comprises the steps of mixing carbon powder, boron powder and CB 4 Uniformly mixing at least one of the powder with titanium alloy to obtain a mixed material; and (3) adopting selective laser melting to print and shape the nickel-titanium-based alloy as a lower layer material, paving a mixed material on the upper surface of the lower layer material, and adopting selective laser melting to print and shape the mixed material to obtain the composite material with the titanium alloy upper layer and the nickel-titanium-based alloy lower layer. The invention adds boron element and/or carbon element into titanium alloy to lead the titanium element to preferentially form TiB with C and B 2 Phase, tiC phase, thereby avoiding brittle intermetallic compound Ti 2 The Ni phase is generated, so that the interface joint of the composite material is tightly combined, solidification cracking and brittle fracture at the interface joint can not occur, the finally formed composite material is in direct contact with the titanium alloy and the nickel-titanium base alloy, and a transition layer is not arranged in the middle, so that the overall performance of the composite material is ensured.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing and advanced manufacturing, and particularly relates to a nickel-titanium-based alloy and titanium alloy composite material and a 4D printing method thereof.
Background
The titanium alloy has good comprehensive mechanical properties, such as high specific strength, good corrosion resistance, good biocompatibility and the like, and the titanium has quite abundant reserves in the crust, has the potential of further development, is one of engineering materials with wide application prospect, and is widely applied to the fields of aerospace, biomedical treatment, shipbuilding industry, nuclear industry, chemical industry and the like;
the NiTi series shape memory alloy is characterized by excellent shape memory effect and recoverable deformation up to 8%, and becomes the shape memory alloy with the largest dosage, the expansion rate of the shape memory alloy is more than 20%, the fatigue life of the shape memory alloy is 7 times of 1 x 10, the damping characteristic is 10 times higher than that of a common spring, and the corrosion resistance of the shape memory alloy is superior to that of the medical stainless steel which is the best at present. NiTi shape memory alloys are widely used as the toughening phase in composite materials. The toughening mechanism is mainly that NiTi shape memory alloy can generate stress to induce martensitic transformation under high stress concentration, thereby releasing stress and preventing crack expansion; and the NiTi alloy can also generate plastic deformation, so that the stress is further eliminated, and crack propagation is prevented.
Based on their respective excellent mechanical properties and functional properties, it is necessary to study components or products that have both advantages. However, titanium alloys such as TC 4 Physical-chemical property mismatch with NiTi series shape memory alloy, ni of NiTi series shape memory alloy diffuses to titanium alloy such as TC at interface joint 4 In-between alloys brittle intermetallic compounds (mainly Ti 2 Ni) can lead to solidification cracking and brittle failure at the interface junction. This makes the combination of NiTi-based alloys and titanium alloy dissimilar materials a challenge, which in turn makes it difficult to implement large-scale applications for their dissimilar material component products, impeding their component product design and development. The prior method mainly adds a transition layer to isolate the two layers from direct connection so as to avoid the generation of brittle materials, however, the added intermediate transition layer can limit the overall performance to be similar to that originally conceivedIs intentionally offset by a combination of both.
Therefore, the existing nickel-titanium base alloy and titanium alloy composite technology has the technical problems of solidification cracking and brittle failure at the interface joint, and difficulty in ensuring the overall performance of the composite material.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a nickel-titanium-based alloy and titanium alloy composite material and a 4D printing method thereof, thereby solving the technical problems that the interface joint of the traditional nickel-titanium-based alloy and titanium alloy composite technology is solidified and cracked, brittle failure and difficult to ensure the overall performance of the composite material.
To achieve the above object, according to one aspect of the present invention, there is provided a 4D printing method based on a nickel-titanium base alloy and titanium alloy composite material, comprising the steps of:
(1) Carbon powder, boron powder and CB 4 Uniformly mixing at least one of the powder with titanium alloy to obtain a mixed material;
(2) And (3) adopting selective laser melting to print and shape the nickel-titanium-based alloy as a lower layer material, paving a mixed material on the upper surface of the lower layer material, and adopting selective laser melting to print and shape the mixed material to obtain the composite material with the titanium alloy upper layer and the nickel-titanium-based alloy lower layer.
Further, when the mixed material is printed and molded by adopting selective laser melting, tiC phases are formed by carbon powder and titanium alloy in the mixed material.
Further, when the mixed material is printed and molded by adopting selective laser melting, the boron powder and the titanium alloy in the mixed material form TiB 2 And (3) phase (C).
Further, when the mixed material is printed and molded by adopting selective laser melting, CB in the mixed material 4 The powder and titanium alloy form TiC phase and TiB 2 And (3) phase (C).
Further, the carbon powder, the boron powder and the CB 4 The powder is spherical powder with particle size of 10-50 μm.
Further, when the nickel-titanium-based alloy is printed and molded by adopting selective laser melting, the laser power is 100W-400W, the scanning speed is 400mm/s-1000mm/s, the powder layer thickness is 30 μm-50 μm, and the scanning interval is 115 μm-124 μm.
Further, when the mixed material is printed and molded by adopting selective laser melting, the laser power is 100W-400W, the scanning speed is 400mm/s-1000mm/s, the powder layer thickness is 30 μm-50 μm, and the scanning interval is 115 μm-124 μm.
Further, the titanium alloy is TC10 titanium alloy, TC4 titanium alloy, TC2 titanium alloy or TC1 titanium alloy.
Further, the nickel-titanium-based alloy is nickel-titanium alloy or nickel-titanium-copper alloy.
According to another aspect of the invention, a nickel-titanium-based alloy and titanium alloy-based composite material is provided, wherein the upper layer of the composite material is a titanium alloy, the lower layer of the composite material is a nickel-titanium-based alloy, and the composite material is printed by a 4D printing method based on the nickel-titanium-based alloy and titanium alloy composite material.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) A molten pool is formed after laser melting metal powder, and boron element and/or carbon element are added into titanium alloy to make titanium element preferentially form TiB with C and B 2 Phase and/or TiC phase, tiB 2 The phase and/or TiC phase is due to the specific Ti 2 The Ni phase has a higher melting point and a lower ΔG, therefore TiB 2 And TiC will preferentially precipitate from the molten pool, thereby avoiding brittle intermetallic compound Ti 2 The generation of Ni phase makes the interface joint of the composite material tightly combined, and solidification cracking and brittle failure of the interface joint can not occur. Finally, the composite material with the upper layer of titanium alloy and the lower layer of nickel-titanium-based alloy is formed, the titanium alloy is in direct contact with the nickel-titanium-based alloy, and a transition layer is not arranged in the middle, so that the overall performance of the composite material is ensured.
(2) Dispersed TiB in a matrix 2 The phase and/or TiC phase can also play a role in strengthening and toughening, and the microhardness, tensile strength and yield strength of the alloy are all obviously improved. The finally formed composite material has super-strengthElasticity and shape memory effect, and also has high hardness, wear resistance and corrosion resistance.
(3) When 4D printing forming is carried out by adopting selective laser melting, carbon powder, boron powder and CB are used for printing forming 4 The powder is spherical powder, so that the fluidity is good, and the powder is suitable for laying powder. Since the layer thickness is greater than or equal to the particle size at the time of 4D printing, the particle size is set to 10 μm to 50 μm.
(4) When the material is printed and molded by adopting selective laser melting, the laser power, the scanning speed, the powder layer thickness and the scanning interval are limited, so that the molded nickel-titanium alloy material and titanium alloy material generate tight metallurgical bonding, and the overall performance of the composite material is ensured.
Drawings
FIG. 1 is a schematic illustration of a composite material provided by an embodiment of the present invention;
FIG. 2 is a diagram of a composite material according to example 1 of the present invention;
FIG. 3 is a diagram of a composite material according to example 2 of the present invention;
fig. 4 is a schematic diagram of a composite material according to example 3 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
A 4D printing method based on nickel-titanium base alloy and titanium alloy composite material, comprising the steps of:
(1) Carbon powder, boron powder and CB 4 Uniformly mixing at least one of the powder with titanium alloy to obtain a mixed material;
(2) And (3) adopting selective laser melting to print and shape the nickel-titanium-based alloy as a lower layer material, paving a mixed material on the upper surface of the lower layer material, and adopting selective laser melting to print and shape the mixed material to obtain the composite material with the titanium alloy upper layer and the nickel-titanium-based alloy lower layer.
Before printing, carbon powder, boron powder and CB 4 One or more of the powder and part of the titanium alloy material are mixed evenly by a method of ball milling, alcohol adding, stirring and drying according to a proper proportion. Carbon powder, boron powder, CB 4 The mass ratio of at least one of the powder and the titanium alloy is (5-10) to 1000.
The specific steps of printing comprise:
s1, modeling nickel-titanium base alloy and titanium alloy composite materials to be printed in 4D by utilizing three-dimensional modeling software such as UG and CREO, and inputting the materials into 4D printing equipment;
s2, starting printing, namely taking nickel-titanium powder as a powder material, taking a nickel-titanium alloy material plate as a substrate, and carrying out sand blasting treatment after grinding the substrate before printing;
s3, closing a cabin door of the 4D printing equipment, opening a gas circulation system, injecting protective gas to enable the oxygen content in a molding cavity of the 4D printing equipment to be lower than 200ppm, and preheating a substrate to 100-300 ℃;
s4, when the oxygen content and the preheating temperature reach set values, starting laser scanning to form the nickel-titanium material, wherein the laser power is 100W-400W, the scanning speed is 400mm/S-1000mm/S, the powder layer thickness is 30-50 mu m, and the scanning interval is 115-124 mu m;
s5, after the nickel-titanium alloy material is molded, paving powder materials such as carbon powder, boron powder and CB 4 Repeating the step S4 by mixing one or more of the powders with the titanium alloy material; the mixed material is molded by the technological parameters, and the molded nickel-titanium alloy material and titanium alloy material are tightly metallurgically bonded.
As shown in FIG. 1, the invention adopts nickel-titanium-based alloy material, titanium alloy material and one or more of carbon powder, boron powder and CB4 powder, and is integrally manufactured and molded through 4D printing. Finally, the composite material with the upper layer of titanium alloy and the lower layer of nickel-titanium-based alloy is formed, the titanium alloy is in direct contact with the nickel-titanium-based alloy, and a transition layer is not arranged in the middle, so that the overall performance of the composite material is ensured. By adding boron element and/or carbon element into titanium alloy, and titanium element in titanium alloyTiB formation 2 Phase and/or TiC phase (i.e., particles in fig. 1), tiB 2 The phase and/or TiC phase is due to the specific Ti 2 The Ni phase has a higher melting point and a lower ΔG, therefore TiB 2 And/or TiC may preferentially precipitate from the bath, thereby avoiding brittle intermetallic compounds Ti 2 Generation of Ni phase. In addition to this, dispersed TiB in the matrix 2 The phase and/or TiC phase can also play a role in strengthening and toughening, and the microhardness, tensile strength and yield strength of the alloy are all obviously improved.
Example 1
A 4D printing method based on nickel-titanium based alloy and titanium alloy composite material, using Selective Laser Melting (SLM) to form a sample, printing nickel-titanium alloy on the lower layer, printing TC4 (Ti-6 A1-4V) alloy on the upper layer, comprising:
modeling the nickel-titanium alloy and TC4 alloy composite material to be printed by utilizing three-dimensional modeling software UG, and inputting the modeling software UG into 4D printing equipment;
and (3) forming nickel-titanium alloy by adopting SLM printing, printing nickel-titanium alloy on the lower layer, and printing powder obtained by mixing carbon powder and titanium alloy material on the upper layer. The particle size of the carbon powder is 10 mu m, the mass of the carbon powder is 5g, the mass of the titanium alloy powder is 1000g, the laser power of lower layer printing is 200W, the scanning speed is 1000mm/s, the layer thickness is 50 mu m, and the scanning interval is 120 mu m; the laser power for upper layer printing was 300W, the scanning speed was 800mm/s, the layer thickness was 50 μm, and the scanning pitch was 120. Mu.m.
The nickel-titanium base alloy and titanium alloy composite material obtained by printing is shown in fig. 2.
Example 2
A4D printing method based on nickel-titanium base alloy and titanium alloy composite material adopts Selective Laser Melting (SLM) to form a sample, the lower layer prints nickel-titanium-copper alloy, and the upper layer prints TC10 titanium alloy, comprising:
modeling the nickel-titanium-copper alloy to be printed and the TC10 titanium alloy composite material by utilizing three-dimensional modeling software UG, and inputting the three-dimensional modeling software UG into 4D printing equipment;
and (3) forming nickel-titanium-based alloy by adopting SLM printing, printing nickel-titanium-copper alloy on the lower layer, and printing powder obtained by mixing boron powder and titanium alloy material on the upper layer. The grain diameter of the boron powder is 30 mu m, the laser power of lower layer printing is 400W, the scanning speed is 1000mm/s, the layer thickness is 30 mu m, and the scanning interval is 115 mu m; the laser power for upper layer printing was 300W, the scanning speed was 800mm/s, the layer thickness was 50 μm, and the scanning pitch was 115. Mu.m.
The nickel-titanium base alloy and titanium alloy composite material obtained by printing is shown in fig. 3.
Example 3
A4D printing method based on nickel-titanium base alloy and titanium alloy composite material adopts Selective Laser Melting (SLM) to form a sample, the lower layer prints nickel-titanium-copper alloy, and the upper layer prints TC10 titanium alloy, comprising:
modeling the nickel-titanium alloy and TC2 titanium alloy composite material to be printed by utilizing three-dimensional modeling software UG, and inputting the three-dimensional modeling software UG into 4D printing equipment;
forming nickel-titanium alloy by SLM printing, printing nickel-titanium alloy on the lower layer and printing CB on the upper layer 4 Powder obtained by mixing the powder and a titanium alloy material. CB (CB) 4 The grain diameter of the powder is 50 mu m, the laser power of lower layer printing is 100W, the scanning speed is 400mm/s, the layer thickness is 50 mu m, and the scanning interval is 124 mu m; the laser power for upper layer printing was 200W, the scanning speed was 800mm/s, the layer thickness was 50 μm, and the scanning pitch was 124. Mu.m.
The nickel-titanium base alloy and titanium alloy composite material obtained by printing is shown in fig. 4.
The composite material formed by the invention has super-elasticity and shape memory effect, and also has high hardness, wear resistance and corrosion resistance.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A 4D printing method based on nickel-titanium base alloy and titanium alloy composite material, characterized by comprising the following steps:
(1) Carbon powder, boron powder and CB 4 At least one of the powder is uniform with the titanium alloyMixing to obtain a mixed material;
(2) Printing and forming the nickel-titanium-based alloy by adopting selective laser melting, paving a mixed material on the upper surface of the lower material as a lower material, and printing and forming the mixed material by adopting selective laser melting to obtain a composite material with the upper layer of titanium alloy and the lower layer of nickel-titanium-based alloy;
when the mixed material is printed and molded by adopting selective laser melting, carbon powder in the mixed material and titanium alloy form TiC phase, and boron powder in the mixed material and titanium alloy form TiB 2 CB in phase, mixed material 4 The powder and titanium alloy form TiC phase and TiB 2 And (3) phase (C).
2. A 4D printing method based on nickel-titanium base alloy and titanium alloy composite material according to claim 1, wherein the carbon powder, boron powder, CB 4 The powder is spherical powder with particle size of 10-50 μm.
3. A 4D printing method based on nickel-titanium base alloy and titanium alloy composite material according to claim 1 or 2, wherein the laser power is 100W-400W, the scanning speed is 400mm/s-1000mm/s, the powder layer thickness is 30 μm-50 μm, and the scanning interval is 115 μm-124 μm when the nickel-titanium base alloy is printed and formed by adopting selective laser melting.
4. A 4D printing method based on nickel-titanium base alloy and titanium alloy composite material according to claim 1 or 2, wherein the laser power is 100W-400W, the scanning speed is 400mm/s-1000mm/s, the powder layer thickness is 30 μm-50 μm, and the scanning interval is 115 μm-124 μm when the mixed material is printed and formed by adopting selective laser melting.
5. A 4D printing method based on nickel-titanium base alloy and titanium alloy composite material according to claim 1 or 2, wherein the titanium alloy is TC10 titanium alloy, TC4 titanium alloy, TC2 titanium alloy or TC1 titanium alloy.
6. A 4D printing method based on nickel-titanium-based alloy and titanium alloy composite material according to claim 1 or 2, wherein the nickel-titanium-based alloy is nickel-titanium alloy or nickel-titanium-copper alloy.
7. The composite material based on the nickel-titanium-based alloy and the titanium alloy is characterized in that the upper layer of the composite material is the titanium alloy and the lower layer of the composite material is the nickel-titanium-based alloy, and the composite material is printed by the 4D printing method based on the nickel-titanium-based alloy and the titanium alloy according to any one of claims 1-6.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030427A (en) * | 1974-10-30 | 1977-06-21 | The United States Of America As Represented By The Secretary Of The Navy | Armor plate |
| JPH0681055A (en) * | 1991-12-25 | 1994-03-22 | Nikko Kinzoku Kk | Production of nickel-containing titanium alloy ingot |
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| US4030427A (en) * | 1974-10-30 | 1977-06-21 | The United States Of America As Represented By The Secretary Of The Navy | Armor plate |
| JPH0681055A (en) * | 1991-12-25 | 1994-03-22 | Nikko Kinzoku Kk | Production of nickel-containing titanium alloy ingot |
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