CN118287690A - TC4 alloy material and preparation method and application thereof - Google Patents
TC4 alloy material and preparation method and application thereof Download PDFInfo
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- CN118287690A CN118287690A CN202410400053.6A CN202410400053A CN118287690A CN 118287690 A CN118287690 A CN 118287690A CN 202410400053 A CN202410400053 A CN 202410400053A CN 118287690 A CN118287690 A CN 118287690A
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- 239000000956 alloy Substances 0.000 title claims abstract description 72
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- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims abstract description 20
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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]
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
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- A61L27/047—Other specific metals or alloys not covered by A61L27/042 - A61L27/045 or A61L27/06
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/56—Porous materials, e.g. foams or sponges
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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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
- 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
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/606—Coatings
- A61L2300/608—Coatings having two or more layers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61L2430/00—Materials or treatment for tissue regeneration
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Abstract
The application belongs to the technical field of medical materials, and particularly relates to a TC4 alloy material, and a preparation method and application thereof. The TC4 alloy material provided by the application comprises a laminated splint layer and a unit cell lattice layer; the upper surface and the lower surface of the TC4 alloy material are respectively splint layers, and the number of the unit cell lattice layers is 2 or 4; the thickness of the sandwich layer is 1mm, the unit cells in the unit cell lattice layer are rhombic dodecahedron, the edge length of the rhombic dodecahedron is n, and the n is any value of 3-4 mm; when the number of layers of the unit cell lattice layer is 2, the single-layer thickness of the unit cell lattice layer is 2n-1; when the number of layers of the unit cell lattice layer is 4, the single-layer thickness of the unit cell lattice layer is n-1. According to the application, the interlayer layer is added into the TC4 alloy material, so that stress concentration at the lattice structure node is improved, the stress distribution on the node is uniformly dispersed, and the fatigue resistance of the pore structure material is greatly improved.
Description
Technical Field
The invention belongs to the technical field of medical materials, and particularly relates to a TC4 alloy material, and a preparation method and application thereof.
Background
With the development of bone grafting and artificial prosthesis grafting technologies, the medical field has been growing in demand for bone and knee/hip implant materials, which has greatly stimulated the development of biological materials. The TC4 alloy has high strength, excellent ductility, excellent corrosion resistance and good biocompatibility, and has great application prospect in the field of bone grafting medicine. Meanwhile, the porous structure of the implant has the characteristic of light weight, can effectively reduce the elastic modulus, solves the problem of stress shielding, can meet the requirement of high-quality implants, and has wide application prospect in the medical field.
However, for bone implant materials, not only static loads, but also long-term dynamic cyclic loads are to be taken up in the human body. Therefore, the research on the fatigue performance of the porous structure is focused, so that the porous implant has important significance in improving the mechanical and fatigue performance of the porous implant. At present, an implant material is mainly prepared by an Additive Manufacturing (AM) technology, but when a unit cell of a porous structure is fixed, the fatigue resistance of the porous structure prepared by the AM is poor, so that the service life of the material is seriously influenced.
Disclosure of Invention
In view of the above, the invention provides a TC4 alloy material, a preparation method and application thereof, and the TC4 alloy material provided by the invention has good fatigue resistance and can prolong the service life of the TC4 alloy material as a bone grafting or prosthesis grafting material.
In order to solve the technical problems, the invention provides a TC4 alloy material which comprises a laminated splint layer and a unit cell lattice layer;
The upper surface and the lower surface of the TC4 alloy material are respectively splint layers, and the number of the unit cell lattice layers is 2 or 4; the thickness of the sandwich layer is 1mm, the unit cells in the unit cell lattice layer are rhombic dodecahedron, the edge length of the rhombic dodecahedron is n, and the n is any value of 3-4 mm; when the number of layers of the unit cell lattice layer is 2, the single-layer thickness of the unit cell lattice layer is 2n-1; when the number of layers of the unit cell lattice layer is 4, the single-layer thickness of the unit cell lattice layer is n-1.
Preferably, the TC4 alloy material has a height x width x length of (4n+1) ×2n×2n, and the splint layer has a height x width x length of 1×2n×2n; n is the length of the rhombic dodecahedron.
The invention also provides a preparation method of the TC4 alloy material, which comprises the following steps:
modeling and then carrying out model slicing treatment;
and 3D printing is carried out by taking TC4 alloy powder as a raw material, so that the TC4 alloy material is obtained.
Preferably, the TC4 alloy powder has an average particle diameter of 15 to 53 μm.
Preferably, the TC4 alloy powder is prepared by adopting an air atomization method.
Preferably, the conditions of the 3D printing are: the laser power is 170-210W, the scanning speed is 1000-1600 mm/s, the scanning interval is 0.08-0.12 mm, the powder spreading layer thickness is 0.03-0.06 mm, and the scanning strategy is scanning vectors alternately at 60-90 degrees.
Preferably, the modeling and model slicing processing software is Magics software.
The invention also provides application of the TC4 alloy material according to the technical scheme or the TC4 alloy material prepared by the preparation method according to the technical scheme as a bone grafting or prosthesis grafting material.
The invention provides a TC4 alloy material, which comprises a laminated splint layer and a unit cell lattice layer; the upper surface and the lower surface of the TC4 alloy material are respectively splint layers, and the number of the unit cell lattice layers is 2 or 4; the thickness of the sandwich layer is 1mm, the unit cells in the unit cell lattice layer are rhombic dodecahedron, the edge length of the rhombic dodecahedron is n, and the n is any value of 3-4 mm; when the number of layers of the unit cell lattice layer is 2, the single-layer thickness of the unit cell lattice layer is 2n-1; when the number of layers of the unit cell lattice layer is 4, the single-layer thickness of the unit cell lattice layer is n-1. The maximum stress of the TC4 alloy material (only the unit cell lattice layer) without the interlayer layer is concentrated on the hole edge crossing nodes of the rhombic dodecahedron, the nodes are stress concentration areas, the stress concentration at the lattice structure nodes is obviously improved along with the addition of the interlayer layer, the bending buckling performance of the component is improved (the bending strain of the central node is limited by the interlayer), the stress is uniformly dispersed on the nodes, the stress is decomposed to the positions of each hole edge and each node, and the fatigue resistance of the hole structure material is greatly improved.
Drawings
FIG. 1 is the result of stress analysis of a unit cell (rhombohedral dodecahedron);
fig. 2 is a schematic structural diagram and a physical diagram of the TC4 alloy materials prepared in examples 1 and 2 and comparative example 1, wherein (a) is a schematic structural diagram and (b) is a physical diagram;
FIG. 3 is a perspective view of the TC4 alloy material prepared in example 1;
FIG. 4 is a graph showing strain accumulation with cycle of the TC4 alloy materials prepared in examples 1 and 2 and comparative example 1, wherein (a) is a graph showing strain accumulation with cycle of L0, (b) is a graph showing strain accumulation with cycle of L1, and (c) is a graph showing strain accumulation with cycle of L3;
FIG. 5 shows the results of the finite element analysis of the TC4 alloy materials prepared in examples 1 and 2 and comparative example 1, wherein (a) is the result of the finite element analysis of L0, (b) is the result of the finite element analysis of L1, and (c) is the result of the finite element analysis of L3;
FIG. 6 is a graph showing engineering compressive stress-strain curves of TC4 alloy materials prepared in examples 1 and 2 and comparative example 1;
FIG. 7 is a plot of S-N points of the TC4 lattice structures of L0, L1, L3 in the interlayer layers of the TC4 alloy materials prepared in examples 1,2 and comparative example 1.
Detailed Description
The invention provides a TC4 alloy material, which comprises a laminated splint layer and a unit cell lattice layer; the upper surface and the lower surface of the TC4 alloy material are respectively a sandwich layer. In the invention, the number of the unit cell lattice layers is 2 or 4. In the invention, the number of the clamping plate layers is 1 more than that of the cell lattice layers. In the invention, the unit cells in the unit cell lattice layer are rhombic dodecahedron, the edge length of the rhombic dodecahedron is n, and n is any value of 3-4 mm, preferably 3mm; the included angle Kong Leng of the rhombic twelve hands-free lamp is preferably 36 degrees. In the present invention, the porosity of the unit cell is preferably 51 to 71%. In the invention, when the number of layers of the unit cell lattice layer is 2, the single-layer thickness of the unit cell lattice layer is 2n-1; when the number of layers of the unit cell lattice layer is 4, the single-layer thickness of the unit cell lattice layer is n-1; the thickness of the sandwich layer is 1mm. In the invention, each node of the rhombic dodecahedron serving as a unit cell is mutually connected to form a three-dimensional array. The thicknesses of the unit cell lattice layer and the clamping plate layer are limited in the range, so that the clamping plate layer can be ensured to be in direct contact with the nodes of the rhombic dodecahedron, and the fatigue resistance of the material is improved.
The type of stress on the porous structure can be broken down into bending and buckling stresses, both of which are affected by the cell geometry. Under the action of compression load, the cumulative effect of bending and buckling of the support plate has great influence on the mechanical properties of the porous structure. The sandwich structure is formed by introducing the clamping plate layers, so that the bending property and the buckling property of the member are improved, and the strength and the ductility of the member are improved. FIG. 1 is a graph showing the results of stress analysis on a single cell (rhombic dodecahedron) model; o, M is any two adjacent nodes in the lattice structure, P is positive pressure, P1 is a bending stress component, P2 is a bending stress component, bending deformation is easier than bending deformation, and obviously P1 is more than P2, so that for the splitless layer structure, P1 bending deformation is mainly used as a principal and subordinate mode and premature fatigue failure occurs; the sandwich structure limits the bending deformation movement after the sandwich layer is introduced, so that the stress is uniformly dispersed to the periphery from the central node in the fatigue process, the stress concentration of the central node is reduced, and the fatigue performance is greatly improved.
In the present invention, the TC4 alloy material preferably has a height x width x length of (4n+1) x 2n, and the splint layer preferably has a height x width x length of 1 x 2n; n is the length of the rhombic dodecahedron. In an embodiment of the present invention, the TC4 alloy material has a height x width x length of 13mm x 6mm, and the splint layer has a height x width x length of 1mm x 6mm.
The invention also provides a preparation method of the TC4 alloy material, which comprises the following steps:
modeling and then carrying out model slicing treatment;
and 3D printing is carried out by taking TC4 alloy powder as a raw material, so that the TC4 alloy material is obtained.
The invention carries out model slicing treatment after modeling. The present invention preferably performs modeling, model slicing processing, and 3D printing according to a laser selective melting technique (SLM). In the present invention, the modeling and model slicing processing software is preferably Magics software.
After model slicing treatment, the TC4 alloy material is obtained by 3D printing with TC4 alloy powder as a raw material. In the invention, the TC4 alloy powder is preferably prepared by adopting an air atomization method. In the present invention, the average particle diameter of the TC4 alloy powder is preferably 15 to 53. Mu.m, more preferably 15 to 39.7. Mu.m.
In the present invention, the conditions for 3D printing are preferably: the laser power is 170-210W, the scanning speed is 1000-1600 mm/s, the scanning interval is 0.08-0.12 mm, the powder spreading layer thickness is 0.03-0.06 mm, and the scanning strategy is scanning vectors alternately at 60-90 degrees; more preferably: the laser power is 190W, the scanning speed is 1400mm/s, the scanning interval is 0.1mm, the powder spreading layer thickness is 0.03mm, and the scanning strategy is that the scanning vectors are scanned alternately at 67 degrees. The invention can reduce residual stress caused by local heating and rapid cooling by adopting the 3D printing condition parameters, and strengthen the combination of adjacent tracks and layers.
The design of the sandwich structure in the porous TC4 alloy material changes the stress distribution of the support and the nodes, thereby changing the fatigue deformation mechanism of the structure. The TC4 alloy (alpha+beta type) sandwich structure with different splint layer configurations is designed and prepared through the additive manufacturing technology. The result shows that the remarkable improvement of the fatigue resistance of the sandwich structure benefits from the fact that the stress concentration at the node is reduced by the structure, and the deformation mode of the porous structure is changed.
The invention also provides application of the TC4 alloy material prepared by the technical scheme or the preparation method of the technical scheme as a bone grafting or prosthesis grafting material.
The technical solutions provided by the present invention are described in detail below in conjunction with examples for further illustrating the present invention, but they should not be construed as limiting the scope of the present invention.
Example 1
Modeling by utilizing Magics software to obtain a TC4 alloy material model; the sandwich layer and the unit cell lattice layer are laminated in the model, wherein the number of the unit cell lattice layers is 4, the thickness of each unit cell lattice layer is 2mm, the edge length of the rhombus dodecahedron in the unit cell lattice layer is 3mm, the Kong Leng included angle is 36 degrees, and the unit cell porosity of the rhombus dodecahedron is 71%; the thickness of the interlayer layer is 1mm, and the number of layers is 5; the TC4 alloy material is a cuboid, and the height, width and length of the cuboid are 13mm, 6mm and 6mm;
Performing model slicing treatment on a TC4 alloy material model by utilizing Magics software, and performing 3D printing by taking TC4 alloy powder with an average particle size of 39.7 mu m according to an air atomization method as a raw material to obtain a TC4 alloy material, and marking the TC4 alloy material as L3; the conditions for 3D printing are: the laser power is 190W, the scanning speed is 1400mm/s, the scanning interval is 0.1mm, the powder spreading layer thickness is 0.03mm, and the scanning strategy is that the scanning vectors are scanned alternately at 67 degrees.
Example 2
TC4 alloy materials were prepared as in example 1, except that the number of cell lattice layers was 2, the thickness of each cell lattice layer was 5mm, and the length of the rhombic dodecahedron in the cell lattice layer was 3mm; the number of the interlayer layers is 3; the TC4 alloy material was obtained and designated L1.
Comparative example 1
TC4 alloy materials were prepared as in example 1, except that the number of layers of the cell lattice layer was 1, the thickness was 11mm, and the length of the rhombic dodecahedron in the cell lattice layer was 3mm; the number of the sandwich layers is 2; the TC4 alloy material was obtained and designated L0.
Fig. 2 is a schematic structural view and a physical view of the TC4 alloy materials of examples 1 and 2 and comparative example 1, wherein (a) is a schematic structural view and (b) is a physical view. Fig. 3 is a perspective view of the TC4 alloy material prepared in example 1.
The TC4 alloy materials prepared in examples 1, 2 and comparative example 1 were subjected to 6 sets of high cycle fatigue tests, the parameter stress ratio was r=0.1, the test frequency was 10Hz, the waveform was a sine wave, the applied load was 2500N-3750N (each 250N added as a test load), the specific test condition parameters were as shown in table 1, and the strain accumulation curves of the sandwich lattice structure samples with the change of the cycles were summarized through 6 sets of tests, respectively, as shown in fig. 4, wherein (a) is a strain accumulation curve with the change of L0 with the change of the cycles, (b) is a strain accumulation curve with the change of L1 with the change of the cycles, and (c) is a strain accumulation curve with the change of the L3 with the change of the cycles.
TABLE 1 test condition parameters for high cycle fatigue experiments
The reflection and prediction of fatigue life is typically analyzed by strain-life curves tested under cyclic loading, as can be seen from the logarithmic scale, as shown in fig. 4, the accumulation of strain epsilon over the trend of N over the week can be roughly divided into three phases: the phase I is N < 100, and represents obvious strain accumulation in the initial phase; stage II is 100 < N < Nc (strain inflection point is shown as Nc in graph (a)), which is characterized by a nearly constant or very small accumulation of strain accumulation rate over a longer cycle period; stage iii is a rapid rise in strain beyond inflection point Nc. The strain inflection point Nc is continuously reduced along with the increase of the applied stress, and meanwhile, the more the number of interlayers in the lattice structure is, the strain inflection point Nc is obviously moved to the right, and the mechanical property stability and fatigue property of the structure are obviously enhanced. From fig. 4, it can be seen that the fatigue life of the lattice structures of the different interlayers (L0, L1, L3) is largely dependent on the second stage of fatigue strain accumulation, the second stage of strain rate during L3 fatigue strain is the lowest, and the fatigue life is the longest.
The results of the finite element analysis of the TC4 alloy materials prepared in examples 1,2 and comparative example 1, respectively, are shown in fig. 5, where (a) is the finite element analysis result of L0, (b) is the finite element analysis result of L1, and (c) is the finite element analysis result of L3. As can be seen from FIG. 5, the maximum stress concentration without the enhancement layer (L0) occurs at the nodes where the hole edges intersect, which are stress concentration areas, and with the addition of the enhancement layer (L3), the stress concentration at the nodes of the lattice structure is obviously optimized, the bending and buckling performance of the member is improved, the distribution of the stress on the nodes is uniformly dispersed, and all the stress is uniformly decomposed to the positions of each hole edge and each node.
The TC4 alloy materials prepared in examples 1,2 and comparative example 1 were subjected to mechanical static compression test, respectively, and engineering compressive stress-strain curves are shown in fig. 6, and the performance parameters of the obtained compressive strength, yield strength and ductility are shown in table 2.
TABLE 2 mechanical Properties of TC4 alloy materials prepared in examples 1 and 2 and comparative example 1
| Test materials | Compressive strength (Mpa) | Yield strength (Mpa) | Ductility (%) |
| L0 | 108 | 83 | 7.5 |
| L1 | 120 | 94 | 6.7 |
| L3 | 148 | 125 | 5.5 |
As can be seen from fig. 6, all compression curves (solid line) have three deformation phases, namely an initial line elastic deformation phase, a platform plastic deformation phase and a densification process phase (progressive compaction of the pores). The compressive strength of the L0 sample is lowest, the L1 sample breaks when the strain reaches 7.5%, the compressive strength (120 MPa) of the L1 sample is obviously improved (about 12MPa is improved), but the ductility is slightly reduced, the compressive strength of the L3 sample is further improved, an obvious platform effect appears in the strain process, and a plurality of strain inflection points appear in the L3 sample at the same time, so that an obvious densification process is shown. The compressive yield strength of L3 (125 MPa) is improved by nearly 50% compared with the compressive yield strength of L0 (83 MPa).
The stress life curves (fatigue S-N curves) of the TC4 alloy materials prepared in examples 1, 2 and comparative example 1, respectively, were obtained according to the cycle of fatigue failure of the strain-life curves of fig. 4, as shown in fig. 7. As can be seen from fig. 7, the fatigue performance of L3 far exceeded L0 and L1. When the fatigue high cycle strain reaches 10 6 weeks, the fatigue strength (25 Mpa) of L1 is about 1.25 times that of L0 (20 Mpa), and the fatigue strength (50 Mpa) of L3 is about 2.5 times that of L0 (20 Mpa).
Although the foregoing embodiments have been described in some, but not all, embodiments of the invention, it should be understood that other embodiments may be devised in accordance with the present embodiments without departing from the spirit and scope of the invention.
Claims (8)
1. A TC4 alloy material comprising a laminated interlayer layer and a cell lattice layer;
The upper surface and the lower surface of the TC4 alloy material are respectively splint layers, and the number of the unit cell lattice layers is 2 or 4; the thickness of the sandwich layer is 1mm, the unit cells in the unit cell lattice layer are rhombic dodecahedron, the edge length of the rhombic dodecahedron is n, and the n is any value of 3-4 mm; when the number of layers of the unit cell lattice layer is 2, the single-layer thickness of the unit cell lattice layer is 2n-1; when the number of layers of the unit cell lattice layer is 4, the single-layer thickness of the unit cell lattice layer is n-1.
2. The TC4 alloy material according to claim 1 wherein said TC4 alloy material has a height x width x length of (4n+1) x 2n and said splint layer has a height x width x length of 1 x 2n; n is the length of the rhombic dodecahedron.
3. A method of producing the TC4 alloy material according to claim 1 or 2, comprising the steps of:
modeling and then carrying out model slicing treatment;
and 3D printing is carried out by taking TC4 alloy powder as a raw material, so that the TC4 alloy material is obtained.
4. The method according to claim 3, wherein the TC4 alloy powder has an average particle diameter of 15 to 53. Mu.m.
5. The method according to claim 3 or 4, wherein the TC4 alloy powder is prepared by an aerosol method.
6. A method of manufacture according to claim 3, wherein the conditions for 3D printing are: the laser power is 170-210W, the scanning speed is 1000-1600 mm/s, the scanning interval is 0.08-0.12 mm, the powder spreading layer thickness is 0.03-0.06 mm, and the scanning strategy is scanning vectors alternately at 60-90 degrees.
7. A method of manufacturing according to claim 3, wherein the modeling and model slicing process software is Magics software.
8. Use of the TC4 alloy material according to claim 1 or 2 or the TC4 alloy material prepared by the preparation method according to any one of claims 3 to 7 as a bone graft or prosthesis graft material.
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