CN115505923A - Method for preparing titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding - Google Patents
Method for preparing titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding Download PDFInfo
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- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- B22F1/09—Mixtures of metallic powders
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- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to the technical field of surface strengthening of titanium alloy materials, in particular to a method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding, which comprises the following steps: s1, taking TA15-2 titanium alloy as a base material, and pretreating the surface of the base material; s2, cladding TribaloyX40-Cr-Ni-SiC-Cu powder on the surface of the base material by laser in a coaxial powder feeding mode to form a cladding layer; and S3, laser cladding TribaloyX40-Cr-Ni-Cu powder on the surface of the cladding layer by adopting a coaxial powder feeding mode, and forming a cladding lamination on the surface of the base material to obtain the corrosion-resistant laminated material. The method provided by the invention can be used for carrying out surface strengthening on the TA15-2 base material to form the laser cladding lamination which is good in metallurgical bonding with the base material and good in corrosion resistance, and is suitable for the field of preparation and repair of industrial structural members.
Description
Technical Field
The invention relates to the technical field of surface strengthening of titanium alloy materials, in particular to a method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding.
Background
Based on the advantages of low density, high strength, good corrosion resistance and the like of the TA15-2 titanium alloy, the titanium alloy is widely applied to the fields of aerospace and the like, but the application of the titanium alloy is limited by the problems of poor surface performance, such as low corrosion resistance and the like.
The laser cladding has the characteristics of concentrated energy density, rapid heating and cooling and the like, can further improve the surface corrosion resistance and mechanical properties of titanium alloy parts, prolongs the service life of the titanium alloy industrial parts and reduces the production cost. Co, cr and Ni in the CoCrNi medium entropy alloy have approximately equal molar ratio, the mixed entropy value is between 1R and 1.5R, the framework that the traditional metal takes a single element as a principal element is broken through, multiple effects of multiple elements can be obtained by the unique alloy design and the component proportion, an FCC phase with a stable structure is obtained by laser cladding, the high mechanical property is achieved at normal temperature, the ductility and toughness and strength of the alloy are obviously enhanced along with temperature reduction, and the high entropy medium entropy alloy has wide research value and application prospect in the field of metal material surface modification. The SiC ceramic particles have the characteristics of high hardness, excellent corrosion resistance, good chemical stability and the like; the addition of Cu can promote the generation of a nano crystalline phase, obtain a fine structure of crystal grains, promote the generation of an amorphous phase under the action of lattice distortion, and further improve the corrosion resistance of a cladding layer.
Disclosure of Invention
Aiming at the technical problem of poor corrosion resistance of the TA15-2 titanium alloy material, the invention provides a method for preparing a Tribaloy-based corrosion-resistant laminated material by laser cladding, which improves the corrosion resistance of the TA15-2 titanium alloy substrate surface.
The invention provides a method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding, which comprises the following steps:
s1, taking TA15-2 titanium alloy as a base material, and pretreating the surface of the base material;
s2, cladding TribaloyX40-Cr-Ni-SiC-Cu powder on the surface of the base material by adopting a coaxial powder feeding mode to form a cladding layer;
and S3, laser cladding TribaloyX40-Cr-Ni-Cu powder on the surface of the cladding layer in a coaxial powder feeding mode, and forming a cladding lamination on the surface of the base material to obtain the corrosion-resistant lamination material.
Further, in the step S1, the surface of the substrate is pretreated by polishing the surface of the substrate with sand paper, cleaning the surface of the substrate with acetone, washing with clear water, and then treating with alcohol.
Further, the TA15-2 titanium alloy base material comprises the following chemical components in percentage by weight: al 2.660%, mo 1.100%, V1.320%, zr 1.660%, fe 0.090%, si 0.080%, C0.050%, N0.040%, O0.120%, and the balance Ti.
Further, in step S2, the TribaloyX40-Cr-Ni-SiC-Cu powder includes the following powders by weight percent: tribaloyX 40%, cr 23%, ni 13%, siC 7% and Cu 2%; the purity of each powder is more than 99.5 percent.
Furthermore, the particle size of TribaloyX40 powder is 40-60 μm, the particle size of Cr powder is 40-60 μm, the particle size of Ni powder is 40-60 μm, the particle size of SiC powder is 40-60 μm, and the particle size of Cu powder is 150-250 μm.
Further, in step S3, the TribaloyX40-Cr-Ni-Cu powder includes the following powders by weight percent: tribaloyX 40%, cr 26%, ni 14% and Cu 1%; the purity of each powder is more than 99.5 percent.
Further, the TribaloyX40 comprises the following chemical components in percentage by weight: 0.850% of C, 25.000% of Cr, 0.300% of Si, 7.500% of W, 1.000% of Fe, 10.000% of Ni, 0.300% of Mn and the balance of Co.
Further, the laser cladding processes of step S2 and step S3 are both: the laser power is 1000-1200W, the scanning speed of the laser beam is 13-17 mm/s, the diameter of a light spot is 2-4 mm, the lap joint rate is 20-40%, the powder feeding speed is 10-15 g/min, meanwhile, argon with the purity of 99.9% is used as shielding gas, and the flow rate of the argon is 30L/min.
The principle of the invention is as follows:
(1) According to the invention, a laser cladding mode is utilized to carry out multi-channel double-layer laser cladding on the TA15-2 titanium alloy substrate, and three elements of Co, cr and Ni with equal molar ratio are added into the cladding layer to promote the generation of a multielement phase, so that a uniform and compact laser cladding lamination is formed, and the mechanical properties of the substrate surface, such as strength, wear resistance, corrosion resistance, and the like, are improved.
(2) According to the invention, two layers of Tribaloy-based alloy powder with different component ratios are continuously cladded, and meanwhile, remelting treatment can be carried out on the lower cladding layer by laser, so that structure grains are refined, and the formation of defects is reduced.
(3) According to the invention, siC is added into laser cladding powder and reacts with high melting point Ti to generate hard phases such as Ti-Si and Ti-C, and Si is added to effectively promote the generation of an amorphous phase with strong corrosion resistance; ti dilution increases the solidification supercooling degree of the alloy, and the corrosion resistance of the cladding layer is enhanced through fine grain strengthening.
The invention has the beneficial effects that: the method provided by the invention can be used for carrying out surface strengthening on the TA15-2 base material to form the laser cladding lamination which is good in metallurgical bonding with the base material and good in corrosion resistance, and is suitable for the field of preparation and repair of industrial structural members.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is an SEM image of Tribaloy-based laser cladding stack prepared in example 1 of the present invention.
FIG. 2 is a graph showing the corrosion resistance of the Tribaloy-based laser cladding layer and the TA15-2 titanium alloy in example 1 of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The TA15-2 titanium alloy substrate adopted in the following examples comprises the following chemical components in percentage by weight: 2.660% of Al, 1.100% of Mo, 1.320% of V, 1.660% of Zr, 0.090% of Fe, 0.080% of Si, 0.050% of C, 0.040% of N, 0.120% of O and the balance of Ti.
The TribaloyX40 adopted in the following examples comprises the following chemical components in percentage by weight: 0.850% of C, 25.000% of Cr, 0.300% of Si, 7.500% of W, 1.000% of Fe, 10.000% of Ni, 0.300% of Mn and the balance of Co.
Example 1
A method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding comprises the following steps:
(1) Taking TA15-2 titanium alloy as a base material, cutting the TA15-2 titanium alloy plate into a square body with the thickness of 10mm multiplied by 10mm by using linear cutting, polishing and flattening the surface of the base material by using No. 120, no. 400 and No. 600 abrasive paper, and cleaning the surface for 5-10 min by using acetone; then washing the TA15-2 titanium alloy base material with clear water, treating the surface to be melted with alcohol, and quickly drying;
(2) The following powder components (wt%) are weighed according to the following proportion: 55TribaloyX40, 23Cr,13Ni,7SiC,2Cu, the purity of each component is more than 99.5%, the powder components are mixed to form lower cladding layer mixed powder; the following powder components (wt%) are weighed according to the following proportions: 59TribaloyX40, 26Cr,14Ni and 1Cu, the purity of each component is more than 99.5 percent, and the powder components are mixed to form upper cladding layer mixed powder; wherein the grain diameter of Cr powder is 40-60 μm, the grain diameter of Ni powder is 40-60 μm, the grain diameter of SiC powder is 40-60 μm, the grain diameter of Cu powder is 150-250 μm, and the grain diameter of TribaloyX40 alloy powder is 40-60 μm; respectively drying the upper-layer cladding layer mixed powder and the lower-layer cladding layer mixed powder at 150 ℃ for 2h;
(3) Performing laser cladding on the surface of the TA15-2 titanium alloy base material by adopting an RFL-C3000 type fiber laser in a coaxial powder feeding mode to form a cladding layer;
adopting an RFL-C3000 type fiber laser to laser-clad the upper cladding layer mixed powder on the surface of the cladding layer in a coaxial powder feeding mode to prepare the corrosion-resistant laminated material with the Tribaloy-based laser cladding lamination;
the two layers of laser cladding are the same in process, and the processes are as follows: the laser power is 1100W, the scanning speed of the laser beam is 15mm/s, the diameter of a light spot is 3mm, the lapping rate is 30 percent, the powder feeding speed is 13g/min, meanwhile, argon with the purity of 99.9 percent is used as protective gas, and the flow rate is 30L/min.
Fig. 1 shows SEM images of the Tribaloy-based laser cladding stack prepared in this example, where a is a stack macroscopic image, b is a stack bonding area image, and c and d are stack central images.
Fig. 1a shows that Cr, co and Ni are uniformly distributed in a laser cladding lamination to form a Tribaloy-based lamination with a uniform and compact tissue structure, no obvious pores and cracks are generated, and part of ceramic precipitated phase is generated on a cladding lamination substrate; FIG. 1b shows that the TA15-2 substrate is melted by the high temperature of the laser and forms a bonding region with the cladding stack, and the cladding stack and the TA15-2 substrate are bonded well metallurgically; because the bottom of the cladding lamination has larger composition supercooling and temperature gradient, the crystal grains grow in a dendritic shape; crystal grains in the middle of the layer are changed from dendritic crystals to isometric crystals; FIG. 1c shows that equiaxed dendrites are formed in the middle of the layer, the white interdendritic structure is Ni-Ti phase, the interdendritic black region is Cr-rich phase, and part of SiC and TiC precipitated phases are dispersed in the cladding stack; as shown in fig. 1d, the bulk crystal and dendrite mutually inhibit growth to form a cladding stack with uniform and dense tissue.
FIG. 2 is a graph showing the corrosion resistance of the Tribaloy-based laser cladding layer prepared in the present embodiment with a TA15-2 titanium alloy. Wherein, a is a polarization curve diagram, and b is a Nyquist curve diagram.
FIG. 2a shows that the Tribaloy based laser cladding corrosion potential Ecorr is higher than that of the TA15-2 titanium alloy substrate, indicating that the Tribaloy based laser cladding has better corrosion resistance in a 3.5wt% NaCl solution, and the presence of a passivation region, showing superior corrosion resistance; fig. 2b shows that the Tribaloy-based laser cladding layer has a larger capacitive arc radius, and the surface impedance of the Tribaloy-based laser cladding layer is larger than that of the TA15-2 titanium alloy base material, so that the Tribaloy-based laser cladding layer has higher corrosion resistance.
Example 2
A method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding comprises the following steps:
(1) Taking TA15-2 titanium alloy as a base material, cutting the TA15-2 titanium alloy plate into a square body with the thickness of 10mm multiplied by 10mm by using linear cutting, polishing and flattening the surface of the base material by using No. 120, no. 400 and No. 600 abrasive paper, and cleaning the surface for 5-10 min by using acetone; then washing the TA15-2 titanium alloy base material with clear water, treating the surface to be melted with alcohol, and quickly drying;
(2) The following powder components (wt%) are weighed according to the following proportion: 55TribaloyX40, 23Cr,13Ni,7SiC,2Cu, the purity of each component is more than 99.5 percent, and the powder components are mixed to form lower cladding layer mixed powder; the following powder components (wt%) are weighed according to the following proportion: 59TribaloyX40, 26Cr,14Ni and 1Cu, wherein the purity of each component is more than 99.5 percent, and the powder components are mixed to form upper cladding layer mixed powder; wherein the grain diameter of Cr powder is 40-60 μm, the grain diameter of Ni powder is 40-60 μm, the grain diameter of SiC powder is 40-60 μm, the grain diameter of Cu powder is 150-250 μm, and the grain diameter of TribaloyX40 alloy powder is 40-60 μm; respectively drying the upper-layer cladding layer mixed powder and the lower-layer cladding layer mixed powder at 150 ℃ for 2h;
(3) Performing laser cladding on the surface of the TA15-2 titanium alloy base material by adopting an RFL-C3000 type fiber laser in a coaxial powder feeding mode to form a cladding layer;
adopting an RFL-C3000 type fiber laser to laser-clad the upper cladding layer mixed powder on the surface of the cladding layer in a coaxial powder feeding mode to prepare the corrosion-resistant laminated material with the Tribaloy-based laser cladding lamination;
the two layers of laser cladding are the same in process, and the processes are as follows: the laser power is 1000W, the scanning speed of the laser beam is 13mm/s, the diameter of a light spot is 2mm, the lapping rate is 20 percent, the powder feeding speed is 10g/min, meanwhile, argon with the purity of 99.9 percent is used as protective gas, and the flow rate is 30L/min.
Example 3
A method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding comprises the following steps:
(1) Taking TA15-2 titanium alloy as a base material, cutting the TA15-2 titanium alloy plate into a cube of 10mm multiplied by 10mm by using linear cutting, polishing and flattening the surface of the base material by using No. 120, no. 400 and No. 600 abrasive paper, and cleaning the surface for 5-10 min by using acetone; then washing the TA15-2 titanium alloy base material with clear water, treating the surface to be melted with alcohol, and quickly drying;
(2) The following powder components (wt%) are weighed according to the following proportion: 55TribaloyX40, 23Cr,13Ni,7SiC,2Cu, the purity of each component is more than 99.5 percent, and the powder components are mixed to form lower cladding layer mixed powder; the following powder components (wt%) are weighed according to the following proportion: 59TribaloyX40, 26Cr,14Ni and 1Cu, the purity of each component is more than 99.5 percent, and the powder components are mixed to form upper cladding layer mixed powder; wherein the grain diameter of Cr powder is 40-60 μm, the grain diameter of Ni powder is 40-60 μm, the grain diameter of SiC powder is 40-60 μm, the grain diameter of Cu powder is 150-250 μm, and the grain diameter of TribaloyX40 alloy powder is 40-60 μm; respectively drying the upper-layer cladding layer mixed powder and the lower-layer cladding layer mixed powder at 150 ℃ for 2h;
(3) Performing laser cladding on the lower-layer cladding layer mixed powder on the surface of the TA15-2 titanium alloy base material by adopting an RFL-C3000 type fiber laser in a coaxial powder feeding mode to form a cladding layer;
adopting an RFL-C3000 type fiber laser to laser-clad the upper cladding layer mixed powder on the surface of the cladding layer in a coaxial powder feeding mode to prepare the corrosion-resistant laminated material with the Tribaloy-based laser cladding lamination;
the two layers of laser cladding are the same in process, and the processes are as follows: the laser power is 1200W, the scanning speed of the laser beam is 17mm/s, the diameter of a light spot is 4mm, the lapping rate is 40 percent, the powder feeding speed is 15g/min, and meanwhile, argon with the purity of 99.9 percent is used as a protective gas, and the flow rate is 30L/min.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.
Claims (8)
1. A method for preparing a titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding is characterized by comprising the following steps:
s1, taking TA15-2 titanium alloy as a base material, and pretreating the surface of the base material;
s2, cladding TribaloyX40-Cr-Ni-SiC-Cu powder on the surface of the base material by laser in a coaxial powder feeding mode to form a cladding layer;
and S3, laser cladding TribaloyX40-Cr-Ni-Cu powder on the surface of the cladding layer by adopting a coaxial powder feeding mode, and forming a cladding lamination on the surface of the base material to obtain the corrosion-resistant laminated material.
2. The method for preparing the titanium alloy Tribaloy-based corrosion-resistant laminated material by laser cladding as claimed in claim 1, wherein in step S1, the surface of the substrate is pretreated by polishing the surface of the substrate with sand paper, cleaning the surface of the substrate with acetone, washing with clear water, and then treating with alcohol.
3. The method for preparing the Tribaloy-based corrosion-resistant laminated material through laser cladding as claimed in claim 1, wherein the TA15-2 titanium alloy comprises the following chemical components by weight percent: 2.660% of Al, 1.100% of Mo, 1.320% of V, 1.660% of Zr, 0.090% of Fe, 0.080% of Si, 0.050% of C, 0.040% of N, 0.120% of O and the balance of Ti.
4. The method for preparing the Tribaloy-based corrosion-resistant laminated titanium alloy material by laser cladding as claimed in claim 1, wherein in the step S2, the Tribaloy X40-Cr-Ni-SiC-Cu powder comprises the following powders in percentage by weight: tribaloyX 40%, cr 23%, ni 13%, siC 7% and Cu 2%; the purity of each powder is more than 99.5%.
5. The method for preparing the Tribaloy-based corrosion-resistant laminated material of the titanium alloy by laser cladding as claimed in claim 4, wherein the Tribaloy X40 powder has a particle size of 40-60 μm, the Cr powder has a particle size of 40-60 μm, the Ni powder has a particle size of 40-60 μm, the SiC powder has a particle size of 40-60 μm, and the Cu powder has a particle size of 150-250 μm.
6. The method for preparing the Tribaloy-based corrosion-resistant laminated titanium alloy material by laser cladding as claimed in claim 1, wherein in the step S3, the Tribaloy x40-Cr-Ni-Cu powder comprises the following powders in percentage by weight: tribaloyX4059%, cr 26%, ni 14% and Cu 1%; the purity of each powder is more than 99.5%.
7. The method for preparing the Tribaloy based corrosion-resistant laminated material of the titanium alloy by laser cladding as claimed in claim 4 or 6, wherein the Tribaloy X40 comprises the following chemical components by weight percent: 0.850% of C, 25.000% of Cr, 0.300% of Si, 7.500% of W, 1.000% of Fe, 10.000% of Ni, 0.300% of Mn and the balance of Co.
8. The method for preparing the Tribaloy-based corrosion-resistant laminated material of titanium alloy according to claim 1, wherein the laser cladding processes in step S2 and step S3 are both: the laser power is 1000-1200W, the laser beam scanning speed is 13-17 mm/s, the spot diameter is 2-4 mm, the lapping rate is 20-40%, the powder feeding speed is 10-15 g/min, argon with the purity of 99.9% is used as a protective gas, and the argon flow rate is 30L/min.
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| CN103628056A (en) * | 2013-12-09 | 2014-03-12 | 山东建筑大学 | Material for TA15 titanium alloy surface laser cladding and laser cladding method |
| CN111560611A (en) * | 2020-05-07 | 2020-08-21 | 上海交通大学 | Method for preparing transition layer of nickel-based coating on titanium alloy surface by laser cladding |
| CN113122840A (en) * | 2021-04-25 | 2021-07-16 | 中国海洋大学 | Tough wear-resistant strengthening layer and preparation method thereof |
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