CN116607143A - TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 Coating and preparation method thereof - Google Patents
TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 Coating and preparation method thereof Download PDFInfo
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- CN116607143A CN116607143A CN202310619922.XA CN202310619922A CN116607143A CN 116607143 A CN116607143 A CN 116607143A CN 202310619922 A CN202310619922 A CN 202310619922A CN 116607143 A CN116607143 A CN 116607143A
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- 238000000576 coating method Methods 0.000 title claims abstract description 49
- 239000011248 coating agent Substances 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 88
- 238000005253 cladding Methods 0.000 claims abstract description 42
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000004372 laser cladding Methods 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 229910052786 argon Inorganic materials 0.000 claims abstract description 15
- 239000011812 mixed powder Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000000889 atomisation Methods 0.000 claims abstract description 9
- 230000005496 eutectics Effects 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000012459 cleaning agent Substances 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 54
- 244000137852 Petrea volubilis Species 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 13
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- 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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- Materials Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a TiC reinforced AlCoCrFeNi on the surface of H13 steel 2.1 A coating and a preparation method thereof. The original Al, co, cr, fe, ni powder is obtained by a vacuum argon atomization method, and the coating powder comprises eutectic high-entropy alloy AlCoCrFeNi 2.1 Powder components of Al 7-17%, co 12-18%, cr 15-17%, fe 15-19%, and Ni in balance, and laser cladding AlCoCrFeNi 2.1 Powder and AlCoCrFeNi 2.1 In the mixed powder with TiC, the average particle size of the TiC particles is 5-45 mu m, alCoCrFeNi 2.1 The average grain size of the high-entropy alloy powder is 45-105 mu m. The preparation method comprises the steps of blanking the plate according to the size and shape, polishing the plate into a workpiece with the roughness not exceeding 12, cleaning the workpiece with a cleaning agent, and drying the workpiece. Evenly mixing for 5 hours by a powder mixer to form AlCoCrFeNi 2.1 Mixing with TiC. Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 And TiC. The invention has the advantages that: the powder is uniformly distributed on the surface of the matrix, the bonding strength between the coating and the matrix is improved, and the hardness and the wear resistance of the formed cladding layer are improved and the toughness is also improved by adjusting the TiC content of the additive.
Description
Technical Field
The invention relates to the technical field of laser cladding, in particular to an H13 steel surface TiC reinforced AlCoCrFeNi 2.1 A coating and a preparation method thereof.
Background
The laser cladding is an advanced surface modification technology, which is a technology for melting a surface thin layer of a metal base material and a substrate added on the surface by utilizing a high-energy laser beam to form a coating which has special functions and low dilution rate and is combined with the substrate into metallurgical bonding, so that excellent performances such as wear resistance, corrosion resistance, oxidation resistance, high temperature resistance and the like are obtained on the surface of a metal workpiece. The laser cladding can prepare a high-performance coating on a low-cost material, so that the energy consumption can be reduced, and the cost can be saved. The laser cladding forms metallurgical bonding, and has the following remarkable characteristics compared with the conventional surface coating strengthening process:
the cladding layer has typical rapid solidification characteristics such as compact structure, grain refinement and the like;
2, the heat input and distortion are small, and the dilution rate of the coating is low;
3, selective zone cladding can be performed, the material consumption is low, and the cost performance is excellent;
fourthly, the laser beam can aim at the inaccessible area for cladding;
and 5, the process is easy to realize automation.
In recent years, with the rapid development of material science, computer technology and numerical control technology, the advantages and characteristics of laser cladding enable the technology to have great application potential in parts repair, gradient functional material preparation, three-dimensional printing direct forming of parts and the like.
H13 steel is a hot work die steel material commonly used in the industry at present, has better comprehensive performance, but needs more excellent high hardness, wear resistance, high temperature resistance and other performances in some special service environments, and can be improved by adopting a laser cladding surface modification method to solve the problem and simultaneously consider economyTissue structure of the surface. The high-entropy alloy cladding powder with FCC and BCC phases is a research hot spot in the technical field of laser cladding at present, and researchers at the university of Emerst division and George sub-technology university of Massachusetts, USA print AlCoCrFeNi by using L-PBF 2.1 The two-phase nano lamellar high-entropy alloy is obtained and breaks through the paper published in the journal of Nature. TiC has the characteristics of high hardness, high modulus, high melting point, thermodynamic stability and the like, and is widely used as a ceramic reinforcing phase of composite materials.
Therefore, alCoCrFeNi is prepared on the surface of H13 steel by using the laser cladding technology 2.1 Eutectic high-entropy alloy coating, wherein TiC content with different mass fractions is added to AlCoCrFeNi 2.1 The coating makes the powder uniformly distributed on the surface of the matrix, improves the bonding strength between the coating and the matrix, and improves the hardness and the wear resistance of the formed cladding layer and simultaneously has toughness by adjusting the TiC content of the additive.
Disclosure of Invention
In order to solve the technical defects, the invention provides the following technical scheme:
the invention discloses an AlCoCrFeNi reinforced by TiC on the surface of H13 steel 2.1 The coating and the preparation method thereof comprise the following steps:
1) And (3) blanking: firstly, blanking a base material according to the size of 100mm multiplied by 50 mm;
2) Polishing and cleaning: grinding the base material into a rough structure not higher than 12, then cleaning metal powder generated by grinding on the base material, cleaning greasy dirt on the base material by a cleaning agent, and drying for later use;
3) Polishing the surfaces of the materials by using 400# sand paper, 600# sand paper and 800# sand paper before the experiment, and then cleaning the materials by using alcohol and acetone solution and drying the materials;
4) The cladding material is AlCoCrFeNi 2.1 A mixed powder of alloy powder and TiC particles. The original Al, co, cr, fe, ni powder was obtained by vacuum argon atomization;
5) Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 Mixing with TiC.
According to some embodiments of the invention, al, co, cr, fe, ni is spherical powder with purity not less than 95%, elemental powder particle size of 45-120 μm, and the coating powder comprises eutectic high entropy alloy AlCoCrFeNi 2.1 Powder components of Al 7-17%, co 12-18%, cr 15-17%, fe 15-19%, and Ni in balance, and laser cladding AlCoCrFeNi 2.1 Powder and AlCoCrFeNi 2.1 And in the TiC mixed powder, the average particle size of TiC particles is 5-45 mu m.
According to some embodiments of the invention, the alloy powder formula is improved, tiC is added and the proportion is adjusted, the mass fractions of TiC particles in the mixed powder are respectively 0%, 3%, 6% and 9%, and the formed cladding layer is improved in hardness.
According to some embodiments of the invention, a cladding robot is adopted as the laser, the diameter of a light spot is phi 3mm, the powder feeding speed is 10g/min, the lap joint rate is 33%, and the laser cladding is carried out by coaxially feeding the powder, taking high-purity argon as shielding gas, and the flow of the shielding gas is 15L/min. The laser power is 1200W, the scanning speed is 6mm/s, the single-layer laser cladding is carried out, and the cladding thickness is about 0.8mm.
According to some embodiments of the invention, the H13 steel substrate is subjected to surface polishing, cleaning and blow-drying treatment before cladding, so that the bonding stability of the cladding layer on the substrate is improved.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses the biphase high-entropy alloy AlCoCrFeNi 2.1 The powder is matched with a small amount of TiC hard phase, the original Al, co, cr, fe, ni spherical powder is obtained through vacuum argon atomization, the purity is more than or equal to 95%, the granularity of the obtained element powder is 45-120 mu m, the mass fractions of TiC are respectively 0%, 3%, 6% and 9%, and the powder is prepared into the powder by vacuum argon atomization 2.1 The coating makes the powder uniformly distributed on the surface of the matrix, improves the bonding strength between the coating and the matrix, and improves the hardness and the wear resistance of the formed cladding layer and simultaneously has toughness by adjusting the TiC content of the additive.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a diagram of OM in one to four embodiments of the present invention;
FIG. 2 is a graph of microhardness in one to four embodiments of the present invention;
FIG. 3 is a graph showing the friction coefficient of the first to fourth embodiments of the present invention;
FIG. 4 is a graph of wear mass loss for one to four embodiments of the present invention;
FIG. 5 is a graph of wear microstructure for first and fourth embodiments of the present invention;
reference numerals:
FIG. 1 (a) embodiment one; (b) embodiment two; (c) example three; (d) example four;
FIGS. 5 (a), (b) embodiment one; (c), (d) example four.
Description of the embodiments
The invention is further illustrated by the following examples.
Examples
TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 The coating and the preparation method thereof comprise the following steps:
1) And (3) blanking: firstly, blanking a base material according to the size of 100mm multiplied by 50 mm;
2) Polishing and cleaning: grinding the base material into a rough structure not higher than 12, then cleaning metal powder generated by grinding on the base material, cleaning greasy dirt on the base material by a cleaning agent, and drying for later use;
3) Polishing the surfaces of the materials by using 400# sand paper, 600# sand paper and 800# sand paper before the experiment, and then cleaning the materials by using alcohol and acetone solution and drying the materials;
4) The cladding material is AlCoCrFeNi 2.1 A mixed powder of alloy powder and TiC particles. The original Al, co, cr, fe, ni powder was obtained by vacuum argon atomization;
5) Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 Mixing with TiC.
The coating powder comprises eutectic high-entropy alloy AlCoCrFeNi 2.1 Al, co, cr, fe, ni is spherical powder with purity not less than 95%, elemental powder particle size of 45-120 μm, and powder componentsMass fraction of Al3.19%, co13.93%, cr13.87%, fe13.20%, ni55.81%, laser cladding AlCoCrFeNi 2.1 Powder and AlCoCrFeNi 2.1 And in the TiC mixed powder, the average particle size of TiC particles is 5-45 mu m.
The cladding powder AlCoCrFeNi 2.1 TiC is not added.
The laser adopts a cladding robot, the diameter of a light spot is phi 3mm, the powder feeding speed is 10g/min, the lap joint rate is 33%, and the laser cladding is carried out by coaxially feeding the powder and taking high-purity argon as protective gas, wherein the flow rate of the protective gas is 15L/min. The laser power is 1200W, the scanning speed is 6mm/s, the single-layer laser cladding is carried out, and the cladding thickness is about 0.8mm.
Examples
TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 The coating and the preparation method thereof comprise the following steps:
1) And (3) blanking: firstly, blanking a base material according to the size of 100mm multiplied by 50 mm;
2) Polishing and cleaning: grinding the base material into a rough structure not higher than 12, then cleaning metal powder generated by grinding on the base material, cleaning greasy dirt on the base material by a cleaning agent, and drying for later use;
3) Polishing the surfaces of the materials by using 400# sand paper, 600# sand paper and 800# sand paper before the experiment, and then cleaning the materials by using alcohol and acetone solution and drying the materials;
4) The cladding material is AlCoCrFeNi 2.1 A mixed powder of alloy powder and TiC particles. The original Al, co, cr, fe, ni powder was obtained by vacuum argon atomization;
5) Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 Mixing with TiC.
The coating powder comprises eutectic high-entropy alloy AlCoCrFeNi 2.1 Al, co, cr, fe, ni is spherical powder with the purity more than or equal to 95%, the granularity of the element powder is 45-120 mu m, the mass fraction of the powder components is Al3.10%, co13.53%, cr13.48%, fe12.82%, ni54.17% and TiC2.9% of AlCoCrFeNi by laser cladding 2.1 Powder and AlCoCrFeNi 2.1 In the mixed powder with TiC, the TiC particlesThe average particle size of the particles is 5-45 μm.
The laser adopts a cladding robot, the diameter of a light spot is phi 3mm, the powder feeding speed is 10g/min, the lap joint rate is 33%, and the laser cladding is carried out by coaxially feeding the powder and taking high-purity argon as protective gas, wherein the flow rate of the protective gas is 15L/min. The laser power is 1200W, the scanning speed is 6mm/s, the single-layer laser cladding is carried out, and the cladding thickness is about 0.8mm.
Examples
TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 The coating and the preparation method thereof comprise the following steps:
1) And (3) blanking: firstly, blanking a base material according to the size of 100mm multiplied by 50 mm;
2) Polishing and cleaning: grinding the base material into a rough structure not higher than 12, then cleaning metal powder generated by grinding on the base material, cleaning greasy dirt on the base material by a cleaning agent, and drying for later use;
3) Polishing the surfaces of the materials by using 400# sand paper, 600# sand paper and 800# sand paper before the experiment, and then cleaning the materials by using alcohol and acetone solution and drying the materials;
4) The cladding material is AlCoCrFeNi 2.1 A mixed powder of alloy powder and TiC particles. The original Al, co, cr, fe, ni powder was obtained by vacuum argon atomization;
5) Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 Mixing with TiC.
The coating powder comprises eutectic high-entropy alloy AlCoCrFeNi 2.1 Al, co, cr, fe, ni is spherical powder with the purity more than or equal to 95%, the granularity of the element powder is 45-120 mu m, the mass fraction of the powder components is Al3.01%, co13.13%, cr13.08%, fe12.45%, ni52.63% and TiC5.7% of AlCoCrFeNi by laser cladding 2.1 Powder and AlCoCrFeNi 2.1 And in the TiC mixed powder, the average particle size of TiC particles is 5-45 mu m.
The laser adopts a cladding robot, the diameter of a light spot is phi 3mm, the powder feeding speed is 10g/min, the lap joint rate is 33%, and the laser cladding is carried out by coaxially feeding the powder and taking high-purity argon as protective gas, wherein the flow rate of the protective gas is 15L/min. The laser power is 1200W, the scanning speed is 6mm/s, the single-layer laser cladding is carried out, and the cladding thickness is about 0.8mm.
Examples
TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 The coating and the preparation method thereof comprise the following steps:
1) And (3) blanking: firstly, blanking a base material according to the size of 100mm multiplied by 50 mm;
2) Polishing and cleaning: grinding the base material into a rough structure not higher than 12, then cleaning metal powder generated by grinding on the base material, cleaning greasy dirt on the base material by a cleaning agent, and drying for later use;
3) Polishing the surfaces of the materials by using 400# sand paper, 600# sand paper and 800# sand paper before the experiment, and then cleaning the materials by using alcohol and acetone solution and drying the materials;
4) The cladding material is AlCoCrFeNi 2.1 A mixed powder of alloy powder and TiC particles. The original Al, co, cr, fe, ni powder was obtained by vacuum argon atomization;
5) Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 Mixing with TiC.
The coating powder comprises eutectic high-entropy alloy AlCoCrFeNi 2.1 Al, co, cr, fe, ni is spherical powder with the purity more than or equal to 95%, the granularity of the element powder is 45-120 mu m, the mass fraction of the powder components is Al2.92%, co12.74%, cr12.68%, fe12.07%, ni50.99% and TiC8.6% of AlCoCrFeNi by laser cladding 2.1 Powder and AlCoCrFeNi 2.1 And in the TiC mixed powder, the average particle size of TiC particles is 5-45 mu m.
The laser adopts a cladding robot, the diameter of a light spot is phi 3mm, the powder feeding speed is 10g/min, the lap joint rate is 33%, and the laser cladding is carried out by coaxially feeding the powder and taking high-purity argon as protective gas, wherein the flow rate of the protective gas is 15L/min. The laser power is 1200W, the scanning speed is 6mm/s, the single-layer laser cladding is carried out, and the cladding thickness is about 0.8mm.
Fig. 1 shows that, by analyzing the structure of the cladding layer by a scanning electron microscope: in the example, the lower layer of the cladding layer is blocky crystal, the middle layer and the surface layer are dendritic crystal and equiaxed crystal, and the elements such as part C, ti and TiC are combined in the cladding layer to form a hard phase, so that the grain refinement can be promoted, and the hardness can be improved.
FIG. 2 shows microhardness curves for TiC coatings of different contents. It can be seen that the average hardness of the H13 steel matrix material is only 260HV 0.5 Cladding AlCoCrFeNi 2.1 The coating hardness of the powder is obviously improved compared with the matrix, and the average hardness is improved to 430HV 0.5 . The average hardness of the TiC coating without adding is 400HV 0.5 153.8% higher than the matrix; the highest hardness of the coating added with 5.7wt% TiC reaches 450HV 0.5 With an average hardness of 425HV 0.5 163.5% higher than the average hardness of the matrix and 2.4% higher than the 2.9wt% TiC coating
FIG. 3 shows the friction coefficient curve of each coating with an average friction coefficient of 3.6 for matrix H13 steel, alCoCrFeNi 2.1 The coefficient of friction of the coating is 0.8, so that the coating plays a good role in lubrication probably because of more FCC phases in the eutectic high-entropy alloy, and the average coefficient of friction of the 2.9wt% TiC coating is 1.1, which is reduced compared with a matrix.
FIG. 4 shows the wear mass loss of H13 steel and each coating, and it can be seen that the wear amount decreases with increasing TiC content, with 0.0107g being the largest wear amount of H13 steel and 0.0007g being the smallest wear amount of 8.6wt% TiC sample.
As can be seen from fig. 5, the hardness of the cladding layer in the example is greatly improved compared with that of the H13 steel matrix, and the hardness of the high-entropy alloy coating added with TiC is also improved compared with that of the coating not added with TiC.
The mass percentages (wt%) of the powder components of the above examples are shown in Table 1, below
TABLE 1 alloy powder composition mass percent (wt%)
| x | Al | Co | Cr | Fe | Ni | |
| Example one | 0 | 3.19 | 13.93 | 13.87 | 13.20 | 55.81 |
| Example two | 2.9 | 3.10 | 13.53 | 13.48 | 12.82 | 54.17 |
| Example three | 5.7 | 3.01 | 13.13 | 13.08 | 12.45 | 52.63 |
| Example four | 8.6 | 2.92 | 12.74 | 12.68 | 12.07 | 50.99 |
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (4)
1. TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 The coating and the preparation method thereof are characterized by comprising the following steps:
1) And (3) blanking: firstly, blanking a base material according to the size of 100mm multiplied by 50 mm;
2) Polishing and cleaning: grinding the base material into a rough structure not higher than 12, then cleaning metal powder generated by grinding on the base material, cleaning greasy dirt on the base material by a cleaning agent, and drying for later use;
3) Polishing the surfaces of the materials by using 400# sand paper, 600# sand paper and 800# sand paper before the experiment, and then cleaning the materials by using alcohol and acetone solution and drying the materials;
4) The cladding material is AlCoCrFeNi 2.1 A mixed powder of alloy powder and TiC particles. The original Al, co, cr, fe, ni powder was obtained by vacuum argon atomization;
5) Selecting processing parameters according to conditions, and cladding a coating AlCoCrFeNi on the surface of the substrate by using a coaxial powder feeding laser 2.1 Mixing with TiC.
2. An H13 steel surface TiC reinforced AlCoCrFeNi as claimed in claim 1 2.1 Coating and preparation method thereofThe method is characterized in that: al, co, cr, fe, ni is spherical powder with purity more than or equal to 95%, granularity of element powder is 45-120 μm, and the coating powder comprises eutectic high-entropy alloy AlCoCrFeNi 2.1 Powder components of Al 7-17%, co 12-18%, cr 15-17%, fe 15-19%, and Ni in balance, and laser cladding AlCoCrFeNi 2.1 Powder and AlCoCrFeNi 2.1 And in the TiC mixed powder, the average particle size of TiC particles is 5-45 mu m.
3. An H13 steel surface TiC reinforced AlCoCrFeNi as claimed in claim 1 2.1 The coating and the preparation method thereof are characterized in that: mixing the cladding powder according to a certain proportion, wherein the mass fractions of TiC particles in the mixed powder are respectively 0%, 3%, 6% and 9%, grinding for 4-5h by using a powder mixer, and drying for 2h in a dryer at 150 ℃.
4. An H13 steel surface TiC reinforced AlCoCrFeNi as claimed in claim 1 2.1 The coating and the preparation method thereof are characterized in that: the laser adopts a cladding robot, the diameter of a light spot is phi 3mm, the powder feeding speed is 10g/min, the lap joint rate is 33%, and the laser cladding is carried out by coaxially feeding the powder and taking high-purity argon as protective gas, wherein the flow rate of the protective gas is 15L/min. The laser power is 1200W, the scanning speed is 6mm/s, the single-layer laser cladding is carried out, and the cladding thickness is about 0.8mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310619922.XA CN116607143A (en) | 2023-05-30 | 2023-05-30 | TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 Coating and preparation method thereof |
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|---|---|---|---|
| CN202310619922.XA CN116607143A (en) | 2023-05-30 | 2023-05-30 | TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 Coating and preparation method thereof |
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| CN202310619922.XA Pending CN116607143A (en) | 2023-05-30 | 2023-05-30 | TiC reinforced AlCoCrFeNi on surface of H13 steel 2.1 Coating and preparation method thereof |
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