CN113832458A - Laser cladding method for inhibiting cracking of FeCoCrNiMnAl high-entropy alloy cladding layer - Google Patents
Laser cladding method for inhibiting cracking of FeCoCrNiMnAl high-entropy alloy cladding layer Download PDFInfo
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- CN113832458A CN113832458A CN202010581112.6A CN202010581112A CN113832458A CN 113832458 A CN113832458 A CN 113832458A CN 202010581112 A CN202010581112 A CN 202010581112A CN 113832458 A CN113832458 A CN 113832458A
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- 238000005253 cladding Methods 0.000 title claims abstract description 56
- 238000004372 laser cladding Methods 0.000 title claims abstract description 42
- 239000000956 alloy Substances 0.000 title claims abstract description 41
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005336 cracking Methods 0.000 title claims abstract description 22
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000003466 welding Methods 0.000 claims abstract description 66
- 229910052786 argon Inorganic materials 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 27
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 26
- 239000010937 tungsten Substances 0.000 claims description 26
- 230000008021 deposition Effects 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 150000003657 tungsten Chemical class 0.000 description 1
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a laser cladding method for inhibiting FeCoCrNiMnAl high-entropy alloy cladding layer from cracking, wherein a TIG welding gun and a laser cladding nozzle are fixed in the same horizontal plane, TIG welding is arranged before laser cladding along a walking direction, the TIG welding and the laser nozzle are connected and are vertical to the surface of a workpiece, and shielding gas of the TIG welding gun and the laser cladding adopts one of nitrogen and argon. The method solves the problem of cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer, effectively reduces the residual stress of the cladding layer, inhibits the generation of cracks of the cladding layer, improves the product quality, and has the advantages of environment-friendly process and lower production cost.
Description
Technical Field
The invention belongs to the technical field of high-entropy alloy, and particularly relates to a laser cladding method for inhibiting cracking of a FeCoCrNiMnAl high-entropy alloy cladding layer.
Background
Currently, high entropy alloy blocks are mainly prepared by an arc melting method. However, the added elements (such as Cr, Ni, Co, W, Mo, Ti, etc.) are expensive, the cost is higher than that of most traditional alloys, and the prepared sample has limited size. The laser cladding technology is a surface preparation technology and has the characteristics of high efficiency, strong flexibility and the like. The material layer meeting the special performance requirements can be prepared on the surface of the traditional material, so that the production cost can be effectively reduced, and the size limitation can be overcome. Therefore, laser cladding techniques are increasingly used to manufacture high entropy alloys.
Since laser cladding is a rapid cooling and heating process, a large temperature gradient exists between the substrate and the cladding layer. In addition, the physical properties of the base body and the cladding layer material, such as thermal expansion coefficient, elastic modulus and the like, are different, so that large residual stress occurs in the cladding layer, and when the residual tensile stress is greater than the tensile strength of the material, cracks can occur on the surface and in the cladding layer. The traditional heat treatment and single gradient cladding method can reduce the generation of cracks to a certain extent, but has the problems of environmental pollution, high production cost and the like, and other methods are still needed to be found to more effectively inhibit the generation of cracks. Therefore, a laser cladding method which can effectively inhibit the FeCoCrNiMnAl high-entropy alloy cladding layer from generating cracks and is more environment-friendly and lower in production cost is urgently needed to be developed.
Non-consumable electrode gas shielded welding (TIG or GTAW for short), also called argon tungsten-arc welding or inert gas tungsten welding, is a gas shielded welding method using pure tungsten or activated tungsten electrode and inert gas-argon as shielding gas, the tungsten electrode only has the function of conducting electricity but does not melt, after being electrified, electric arc is generated between the tungsten electrode and workpiece. The wire may or may not be filled during the welding process. Under the condition of no wire filling, the heat source can be effectively provided.
Disclosure of Invention
The invention aims to overcome the defects that a FeCoCrNiMnAl high-entropy alloy cladding layer generates cracks, the process is not environment-friendly and the production cost is high in the prior art, and provides a laser cladding method for inhibiting the FeCoCrNiMnAl high-entropy alloy cladding layer from cracking.
The technical purpose of the invention is realized by the following technical scheme.
A laser cladding method for inhibiting cracking of a FeCoCrNiMnAl high-entropy alloy cladding layer uses a tungsten electrode argon arc welding gun to provide a pretreatment heat source; the argon tungsten-arc welding gun is arranged in front of the laser deposition nozzle along the traveling direction; the argon tungsten-arc welding gun and the laser deposition nozzle are respectively vertical to the surface of the workpiece, and the argon tungsten-arc welding gun and the laser deposition nozzle are fixed in the same vertical plane vertical to the surface of the workpiece, so that laser spots of a tungsten electrode of the argon tungsten-arc welding gun and laser deposition nozzle are respectively vertical to the surface of the workpiece; the projection of the tungsten electrode of the argon tungsten-arc welding gun on the surface of the workpiece and the projection of the laser spot center of the laser deposition nozzle on the surface of the workpiece are kept on the same horizontal line; so that the argon tungsten-arc welding gun arcs along the welding seam direction first and carries out pretreatment preheating, when the argon tungsten-arc welding seam is not completely solidified, the laser spot reaches the position where the argon tungsten-arc welding arc is started and preheated before, and the capping laser cladding is carried out, the preheating of the argon tungsten-arc welding is utilized to restrain the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer at the same cladding layer position, so as to obtain the crack-free high-entropy alloy cladding layer, wherein: the tungsten electrode of the argon tungsten-arc welding gun extends out of the front end of the welding gun, the horizontal distance between the projection of the tungsten electrode of the argon tungsten-arc welding gun on the surface of the workpiece and the projection of the center of a laser spot of the laser deposition nozzle on the surface of the workpiece is 20-70 mm, and the preferred horizontal distance is 40-60 mm; the diameter of a tungsten electrode of the argon tungsten-arc welding gun is 1-3 mm, and the extension end of the tungsten electrode of the argon tungsten-arc welding gun is 2-6 mm; the diameter of the laser spot of the laser welding nozzle is 1-4 mm.
And moreover, the argon tungsten-arc welding gun and the protective gas for laser cladding adopt one of nitrogen and argon, and the airflow of the protective gas is 20-25L/min.
And the traveling speeds of the argon tungsten-arc welding gun and the laser deposition nozzle are both 3-8 mm/s, preferably 5-8 mm/s.
Moreover, the current of the argon tungsten-arc welding gun is 10-100A, preferably 30-60A; the alternating current frequency of the argon tungsten-arc welding gun is 50-70 Hz.
Moreover, the laser cladding power is 1200-1800W, preferably 1300-1600W; the powder spraying amount is 10-15L/min, preferably 12-15L/min.
Furthermore, H13 hot work die steel was used as the base workpiece.
The particle size of the high-entropy alloy powder is 15-53 mu m. The entropy alloy powder is FeCoCrNiMnAl six-component high-entropy alloy powder, the mole ratios of Fe, Co, Cr, Mn, Ni and Al are equal, namely the mole numbers of the six metal elements are consistent, and the thickness of a cladding layer is 1-3 mm.
In the technical scheme of this application, for reducing cladding layer residual stress, restrain the cladding layer crackle and produce, improve product quality, adopt and weld the preliminary treatment mode of preheating treatment at argon tungsten-arc, effectively reduce the residual stress of cladding layer. The preheating in the pretreatment is used for preheating in a tungsten electrode argon arc welding mode so as to reduce the temperature gradient between the substrate and the cladding layer in the laser cladding process and inhibit the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer. Therefore, the laser cladding method can effectively inhibit the FeCoCrNiMnAl high-entropy alloy cladding layer from generating cracks, and has the advantages of high product quality, more environmental protection and lower production cost.
Compared with the prior art, the laser cladding method disclosed by the invention has the advantages that in the pretreatment, a TIG (tungsten inert gas) treatment mode is adopted, the residual stress of the cladding layer is effectively reduced, the generation of cracks of the cladding layer is inhibited, the product quality is improved, the process is environment-friendly, and the production cost is lower. The average hardness of the prepared cladding layer can reach 560-570 HV, and the residual stress of the cladding layer can be reduced by 10% -60%.
Drawings
FIG. 1 is a schematic view of a cladding layer prepared by the laser cladding method of the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments. The raw materials in the examples are all commercially available; reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Example 1
A laser cladding method for inhibiting a cladding layer from cracking comprises the following steps:
the tungsten electrode of the argon tungsten-arc welding gun extends out of the front end of the welding gun, wherein the horizontal distance between the projection of the tungsten electrode of the argon tungsten-arc welding gun on the surface of the workpiece and the projection of the center of a laser spot of the laser deposition nozzle on the surface of the workpiece is 30 mm; the diameter of a tungsten electrode of the argon tungsten-arc welding gun is 2mm, and the extension end of the tungsten electrode of the argon tungsten-arc welding gun is 5 mm;
the diameter of a laser spot of the laser cladding nozzle is 2 mm;
and the argon tungsten-arc welding gun and the laser cladding shielding gas adopt one of nitrogen and argon, and the flow of the shielding gas selects 20L/min.
The current of the argon tungsten-arc welding gun is 50A, the alternating current frequency of the argon tungsten-arc welding gun is 60Hz, and the traveling speeds of the argon tungsten-arc welding gun and the laser deposition nozzle are both 5 mm/s.
The laser cladding power is 1400w, and the powder spraying amount is 13L/min.
H13 hot work die steel is used as a base workpiece.
The particle size of the high-entropy alloy powder is 40 mu m. The high-entropy alloy powder is FeCoCrNiMnAl six-component high-entropy alloy powder. The molar ratios of Fe, Co, Cr, Mn, Ni and Al are equal, namely the molar numbers of the six metal elements are consistent. The cladding layer thickness of this example was 2 mm.
The experimental results are as follows: after x-ray flaw detection experiments, the clad layer obtained in example 1 was found to have no cracks on the surface. The average hardness of the obtained cladding layer was 565 HV. An indentation strain method is adopted to measure the residual compressive stress on the surface, according to the national standard GB/T24179-2009, a spherical distributed hard alloy pressure head with the diameter of 2.5mm is used as a pressure ball, an XL2101B5 static strain measuring instrument is used, a strain gage with the model of BFI20-1.5CF is used, the resistance value is 120 +/-0.2 omega, and the sensitivity coefficient is 2.08 +/-1%. The residual stress of the surface of the cladding layer measured at a load force P of 2000N was a compressive stress (-112.7mpa)
Example 2
The present embodiment is a second embodiment of the laser cladding method of the present invention, and is different from embodiment 1 in that the current of the argon tungsten-arc welding torch is 80A, the ac frequency of the argon tungsten-arc welding torch is 70Hz, the laser cladding power is 1800w, and the powder spraying amount is 15L/min.
The other steps are the same as in example 1. The thickness of the cladding layer of this example is 3 mm.
The experimental results are as follows: the surface of the cladding layer obtained in example 2 was found to be free of cracks after x-ray flaw detection experiments. The average hardness of the prepared cladding layer is 562 HV. An indentation strain method is adopted to measure the residual compressive stress on the surface, according to the national standard GB/T24179-2009, a spherical distributed hard alloy pressure head with the diameter of 2.5mm is used as a pressure ball, an XL2101B5 static strain measuring instrument is used, a strain gage with the model of BFI20-1.5CF is used, the resistance value is 120 +/-0.2 omega, and the sensitivity coefficient is 2.08 +/-1%. The residual stress of the surface of the cladding layer was measured as compressive stress (-256.7mpa) at a load force P of 2000N.
Example 3
Different from the embodiment 1, the current of the argon tungsten-arc welding gun is 30A, the alternating current frequency of the argon tungsten-arc welding gun is 50Hz, the laser cladding power is 1200w, and the powder spraying amount is 10L/min.
The other steps are the same as in example 1. The thickness of the cladding layer of the embodiment is 1 mm;
the experimental results are as follows: after x-ray flaw detection experiments, the clad layer obtained in example 3 was found to have no cracks on the surface. The average hardness of the prepared cladding layer is 571 HV. An indentation strain method is adopted to measure the residual compressive stress on the surface, according to the national standard GB/T24179-2009, a spherical distributed hard alloy pressure head with the diameter of 2.5mm is used as a pressure ball, an XL2101B5 static strain measuring instrument is used, a strain gage with the model of BFI20-1.5CF is used, the resistance value is 120 +/-0.2 omega, and the sensitivity coefficient is 2.08 +/-1%. The residual stress of the surface of the cladding layer was measured as compressive stress (-149mpa) at a load force P of 2000N.
According to the invention, the adjustment of the process parameters can realize the laser cladding aiming at the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer, and realize the inhibition of cracking and the improvement of hardness and residual stress. The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which may occur to those skilled in the art without departing from the spirit and the scope of the invention may be resorted to without departing from the scope of the invention.
Claims (9)
1. A laser cladding method for inhibiting FeCoCrNiMnAl high entropy alloy cladding layer from cracking is characterized in that a tungsten electrode argon arc welding gun is used for providing a pretreatment heat source; the argon tungsten-arc welding gun is arranged in front of the laser deposition nozzle along the traveling direction; the argon tungsten-arc welding gun and the laser deposition nozzle are respectively vertical to the surface of the workpiece, and the argon tungsten-arc welding gun and the laser deposition nozzle are fixed in the same vertical plane vertical to the surface of the workpiece, so that laser spots of a tungsten electrode of the argon tungsten-arc welding gun and laser deposition nozzle are respectively vertical to the surface of the workpiece; the projection of the tungsten electrode of the argon tungsten-arc welding gun on the surface of the workpiece and the projection of the laser spot center of the laser deposition nozzle on the surface of the workpiece are kept on the same horizontal line; so that the argon tungsten-arc welding gun arcs along the welding seam direction first and carries out pretreatment preheating, when the argon tungsten-arc welding seam is not completely solidified, the laser spot reaches the position where the argon tungsten-arc welding arc is started and preheated before, and the capping laser cladding is carried out, the preheating of the argon tungsten-arc welding is utilized to restrain the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer at the same cladding layer position, so as to obtain the crack-free high-entropy alloy cladding layer, wherein: the tungsten electrode of the argon tungsten-arc welding gun extends out of the front end of the welding gun, the projection of the tungsten electrode of the argon tungsten-arc welding gun on the surface of the workpiece and the projection of the center of a laser spot of the laser deposition nozzle on the surface of the workpiece are horizontally spaced by 20-70 mm; the diameter of a tungsten electrode of the argon tungsten-arc welding gun is 1-3 mm, and the extension end of the tungsten electrode of the argon tungsten-arc welding gun is 2-6 mm; the diameter of the laser spot of the laser welding nozzle is 1-4 mm.
2. The laser cladding method for inhibiting FeCoCrNiMnAl high-entropy alloy cladding layer from cracking is characterized in that the horizontal distance between the projection of a tungsten electrode of an argon tungsten-arc welding gun on the surface of a workpiece and the projection of the center of a laser spot of a laser cladding nozzle on the surface of the workpiece is 40-60 mm.
3. The laser cladding method for inhibiting the FeCoCrNiMnAl high-entropy alloy cladding layer from cracking is characterized in that one of nitrogen and argon is adopted as shielding gas for tungsten argon arc welding gun and laser cladding, and the flow of the shielding gas is selected from 20-25L/min.
4. The laser cladding method for inhibiting FeCoCrNiMnAl high-entropy alloy cladding layer from cracking is characterized in that the traveling speeds of an argon tungsten-arc welding gun and a laser cladding nozzle are both 3-8 mm/s, preferably 5-8 mm/s.
5. The laser cladding method for inhibiting the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer according to the claim 1, characterized in that the current of a tungsten electrode argon arc welding gun is 10-100A, preferably 30-60A; the alternating current frequency of the argon tungsten-arc welding gun is 50-70 Hz.
6. The laser cladding method for inhibiting the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer according to the claim 1, characterized in that the laser cladding power is 1200-1800W, preferably 1300-1600W; the powder spraying amount is 10-15L/min, preferably 12-15L/min.
7. The laser cladding method for inhibiting the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer according to claim 1, characterized in that H13 hot-work die steel is adopted as a base workpiece.
8. The laser cladding method for inhibiting the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer as claimed in claim 1, wherein the entropy alloy powder is FeCoCrNiMnAl six-component high-entropy alloy powder, and the molar ratios of Fe, Co, Cr, Mn, Ni and Al are equal, i.e. the molar numbers of the six metal elements are the same.
9. The laser cladding method for inhibiting the cracking of the FeCoCrNiMnAl high-entropy alloy cladding layer according to claim 1, wherein the particle size of the high-entropy alloy powder is 15-53 μm, and the thickness of the cladding layer is 1-3 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415646A (en) * | 2022-09-06 | 2022-12-02 | 上海工程技术大学 | Preparation method of medium-entropy/high-entropy alloy cladding layer |
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| CN104842048A (en) * | 2015-05-14 | 2015-08-19 | 天津大学 | Argon tungsten-arc welding and cold metal transition welding composite heat source welding device and method and application |
| CN105414764A (en) * | 2015-12-30 | 2016-03-23 | 哈尔滨工业大学 | TIG (tungsten inert gas welding) arc synchronous preheating assisted connection method based on laser additive manufacturing |
| CN110804711A (en) * | 2018-08-06 | 2020-02-18 | 天津大学 | High-entropy alloy powder and preparation method and application of laser cladding layer |
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- 2020-06-23 CN CN202010581112.6A patent/CN113832458A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102161134A (en) * | 2009-12-01 | 2011-08-24 | 南车青岛四方机车车辆股份有限公司 | Hybrid welding method of variable-polarity square-wave tungsten electrode argon arc and laser |
| CN104842048A (en) * | 2015-05-14 | 2015-08-19 | 天津大学 | Argon tungsten-arc welding and cold metal transition welding composite heat source welding device and method and application |
| CN107322148A (en) * | 2015-05-14 | 2017-11-07 | 天津大学 | Welding method and the application of composite heat power supply are welded based on argon tungsten-arc welding and cold metal transfer |
| CN105414764A (en) * | 2015-12-30 | 2016-03-23 | 哈尔滨工业大学 | TIG (tungsten inert gas welding) arc synchronous preheating assisted connection method based on laser additive manufacturing |
| CN110804711A (en) * | 2018-08-06 | 2020-02-18 | 天津大学 | High-entropy alloy powder and preparation method and application of laser cladding layer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415646A (en) * | 2022-09-06 | 2022-12-02 | 上海工程技术大学 | Preparation method of medium-entropy/high-entropy alloy cladding layer |
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Application publication date: 20211224 |