CN108359977A - A kind of laser melting coating FeCoVWNbSc high-entropy alloy powders and application method - Google Patents
A kind of laser melting coating FeCoVWNbSc high-entropy alloy powders and application method Download PDFInfo
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- CN108359977A CN108359977A CN201810318504.6A CN201810318504A CN108359977A CN 108359977 A CN108359977 A CN 108359977A CN 201810318504 A CN201810318504 A CN 201810318504A CN 108359977 A CN108359977 A CN 108359977A
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- 239000000843 powder Substances 0.000 title claims abstract description 57
- 239000000956 alloy Substances 0.000 title claims abstract description 51
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 41
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 239000011248 coating agent Substances 0.000 title claims abstract description 33
- 230000008018 melting Effects 0.000 title claims abstract description 22
- 238000002844 melting Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 12
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 12
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 11
- 238000005253 cladding Methods 0.000 claims description 37
- 239000007789 gas Substances 0.000 claims description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000000498 ball milling Methods 0.000 claims description 14
- 238000004372 laser cladding Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005238 degreasing Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 31
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 46
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000007747 plating Methods 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
- C23C24/106—Coating with metal alloys or metal elements only
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The present invention discloses a kind of laser melting coating FeCoVWNbSc high-entropy alloy powders and application method, belongs to Laser Surface Modification Technology field.The FeCoVWNbSc high-entropy alloy powders include following component：Fe, Co, V, W, Nb and Sc, wherein the molar ratio of Fe, Co, V, W, Nb, Sc are 1:1:1:1:1:0.02~0.04；Interaction shows the performances such as excellent resistance to high temperature oxidation, corrosion between addition Sc makes each element in Fe, Co, V, W, Nb quinary alloy, and coating texture is excellent；Laser melting coating can also make coating form a tiny dilution zone with base material, to form metallurgical binding so that base material has good combination with interlayer is applied, and helps to improve the durability of coating.
Description
Technical field
The present invention relates to a kind of laser melting coating FeCoVWNbSc high-entropy alloy powders and application method, belong to laser surface
Technical field of modification.
Technical background
Conventional alloys are using a kind of element as essential element（Referred to as pivot）, alloy is usually improved by adding appropriate other members
Performance.High-entropy alloy is also known as multi-principal elements alloy, is to be made of 5-13 kind elements, the molar ratio of each element is between 5% to 35%
Between, the performance of alloy is determined by a variety of pivot collective effects.It is hard that high intensity, height can be obtained by composition design appropriate
Degree, high temperature resistant soften and the high-entropy alloy of highly corrosion resistant, to (such as Aeronautics and Astronautics, energy in certain particular job environment
The fields such as source) it is with important application prospects.
Currently, the research of high-entropy alloy mainly prepares block materials, the maximum limit of founding mode using vacuum casting mode
System is not doing specimen size greatly, and only needs sub-fraction region that can meet the requirements in research process, so as to cause molten
The increase of cost in sample making course is cast, and laser melting coating nobleness and gold not only can guarantee excellent performance, moreover it is possible to effectively drop
Low cost.Although thering is scholar to prepare noble and gold plating by magnetron sputtering and the method for chemical deposition, because of its combination
Usually physical bond or mechanical base close, and keep the bond strength between coating and base material relatively low, and laser melting coating can not only base again
Material goes to increase bond strength with interlayer formation metallurgical binding is applied, and can also effectively control coating layer thickness, reach as high as several millimeters.Cause
This obtains the preferable high-entropy alloy cladding layer of performance by the proportion design of alloy appropriate, for development high-entropy alloy in reality
Border application aspect has huge meaning.
Invention content
It is described the purpose of the present invention is to provide a kind of laser melting coating FeCoVWNbSc high-entropy alloy powders
FeCoVWNbSc high-entropy alloy powders include following component：Fe, Co, V, W, Nb and Sc, wherein Fe, Co, V, W, Nb, Sc's rubs
You are than being 1:1:1:1:1:0.02~0.04.
Another object of the present invention is that providing the FeCoVWNbSc high-entropy alloy powders is used to prepare laser cladding layer
Method specifically includes following steps：
（1）Each powder is weighed and mixes laggard row progress vacuum ball milling, Ball-milling Time is more than 2.5 hours, is obtained after being sufficiently mixed
Alloy powder, powder diameter are 170-310 mesh；
（2）By step（1）Obtained alloy powder is uniformly preset at by processed 45 steel surface of degreasing and rust removal, is formed preset
Layer is put into drying in thermostatic drying chamber, corresponding high-entropy alloy coating can be obtained through laser melting coating after drying before cladding.
Preferably, laser cladding technological parameter of the present invention is：Laser power is 3500-4000W, and sweep speed is
250-400mm/min, spot diameter 3.0mm, defocusing amount 20mm, protective gas use argon gas, gas flow 8-15L/
min。
Preferably, step of the present invention（2）Middle drying condition is：The thickness of the dry 8-12h at 80 DEG C, preformed layer are 0.8-
1.3mm。
Preferably, purity >=99.9% of each powder of the present invention.
Advantageous effect of the present invention：
（1）The obtained high-entropy alloy of the present invention it is crisp to reduce high temperature while taking into account the characteristics such as corrosion resistance, plasticity, intensity
Property.
（2）The present invention obtains being molded good cladding layer by laser melting and coating process, and high-entropy alloy powder proportioning is not complete
Portion is matched using equimolar, but purposefully regulation and control heterogeneity and proportioning, it is expected that obtaining the superior cladding coating of performance.
（3）Power formulations provided by the invention have excellent binding performance with base material, in the premise for forming high-entropy alloy
Under, gained cladding cladding layer has the defects of good macro morphology, flawless, hole.
Description of the drawings
Fig. 1 is 1 cladding layer metallographic structure of the embodiment of the present invention；
Fig. 2 is 2 cladding layer metallographic structure of the embodiment of the present invention；
Fig. 3 is 3 cladding layer metallographic structure of the embodiment of the present invention；
Fig. 4 is 4 cladding layer metallographic structure of the embodiment of the present invention；
Fig. 5 is 5 cladding layer metallographic structure of the embodiment of the present invention.
Specific implementation mode
With reference to specific embodiment, invention is further described in detail, but protection scope of the present invention is not limited to
The content.
Embodiment 1
High entropy alloy material described in the present embodiment is made of six kinds of elemental powders of Fe, Co, V, W, Nb and Sc, the molar ratio of each component
For：1:1:1:1:1:0.02, and various elemental metalpowders are weighed using analysis electronic scale, the gross mass of metal powder is 50g,
The quality of metal powder is respectively：Fe：6.30773g Co：6.64564g、V：5.74453g W：10.47532g Nb：
20.72537g Sc：0.10181g.
The preparation method of high entropy alloy material cladding layer, includes the following steps described in the present embodiment：
（1）After each powder is mixed, vacuum ball milling is carried out, ball milling 3.5h is sufficiently mixed, and obtains alloy powder, powder diameter
For 200-300 mesh.
（2）Basis material selects 45 steel, removes oxide using mechanical grinding, is degreased using acetone, and using super
Sound wave alcohol washes.
（3）By step（1）Obtained alloy powder material is uniformly compressed on step（2）Treated substrate material surface,
For row at preformed layer, prefabricated layer thickness is 1mm, by laser melting coating can be obtained cladding layer after dry, when carrying out laser melting coating
Technological parameter is：Laser power 3500W, sweep speed 250mm/min, spot diameter 3mm, defocusing amount 20mm, protective gas are adopted
With argon gas, gas flow 8L/min.
Cladding layer after the present embodiment laser cladding is corroded using chloroazotic acid, obtains overlay metallograph, such as Fig. 1
It is shown, it is known that cladding layer compact structure；The microhardness of cladding layer is measured using HVS-1000A type microhardness testers, wherein molten
Coating measures five values with the respectively different position of base material, and removes maximal and minmal value and be averaged later, shown in experimental result,
Average hardness reaches 875HV after laser cladding, is significantly improved compared with base material, shown in table specific as follows.
Embodiment 2
High entropy alloy material described in the present embodiment is made of six kinds of elemental powders of Fe, Co, V, W, Nb and Sc, the molar ratio of each component
For：1:1:1:1:1:0.025, and various elemental metalpowders are weighed using analysis electronic scale, the gross mass of metal powder is
The quality of 50g, metal powder is respectively：Fe：6.30453g Co：6.64227g、V：5.74163g W：10.47003g Nb：
20.71489g Sc：0.12665g.
The preparation method of high entropy alloy material cladding layer, includes the following steps described in the present embodiment：
（1）After each powder is mixed, vacuum ball milling is carried out, ball milling 3h is sufficiently mixed, and obtains alloy powder, powder diameter is
204-310 mesh.
（2）Basis material selects 45 steel, removes oxide using mechanical grinding, is degreased using acetone, and using super
Sound wave alcohol washes.
（3）By step（1）Obtained alloy powder material is uniformly compressed on step（2）Treated substrate material surface,
Row is at preformed layer, and prefabricated layer thickness is 0.9mm, can be obtained cladding layer by laser melting coating after drying, when carrying out laser melting coating
Technological parameter be：Laser power 3800W, sweep speed 270mm/min, spot diameter 3mm, defocusing amount 20mm, protective gas
Using argon gas, gas flow 9L/min.
Cladding layer after the present embodiment laser cladding is corroded using chloroazotic acid, obtains overlay metallograph, such as Fig. 2
It is shown, it is known that cladding layer compact structure；The microhardness of cladding layer is measured using HVS-1000A type microhardness testers, wherein molten
Coating measures five values with the respectively different position of base material, and removes maximal and minmal value and be averaged later, shown in experimental result,
Average hardness reaches 913HV after laser cladding, is significantly improved compared with base material, shown in table specific as follows.
Embodiment 3
High entropy alloy material described in the present embodiment is made of six kinds of elemental powders of Fe, Co, V, W, Nb and Sc, the molar ratio of each component
For：1:1:1:1:1:0.03, and various elemental metalpowders are weighed using analysis electronic scale, the gross mass of metal powder is 50g,
The quality of metal powder is respectively：Fe：6.30134g Co：6.63891g、V：5.73872g W：10.46472g Nb：
20.7044g Sc：0.15191g.
The preparation method of high entropy alloy material cladding layer, includes the following steps described in the present embodiment：
（1）After each powder is mixed, vacuum ball milling is carried out, ball milling 3.5h is sufficiently mixed, and obtains alloy powder, powder diameter
For 200-300 mesh.
（2）Basis material selects 45 steel, removes oxide using mechanical grinding, is degreased using acetone, and using super
Sound wave alcohol washes.
（3）By step（1）Obtained alloy powder material is uniformly compressed on step（2）Treated substrate material surface,
Row is at preformed layer, and prefabricated layer thickness is 1.1mm, can be obtained cladding layer by laser melting coating after drying, when carrying out laser melting coating
Technological parameter be：Laser power 4000W, sweep speed 300mm/min, spot diameter 3mm, defocusing amount 20mm, protective gas
Using argon gas, gas flow 10L/min.
Cladding layer after the present embodiment laser cladding is corroded using chloroazotic acid, obtains overlay metallograph, such as Fig. 3
It is shown, it is known that cladding layer compact structure；The microhardness of cladding layer is measured using HVS-1000A type microhardness testers, wherein molten
Coating measures five values with the respectively different position of base material, and removes maximal and minmal value and be averaged later, shown in experimental result,
Average hardness reaches 937HV after laser cladding, is significantly improved compared with base material, shown in table specific as follows.
Embodiment 4
High entropy alloy material described in the present embodiment is made of six kinds of elemental powders of Fe, Co, V, W, Nb and Sc, the molar ratio of each component
For：1:1:1:1:1:0.035, and various elemental metalpowders are weighed using analysis electronic scale, the gross mass of metal powder is
The quality of 50g, metal powder is respectively：Fe：6.30063g Co：6.63816g、V：5.73807g W：10.46355g Nb：
20.70207g Sc：0.15752g.
The preparation method of high entropy alloy material cladding layer, includes the following steps described in the present embodiment：
（1）After each powder is mixed, vacuum ball milling is carried out, ball milling 3h is sufficiently mixed, and obtains alloy powder, powder diameter is
240-300 mesh.
（2）Basis material selects 45 steel, removes oxide using mechanical grinding, is degreased using acetone, and using super
Sound wave alcohol washes.
（3）By step（1）Obtained alloy powder material is uniformly compressed on step（2）Treated substrate material surface,
Row is at preformed layer, and prefabricated layer thickness is 1.2mm, can be obtained cladding layer by laser melting coating after drying, when carrying out laser melting coating
Technological parameter be：Laser power 4000W, sweep speed 350mm/min, spot diameter 3mm, defocusing amount 20mm, protective gas
Using argon gas, gas flow 11L/min.
Cladding layer after the present embodiment laser cladding is corroded using chloroazotic acid, obtains overlay metallograph, such as Fig. 4
It is shown, it is known that cladding layer compact structure；The microhardness of cladding layer is measured using HVS-1000A type microhardness testers, wherein molten
Coating measures five values with the respectively different position of base material, and removes maximal and minmal value and be averaged later, shown in experimental result,
Average hardness reaches 895HV after laser cladding, is significantly improved compared with base material, shown in table specific as follows.
Embodiment 5
High entropy alloy material described in the present embodiment is made of six kinds of elemental powders of Fe, Co, V, W, Nb and Sc, the molar ratio of each component
For：1:1:1:1:1:0.04, and various elemental metalpowders are weighed using analysis electronic scale, the gross mass of metal powder is 50g,
The quality of metal powder is respectively：Fe：6.29496g Co：6.63219g、V：5.73291g W：10.45414g Nb：
20.68345g Sc：0.20235g.
The preparation method of high entropy alloy material cladding layer, includes the following steps described in the present embodiment：
（1）After each powder is mixed, vacuum ball milling is carried out, ball milling 3h is sufficiently mixed, and obtains alloy powder, powder diameter is
180-260 mesh.
（2）Basis material selects 45 steel, removes oxide using mechanical grinding, is degreased using acetone, and using super
Sound wave alcohol washes.
（3）By step（1）Obtained alloy powder material is uniformly compressed on step（2）Treated substrate material surface,
Row is at preformed layer, and prefabricated layer thickness is 1.3mm, can be obtained cladding layer by laser melting coating after drying, when carrying out laser melting coating
Technological parameter be：Laser power 4000W, sweep speed 270mm/min, spot diameter 3mm, defocusing amount 20mm, protective gas
Using argon gas, gas flow 13L/min.
Cladding layer after the present embodiment laser cladding is corroded using chloroazotic acid, obtains overlay metallograph, such as Fig. 5
It is shown, it is known that cladding layer compact structure；The microhardness of cladding layer is measured using HVS-1000A type microhardness testers, wherein molten
Coating measures five values with the respectively different position of base material, and removes maximal and minmal value and be averaged later, shown in experimental result,
Average hardness reaches 906HV after laser cladding, is significantly improved compared with base material, shown in table specific as follows.
Claims (5)
1. a kind of laser melting coating FeCoVWNbSc high-entropy alloy powders, it is characterised in that：The FeCoVWNbSc high-entropy alloys
Powder includes following component：Fe, Co, V, W, Nb and Sc, wherein the molar ratio of Fe, Co, V, W, Nb, Sc are 1:1:1:1:1:
0.02~0.04.
2. the method that FeCoVWNbSc high-entropy alloy powders are used to prepare laser cladding layer described in claim 1, which is characterized in that
Specifically include following steps：
（1）Each powder is weighed and mixes laggard row progress vacuum ball milling, Ball-milling Time is more than 2.5 hours, is obtained after being sufficiently mixed
Alloy powder, powder diameter are 170-310 mesh；
（2）By step（1）Obtained alloy powder is uniformly preset at by processed 45 steel surface of degreasing and rust removal, is formed preset
Layer is put into drying in thermostatic drying chamber, corresponding high-entropy alloy coating can be obtained through laser melting coating after drying before cladding.
3. method according to claim 2, it is characterised in that：Laser cladding technological parameter is：Laser power is 3500-
4000W, sweep speed 250-400mm/min, spot diameter 3.0mm, defocusing amount 20mm, protective gas use argon gas,
Gas flow is 8-15L/min.
4. method according to claim 2, it is characterised in that：Step（2）Middle drying condition is：The dry 8-12h at 80 DEG C,
The thickness of preformed layer is 0.8-1.3mm.
5. method according to claim 2, it is characterised in that：Purity >=99.9% of each powder.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110257682A (en) * | 2019-07-05 | 2019-09-20 | 昆明理工大学 | A kind of preparation method of high entropy alloy material and its coating |
| CN110343932A (en) * | 2019-08-28 | 2019-10-18 | 合肥工业大学 | A kind of WVTaZrSc infusibility high-entropy alloy and preparation method thereof with high intensity |
| CN111850544A (en) * | 2020-06-22 | 2020-10-30 | 昆明理工大学 | High-entropy alloy coating and preparation method thereof |
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| CN106086580A (en) * | 2016-07-29 | 2016-11-09 | 昆明理工大学 | Laser melting coating high-entropy alloy powder and cladding layer preparation method |
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| US20170369970A1 (en) * | 2016-06-22 | 2017-12-28 | National Tsing Hua University | High-entropy superalloy |
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| CN105714353A (en) * | 2016-02-02 | 2016-06-29 | 北京科技大学 | Method for generating composite oxide nanotube array on high-entropy alloy surface |
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| CN110343932A (en) * | 2019-08-28 | 2019-10-18 | 合肥工业大学 | A kind of WVTaZrSc infusibility high-entropy alloy and preparation method thereof with high intensity |
| CN111850544A (en) * | 2020-06-22 | 2020-10-30 | 昆明理工大学 | High-entropy alloy coating and preparation method thereof |
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