CN105441771B - Application of the hexa-atomic alloy powder in laser melting coating - Google Patents
Application of the hexa-atomic alloy powder in laser melting coating Download PDFInfo
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- CN105441771B CN105441771B CN201511015607.8A CN201511015607A CN105441771B CN 105441771 B CN105441771 B CN 105441771B CN 201511015607 A CN201511015607 A CN 201511015607A CN 105441771 B CN105441771 B CN 105441771B
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- alloy powder
- hexa
- melting coating
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Classifications
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- 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
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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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
Abstract
The invention discloses application of the hexa-atomic alloy powder in laser melting coating, alloy powder composition is expressed as FeNiCrAlSiCu, and the molal quantity that six kinds of metallic elements use is consistent.Proportioning calculating is carried out first, in accordance with the molar ratio of respective element, it is sufficiently mixed after the quality of each component of precise with uniformly, it is applied in laser melting coating welding using the alloy powder of the present invention, after hexa-atomic high-entropy alloy powder and ethyl alcohol are mixed, it is coated uniformly on substrate material surface, cladding layer can be obtained by laser melting coating after drying.Technical solution of the present invention provides the high-entropy alloy powder that is collectively constituted by metallic element and nonmetalloid, improves the self-fluxing nature of powder, can prepare that forming is good, hardness is higher, the preferable cladding layer of wearability, and performance has compared with base material to be obviously improved.
Description
The present patent application is point of parent application " hexa-atomic high-entropy alloy powder and laser cladding layer preparation method and application "
Case application, applying date of parent application are on October 10th, 2013, parent application application No. is 2013104710700.
Technical field
The present invention relates to more pivot laser melting coating high-entropy alloy powders and cladding layer preparation fields, more particularly,
It is related to hexa-atomic high-entropy alloy powder and laser cladding layer preparation method and application.
Background technology
More pivot high-entropy alloys are that one kind that last century the nineties are proposed by China Taiwan's scholars professor Ye Junwei is novel
Alloy, high-entropy alloy are different from the conventional alloys based on single-element, it is made of 5~13 kinds of elements, each element rubs
For that score between 5%~35%, performance is determined by a variety of pivot collective effects.Such alloy design concept carries
Go out, broken the design philosophy based on conventional alloys single element, opens a new alloy design field.Due to high-entropy alloy
The good characteristic that many conventional alloys do not have is showed, such as high rigidity, high processing hardening, high temperature resistance soften, are corrosion-resistant, resistance to
The excellent specific properties such as high-temperature oxydation can be applied to heat-resisting material, chemical industry, naval vessel corrosion resistant material, aircraft turbine blades, high temperature
The heat proof material of stove, has great application prospect.
High-entropy alloy coating is prepared by using the method for electro-deposition and magnetron sputtering currently, having, but passes through this
The coating that a little methods obtain is too thin, cannot meet heavy-duty applications occasion.Laser melting coating has high heating and cooling rate, coating
It is metallurgical binding with matrix, bond strength is high, and coating layer thickness reaches as high as several millimeters.In addition, the quick solidification of laser melting coating is special
Point can be such that alloy structure refines, to obtain higher hardness and wear-resisting property.But at present about laser melting coating high-entropy alloy
The research of coating is less, is still in infancy.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of high-entropy alloy powder material and cladding layers
Preparation method obtains and shapes good cladding layer, improves material hardness and wearability.
The technical purpose of the present invention is achieved by following technical proposals：
Hexa-atomic high-entropy alloy powder is made of Fe, Ni, Cr, Al, Si and Cu element powders, i.e. alloy powder composition indicates
It is specifically, between described Fe, Ni, Cr, Al, Si and Cu equimolar ratio for FeNiCrAlSiCu, i.e. six kinds of metallic elements make
Molal quantity is consistent.
When being prepared, proportioning calculating is carried out first, in accordance with the molar ratio of respective element, each component of precise
It is sufficiently mixed after quality uniformly, the powder of various elements is weighed for example, by using electronic scale, is ground in mortar
Mill half an hour makes it be uniformly mixed.It is the powder that purity is more than or equal to 99% wherein to select each component, and grain size is 100-
500 mesh, preferably 200-300 mesh.
It is applied in laser melting coating welding using the alloy powder of the present invention, hexa-atomic high-entropy alloy powder and ethyl alcohol is mixed
Afterwards, it is coated uniformly on substrate material surface, cladding layer can be obtained by laser melting coating after drying.
The pure absolute ethyl alcohol of the wherein described ethyl alcohol Analysis about Selection is pressed in hexa-atomic high-entropy alloy powder and alcohol mixture
It is made of 92~95% alloy powder and 5~8% ethyl alcohol according to mass percent.
Upon mixing, paste or paste are formed, in order to continue to coat in substrate material surface, it is coated after in matrix material
Expect that surface forms preformed layer, the prefabricated layer thickness is 1-2mm.
When carrying out laser melting coating, selection basis material is 42CrMo steel, and technological parameter is：Laser power be 1550~
1650KW, spot diameter are 0.8~1.0mm, and sweep speed is 150~200mm/min, defocusing amount 0mm, protective gas use
Argon gas or helium, gas flow are 20~25L/min；It is preferred that laser power be 1580~1620KW, spot diameter be 0.8~
1.0mm, sweep speed be 180~200mm/min, defocusing amount 0mm, protective gas use argon gas, gas flow be 22~
25L/min。
Compared with prior art, the invention has the advantages that：
(1) in alloy powder of the present invention, the maximum performance that each element is given full play to except basic element iron, Ni master are removed
It is used to improve material wetability and improves cladding layer capability, Cr mainly improves cladding layer hardness by solution strengthening and is used for
Cladding layer corrosion resistance is improved, Al mainly improves the high temperature oxidation resistance of cladding layer, and by solution strengthening effect and increases brilliant
Boundary's skid resistance improves cladding layer hardness.Further, since aluminium surface, which easily aoxidizes, forms fine and close oxidation film, add in the alloy
Add Al that can also improve the corrosion resistance of cladding layer, Si is mainly used for deoxidation, and Cu is mainly used for improving cladding layer wearability.
(2) the present invention provides a kind of high-entropy alloy powders collectively constituted by metallic element and nonmetalloid, improve
The self-fluxing nature of powder.
(3) present invention is prepared for that forming is good, hardness is higher, the preferable cladding layer of wearability, and performance has bright compared with base material
It is aobvious to improve.
Description of the drawings
Fig. 1 is FeNiCrAlSiCu cladding layer macro morphologies.
Fig. 2 is FeNiCrAlSiCu cladding layer overall pictures.
Fig. 3 is FeNiCrAlSiCu cladding layer metallographic structures.
Specific implementation mode
The technical solution further illustrated the present invention with reference to specific embodiment.Each metallic element source such as following table institute
Show：
| Nomenclature of drug | Molecular formula | Purity | Specification | Manufacturer |
| Iron powder | Fe | >=99% | It analyzes pure | One factory of Tianjin chemical reagent |
| Chromium powder | Cr | >=99% | It analyzes pure | Fine chemistry industry research institute is recovered in Tianjin |
| Nickel powder | Ni | >=99.5% | It analyzes pure | Two factory of Hubei Tianmen chemical reagent |
| Aluminium powder | Al | >=99% | It analyzes pure | Tianjin Feng Chuan chemical reagent Co., Ltd |
| Silica flour | Si | >=99% | It analyzes pure | Fine chemistry industry research institute is recovered in Tianjin |
| Copper powder | Cu | >=99.5% | It analyzes pure | Ke Wei companies of University Of Tianjin |
Basis material select 42CrMo steel, using mechanical grinding remove oxide, degreased using acetone, chemistry at
Divide as shown in following table (mass fraction %)：
| C | Mn | Si | Cr | Mo | Ni | Cu |
| 0.38~0.45 | 0.50~0.80 | 0.17~0.37 | 0.90~1.20 | 0.15~0.25 | ≤0.030 | ≤0.030 |
Implemented by the following method：
1. carrying out FeNiCrAlCuMn high-entropy alloy powders proportioning according to molar ratio to calculate, various members are weighed using electronic scale
Element powder, in mortar grind half an hour make its be uniformly mixed.
2. after the ethyl alcohol of 92~95% laser cladding powder and 5~8% is mixed into paste or paste, being coated in matrix
Material surface, prefabricated layer thickness are 1-2mm, can be obtained cladding layer by laser melting coating after air-drying.
3. laser is selected to use JK2003SM types Nd：YAG carries out laser melting coating.
4. metallographic structure observation device uses OLYMPUS-GX51 metallographic microscopes, manufacturer：Japanese OLYMPUS (Olympics
Bath) company.
Case study on implementation 1
1. carrying out FeNiCrAlSiCu high-entropy alloy powders proportioning according to molar ratio to calculate：Fe is 16.67mol%, and Ni is
16.67mol%, Cr 16.67mol%, Al 16.67mol%, Si 16.66mol%, Cu 16.66mol%, total moles
Than being 100%, and use electronic scale weighs the powder of various elements.
2. pour into mortar, grinding half an hour in mortar makes it be uniformly mixed.
3. by prepared laser cladding powder, after 92% and 8% ethyl alcohol is mixed into paste or paste, it is coated in 42CrMo
Steel surface, coating thickness 1mm carry out laser melting coating after air-drying.
4. laser cladding technological parameter is：Laser power is 1550KW, spot diameter 0.8mm, and sweep speed is
180mm/min, defocusing amount 0mm, protective gas use argon gas, gas flow 25L/min.
5. being corroded using chloroazotic acid after laser melting coating, the metallograph of cladding layer is obtained.
The microhardness of cladding layer is measured using automatic turret digital display sclerometer, the experimental results are shown inthe following table, laser
Average hardness has reached 523.3HV after cladding, is significantly improved than base material.
| Hardness number | Hardness number 2 | Hardness number 3 | Average hardness | |
| Base material | 286HV | 282HV | 285HV | 284HV |
| FeNiCrAlSiCu cladding layers | 520.8HV | 523.8HV | 525.2HV | 523.3HV |
Using its wearability of MM-200 type determination of wear testing machine, specimen size is 7 × 7 × 25mm, and friction duty is
Dry grinding sliding friction, is loaded as 5kg, rotating speed 200r/min, experimental period 1h；Front and back quality is measured with electronic scale (to measure
It is preceding to be cleaned with ultrasonic washing instrument), the experimental results are shown inthe following table.As can be seen that the weightlessness of base material is the 11.49 of cladding layer
Times, compared with base material, the wearability of cladding layer significantly improves.
| Quality/g before abrasion | Quality/g before abrasion | Weightlessness/mg | |
| Base material | 9.0479 | 9.0008 | 47.1 |
| FeNiCrAlSiCu cladding layers | 9.2616 | 9.2575 | 4.1 |
Case study on implementation 2
1. by prepared laser cladding powder, after 95% and 5% ethyl alcohol is mixed into paste or paste, it is coated in 42CrMo
Steel surface, coating thickness 2mm carry out laser melting coating after air-drying.
2. laser cladding technological parameter is：Laser power is 1650KW, spot diameter 1.0mm, and sweep speed is
200mm/min, defocusing amount 0mm, protective gas use helium, gas flow 20L/min.
3. being tested for the property using identical, the results are shown in table below：
Case study on implementation 3
1. by prepared laser cladding powder, after 94% and 6% ethyl alcohol is mixed into paste or paste, it is coated in 42CrMo
Steel surface, coating thickness 1.5mm carry out laser melting coating after air-drying.
2. laser cladding technological parameter is：Laser power is 1620KW, spot diameter 0.9mm, and sweep speed is
180mm/min, defocusing amount 0mm, protective gas use argon gas, gas flow 22L/min.
3. being tested for the property using identical, the results are shown in table below：
Case study on implementation 4
1. by prepared laser cladding powder, after 93% and 7% ethyl alcohol is mixed into paste or paste, it is coated in 42CrMo
Steel surface, coating thickness 1mm carry out laser melting coating after air-drying.
2. laser cladding technological parameter is：Laser power is 1580KW, spot diameter 0.8mm, and sweep speed is
150mm/min, defocusing amount 0mm, protective gas use helium, gas flow 20L/min
3. being tested for the property using identical, the results are shown in table below：
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (5)
1. application of the hexa-atomic alloy powder in laser melting coating, which is characterized in that hexa-atomic alloy powder is by Fe, Ni, Cr, Al, Si
It is formed with Cu element powders, is equimolar ratio between described Fe, Ni, Cr, Al, Si and Cu；Used in laser melting coating with
Microhardness and wear-resisting property are improved, after hexa-atomic alloy powder and ethyl alcohol are mixed, is coated uniformly on substrate material surface, it is dry
Cladding layer can be obtained by laser melting coating afterwards, in hexa-atomic high-entropy alloy powder and alcohol mixture, according to mass percent
It is made of 92~95% alloy powder and 5~8% ethyl alcohol；When carrying out laser melting coating, selection basis material is 42CrMo
Steel, technological parameter are：Laser power be 1550~1650kW, spot diameter be 0.8~1.0mm, sweep speed be 150~
200mm/min, defocusing amount 0mm, it is 20~25L/min that protective gas, which uses argon gas or helium, gas flow,.
2. application of the hexa-atomic alloy powder according to claim 1 in laser melting coating, which is characterized in that select each group
It is powder of the purity more than or equal to 99% to divide, and grain size is 100-500 mesh.
3. application of the hexa-atomic alloy powder according to claim 1 in laser melting coating, which is characterized in that select each group
It is powder of the purity more than or equal to 99% to divide, and grain size is 200-300 mesh.
4. application of the hexa-atomic alloy powder according to claim 1 in laser melting coating, which is characterized in that in hexa-atomic alloy
After powder and ethyl alcohol mixing, form paste or paste, in order to continue to coat in substrate material surface, it is coated after in matrix material
Expect that surface forms preformed layer, the prefabricated layer thickness is 1-2mm.
5. application of the hexa-atomic alloy powder according to claim 1 in laser melting coating, which is characterized in that carrying out laser
When cladding, preferably laser power is 1580~1620kW, and spot diameter is 0.8~1.0mm, and sweep speed is 180~200mm/
Min, defocusing amount 0mm, it is 22~25L/min that protective gas, which uses argon gas, gas flow,.
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| CN201511015607.8A CN105441771B (en) | 2013-10-10 | 2013-10-10 | Application of the hexa-atomic alloy powder in laser melting coating |
| CN201310471070.0A CN104141085B (en) | 2013-10-10 | 2013-10-10 | Hexa-atomic high-entropy alloy powder and laser cladding layer preparation method and application |
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| CN104313572B (en) * | 2014-11-14 | 2017-10-03 | 重庆理工大学 | A kind of preparation method of aluminum alloy surface laser alloying Al Cr Ti Si Cu multi-principal elements alloy coatings |
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| CN105401114B (en) * | 2015-11-18 | 2017-11-14 | 郑郧 | A kind of method that titanium alloy surface prepares multi-principal elements alloy coating |
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| CN105862035A (en) * | 2016-06-25 | 2016-08-17 | 芜湖三刀材料科技有限公司 | High-entropy alloy coating and preparation method thereof |
| CN105950947B (en) * | 2016-07-06 | 2018-08-14 | 浙江亚通焊材有限公司 | Rich iron high-entropy alloy powder body material and preparation method thereof for 3D printing |
| CN106756636B (en) * | 2016-11-28 | 2018-12-07 | 西安交通大学 | A kind of high anti-corrosion amorphous high-entropy alloy and preparation method thereof |
| CN109648166B (en) * | 2017-10-10 | 2021-01-29 | 沈阳金研激光再制造技术开发有限公司 | Preparation method of titanium alloy large-thickness high-hardness coating |
| CN108315733B (en) * | 2018-02-26 | 2020-04-17 | 沈阳工业大学 | Powder for laser cladding aluminum bronze alloy gradient coating and preparation method thereof |
| CN109913717B (en) * | 2019-04-04 | 2020-11-17 | 西安交通大学 | Light high-entropy alloy and preparation method thereof |
| CN113005349B (en) * | 2021-02-24 | 2022-03-11 | 沈阳工业大学 | Fe-Cr-Ni-Cu-Al high-damping high-entropy alloy and preparation method thereof |
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| CN103290404A (en) * | 2013-05-06 | 2013-09-11 | 浙江工业大学 | Laser-cladding high-entropy alloy powder and preparation method of high-entropy alloy coating |
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| CN1353204B (en) * | 2000-11-09 | 2012-05-23 | 国立清华大学 | High-irregularity multi-element alloy |
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| TWI347978B (en) * | 2007-09-19 | 2011-09-01 | Ind Tech Res Inst | Ultra-hard composite material and method for manufacturing the same |
| CN102828139A (en) * | 2012-09-28 | 2012-12-19 | 安徽工业大学 | High-entropy alloy powder used for spraying |
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| Title |
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| "AlCuCrFeNiMn高熵合金组织及硬度的研究";皮锦红等;《热加工工艺》;20100228;第39卷(第4期);第22-24页 * |
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