CN109434096A - A kind of enhancement type nanometer WC/AlSi10Mg composite powder and increasing material manufacturing technique - Google Patents
A kind of enhancement type nanometer WC/AlSi10Mg composite powder and increasing material manufacturing technique Download PDFInfo
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- CN109434096A CN109434096A CN201811490873.XA CN201811490873A CN109434096A CN 109434096 A CN109434096 A CN 109434096A CN 201811490873 A CN201811490873 A CN 201811490873A CN 109434096 A CN109434096 A CN 109434096A
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- 229910003407 AlSi10Mg Inorganic materials 0.000 title claims abstract description 57
- 239000000843 powder Substances 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 20
- 238000000227 grinding Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract 2
- 230000000996 additive effect Effects 0.000 abstract 2
- 239000000523 sample Substances 0.000 description 20
- 238000009826 distribution Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006101 laboratory sample Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
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- B22F1/0003—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/34—Process control of powder characteristics, e.g. density, oxidation or flowability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
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- 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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Abstract
本发明公开了一种增强型纳米WC/AlSi10Mg复合材料粉末及增材制造工艺，属于增材制造技术领域。将0.1％的纳米WC加入AlSi10Mg粉末中并用GH‑17型三维运动高效混合机对两种粉末进行20min混料，再经真空干燥箱烘干10h得到增强型纳米WC/AlSi10Mg复合材料粉末；本发明的复合材料粉末具有较好的流动性、球形度以及打印稳定性高等特点；采用激光将复合材料粉末融化、凝固；大大提高AlSi10Mg合金强度的同时提升了塑性。
The invention discloses an enhanced nanometer WC/AlSi10Mg composite material powder and an additive manufacturing process, belonging to the technical field of additive manufacturing. Add 0.1% nano-WC to AlSi10Mg powder and use GH‑17 type three-dimensional motion high-efficiency mixer to mix the two powders for 20 minutes, then dry in a vacuum oven for 10 hours to obtain enhanced nano-WC/AlSi10Mg composite material powder; the present invention The composite material powder has the characteristics of good fluidity, sphericity and high printing stability; the composite material powder is melted and solidified by laser; the strength of AlSi10Mg alloy is greatly improved while the plasticity is improved.
Description
Technical field
The present invention relates to increases material manufacturing technology fields, more particularly relate to enhancement type nanometer WC/AlSi10Mg composite material
Powder and increasing material manufacturing technique.
Background technique
AlSi10Mg alloy has many advantages, such as that density is small, corrosion resistance is good, specific strength is high, make its aerospace, automobile,
It is widely applied in heat-exchange apparatus.The AlSi10Mg alloy part of SLM production has close to theoretical density, raw with conventional casting techniques
The material of production, which is compared, has excellent mechanical performance.However, modern industry increasingly increases high-intensitive and rigidity light material
Long, traditional processing material is much not suitable for the SLM industrial application of current and future.It is a kind of novel compound therefore, it is necessary to find
Material meets industrial application.Particle enhanced aluminum-based composite material because its low-density, high intensity, low thermal expansion coefficient and preferably
Wear-resisting property can be widely applied to various industrial applications.Research shows that the application of ceramic particle can effectively increase composite wood
The mechanical property of material.
Summary of the invention
Goal of the invention: the purpose of the present invention is to provide a kind of enhancement type nanometer WC/AlSi10Mg composite powder and
Increasing material manufacturing technique, composite powder provided by the invention and technique can obtain the aluminium alloy of good quality.
Technical scheme is as follows:
The present invention provides a kind of enhancement type nanometer WC/AlSi10Mg composite powders, based on following mass fraction
Component is prepared:
Nano WC powder 0.1%；
AlSi10Mg powder Balance.
In preferably technical solution of the invention,
The nanometer WC partial size is 100~300nm；
The AlSi10Mg powder diameter is 15~53 μm.
In preferably technical solution of the invention, the nano WC powder and AlSi10Mg powder is taken to be put into GH-17 type
In three-dimensional motion high efficient mixer, mixing 20min, then vacuum dried case dry 10h；The composite powder particle diameter distribution
Concentrate on 20~60 μm.
The present invention also provides a kind of enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing techniques, include
Following steps:
S1: nanometer WC/AlSi10Mg composite powder is subjected to powdering, forms powder bed；
S2: under inert gas protection, laser scanning is carried out to powder bed, carries out increasing material manufacturing；
S3: the impurity that fusing powder is formed is eliminated using air cleaning system；
S4: step S1~S3 is repeated.
In preferably technical solution of the invention, the power of the laser scanning is 400W~500W.
In preferably technical solution of the invention, the spot diameter of the laser scanning is 50~75 μm.
In preferably technical solution of the invention, the powdering is with a thickness of 30~50 μm.
In preferably technical solution of the invention, the speed of the laser scanning is 1.8~2.2m/s.
In preferably technical solution of the invention, in the S2 step, under inert gas protection, oxygen content is 500~
2000ppm。
In preferably technical solution of the invention, adjacent two layers laser beam scan path rotates 67 ° counterclockwise, and substrate temperature is
100 DEG C~120 DEG C.
The invention has the benefit that
In the present invention, WC/AlSi10Mg nano composite powder good sphericity, size distribution concentrate on 20~60 μ
m.Coupon is prepared using selective laser melting (SLM) molding machine.Consistency reaches 99% or more, and hardness is about 158.89HV, compares
AlSi10Mg sample increases 14.58%.The growth of WC/AlSi10Mg sample tissue is uniform, fine and close, there is apparent molten bath line.It is brilliant
Intragranular portion is α-Al matrix, and boundary is the common reciever for being mingled with WC.WC/AlSi10Mg sample yield strength reaches
337.75MPa, ultimate strength are up to 514.00MPa, elongation percentage 3.78%.Increase respectively compared to same process AlSi10Mg sample
Add 4.73%, 6.25% and 35.97%.Therefore, SLM forms WC/AlSi10Mg part of nanometer composite material and compares
AlSi10Mg part has better application prospect.
Detailed description of the invention
Fig. 1 nanometer WC/AlSi10Mg composite powder SEM shape appearance figure；
Fig. 2 nanometer WC/AlSi10Mg composite powder grain size distribution；
Fig. 3 standard tensile specimen size；
Fig. 4 AlSi10Mg sample horizontal plane SEM figure；
Fig. 5 WC/AlSi10Mg sample horizontal plane SEM figure；
Fig. 6 AlSi10Mg sample and WC/AlSi10Mg sample microscopic structure quantify comparison diagram；
Fig. 7 AlSi10Mg sample and WC/AlSi10Mg sample transverse direction room temperature tensile properties comparison diagram.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
Below with reference to embodiment to further detailed description of the present invention, but implementation of the invention is without being limited thereto.
Below and pass through specific embodiment to further illustrate the technical scheme of the present invention.
Embodiment provides a kind of enhancement type nanometer WC/AlSi10Mg composite powder and increasing material manufacturing technique:
0.1% nanometer WC is added in AlSi10Mg powder and with GH-17 type three-dimensional motion high efficient mixer to two kinds
Powder carries out 20min mixing, then vacuum dried case dries 10h, finally obtains the WC/ of the WC containing nanometer needed for experiment
AlSi10Mg nano composite powder.Composite powder SEM shape appearance figure is shown in Fig. 1, and particle diameter distribution is shown in Fig. 2.
Present case prepares laboratory sample using Beijing Long Yuan AFS-260 selective laser melting (SLM) molding machine.By the compound of preparation
After material powder is packed into feed bin, technological parameter is arranged: the power of laser scanning is 400W；The spot diameter of laser scanning is 75 μ
m；Powdering is with a thickness of 50 μm；The speed of laser scanning is 2m/s；Oxygen content is 2000ppm；Substrate temperature is 120 DEG C；Adjacent two
Layer laser beam scan path rotates 67 ° counterclockwise.Go out WC/AlSi10Mg tensile sample and 1cm*1cm*1cm by Fig. 3 size marking
Metallographic test block.Later use same equipment, same process print under identical condition AlSi10Mg tensile sample and
The metallographic test block of 1cm*1cm*1cm.Sample utilizes sand-blasting machine and magnetic force polisher sanding and polishing after processing.Passing through sand paper
After polishing machine polishing and Keller reagent corrosion 10s, using Zeiss microscope and 200 scanning electron of Holland FEI Quanta
Micro- sem observation microstructure.Obtain the microstructure such as Fig. 4, Fig. 5 and Fig. 6.Separately by AlSi10Mg tensile sample and WC/
AlSi10Mg tensile sample executes GB/T 228.1-2010 standard testing at room temperature two using UH4304GD electronic universal tester
The tensile property of group sample, rate of extension 1mm/min., obtain the tensile property result such as Fig. 7.
Eutectic Si and Al matrix size is respectively less than AlSi10Mg sample in WC/AlSi10Mg sample.WC/AlSi10Mg sample
Yield strength, tensile strength, elongation after fracture and hardness are respectively 337.75MPa, 514.00MPa, 3.78%, 158.89HV.
4.73%, 6.25%, 35.97% and 14.58% has been increased separately compared to AlSi10Mg sample., technical solution of the present invention is big
Plasticity is improved while big raising AlSi10Mg alloy strength.
The above is only some examples of embodiment of the present invention, it should be pointed out that: for the technology people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of enhancement type nanometer WC/AlSi10Mg composite powder, which is characterized in that the component based on following mass fraction
It is prepared:
Nano WC powder 0.1%；
AlSi10Mg powder Balance.
2. enhancement type nanometer WC/AlSi10Mg composite powder according to claim 1, it is characterised in that:
The nanometer WC partial size is 100~300nm；
The AlSi10Mg powder diameter is 15~53 μm.
3. enhancement type nanometer WC/AlSi10Mg composite powder according to claim 1, it is characterised in that:
The nano WC powder and AlSi10Mg powder is taken to be put into mixing machine, mixing 20min, then the drying of vacuum dried case
10h；The composite powder centralized particle diameter is at 20~60 μm.
4. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique described in a kind of claims 1 to 3,
It is characterized in that, comprises the following steps:
S1: nanometer WC/AlSi10Mg composite powder is subjected to powdering, forms powder bed；
S2: under inert gas protection, laser scanning is carried out to powder bed, carries out increasing material manufacturing；
S3: the impurity that fusing powder is formed is eliminated using air cleaning system；
S4: step S1~S3 is repeated.
5. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique according to claim 4, feature
It is:
The power of the laser scanning is 400W~500W.
6. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique according to claim 4, feature
It is:
The spot diameter of the laser scanning is 50~75 μm.
7. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique according to claim 4, feature
It is:
The powdering is with a thickness of 30~50 μm.
8. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique according to claim 4, feature
It is:
The speed of the laser scanning is 1.8~2.2m/s.
9. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique according to claim 4, feature
It is:
In the S2 step, under inert gas protection, oxygen content is 500~2000ppm.
10. enhancement type nanometer WC/AlSi10Mg composite powder increasing material manufacturing technique according to claim 4, special
Sign is:
Adjacent two layers laser beam scan path rotates 67 ° counterclockwise, and substrate temperature is 100 DEG C~120 DEG C.
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| CN111940730A (en) * | 2020-06-23 | 2020-11-17 | 南昌大学 | Method for preparing metal matrix composite in situ through laser additive |
| CN112708805A (en) * | 2020-12-14 | 2021-04-27 | 华中科技大学 | Aluminum alloy mixed powder, method for improving density of aluminum alloy product and product |
| CN113021891A (en) * | 2020-12-29 | 2021-06-25 | 贵州电网有限责任公司 | Laser 3D printing method for AlSi10Mg aluminum alloy electric non-standard metal tool |
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| CN110551922B (en) * | 2019-09-24 | 2021-08-06 | 飞而康快速制造科技有限责任公司 | High mass fraction WCpAl composite material and preparation method thereof |
| CN111940730A (en) * | 2020-06-23 | 2020-11-17 | 南昌大学 | Method for preparing metal matrix composite in situ through laser additive |
| CN112708805A (en) * | 2020-12-14 | 2021-04-27 | 华中科技大学 | Aluminum alloy mixed powder, method for improving density of aluminum alloy product and product |
| CN113021891A (en) * | 2020-12-29 | 2021-06-25 | 贵州电网有限责任公司 | Laser 3D printing method for AlSi10Mg aluminum alloy electric non-standard metal tool |
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