CN112048647A - Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing - Google Patents
Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing Download PDFInfo
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- CN112048647A CN112048647A CN202010912912.1A CN202010912912A CN112048647A CN 112048647 A CN112048647 A CN 112048647A CN 202010912912 A CN202010912912 A CN 202010912912A CN 112048647 A CN112048647 A CN 112048647A
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- 239000000843 powder Substances 0.000 title claims abstract description 54
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 49
- 239000000654 additive Substances 0.000 title claims abstract description 24
- 230000000996 additive effect Effects 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 20
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000009689 gas atomisation Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000011960 computer-aided design Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910003407 AlSi10Mg Inorganic materials 0.000 description 1
- 229910018566 Al—Si—Mg Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
-
- B22F1/0003—
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the technical field of material preparation, and discloses Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing and application thereof, wherein the aluminum alloy powder for laser additive manufacturing comprises the following components in percentage by mass: si: 6.0-8.0%, Mg: 0.60-0.80%, Ti: 0.10-0.20%, Sc: 0.1-0.6%, Zr: 0.1 to 0.4%, and the balance of Al and inevitable impurities. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing is prepared by adopting a gas atomization mode, and can be used for laser additive manufacturing. The Al-Si-Mg-Sc-Zr aluminum alloy powder of the invention has the advantages that the compactness of a sample formed by SLM can reach more than 99.9%, the tensile strength of a deposited sample exceeds 440MPa, the elongation after fracture of the sample after heat treatment exceeds 10%, and no obvious anisotropy exists, thus meeting the application requirements of related fields.
Description
Technical Field
The invention belongs to the technical field of material preparation, relates to a high-strength aluminum alloy, and particularly relates to Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing.
Background
With the strong demand of light weight and structural function integration, high-strength aluminum alloy complex precision parts are widely applied in the fields of aerospace and the like, but due to poor welding performance and casting performance, a high-performance and high-quality structural function integrated component is difficult to prepare by a traditional processing method, and the urgent demand in the fields of aerospace and the like cannot be met.
The Selective Laser Melting (SLM) technology is based on a discrete/stacked Additive Manufacturing (AM) forming idea and a laser welding technology, a digital Computer Aided Design (CAD) model is sliced, laser scanning and filling are carried out in a two-dimensional slice, and the three-dimensional entity is formed after the three-dimensional model and metal powder are stacked layer by layer, so that high-performance and high-precision complex precision parts can be directly prepared from the three-dimensional CAD model and the metal powder.
The aluminum alloy powder for casting such as AlSi7Mg, AlSi10Mg and AlSi12 has good fluidity and is easy to form, most of laser additive manufacturing research and application are limited to the aluminum alloy powder of the system at present, but the tensile strength and the elongation of the laser additive formed part are low, and the use requirement of high-performance parts cannot be met. In addition, the traditional high-strength aluminum alloy powder of 2XXX, 7XXX series and the like is easy to generate thermal cracks in the forming process, the forming difficulty is high, and the application of the high-strength aluminum alloy powder in a laser additive manufacturing process is limited.
It is important to develop high performance aluminum alloy powders for laser additive manufacturing based on the above analysis. At present, microalloying is commonly adopted in China to improve the comprehensive performance of the aluminum alloy powder, wherein alloy elements such as Sc, Zr, Er and Yb can form precipitated phases by themselves to generate the effects of grain refinement, strengthening and the like, for example, in a patent (CN 108486429), the AlSi7Mg aluminum alloy powder special for SLM is developed by adding rare earth erbium elements and zirconium elements (Er: 0.2-0.9% and Zr: 0.05-0.5%), so that the strength of SLM forming parts is improved. The micro-alloying of the Al-Si-Mg alloy is realized by adding Sc and Zr elements, so that the performance of the alloy powder is improved. Sc element is the most effective microalloying element in the aluminum alloy, and Sc and Al form primary Al with micron level3Sc particles and nanoscale secondary Al3Sc particles can be used as an effective heterogeneous nucleating agent to play a role in refining grains, and simultaneously, the nano-scale Al3Sc particlesThe alloy material and a matrix keep coherent, can effectively pin dislocation and block movement of subgrain boundaries, and improves the tensile strength and corrosion resistance of the aluminum alloy. Sc and Zr are jointly added into the aluminum alloy, and the Zr can replace Al3Part of Sc atoms in the Sc compound form Al3(Sc, Zr) composite phase capable of retaining Al3All the beneficial properties of Sc, and higher thermal stability.
Disclosure of Invention
The purpose of the invention is: the Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing is provided to overcome the defects in the prior art and meet the application requirements in the fields of aerospace and the like.
In order to solve the technical problem, the technical scheme of the invention is as follows:
an Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing, comprising the following components in percentage by mass:
si: 6.0-8.0%, Mg: 0.60-0.80%, Ti: 0.10-0.20%, Sc: 0.1-0.6%, Zr: 0.1 to 0.4%, and the balance of Al and inevitable impurities.
Preferably, the Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in percentage by mass:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.1%, Zr: 0.1%, and the balance of Al and inevitable impurities.
Preferably, the Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in percentage by mass:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.5%, Zr: 0.3%, and the balance of Al and inevitable impurities.
Preferably, the Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in percentage by mass:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.6%, Zr: 0.4%, and the balance of Al and inevitable impurities.
Preferably, the Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in percentage by mass:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.3 to 0.5%, Zr: 0.2 to 0.3%, and the balance of Al and inevitable impurities.
The particle size of the Al-Si-Mg-Sc-Zr aluminum alloy powder is 10-150 mu m.
Preferably, the particle size of the Al-Si-Mg-Sc-Zr aluminum alloy powder is 15-53 mu m.
The Al-Si-Mg-Sc-Zr aluminum alloy powder is used for laser additive manufacturing.
The invention has the beneficial effects that: according to the Al-Si-Mg-Sc-Zr aluminum alloy powder, a sample formed by SLM has the compactness of more than 99.9%, the tensile strength of a deposition state exceeds 440MPa, the tensile strength of a deposition state sample exceeds 440MPa, the elongation after fracture of the heat-treated sample exceeds 10%, and the Al-Si-Mg-Sc-Zr aluminum alloy powder has no obvious anisotropy, and can meet the application requirements of aerospace related fields.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Features of various aspects of embodiments of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. The following description of the embodiments is merely intended to better understand the present invention by illustrating examples thereof. The present invention is not limited to any particular arrangement or method provided below, but rather covers all product structures, any modifications, alterations, etc. of the method covered without departing from the spirit of the invention.
In the following description of the embodiments, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.
Example 1:
the weight ratio of the components is as follows:
6.92 wt% of Si, Mg: 0.68 wt%, Ti: 0.11 wt%, Sc: 0.105 wt%, Zr: 0.104 wt%, and the balance of Al and inevitable impurities.
Preparing Al-Si-Mg-Sc-Zr aluminum alloy powder with the particle size diameter of 10-150 mu m from the aluminum ingot by adopting a vacuum gas atomization process, screening to leave powder with the particle size range of 15-53 mu m, and forming by using an SLM (selective laser melting) technology to obtain a sample.
And (3) carrying out T6 heat treatment on the formed sample, keeping the temperature at 540 ℃ for 8h, carrying out water cooling at 60 ℃ and keeping the temperature at 170 ℃ for 8h, and carrying out air cooling.
Through tests, the density of a sample formed by the powder through SLM can reach more than 99%, the tensile strength of a deposited sample is 445MPa, the elongation after fracture of a heat-treated sample is 10.2%, and no obvious anisotropy exists.
Example 2:
the weight ratio of the components is as follows:
6.64 wt% of Si, Mg: 0.60 wt%, Ti: 0.15 wt%, Sc: 0.45 wt% Zr: 0.28% balance Al and unavoidable impurities.
Preparing Al-Si-Mg-Sc-Zr aluminum alloy powder with the particle size diameter of 10-150 mu m from the aluminum ingot by adopting a vacuum gas atomization process, screening to leave powder with the particle size range of 15-53 mu m, and forming by using an SLM (selective laser melting) technology to obtain a sample.
And (3) carrying out T6 heat treatment on the formed sample, keeping the temperature at 540 ℃ for 8h, carrying out water cooling at 60 ℃ and keeping the temperature at 170 ℃ for 8h, and carrying out air cooling.
Through tests, the density of a sample formed by the powder through SLM can reach more than 99%, the tensile strength of a deposition sample is 483MPa, the elongation after fracture of a sample after heat treatment is 11.3%, and no obvious anisotropy exists.
Example 3:
the weight ratio of the components is as follows:
6.61 wt% of Si, Mg: 0.66 wt%, Ti: 0.12 wt%, Sc: 0.58 wt%, Zr: 0.42% with the balance being Al and unavoidable impurities.
Preparing Al-Si-Mg-Sc-Zr aluminum alloy powder with the particle size diameter of 10-150 mu m from the aluminum ingot by adopting a vacuum gas atomization process, screening to leave powder with the particle size range of 15-53 mu m, and forming by using an SLM (selective laser melting) technology to obtain a sample.
And (3) carrying out T6 heat treatment on the formed sample, keeping the temperature at 540 ℃ for 8h, carrying out water cooling at 60 ℃ and keeping the temperature at 170 ℃ for 8h, and carrying out air cooling.
Through tests, the density of a sample formed by the powder through SLM can reach more than 99%, the tensile strength of a deposited sample is 495MPa, the elongation after fracture of a sample after heat treatment is 11.6%, and the powder has no obvious anisotropy.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (8)
1. An Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing, characterized in that the Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in percentage by mass:
si: 6.0-8.0%, Mg: 0.60-0.80%, Ti: 0.10-0.20%, Sc: 0.1-0.6%, Zr: 0.1 to 0.4%, and the balance of Al and inevitable impurities.
2. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing of claim 1, wherein said Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in mass percent:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.1%, Zr: 0.1%, and the balance of Al and inevitable impurities.
3. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing of claim 1, wherein said Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in mass percent:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.5%, Zr: 0.3%, and the balance of Al and inevitable impurities.
4. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing of claim 1, wherein said Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in mass percent:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.6%, Zr: 0.4%, and the balance of Al and inevitable impurities.
5. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing of claim 1, wherein said Al-Si-Mg-Sc-Zr aluminum alloy powder comprises the following components in mass percent:
si: 7.0%, Mg: 0.7%, Ti: 0.15%, Sc: 0.3 to 0.5%, Zr: 0.2 to 0.3%, and the balance of Al and inevitable impurities.
6. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing according to claim 1, wherein the Al-Si-Mg-Sc-Zr aluminum alloy powder has a particle size of 10 to 150 μm.
7. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing according to claim 1, wherein the Al-Si-Mg-Sc-Zr aluminum alloy powder has a particle size of 15 to 53 μm.
8. The Al-Si-Mg-Sc-Zr aluminum alloy powder for laser additive manufacturing of claim 1, wherein said Al-Si-Mg-Sc-Zr aluminum alloy powder is for laser additive manufacturing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787198A (en) * | 2021-09-16 | 2021-12-14 | 中国工程物理研究院机械制造工艺研究所 | Printing process for improving mechanical property of AlSi9Mg1ScZr formed by SLM |
| CN114082985A (en) * | 2021-11-25 | 2022-02-25 | 西北工业大学 | Sc/Zr modified high-modulus high-strength aluminum-lithium alloy and laser forming method thereof |
| CN114807793A (en) * | 2022-04-27 | 2022-07-29 | 安徽哈特三维科技有限公司 | Heat treatment process for additive manufacturing of Al-Mg-Sc alloy |
| CN115595573A (en) * | 2022-10-13 | 2023-01-13 | 中南大学（Cn） | 6000-series aluminum alloy repair material for local dry underwater laser repair and repair method |
| US11840747B1 (en) | 2022-10-21 | 2023-12-12 | Industrial Technology Research Institute | Aluminum alloy material, aluminum alloy object and method for manufacturing the same |
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| CN107695338A (en) * | 2017-09-21 | 2018-02-16 | 北京宝航新材料有限公司 | A kind of AlSi7Mg dusty materials and preparation method thereof and its application |
| JP2018184659A (en) * | 2017-04-27 | 2018-11-22 | 株式会社コイワイ | High-strength aluminum alloy laminated molding and method for producing the same |
| CN109175350A (en) * | 2018-10-30 | 2019-01-11 | 长沙新材料产业研究院有限公司 | A kind of Al-Mg-Mn-Sc-Zr Al alloy powder and preparation method thereof for increasing material manufacturing |
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2020
- 2020-09-02 CN CN202010912912.1A patent/CN112048647A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018184659A (en) * | 2017-04-27 | 2018-11-22 | 株式会社コイワイ | High-strength aluminum alloy laminated molding and method for producing the same |
| CN107695338A (en) * | 2017-09-21 | 2018-02-16 | 北京宝航新材料有限公司 | A kind of AlSi7Mg dusty materials and preparation method thereof and its application |
| CN109175350A (en) * | 2018-10-30 | 2019-01-11 | 长沙新材料产业研究院有限公司 | A kind of Al-Mg-Mn-Sc-Zr Al alloy powder and preparation method thereof for increasing material manufacturing |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787198A (en) * | 2021-09-16 | 2021-12-14 | 中国工程物理研究院机械制造工艺研究所 | Printing process for improving mechanical property of AlSi9Mg1ScZr formed by SLM |
| CN114082985A (en) * | 2021-11-25 | 2022-02-25 | 西北工业大学 | Sc/Zr modified high-modulus high-strength aluminum-lithium alloy and laser forming method thereof |
| CN114082985B (en) * | 2021-11-25 | 2022-11-04 | 西北工业大学 | Sc/Zr modified high-modulus high-strength aluminum-lithium alloy and laser forming method thereof |
| CN114807793A (en) * | 2022-04-27 | 2022-07-29 | 安徽哈特三维科技有限公司 | Heat treatment process for additive manufacturing of Al-Mg-Sc alloy |
| CN115595573A (en) * | 2022-10-13 | 2023-01-13 | 中南大学（Cn） | 6000-series aluminum alloy repair material for local dry underwater laser repair and repair method |
| US11840747B1 (en) | 2022-10-21 | 2023-12-12 | Industrial Technology Research Institute | Aluminum alloy material, aluminum alloy object and method for manufacturing the same |
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