CN117701958A - Aluminum alloy powder for additive manufacturing, aluminum alloy part and preparation method of aluminum alloy part - Google Patents
Aluminum alloy powder for additive manufacturing, aluminum alloy part and preparation method of aluminum alloy part Download PDFInfo
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- CN117701958A CN117701958A CN202311566012.6A CN202311566012A CN117701958A CN 117701958 A CN117701958 A CN 117701958A CN 202311566012 A CN202311566012 A CN 202311566012A CN 117701958 A CN117701958 A CN 117701958A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 130
- 239000000843 powder Substances 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 68
- 239000000654 additive Substances 0.000 title claims abstract description 64
- 230000000996 additive effect Effects 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 15
- 229910052706 scandium Inorganic materials 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 8
- 239000002667 nucleating agent Substances 0.000 abstract description 6
- 229910052725 zinc Inorganic materials 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000007670 refining Methods 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 4
- 229910018569 Al—Zn—Mg—Cu Inorganic materials 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 21
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000000956 alloy Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 229910000542 Sc alloy Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
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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
To overcome the prior artThe invention provides aluminum alloy powder for additive manufacturing, which is prepared from 7 xxx-series (Al-Zn-Mg-Cu) aluminum alloy and is characterized in that the aluminum alloy part is easy to generate hot crack defects and affects the mechanical properties of materials, and comprises the following components in percentage by mass: 7-13% of Zn, 2-4% of Mg, 1-3% of Cu, 1-2% of Sc, 0.3-0.8% of Ta, 0-1% of other elements and the balance of Al. Meanwhile, the invention also discloses an aluminum alloy part comprising the aluminum alloy powder and a preparation method thereof. Ta and Sc are added into the aluminum alloy powder, and are mixed with Zn, mg, cu and Al to generate the efficient heterogeneous nucleating agent Al 3 (Sc，Ta)，Al 3 Sc is L1 2 The crystal form is stable without other isomerides; on the other hand, ta can also form L1 during the cooling process of a high-temperature molten pool 2 Crystalline Al 3 Ta thereby refining grains; in addition, the Sc and Ta have larger shape limiting factor values in the aluminum alloy, and can realize grain refinement in a synergistic way, eliminate cracks and improve the mechanical properties of the aluminum alloy piece.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing materials, and particularly relates to aluminum alloy powder for additive manufacturing, an aluminum alloy part and a preparation method thereof.
Background
The high-strength aluminum alloy has the advantages of high specific strength, low density, low cost, good corrosion resistance and the like, can be used as a light high-strength structural material, and is widely applied to civil and military fields such as automobiles, ships, aerospace and the like. The 7xxx series (Al-Zn-Mg-Cu) aluminum alloy is one of high-strength aluminum alloys, however, the 7xxx high-strength aluminum alloy is affected by larger residual stress in the additive manufacturing process based on high-energy beam due to a very wide solidification temperature range, and hot cracks are very easy to generate, so that the formability and mechanical properties of the material are drastically reduced. In addition, it is often difficult to obtain crack-free and excellent (99%) compactness parts by adjusting the process parameters during printing. Therefore, there is an urgent need to develop crack-free 7 xxx-series high-strength aluminum alloy materials for additive manufacturing.
Disclosure of Invention
Aiming at the problems that in the prior art, an aluminum alloy piece prepared by using a 7xxx aluminum alloy is easy to generate heat crack defects and influence the mechanical properties of materials, the aluminum alloy powder for additive manufacturing, the aluminum alloy piece and the preparation method thereof are provided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
on one hand, the invention provides aluminum alloy powder for additive manufacturing, which comprises the following components in percentage by mass:
7-13% of Zn, 2-4% of Mg, 1-3% of Cu, 1-2% of Sc, 0.3-0.8% of Ta, 0-1% of other elements and the balance of Al.
Optionally, the content of Zn is 9-11%, the content of Mg is 2.5-4%, the content of Cu is 1.5-3%, the content of Sc is 1.2-1.8%, the content of Ta is 0.4-0.6%, the content of other elements is 0-0.5%, and the balance is Al.
Optionally, the mass ratio of Sc to Ta is 2:1-3:1.
Optionally, the granularity of the aluminum alloy powder for additive manufacturing is 10-100 μm.
On the other hand, the invention provides a preparation method of the aluminum alloy powder for additive manufacturing, which comprises the following steps:
zn, mg, cu, sc, ta and Al are fully mixed to obtain aluminum alloy powder for additive manufacturing;
after mixing, the aluminum alloy powder for additive manufacturing is placed in a vacuum environment for drying.
On the other hand, the aluminum alloy part provided by the invention is prepared from the aluminum alloy powder for additive manufacturing.
Optionally, the preparation method of the aluminum alloy piece comprises the following operation steps:
and placing the aluminum alloy powder into additive manufacturing equipment, and performing 3D printing and forming to obtain an aluminum alloy piece.
Optionally, the additive manufacturing is laser additive manufacturing.
Optionally, the laser energy density of the laser additive manufacturing is 60-120J/mm 3 。
Optionally, the laser power of the laser additive manufacturing is 300-400W, and the laser scanning speed is 100-1500 mm/s.
According to the aluminum alloy powder provided by the invention, ta and Sc are added, the Sc and the Ta are mixed with Zn, mg, cu and Al, and chemical reaction occurs in the mixing process, so that an efficient heterogeneous nucleating agent Al is generated 3 (Sc, ta) facilitates nucleation of primary aluminum, al in an endogenous nucleating agent for additive manufacturing of aluminum alloy materials 3 Sc is L1 2 The crystal form is stable without other isomerides, on the other hand, the Ta can form L1 in the process of rapidly cooling a high-temperature molten pool 2 Crystalline Al 3 Ta thereby refining grains; in addition, the Sc and the Ta have larger shape limiting factor values in the aluminum alloy, and can effectively limit the growth of grains in the growth process of the aluminum alloy grains to realize grain refinement, thereby being beneficial to eliminating cracks and improving the mechanical property of the aluminum alloy piece.
Drawings
FIG. 1 is a diagram of the microscopic morphology of aluminum alloy powder provided by the invention;
fig. 2 is a microscopic morphology diagram of the aluminum alloy part provided by the invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, "additive manufacturing" refers to "a process of joining layers of material together according to 3D model data to make an object". The aluminum alloys described herein may be manufactured by any suitable additive manufacturing technique such as binder jetting, directional energy deposition, material extrusion, material jetting, powder bed melting or lamination, and the like. In one embodiment, the additive manufacturing process includes depositing successive layers of one or more powders, and then selectively melting and/or sintering the powders to form the aluminum alloy product layer by layer. In one embodiment, the additive manufacturing process uses one or more of Selective Laser Sintering (SLS), selective Laser Melting (SLM), and Electron Beam Melting (EBM), among others.
The embodiment of the invention provides aluminum alloy powder for additive manufacturing, which comprises the following components in percentage by mass:
7-13% of Zn, 2-4% of Mg, 1-3% of Cu, 1-2% of Sc, 0.3-0.8% of Ta, 0-1% of other elements and the balance of Al.
It should be noted that the 7xxx aluminum alloy is one of aluminum alloys, belongs to a super hard aluminum alloy, has good mechanical properties and processability, and can be applied to the fields of aerospace, mechanical equipment and the like, but most of the 7xxx aluminum alloys prepared by the existing method for preparing the 7xxx aluminum alloy have cracks, so that the mechanical properties of the 7xxx aluminum alloy are seriously affected, and the application of the 7xxx aluminum alloy is limited. In addition, mgZn is mainly present in 7 xxx-series aluminum alloys 2 、Al 2 Cu and Al 2 The strengthening phases such as CuMg and the like can be evenly dispersed and separated out in additive manufacturing and subsequent heat treatment, so that the mechanical properties of the aluminum alloy metal piece are promoted.
Specifically, ta and Sc are added into aluminum alloy powder, the Sc and the Ta are mixed with Zn, mg, cu and Al, and chemical reaction occurs in the mixing process, so that a high-efficiency heterogeneous nucleating agent Al is generated 3 (Sc, ta) facilitates nucleation of primary aluminum, al in an endogenous nucleating agent for additive manufacturing of aluminum alloy materials 3 Sc is L1 2 The crystal form has no other isomer, and has good stability, on the other hand, the Ta can form L1 in the process of rapidly cooling a high-temperature molten pool 2 Crystalline Al 3 Ta thereby refining grains; in addition, the Sc and the Ta have larger shape limiting factor values in the aluminum alloy, and can effectively limit the growth of grains in the growth process of the aluminum alloy grains to realize the grainGrain refinement is further beneficial to eliminating cracks so as to improve the mechanical properties of the aluminum alloy piece.
In some embodiments, the Zn content is 9-11%, the Mg content is 2.5-4%, the Cu content is 1.5-3%, the Sc content is 1.2-1.8%, the Ta content is 0.4-0.6%, the other elements are 0-0.5%, and the balance is Al.
In some embodiments, the mass ratio of Sc to Ta is 2:1 to 3:1.
Sc as an alloying element can combine in aluminum alloys to form supersaturated Al-Sc alloys, forming L1 during aging 2 Nanoscale Al 3 Sc precipitated phase, al 3 Sc particles are the most stable ones, and have remarkable strengthening and recrystallization inhibiting effects;
ta can also form L1 in the process of rapid cooling of a high-temperature molten pool for aluminum alloy grain refinement 2 Crystalline Al 3 Ta thereby refining grains; in addition, the shape limiting factor values of Ta and Sc in the aluminum alloy are larger, the growth of grains can be effectively limited in the growth process of the grains of the aluminum alloy, the grain refinement is realized, cracks are restrained, and the mechanical property of the aluminum alloy piece is further improved.
In some embodiments, the additive manufacturing aluminum alloy powders each have a particle size of 10 to 100 μm.
In the additive manufacturing process, the requirement of the metal powder on the particle size has the characteristics of good sphericity, fine particle size, narrow particle size distribution and the like; in the preparation process of the metal powder, powder particles can be in different shapes such as spheres, nearly spheres, polygons, porous sponges, dendrites and the like according to different preparation methods, and the particle shape of the powder directly influences the fluidity and the density of the powder, so that the performance of the prepared metal part is influenced.
Specifically, in a preferred embodiment, the particle size of the aluminum alloy powder for additive manufacturing is 15 to 53 μm.
Another embodiment of the present invention provides a method for preparing the aluminum alloy powder for additive manufacturing as described above, including the steps of:
zn, mg, cu, sc, ta and Al are fully mixed to obtain aluminum alloy powder for additive manufacturing;
after mixing, the aluminum alloy powder for additive manufacturing is placed in a vacuum environment for drying.
The invention further provides an aluminum alloy part prepared from the aluminum alloy powder for additive manufacturing.
In some embodiments, the method for preparing the aluminum alloy part comprises the following operation steps:
and placing the aluminum alloy powder into additive manufacturing equipment, and performing 3D printing and forming to obtain an aluminum alloy piece.
In some embodiments, the additive manufacturing is laser additive manufacturing.
In some embodiments, the laser energy density of the laser additive manufacturing is 60-120J/mm 3 。
Specifically, in a preferred embodiment, the laser energy density of the laser additive manufacturing is 65-80J/mm 3 ；
The laser energy density refers to the energy density of laser acting in powder and a molten pool in unit time; the melting state of the metal powder for the alloy is directly determined by the laser energy density, and the performance of the alloy piece is finally affected; because aluminum alloys have high reflectivity and high thermal conductivity, laser light is required to have higher energy density to induce pinhole formation, and because the energy density threshold is essentially controlled by the alloy composition, the laser power can be selected to ensure proper heat input based on the alloy composition control process parameters.
In some embodiments, the laser additive manufacturing laser power is 300-400W and the laser scanning rate is 100-1500 mm/s.
Specifically, in a preferred embodiment, the laser power of the laser additive manufacturing is 370W, and the laser scanning rate is 1260mm/s.
The laser power and the scanning speed are also process parameters influencing the performance of the aluminum alloy metal piece, and optimizing and adjusting the process parameters can improve the compactness, microstructure and mechanical performance of the metal piece; when the laser power is increased, the tensile strength of the formed aluminum alloy metal piece is enhanced, so that the mechanical property of the aluminum alloy metal piece is improved, and the generation of thermal cracks is reduced.
The invention is further illustrated by the following examples.
Example 1
The embodiment is used for explaining the aluminum alloy powder for additive manufacturing, the aluminum alloy part and the preparation method thereof, and comprises the following operation steps:
7xxx aluminum alloy powders:
the mass fractions of the components are as follows: 9.2% of Zn, 2.9% of Mg, 2.1% of Cu, 1.2% of Sc, 0.4% of Ta, 0.4% of other elements and the balance of Al, wherein the granularity of the aluminum alloy powder is 10-50 mu m;
drying the powder in a vacuum drying oven, placing in a selective laser melting forming device, and scanning with laser power of 370W, 1260mm/s and scanning speed of 65J/mm 3 And (3) performing laser energy density printing forming to obtain the aluminum alloy piece.
Example 2
The embodiment is used for explaining the aluminum alloy powder for additive manufacturing, the aluminum alloy part and the preparation method thereof disclosed by the invention, and comprises most of operations in embodiment 1, wherein the differences are as follows:
7xxx aluminum alloy powders:
the mass fractions of the components are as follows: 11.8% of Zn, 3.5% of Mg, 2.6% of Cu, 1.2% of Sc, 0.4% of Ta, 0.3% of other elements and the balance of Al.
Example 3
The embodiment is used for explaining the aluminum alloy powder for additive manufacturing, the aluminum alloy part and the preparation method thereof disclosed by the invention, and comprises most of operations in embodiment 1, wherein the differences are as follows:
7xxx aluminum alloy powders:
the mass fractions of the components are as follows: 9.2% of Zn, 2.9% of Mg, 2.1% of Cu, 1.6% of Sc, 0.6% of Ta, 0.5% of other elements and the balance of Al.
Example 4
The embodiment is used for explaining the aluminum alloy powder for additive manufacturing, the aluminum alloy part and the preparation method thereof disclosed by the invention, and comprises most of operations in embodiment 1, wherein the differences are as follows:
the particle size of each component of the aluminum alloy powder in the embodiment is 50-100 mu m.
Comparative example 1
This comparative example is used for comparative illustration of an aluminum alloy powder for additive manufacturing, an aluminum alloy part and a preparation method thereof disclosed in the present invention, including most of the operations in example 1, which are different in that:
sc and Ta are not added to the aluminum alloy powder of this embodiment.
Comparative example 2
This comparative example is used for comparative illustration of an aluminum alloy powder for additive manufacturing, an aluminum alloy part and a preparation method thereof disclosed in the present invention, including most of the operations in example 1, which are different in that:
no Sc is added to the 7xxx aluminum alloy powders of this example.
Comparative example 3
This comparative example is used for comparative illustration of an aluminum alloy powder for additive manufacturing, an aluminum alloy part and a preparation method thereof disclosed in the present invention, including most of the operations in example 1, which are different in that:
ta is not added to the 7xxx aluminum alloy powders of this example.
Performance testing
1. Microscopic observations were made on the aluminum alloy powder provided in example 1 and the prepared aluminum alloy piece, and the obtained microscopic photographs are shown in fig. 1 and 2.
As shown in the microscopic morphology of the aluminum alloy powder of fig. 1 7xxx, the powder prepared in example 1 has high sphericity, less adsorbed satellite powder, no obvious agglomeration and good fluidity, and meets the requirements of additive manufacturing powder;
as can be seen from the microscopic morphology diagram of the aluminum alloy part in FIG. 2, the aluminum alloy prepared from the additive manufacturing powder provided by the invention has fine grains, and Al easy to heteronuclear is present in the grains 3 The (Sc, ta) particles (shown by arrows) have no obvious cracks and higher density.
2. The mechanical properties of the aluminum alloys prepared in examples 1 to 4 and comparative examples 1 to 3 obtained by the above preparation were tested according to GB/T228-2010:
the test results obtained are filled in Table 1.
TABLE 1
| Test set | Density (%) | Hardness (HV) |
| Example 1 | 99.82 | 135.2±3.7 |
| Example 2 | 99.91 | 141.2±3.1 |
| Example 3 | 99.84 | 138.49±4.3 |
| Example 4 | 99.54 | 132.5±6.4 |
| Comparative example 1 | 98.94 | 104.5±3.6 |
| Comparative example 2 | 99.26 | 114.3±6.5 |
| Comparative example 3 | 99.33 | 127.8±4.3 |
As can be seen from the test results in Table 1, the density and hardness test data of examples 1-3 are superior to those of comparative examples 1-3, the effect of example 2 is optimal, the density reaches 99.91, and the hardness reaches 141.2+ -3.1 HV; compared with the embodiment 1 and the embodiment 3, the embodiment 2 increases the proportion of Zn, mg and Cu in the aluminum alloy powder on the basis of consistent addition of Ta and Sc in the embodiment 1, is beneficial to improving the dispersion precipitation of the strengthening phase, and further improves the overall strength of the aluminum alloy on the basis of exerting the advantages of Ta and Sc; compared with the embodiment 1, the embodiment 3 improves the addition amount of Ta and Sc, so that the compactness and the hardness are both higher than those of the embodiment 1; in example 4, since the particle sizes of the components of the aluminum alloy powder are relatively large, the improvement of hardness and compactness is affected in the specific preparation process.
Example 1 compared to comparative example 1, since Sc and Ta are not added in comparative example 1, the hardness of comparative example 1 is significantly lower than that of example 1 in specific test, sc is not added in comparative example 2 compared to comparative examples 2 to 3, ta is not added in comparative example 3, and the hardness and density of comparative examples 2 to 3 are lower than those of example 1 in specific test results; namely, ta and Sc are added into the aluminum alloy powder and mixed with Zn, mg, cu and Al to generate the efficient heterogeneous nucleating agent Al 3 (Sc，Ta)，Al 3 Sc is L1 2 The crystal form is stable without other isomerides; on the other hand, ta can also form L1 during the cooling process of a high-temperature molten pool 2 Crystalline Al 3 Ta thereby refining grains; in addition, the Sc and Ta have larger shape limiting factor values in the aluminum alloy, and can realize grain refinement in a synergistic way, eliminate cracks and improve the mechanical property of the aluminum alloy piece; in addition, the proportion of Zn, mg and Cu in the aluminum alloy powder is increased, so that the dispersion precipitation of the strengthening phase is improved, and the effect of improving the mechanical property of the aluminum alloy metal piece is also achieved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The aluminum alloy powder for additive manufacturing is characterized by comprising the following components in percentage by mass:
7-13% of Zn, 2-4% of Mg, 1-3% of Cu, 1-2% of Sc, 0.3-0.8% of Ta, 0-1% of other elements and the balance of Al.
2. The aluminum alloy powder for additive manufacturing according to claim 1, wherein the content of Zn is 9 to 11%, the content of Mg is 2.5 to 4%, the content of Cu is 1.5 to 3%, the content of Sc is 1.2 to 1.8%, the content of Ta is 0.4 to 0.6%, the content of other elements is 0 to 0.5%, and the balance is Al.
3. The aluminum alloy powder for additive manufacturing according to claim 1, wherein the mass ratio of Sc to Ta is 2:1 to 3:1.
4. The aluminum alloy powder for additive manufacturing according to claim 1, wherein the aluminum alloy powder for additive manufacturing has particle sizes of 10 to 100 μm.
5. The method for producing an aluminum alloy powder for additive manufacturing according to any one of claims 1 to 4, comprising the steps of:
zn, mg, cu, sc, ta and Al are fully mixed to obtain aluminum alloy powder for additive manufacturing;
after mixing, the aluminum alloy powder for additive manufacturing is placed in a vacuum environment for drying.
6. An aluminum alloy article, characterized by being produced from the aluminum alloy powder for additive manufacturing according to any one of claims 1 to 4.
7. The method for producing an aluminum alloy article according to claim 6, comprising the steps of:
and placing the aluminum alloy powder into additive manufacturing equipment, and performing 3D printing and forming to obtain an aluminum alloy piece.
8. The method of claim 7, wherein the additive manufacturing is laser additive manufacturing.
9. The method for manufacturing an aluminum alloy part according to claim 8, wherein the laser energy density of the laser additive manufacturing is 60-120J/mm 3 。
10. The method for manufacturing an aluminum alloy part according to claim 8, wherein the laser power of the laser additive manufacturing is 300-400W, and the laser scanning rate is 100-1500 mm/s.
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| CN202311566012.6A CN117701958A (en) | 2023-11-22 | 2023-11-22 | Aluminum alloy powder for additive manufacturing, aluminum alloy part and preparation method of aluminum alloy part |
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| CN202311566012.6A CN117701958A (en) | 2023-11-22 | 2023-11-22 | Aluminum alloy powder for additive manufacturing, aluminum alloy part and preparation method of aluminum alloy part |
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