CN116287913A - Microelement modified aluminum lithium alloy powder for additive manufacturing and preparation method thereof - Google Patents
Microelement modified aluminum lithium alloy powder for additive manufacturing and preparation method thereof Download PDFInfo
- Publication number
- CN116287913A CN116287913A CN202310094166.3A CN202310094166A CN116287913A CN 116287913 A CN116287913 A CN 116287913A CN 202310094166 A CN202310094166 A CN 202310094166A CN 116287913 A CN116287913 A CN 116287913A
- Authority
- CN
- China
- Prior art keywords
- powder
- percent
- lithium alloy
- additive manufacturing
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 104
- 239000001989 lithium alloy Substances 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 239000000654 additive Substances 0.000 title claims abstract description 43
- 230000000996 additive effect Effects 0.000 title claims abstract description 43
- FCVHBUFELUXTLR-UHFFFAOYSA-N [Li].[AlH3] Chemical class [Li].[AlH3] FCVHBUFELUXTLR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 37
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 36
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 33
- 239000011573 trace mineral Substances 0.000 claims abstract description 33
- 238000003723 Smelting Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 8
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 7
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 5
- 229910001148 Al-Li alloy Inorganic materials 0.000 claims description 29
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 claims description 29
- 230000006698 induction Effects 0.000 claims description 23
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 22
- 238000000889 atomisation Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 10
- 230000004927 fusion Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 5
- 238000004227 thermal cracking Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009689 gas atomisation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- 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]
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0836—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with electric or magnetic field or induction
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0844—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid in controlled atmosphere
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0896—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid particle transport, separation: process and apparatus
-
- 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
Abstract
The invention discloses trace element modified aluminum lithium alloy powder for additive manufacturing and a preparation method thereof. The powder material comprises Cu, li, mg, ag, mn, zn, zr, ti and other alloy elements, and can also contain one or more of rare earth elements Sc, ce and Er. The preparation method comprises the steps of batching, smelting, rod making, powder sieving and the like. The trace element modified aluminum-lithium alloy powder for additive manufacturing and the preparation method thereof have the characteristics of high density, less serious metallurgical defects (shrinkage porosity, shrinkage cavity and thermal cracking), excellent tensile strength and elongation percentage and the like.
Description
Technical Field
The invention belongs to the field of aluminum-lithium alloy materials, and particularly relates to trace element modified aluminum-lithium alloy powder for additive manufacturing and a preparation method thereof.
Background
With the development of important engineering in the aerospace fields such as large airliners, manned aerospace, deep space exploration and the like, the demand for lightweight materials is increasing, wherein the update iteration of lightweight high-strength alloy materials and preparation technology thereof is particularly important.
Lithium is the lightest metal element, and each 1% of lithium is added into the aluminum alloy, so that the alloy density can be reduced by 3% and the elastic modulus of the alloy can be improved by 6%, and the strength of the alloy can be compared favorably with that of the traditional high-strength aluminum alloy. However, the commercial aluminum-lithium alloy is almost all deformed aluminum alloy at present, and mainly adopts the combination of traditional processing technologies such as casting, forging, rolling, extrusion and the like to produce aluminum-lithium alloy components, so that the whole production flow has the characteristics of multiple processing procedures, long production period, difficulty in adapting to the characteristics of multiple production types, small quantity and complex shape of components in the aerospace field, and difficulty in meeting the requirements of multiple adjustment and rapid iteration of component parameters in the research and development process.
In recent years, the application of metal additive manufacturing technology in industrial production is gradually increased, the inherent characteristics of the metal additive manufacturing technology enable the metal additive manufacturing technology to avoid a great amount of material loss in the traditional production process, meanwhile, the metal additive manufacturing technology caters to the development trend of complicating component design, and the metal additive manufacturing technology has great advantages which are difficult to compare with the traditional forming technology in the aspect of small-batch complex component forming. However, the current main commercial aluminum-lithium alloy is easy to have serious metallurgical defects such as shrinkage porosity, shrinkage cavity, thermal cracking and the like in the additive manufacturing process, and is difficult to meet the requirements of the aerospace field on high forming quality and high reliability of the components.
Disclosure of Invention
Aiming at the problem that the existing commercial aluminum-lithium alloy is easy to have serious metallurgical defects such as shrinkage porosity, shrinkage cavity, thermal cracking and the like in the metal additive manufacturing process, the invention aims to provide trace element modified aluminum-lithium alloy powder for additive manufacturing and a preparation method thereof. And (3) obtaining the aluminum-lithium alloy with excellent mechanical properties by optimizing the types and the content of alloy elements.
The technical scheme of the invention is as follows: the trace element modified aluminum lithium alloy powder for additive manufacturing at least comprises the following trace elements in percentage by weight except Al: 3.0 to 5.0wt percent of Cu, 0.5 to 2.5wt percent of Li, 0.2 to 1.5wt percent of Mg, 0.6 to 1.5wt percent of Ag, 0.05 to 0.5wt percent of Mn, 0.05 to 0.4wt percent of Zn, 0.01 to 0.2wt percent of Zr, 0.01 to 02wt percent of Ti and 0 to 0.5wt percent of rare earth element.
The trace elements comprise the following components in percentage by weight: 3.55 to 4.20 weight percent of Cu, 0.80 to 1.50 weight percent of Li, 0.30 to 0.74 weight percent of Mg, 0.60 to 1.25 weight percent of Ag, 0.05 to 0.20 weight percent of Mn, 0.05 to 0.25 weight percent of Zn, 0.10 to 0.18 weight percent of Zr and 0.10 to 0.2 weight percent of Ti.
The impurity element content is less than 0.03wt% of Fe, less than 0.03wt% of Si, less than 0.0005wt% of Na, less than 0.0005wt% of Ca and less than 0.0001wt% of H.
The rare earth element is one or more of Sc, ce and Er.
The preparation method of the trace element modified aluminum lithium alloy powder for additive manufacturing comprises the following steps of:
step 1, batching: preparing a pure metal raw material or a master alloy raw material according to the weight percentage of each component element in the aluminum lithium alloy powder material for batching;
and 2, smelting and rod making: placing the ingredients into vacuum induction smelting equipment for smelting and casting to prepare a prefabricated alloy rod;
and 3, pulverizing: atomizing the prefabricated alloy rod into powder by using crucible-free electrode induction smelting vacuum air atomization (EIGA) powder making equipment;
and 4, sieving: and screening out product powder in an argon environment by using ultrasonic vibration screen equipment, and packaging the product powder in a powder bottle.
The vacuum induction smelting equipment in the step 2 is at least 5Kg grade, the used shielding gas is argon, the working vacuum degree is less than or equal to 0.4Pa, and the pressure rise rate is less than or equal to 1Pa/h; the vacuum atomization powder making equipment for crucible-free electrode induction smelting in the step 3 is at least 5Kg grade, the used shielding gas is argon, the working oxygen content is less than or equal to 1000ppm, the working vacuum degree is less than or equal to 0.3Pa, the pressure rise rate is less than or equal to 1Pa/h, and the flow rate of atomization gas is more than or equal to 1200m 3 And/h, the atomization rate is more than or equal to 90 percent.
The particle size range of the product powder screened in the step 4 is 15-50 mu m.
The trace element modified aluminum lithium alloy powder for additive manufacturing is applied to the preparation technology of laser powder bed fusion forming components.
The beneficial effects are that:
(1) Compared with the existing main commercial aluminum lithium alloy, the trace element modified aluminum lithium alloy powder for additive manufacturing adjusts the addition amount of various elements, and can improve the formability and mechanical properties of the alloy; the trace element modified aluminum lithium alloy powder for additive manufacturing has higher Ag content, and Ag can be strongly interacted with Mg to improve the alloy strength and the high-temperature heat resistance of the alloy; rare earth elements (such as Sc, ce, er and the like) can be optionally added into the trace element modified aluminum lithium alloy powder for additive manufacturing, so that the comprehensive performance of the alloy can be further improved.
(2) Different from the traditional powder mechanical mixing powder process or crucible vacuum induction melting atomization (VIGA) powder process, the microelement modified aluminum lithium alloy powder for additive manufacturing adopts a crucible-free electrode induction melting vacuum gas atomization process to prepare powder, the particle size of the powder is controllable, the sphericity of the prepared aluminum lithium alloy powder is higher, satellite particles are fewer, and meanwhile, element pollution in a crucible in the powder preparation process can be avoided, so that the impurity content of the alloy powder is reduced. In addition, compared with a plasma rotary electrode method (PREP), the crucible-free electrode induction smelting vacuum gas atomization process has the advantages of saving materials, low cost and the like.
(3) Compared with the prior commercial aluminum lithium alloy, the aluminum lithium alloy component manufactured by adopting the trace element modified aluminum lithium alloy powder for additive manufacturing and adopting the metal additive manufacturing process has fewer metallurgical defects such as shrinkage porosity, shrinkage cavity, thermal cracking and the like and higher compactness, tensile strength and elongation.
Drawings
FIG. 1 is a powder particle morphology image of trace element modified aluminum lithium alloy powder for additive manufacturing, which is prepared by the trace element modified aluminum lithium alloy powder for additive manufacturing preparation method of the invention;
FIG. 2 is a microstructure image of example 1;
FIG. 3 is a microstructure image of example 2;
FIG. 4 is a microstructure image of example 3;
FIG. 5 is a microstructure image of example 4;
fig. 6 is a microstructure image of comparative example 2.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
The first aspect of the invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following main components in percentage by weight: 3.0 to 5.0 weight percent of Cu, 0.5 to 2.5 weight percent of Li, 0.2 to 1.5 weight percent of Mg, 0.6 to 1.5 weight percent of Ag, 0.05 to 0.5 weight percent of Mn, 0.05 to 0.4 weight percent of Zn, 0.01 to 0.2 weight percent of Zr, 0.01 to 02 weight percent of Ti and the balance of Al.
Preferably, the Cu content of the aluminum-lithium alloy powder material is 3.55-4.20wt% in terms of weight percent. Cu can improve alloy strength and toughness.
Preferably, the Li content of the aluminum lithium alloy powder material is 0.80-1.50wt percent. Li can significantly reduce alloy density and increase elastic modulus.
Preferably, the Mg content in the aluminum lithium alloy powder material is 0.30-0.74wt%. Mg can increase tensile strength and yield strength.
Preferably, the Ag content of the aluminum lithium alloy powder material is 0.60-1.25wt%. Ag can have strong interaction with Mg to promote precipitation of various strengthening phases; ag can promote the formation of phase which hinders dislocation movement, and can greatly improve the mechanical property and high-temperature heat resistance of the aluminum-lithium alloy.
Preferably, the Mn content of the aluminum lithium alloy powder material is 0.05-0.20wt percent in weight percent. Mn can reduce alloy anisotropy and improve alloy strength.
Preferably, the Zn content in the aluminum lithium alloy powder material is 0.05-0.25wt percent. Zn can improve the strength of the alloy.
Preferably, the Zr content in the aluminum lithium alloy powder material is 0.10-0.18wt percent. Zr can reduce the stress corrosion tendency and quench sensitivity of the alloy.
Preferably, the Ti content of the aluminum lithium alloy powder material is 0.10-0.2wt percent. Ti can refine grains and improve the comprehensive performance of the alloy.
Preferably, the impurity element content of the aluminum lithium alloy powder material is less than 0.03wt% of Fe, less than 0.03wt% of Si, less than 0.0005wt% of Na, less than 0.0005wt% of Ca and less than 0.0001wt% of H.
Preferably, the aluminum lithium alloy powder material also can contain one or more of rare earth elements Sc, ce and Er, and the total content of the rare earth elements Sc, ce and Er is 0-0.5wt percent. Sc, ce and Er can refine grains, inhibit recrystallization, weaken grain boundary weakening caused by impurity elements, improve plasticity, strength, fracture toughness and corrosion resistance of the alloy, and improve comprehensive performance of the alloy.
The second aspect of the invention provides a method for preparing trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following steps:
step 1, batching: preparing a pure metal raw material or a master alloy raw material according to the weight percentage of each component element in the aluminum lithium alloy powder material for batching;
and 2, smelting and rod making: placing the ingredients into vacuum induction smelting equipment for smelting and casting to prepare a prefabricated alloy rod;
and 3, pulverizing: the prefabricated alloy rod is atomized and pulverized by using crucible-free electrode induction melting vacuum air atomization (EIGA) pulverizing equipment.
And 4, sieving: screening out powder with particle size of 15-100 μm in argon atmosphere with ultrasonic vibration sieve, and packaging in powder bottle.
Preferably, the vacuum induction smelting equipment in the step 2 is at least 5Kg grade, the used shielding gas is argon, the working vacuum degree is less than or equal to 0.4Pa, and the pressure rise rate is less than or equal to 1Pa/h.
Preferably, in the step 3, the crucible-free electrode induction smelting vacuum air atomization powder making equipmentAt least 5Kg, the protective gas is argon, the working oxygen content is less than or equal to 1000ppm, the working vacuum degree is less than or equal to 0.3Pa, the pressure rise rate is less than or equal to 1Pa/h, and the atomizing gas flow is more than or equal to 1200m 3 And/h, the atomization rate is more than or equal to 90 percent.
Preferably, the particle size of the powder screened in the step 4 is 15-50 μm.
The third aspect of the invention provides a laser powder bed melting forming aluminum-lithium alloy member, the trace element modified aluminum-lithium alloy powder for additive manufacturing obtained by the preparation method is formed by adopting a laser powder bed melting forming technology and is prepared by proper heat treatment, and the aluminum-lithium alloy member has high compactness, less serious metallurgical defects such as shrinkage porosity, shrinkage cavity, thermal cracking and the like, and also has excellent tensile strength and elongation.
Example 1
The embodiment 1 of the invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following main components in percentage by weight: 4.00wt% of Cu, 1.00wt% of Li, 0.52wt% of Mg, 0.65wt% of Ag, 0.06wt% of Mn, 0.06wt% of Zn, 0.15wt% of Zr, 0.15wt% of Ti, and the balance of Al and impurities.
The embodiment also provides a preparation method of trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following steps:
step 1, batching: preparing a pure metal raw material or a master alloy raw material according to the weight percentage of each component element in the aluminum lithium alloy powder material for batching;
and 2, smelting and rod making: placing the ingredients into vacuum induction smelting equipment for smelting and casting to prepare a prefabricated alloy rod;
wherein, the vacuum induction smelting equipment is of 5Kg grade, the used shielding gas is argon, the working vacuum degree is 0.4Pa, and the pressure rise is 1Pa/h.
And 3, pulverizing: the prefabricated alloy rod is atomized and pulverized by using crucible-free electrode induction melting vacuum air atomization (EIGA) pulverizing equipment.
Wherein, the vacuum atomization powder making equipment for crucible-free electrode induction smelting is 5Kg grade, the used protective gas is argon, and the working containsOxygen content 1000ppm, working vacuum degree 0.29Pa, pressure rise rate 1Pa/h, atomizing gas flow rate 1500m 3 And/h, the atomization rate is 92%.
And 4, sieving: screening out powder with particle size of 15-50 μm in argon atmosphere with ultrasonic vibration sieve, and packaging in powder bottle.
The embodiment also provides a laser powder bed fusion forming member, and the preparation method comprises the following steps:
the microelement-modified aluminum lithium alloy powder for additive manufacturing, which is prepared by the microelement-modified aluminum lithium alloy powder preparation method for additive manufacturing, is dried in a vacuum drying oven at 90 ℃ for 8 hours. After drying treatment, the material is formed by adopting a laser powder bed melting forming technology, and the forming technological parameters are as follows: the laser power is 200W, the scanning speed is 100mm/s, the scanning distance is 90 μm, and the scanning layer thickness is 50 μm. And (5) melting and forming by a laser powder bed, and then performing T8 heat treatment to obtain the formed piece.
Example 2
The embodiment 2 of the invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following main components in percentage by weight: 4.00wt% of Cu, 1.00wt% of Li, 0.52wt% of Mg, 0.65wt% of Ag, 0.06wt% of Mn, 0.06wt% of Zn, 0.15wt% of Zr, 0.15wt% of Ti, 0.06wt% of Sc, and the balance of Al and impurities. The preparation method of the alloy powder is the same as in example 1.
This example also provides a laser powder bed fusion formed part, the part being prepared in the same manner as in example 1.
Example 3
The embodiment 3 of the invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following main components in percentage by weight: 4.00wt% of Cu, 1.00wt% of Li, 0.52wt% of Mg, 0.65wt% of Ag, 0.06wt% of Mn, 0.06wt% of Zn, 0.15wt% of Zr, 0.15wt% of Ti, 0.06wt% of Sc, 0.04wt% of Ce, and the balance of Al and impurities. The preparation method of the alloy powder is the same as in example 1.
This example also provides a laser powder bed fusion formed part, the part being prepared in the same manner as in example 1.
Example 4
The embodiment 4 of the invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises the following main components in percentage by weight: 4.00wt% of Cu, 1.00wt% of Li, 0.52wt% of Mg, 0.65wt% of Ag, 0.06wt% of Mn, 0.06wt% of Zn, 0.15wt% of Zr, 0.15wt% of Ti, 0.06wt% of Sc, 0.04wt% of Ce, 0.05wt% of Er, and the balance of Al and impurities. The preparation method of the alloy powder is the same as in example 1.
This example also provides a laser powder bed fusion formed part, the part being prepared in the same manner as in example 1.
Comparative example 1
The invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which has the same composition as that of the embodiment 1, and the preparation method of the alloy powder is approximately the same as that of the embodiment 1, and the difference is that: in this comparative example, a crucible vacuum induction melting and atomizing (VIGA) powder mill was used instead of a crucible-less electrode induction melting and vacuum air atomizing (EIGA) powder mill, i.e., a preform was atomized and pulverized using the crucible vacuum induction melting and atomizing (VIGA) powder mill in preparation method step 5.
Wherein, the crucible vacuum induction melting atomization powder making equipment is of 5Kg grade, the used shielding gas is argon, the working oxygen content is 1000ppm, the working vacuum degree is 0.29Pa, the pressure rise rate is 1Pa/h, the atomization gas flow is 1500m3/h, and the atomization rate is 92%.
Comparative example 2
Comparative example 2 of the present invention provides a laser powder bed fusion formed member of material 2195 Aluminum lithium alloy (see 2195 (2195-T8) Aluminum:: makeltfrom. Com) prepared in the same manner as in example 1.
Comparative example 3
The invention provides trace element modified aluminum lithium alloy powder for additive manufacturing, which comprises 4.00wt% of Cu, 1.00wt% of Li, 0.52wt% of Mg, 0.06wt% of Mn, 0.06wt% of Zn, 0.15wt% of Zr, 0.15wt% of Ti, 0.06wt% of Sc, 0.04wt% of Ce, 0.05wt% of Er, and the balance of Al and impurities, wherein the main composition difference from the aluminum lithium alloy powder material in the embodiment 4 of the invention is only the addition amount of trace element Ag. The preparation method of the alloy powder is the same as in example 1.
This comparative example also provides a laser powder bed fusion formed member prepared in the same manner as in example 1.
The properties of the trace element modified aluminum lithium alloy powders for additive manufacturing prepared in comparative example 1 and example 1 are shown in Table 1 below
TABLE 1
The laser powder bed melt formed part properties prepared in comparative example 2, comparative example 3 and examples 1-4 are shown in table 2 below:
TABLE 2
Claims (8)
1. The microelement modified aluminum lithium alloy powder for additive manufacturing is characterized by comprising the following microelements in percentage by weight besides Al: 3.0 to 5.0wt percent of Cu, 0.5 to 2.5wt percent of Li, 0.2 to 1.5wt percent of Mg, 0.6 to 1.5wt percent of Ag, 0.05 to 0.5wt percent of Mn, 0.05 to 0.4wt percent of Zn, 0.01 to 0.2wt percent of Zr, 0.01 to 0.2wt percent of Ti and 0 to 0.5wt percent of rare earth element.
2. The trace element modified aluminum lithium alloy powder for additive manufacturing according to claim 1, wherein the trace element composition is as follows in weight percent: 3.55 to 4.20 weight percent of Cu, 0.80 to 1.50 weight percent of Li, 0.30 to 0.74 weight percent of Mg, 0.60 to 1.25 weight percent of Ag, 0.05 to 0.20 weight percent of Mn, 0.05 to 0.25 weight percent of Zn, 0.10 to 0.18 weight percent of Zr and 0.10 to 0.2 weight percent of Ti.
3. The trace element modified aluminum lithium alloy powder for additive manufacturing according to claim 1 or 2, wherein the impurity element content is less than 0.03wt% of Fe, less than 0.03wt% of Si, less than 0.0005wt% of Na, less than 0.0005wt% of Ca, and less than 0.0001wt% of H.
4. The trace element modified aluminum lithium alloy powder for additive manufacturing according to claim 3, wherein the rare earth element is one or more of Sc, ce and Er.
5. The method for preparing the trace element modified aluminum lithium alloy powder for additive manufacturing according to any one of claims 1 to 4, which is characterized by comprising the following steps:
step 1, batching: preparing a pure metal raw material or a master alloy raw material according to the weight percentage of each component element in the aluminum lithium alloy powder material for batching;
and 2, smelting and rod making: placing the ingredients into vacuum induction smelting equipment for smelting and casting to prepare a prefabricated alloy rod;
and 3, pulverizing: atomizing the prefabricated alloy rod into powder by using crucible-free electrode induction smelting vacuum air atomization (EIGA) powder making equipment;
and 4, sieving: and screening out product powder in an argon environment by using ultrasonic vibration screen equipment, and packaging the product powder in a powder bottle.
6. The preparation method according to claim 5, wherein the vacuum induction melting equipment in the step 2 is at least 5Kg grade, the used shielding gas is argon, the working vacuum degree is less than or equal to 0.4Pa, and the pressure rise rate is less than or equal to 1Pa/h; the vacuum atomization powder making equipment for crucible-free electrode induction smelting in the step 3 is at least 5Kg grade, the used shielding gas is argon, the working oxygen content is less than or equal to 1000ppm, the working vacuum degree is less than or equal to 0.3Pa, the pressure rise rate is less than or equal to 1Pa/h, and the flow rate of atomization gas is more than or equal to 1200m 3 And/h, the atomization rate is more than or equal to 90 percent.
7. The method according to claim 5 or 6, wherein the particle size of the product powder selected in step 4 is in the range of 15-50. Mu.m.
8. Use of the trace element modified aluminum lithium alloy powder for additive manufacturing according to any one of claims 1-4 in a laser powder bed fusion forming member preparation technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310094166.3A CN116287913A (en) | 2023-02-10 | 2023-02-10 | Microelement modified aluminum lithium alloy powder for additive manufacturing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310094166.3A CN116287913A (en) | 2023-02-10 | 2023-02-10 | Microelement modified aluminum lithium alloy powder for additive manufacturing and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116287913A true CN116287913A (en) | 2023-06-23 |
Family
ID=86785942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310094166.3A Pending CN116287913A (en) | 2023-02-10 | 2023-02-10 | Microelement modified aluminum lithium alloy powder for additive manufacturing and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116287913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117144175A (en) * | 2023-11-01 | 2023-12-01 | 北京索德瀚智能科技有限公司 | Aluminum lithium alloy and preparation method thereof |
-
2023
- 2023-02-10 CN CN202310094166.3A patent/CN116287913A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117144175A (en) * | 2023-11-01 | 2023-12-01 | 北京索德瀚智能科技有限公司 | Aluminum lithium alloy and preparation method thereof |
| CN117144175B (en) * | 2023-11-01 | 2024-03-15 | 北京索德瀚智能科技有限公司 | Aluminum lithium alloy and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11731178B2 (en) | Rolled (FeCoNiCrRn/Al)-2024Al composite panel and fabrication method thereof | |
| US3902862A (en) | Nickel-base superalloy articles and method for producing the same | |
| CN105537603A (en) | Preparing method for ultra-fine high-purity Ti2AlNb alloy powder | |
| WO2023019697A1 (en) | High-strength aluminum alloy powder for 3d printing and preparation method for high-strength aluminum alloy powder | |
| CN110592412B (en) | Nano AlN particle reinforced mixed crystal heat-resistant aluminum-based composite material and preparation method thereof | |
| CN101586197A (en) | Method for preparing titanium alloy ingots through electron-beam cold bed furnaces by adopting conventional raw materials | |
| CN115261686B (en) | 3D printing aluminum-magnesium alloy powder and preparation method and application thereof | |
| CN114134385A (en) | Refractory medium-entropy alloy and preparation method thereof | |
| CN110711862A (en) | Preparation method of special alloy for 3D printing of 6-series aluminum alloy | |
| CN105220051B (en) | Mo-Si-B intermetallic compound rod and preparation method thereof | |
| CN116287913A (en) | Microelement modified aluminum lithium alloy powder for additive manufacturing and preparation method thereof | |
| CN110904378B (en) | Preparation method of TiAl-based composite material with high strength-ductility product | |
| CN111168054B (en) | Special scandium-free Al-Mg-Mn alloy powder for high-strength aluminum alloy 3D printing and preparation method thereof | |
| CN110684913B (en) | Preparation method of ultrahigh-strength and high-toughness aluminum alloy | |
| CN109576522B (en) | Silicon carbide reinforced aluminum-based composite material and preparation method thereof | |
| CN114959406A (en) | Oscillatory pressure sintering ultrahigh-temperature medium-entropy ceramic reinforced refractory fine-grain medium-entropy alloy composite material | |
| CN112958784A (en) | Method for actively controlling uniform distribution and growth direction of reinforcing phase in particle-reinforced titanium-based composite material | |
| CN108359852B (en) | Graphene-reinforced high-silicon aluminum-based composite material and preparation method thereof | |
| CN115094261A (en) | Coarse-grain and fine-grain composite structure titanium alloy and preparation method and application thereof | |
| CN115007869A (en) | Preparation method of titanium-aluminum powder for powder metallurgy with service temperature of 850 DEG C | |
| CN112775427A (en) | Preparation method of high-density near-net-shape titanium alloy | |
| CN110819860A (en) | Aluminum-copper-manganese porous composite material and preparation method and application thereof | |
| CN116287824B (en) | Titanium alloy with continuously adjustable phase structure and preparation method thereof | |
| CN114082985B (en) | Sc/Zr modified high-modulus high-strength aluminum-lithium alloy and laser forming method thereof | |
| CN115466891B (en) | Nb-Si-based alloy with room temperature toughness and thermoformability and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |