CN116275010A - In-situ nitride reinforced 3D printing nickel-based superalloy powder - Google Patents
In-situ nitride reinforced 3D printing nickel-based superalloy powder Download PDFInfo
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000000843 powder Substances 0.000 title claims abstract description 101
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 62
- 238000010146 3D printing Methods 0.000 title claims abstract description 53
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 53
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 38
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 31
- 238000003723 Smelting Methods 0.000 claims abstract description 13
- 238000000889 atomisation Methods 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 3
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 13
- 238000009689 gas atomisation Methods 0.000 claims description 11
- 238000007872 degassing Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000010952 in-situ formation Methods 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 238000007639 printing Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000005728 strengthening Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010587 phase diagram Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- GPTXWRGISTZRIO-UHFFFAOYSA-N chlorquinaldol Chemical compound ClC1=CC(Cl)=C(O)C2=NC(C)=CC=C21 GPTXWRGISTZRIO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- 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 in-situ nitride reinforced 3D printing nickel-based superalloy powder, which comprises the following components in percentage by mass: co: 12-17%, nb: 3-4%, al: 4-6%, ru:0.3 to 3 percent of Ta: 1-2%, Y:0.02 to 0.1 percent of La:0.05 to 0.1 percent of Cr: 8-12%, si:0.2 to 1.5 percent of Re:0.02 to 0.05 percent, B:0.01 to 0.015 percent and the balance of Ni, wherein the powder is subjected to 3D printing to generate nitride in situ to obtain dispersionThe invention prepares novel nickel-based superalloy powder suitable for 3D printing by reasonably designing the proportion of each alloy element and combining vacuum induction smelting and atomization powder making technology, and utilizes in-situ generation of Si in the printing process 3 N 4 The nickel-based superalloy formed piece prepared by the reinforced second phase has high density, good internal quality, few defects, excellent tensile strength and ductility, and the tensile strength of the nickel-based superalloy can reach 1.62GPa at room temperature and the elongation can reach 16.8%.
Description
Technical Field
The invention belongs to the technical field of powder metallurgy, namely advanced manufacturing, and particularly relates to in-situ nitride reinforced 3D printing nickel-based superalloy powder.
Background
Nickel-base alloys have excellent combinations of properties such as high temperature, corrosion, fatigue, wear and abrasion resistance and high strength, with a maximum service temperature of up to 1100 ℃. Therefore, the nickel-based alloy is widely applied to the fields of aerospace, metallurgy, electric power and the like.
The nickel-base superalloy is difficult to cut and has low forming freedom, and the nickel-base superalloy prepared by the traditional method has relatively great difficulty. The 3D printing is a near-net forming technology based on a layering and stacking principle, breaks through inherent limitations of a traditional material reduction manufacturing method, can improve the material utilization rate, can prepare solid parts with high density, and has good applicability to materials difficult to process or parts with complex internal structures.
In the 3D printing process, high temperature gradient and larger thermal stress exist, microcracks are easy to generate, and the performance and the application of the product are seriously influenced. To address this problem, pre-heated substrates prior to printing or post-processing processes after printing are typically selected, but can increase production costs, and a learner may consider strengthening the nickel-based superalloy with a second phase, either by manually adding second phase particles to the matrix, or by using a specific process to form a highly dispersed second phase in the matrix. However, in general, the preparation process of the nickel-based superalloy directly adding the secondary reinforcing phase into the matrix is complex, time-consuming, high in cost, and easy to form a poor coarse structure, resulting in low ductility, and for this reason, the learner proposes to generate the second phase particles in situ in the forming process by utilizing the advantage of 3D printing, but the precise control of the in-situ generation cannot be realized only by changing the laser parameters of the 3D printing, so that the effect of reinforcing the second phase cannot be applied well.
The patent with publication number CN114054775B discloses the aging-enhanced nickel-base superalloy 3D printing process and the 3D printing piece prepared by the aging-enhanced nickel-base superalloy 3D printing process. The aging strengthening type nickel-based superalloy 3D printing process comprises the following steps: 3D printing is carried out on the time-effect-enhanced nickel-based superalloy powder under vacuum or protective atmosphere, the power of the 3D printing is 280-290W, and the scanning speed of the 3D printing is 920-965 mm/s; the aging strengthening type nickel-based superalloy powder is prepared by adopting a vacuum melting gas atomization mode, the advantage of 3D printing of the patent generates second-phase particles in situ in the forming process, but the accurate control on in-situ generation cannot be realized only by changing the laser parameters of 3D printing, so that the strengthening effect of the second phase cannot be well applied.
Disclosure of Invention
The present invention is directed to solving the problems mentioned in the background art above, and provides an in-situ nitride reinforced 3D printing nickel-based superalloy powder to solve the problems of the prior art.
The technical scheme adopted by the invention is as follows:
an in-situ nitride reinforced 3D printing nickel-based superalloy powder, comprising, in mass percent, 100% of the sum of the mass percentages of the powder components: co: 12-17%, nb: 3-4%, al: 4-6%, ru:0.3 to 3 percent of Ta: 1-2%, Y:0.02 to 0.1 percent of La:0.05 to 0.1 percent of Cr: 8-12%, si:0.2 to 1.5 percent of Re:0.02 to 0.05 percent, B:0.01 to 0.015 percent, and the balance of Ni.
Further, the powder is subjected to in-situ generation of nitride through 3D printing to obtain the dispersion strengthening nickel-based superalloy.
Further, the preparation method of the dispersion strengthening nickel-based superalloy comprises the following steps:
s1: preparing metal powder according to the mass percentage under the vacuum condition;
s2: smelting and degassing the prepared metal powder to obtain a melt;
s3: performing gas atomization treatment on the obtained melt to obtain 3D printing nickel-based superalloy powder;
s4: taking 3D printing nickel-based superalloy powder as a raw material, and preparing a product through 3D printing.
Further, in the step S2, the prepared metal powder is smelted, the prepared alloy powder is put into a smelting furnace, and inert gas is filled for protection when the vacuum degree of the furnace chamber is higher than 0.1 MPa.
Further, the degassing treatment in the step S2 is carried out at a degassing temperature of 1500 ℃ for 8-10 min.
Further, in the step S3, the gas atomization treatment is performed by introducing inert gas to perform atomization powder preparation, and the pressure in the furnace is 0.2-0.3 bar.
Further, the powder after atomization pulverization in the step S3 is placed into a drying oven, the heat preservation time is 16-20 hours, and the drying temperature is 70-90 ℃.
Further, the inert gas is high-purity argon with purity of 99.99%.
Further, after the atomization powder preparation in the step S3, the powder with the particle size of 35-45 mu m is obtained for standby.
Further, the 3D printing equipment is selected area laser melting equipment, the laser power is controlled to be 280-320W, the scanning speed is 800-1000 mm/s, the scanning interval is 0.08-0.12 mm, the layer thickness is 0.2-0.3 mm, and the rotation angle of adjacent layers is 67 degrees.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, nb, ru, ta, Y and La elements in the prepared nickel-based superalloy powder can improve the strength, hardness, wear resistance and performance of the nickel-based alloy at high temperature; the addition of Si element makes the Si element react with nitrogen in the forming environment in the 3D printing process under the heating condition to generate dispersed fine reinforced particles Si in situ 3 N 4 The existence of the second phase reinforcing particles plays a strong role in pinning dislocation, grain boundary and subgrain boundary, so that the alloy is reinforced, and particularly the high-temperature performance of the material is improved; the Re element plays a role of a catalyst, promotes the heating reaction of Si and nitrogen, and is beneficial to enhancing the generation of the Si3N4 particles. Through the composition design of the 3D printing nickel-based superalloy, the tensile strength of the nickel-based superalloy can reach 1.62GPa at room temperature, and the elongation can reach 16.8%.
The novel nickel-based superalloy powder suitable for 3D printing is prepared by reasonably designing the proportion of each alloy element and combining vacuum induction smelting and argon atomization powder making technologies; on the premise of ensuring that the prepared powder has high sphericity, low oxygen content, good fluidity and less satellite powder, the nickel-based superalloy formed part prepared by in-situ generation of Si3N4 reinforced second phase in the printing process has high compactness, good internal quality, few defects, excellent tensile strength and ductility, and meets the quality requirements of the current nickel-based superalloy.
Drawings
FIG. 1 is an SEM image at 200 times magnification of example 1;
FIG. 2 is an SEM image at 500 times magnification of example 1;
FIG. 3 is a golden phase diagram of a nickel-base superalloy sample prepared in example 1;
FIG. 4 is a golden phase diagram of a nickel-base superalloy sample prepared in example 2;
FIG. 5 is a golden phase diagram of a nickel-base superalloy sample prepared in example 3;
FIG. 6 is a golden phase diagram of a sample of nickel-base superalloy prepared in example 4.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below. Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Example 1
An embodiment of the present invention provides: the in-situ nitride reinforced 3D printing nickel-based superalloy powder comprises the following specific chemical components in percentage by mass: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:1%, re:0.03%, B:0.01% and the balance Ni.
S1: preparing metal powder according to the mass percentage under the vacuum condition;
s2: smelting raw materials: adding the prepared metal powder into a smelting furnace for vacuum smelting, wherein the smelting temperature is 1500 ℃; when the vacuum degree of the furnace chamber is higher than 0.1MPa, inert gas is filled for protection, and the melt is obtained through degassing, wherein the degassing time is 9min;
s3: atomizing to prepare powder, and introducing the obtained melt into an atomizing furnace for gas atomization treatment, wherein the diameter of the gas atomization treatment is 3.5mm by using an annular conical nozzle; the jet gas cone apex angle is 55 degrees, and the atomization temperature is 400 ℃ above the liquidus temperature; the spraying speed of the air atomization treatment is controlled at 3.7kg/min; the pressure in the gas atomization furnace is controlled to be 0.25bar; the pressure of the high-pressure atomizing medium is controlled to be 4.5MPa; powder screening: carrying out screening treatment on the prealloyed metal powder to obtain metal powder with the particle size ranging from 35 mu m to 45 mu m, and carrying out heat preservation and drying: placing the sieved powder into a drying oven, and keeping the temperature for 18 hours at 80deg.C
S4: taking 3D printing nickel-based superalloy powder as a raw material, and preparing a product through 3D printing. The laser parameters of the powder for 3D printing are as follows: the preheating temperature of the printing substrate is 150 ℃; the laser scanning power is 280W; the laser scanning speed is 800mm/s; the scanning interval is 0.10mm; the interlayer thickness was 0.3mm.
Referring to FIGS. 1-3, the tensile strength of the part was 1620MPa and the elongation was 16.7%.
Example 2
An embodiment of the present invention provides: preparing in-situ nitride reinforced 3D printing nickel-based superalloy powder, and preparing metal powder, wherein the specific chemical composition of the metal powder is Co:15%, nb:1.5%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:1%, re:0.03%, B:0.01% and the balance Ni.
S1: preparing metal powder according to the mass percentage under the vacuum condition;
s2: smelting raw materials: adding the prepared metal powder into a smelting furnace for vacuum smelting, wherein the smelting temperature is 1500 ℃; when the vacuum degree of the furnace chamber is higher than 0.1MPa, inert gas is filled for protection, and the melt is obtained through degassing, wherein the degassing time is 9min;
s3: atomizing to prepare powder, and introducing the obtained melt into an atomizing furnace for gas atomization treatment, wherein the diameter of the gas atomization treatment is 3.5mm by using an annular conical nozzle; the jet gas cone apex angle is 55 degrees, and the atomization temperature is 400 ℃ above the liquidus temperature; the spraying speed of the air atomization treatment is controlled at 3.7kg/min; the pressure in the gas atomization furnace is controlled to be 0.25bar; the pressure of the high-pressure atomizing medium is controlled to be 4.5MPa; powder screening: carrying out screening treatment on the prealloyed metal powder to obtain metal powder with the particle size ranging from 35 mu m to 45 mu m, and carrying out heat preservation and drying: placing the sieved powder into a drying oven, and keeping the temperature for 18 hours at 80deg.C
S4: taking 3D printing nickel-based superalloy powder as a raw material, and preparing a product through 3D printing. The laser parameters of the powder for 3D printing are as follows: the preheating temperature of the printing substrate is 150 ℃; the laser scanning power is 280W; the laser scanning speed is 800mm/s; the scanning interval is 0.10mm; the interlayer thickness was 0.3mm.
Referring to FIG. 4, the tensile strength of the part was 1470MPa and the elongation was 14.8%.
Example 3
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.2%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:1%, re:0.03%, B:0.01% and the balance Ni.
Referring to FIG. 5, the tensile strength of the part was found to be 1530MPa, with an elongation of 15.3%.
Example 4
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:0.5%, Y:0.08%, la:0.06%, cr:9%, si:1%, re:0.03%, B:0.01% and the balance Ni.
Referring to FIG. 6, the tensile strength of the part was measured to be 1528MPa, and the elongation was 15.2%.
Example 5
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.01%, la:0.06%, cr:9%, si:1%, re:0.03%, B:0.01% and the balance Ni.
The tensile strength of the part is 1600MPa, and the elongation is 16.3%.
Example 6
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.01%, cr:9%, si:1%, re:0.03%, B:0.01% and the balance Ni.
The tensile strength of the part is 1603MPa, and the elongation is 16.4%.
Example 7
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:0.8%, re:0.03%, B:0.01% and the balance Ni.
The tensile strength of the part is 1553MPa, and the elongation is 16.0%.
Example 8
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:0.6%, re:0.03%, B:0.01% and the balance Ni.
The tensile strength of the part is 1506MPa and the elongation is 15.7%.
Example 9
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:0.4%, re:0.03%, B:0.01% and the balance Ni.
The tensile strength of the part is 1453MPa, and the elongation is 15.1%.
Example 10
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:0.2%, re:0.03%, B:0.01% and the balance Ni.
The tensile strength of the part is measured to be 1397MPa, and the elongation is 14.3%.
Example 11
An embodiment of the present invention provides: in-situ nitride enhanced 3D printed nickel-based superalloy powder, other conditions were consistent with example 1 except that: preparing metal powder, wherein the specific chemical composition of the metal powder is as follows: 15%, nb:3%, al:5%, ru:0.4%, ta:2%, Y:0.08%, la:0.06%, cr:9%, si:1%, re:0.01%, B:0.01% and the balance Ni.
The tensile strength of the part is 1615MPa, and the elongation is 16.5%.
The invention provides in-situ nitride reinforced 3D printing nickel-based superalloy powder, wherein Nb, ru, ta, Y and La elements in the prepared nickel-based superalloy powder can improve the strength, hardness, wear resistance and performance of a nickel-based alloy at high temperature; the addition of Si element makes the Si element react with nitrogen in the forming environment in the 3D printing process under the heating condition to generate dispersed fine reinforced particles Si in situ 3 N 4 The existence of the second phase reinforcing particles plays a strong role in pinning dislocation, grain boundary and subgrain boundary, so that the alloy is reinforced, and particularly the high-temperature performance of the material is improved; the Re element plays a role of a catalyst, promotes the heating reaction of Si and nitrogen, and is beneficial to enhancing the generation of the Si3N4 particles. By setting the components of the 3D printing nickel-based superalloyThe tensile strength of the nickel-based superalloy can reach 1.62GPa at room temperature, and the elongation can reach 16.8%.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. The in-situ nitride reinforced 3D printing nickel-based superalloy powder is characterized in that the total of the components of the powder is 100% by mass percent, and the powder comprises the following components in percentage by mass: co: 12-17%, nb: 3-4%, al: 4-6%, ru:0.3 to 3 percent of Ta: 1-2%, Y:0.02 to 0.1 percent of La:0.05 to 0.1 percent of Cr: 8-12%, si:0.2 to 1.5 percent of Re:0.02 to 0.05 percent, B:0.01 to 0.015 percent, and the balance of Ni.
2. An in situ nitride reinforced 3D printed nickel-base superalloy powder according to claim 1, wherein the powder is dispersion strengthened nickel-base superalloy obtained by in situ formation of nitride by 3D printing.
3. The in-situ nitride reinforced 3D printing nickel-based superalloy powder of claim 2, wherein the dispersion strengthened nickel-based superalloy preparation method comprises:
s1: preparing metal powder according to the mass percentage under the vacuum condition;
s2: smelting and degassing the prepared metal powder to obtain a melt;
s3: performing gas atomization treatment on the obtained melt to obtain 3D printing nickel-based superalloy powder;
s4: taking 3D printing nickel-based superalloy powder as a raw material, and preparing a product through 3D printing.
4. An in-situ nitride reinforced 3D printed nickel-based superalloy powder as defined in claim 3, wherein in step S2 the formulated metal powder is melted, the formulated alloy powder is placed in a melting furnace, and inert gas is introduced when the furnace chamber vacuum is higher than 0.1 MPa.
5. An in-situ nitride reinforced 3D printing nickel-base superalloy powder according to claim 3, wherein the degassing in step S2 is performed at 1500 ℃ for a degassing time of 8-10 min.
6. The in-situ nitride reinforced 3D printing nickel-based superalloy powder according to claim 3, wherein in step S3, the gas atomization is performed by introducing inert gas to perform atomization powder preparation, and the pressure in the furnace is 0.2-0.3 bar.
7. The in-situ nitride reinforced 3D printing nickel-based superalloy powder according to claim 3, wherein the powder after atomization in step S3 is placed in a drying oven, and the heat preservation time is 16-20 hours, and the drying temperature is 70-90 ℃.
8. The in-situ nitride reinforced 3D printing nickel-based superalloy powder of claim 6, wherein the inert gas is high purity argon with a purity of 99.99%.
9. The in-situ nitride reinforced 3D printing nickel-base superalloy powder according to claim 3, wherein the powder with a particle size of 35-45 μm is obtained by sieving after atomizing and pulverizing in step S3.
10. An in-situ nitride reinforced 3D printing nickel-base superalloy powder as in claim 3, wherein the 3D printing equipment is selected area laser melting equipment, the control laser power is 280-320W, the scanning speed is 800-1000 mm/s, the scanning interval is 0.08-0.12 mm, the layer thickness is 0.2-0.3 mm, and the adjacent layer rotation angle is 67 °.
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| CN117265329A (en) * | 2023-08-30 | 2023-12-22 | 江苏美特林科特殊合金股份有限公司 | In-situ generated nitride reinforced additive manufacturing superalloy and preparation method thereof |
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| CN117265329A (en) * | 2023-08-30 | 2023-12-22 | 江苏美特林科特殊合金股份有限公司 | In-situ generated nitride reinforced additive manufacturing superalloy and preparation method thereof |
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