CN111926207A - Method for preparing nickel-based alloy - Google Patents
Method for preparing nickel-based alloy Download PDFInfo
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- CN111926207A CN111926207A CN202010879933.8A CN202010879933A CN111926207A CN 111926207 A CN111926207 A CN 111926207A CN 202010879933 A CN202010879933 A CN 202010879933A CN 111926207 A CN111926207 A CN 111926207A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- 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
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
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Abstract
The invention belongs to the field of advanced metal material preparation research, and particularly provides a method for preparing a nickel-based alloy by adopting laser cladding forming, which comprises the following specific steps of: firstly preparing solution with proper concentration, then adding gas atomized nickel base alloy powder into the solution to dip for a period of time, then adding nano Y2O3Or La2O3Adding one of the powders into the solution, stirring, and drying the solution. Preparing nickel-based alloy powder coated with nano oxides: and (3) putting the precursor powder obtained in the step (a) into a high-speed stirring heating furnace, and carrying out high-speed stirring at a certain temperature under the condition of atmosphere protection to obtain the nickel-based alloy powder coated with the nano oxide. Coating the nano oxideThe coated nickel-based alloy powder is subjected to laser cladding forming to form the oxide dispersion strengthened nickel-based alloy. The invention provides a new idea for preparing the oxide dispersion strengthening nickel-based alloy and has the advantages of short production period, low cost, convenient operation and the like.
Description
Technical Field
The invention belongs to the field of advanced metal material preparation research, and particularly provides a method for preparing a nickel-based alloy by adopting laser cladding forming.
Background
The nickel-base high-temperature alloy generally adopts ordered phase gamma' -Ni3Al is precipitated and strengthened. However, as the use temperature increases, the γ' phase becomes coarse and the strengthening effect decreases. When the temperature exceeds the dissolution temperature of the gamma 'phase, the gamma' is dissolved in the austenite matrix again, so that the precipitation strengthening effect is lost. Unlike the precipitated phase limited by the use temperature, the nano oxide is more thermally stable and will not dissolve even when heated to a temperature close to the melting point of the alloy, so it is at 0.7TmThe high-temperature creep property, the fatigue property and the oxidation resistance are excellent even at the temperature close to the melting point. The mechanism of strengthening using nano-oxide is called Dispersion strengthening, and the nickel-based alloy strengthened by the Dispersion strengthening mechanism is called Oxide Dispersion Strengthened (ODS) nickel-based alloy.
Blades in advanced gas turbines and turbines in automotive turbochargers with complex shapes are potential alternatives to ODS nickel-based alloys. However, the ODS nickel-based alloy has high hardness, low plasticity and poor processing formability, and is difficult to prepare parts such as blades or turbines with complex shapes by the traditional machining method, which seriously restricts the popularization and application of the nickel-based alloy. Researchers at home and abroad are always dedicated to the development of ODS nickel-based high-temperature alloy and the research of a complex shape near-net-shape forming technology. Among them, the 3D printing technology is a representative technology of powder near-net shaping, and is suitable for shaping parts with moderate size and complex shape. The laser cladding forming technology in the 3D printing technology has attracted extensive attention because of having a series of advantages such as low cost, high product density, high precision, little or even no cutting.
In order to ensure the integrity of a complex fine structure in a near-net-shape forming process, spherical fine-grained powder is generally required for powder used for laser cladding forming, and the purity of the powder is higher. However, most of the methods for preparing ODS nickel-based alloys at present are mechanical alloying methods. When the ODS nickel-based alloy is prepared by a mechanical alloying process, Al, Ti, Cr and other elements are easily oxidized in the mechanical alloying process, so that the final alloy performance is reduced. Meanwhile, high-energy ball milling process powder, ball milling media and the ball milling tank can collide at high speed, and long-time ball milling causes pollution caused by introduction of the ball milling media and elements in the ball milling tank into target powder, so that the performance of the final material is influenced. Finally, the powder obtained by mechanical alloying is seriously hardened, most of the powder is irregular in shape, the powder has poor flowability, and the powder can only be formed by some special methods such as sheath hot extrusion, sheath hot isostatic pressing or discharge plasma sintering, so that the requirement of a laser cladding forming technology on the powder cannot be met.
Disclosure of Invention
The invention aims to provide a method for preparing a nickel-based alloy, and aims to develop an efficient method for preparing the nickel-based alloy with an ultrafine oxide dispersed phase. The nickel-based alloy has strong designability and extremely fine and uniform oxide dispersed phase.
The method comprises the steps of firstly preparing a powder precursor by adopting atomized powder of a target alloy and corresponding nano oxides, then placing the powder precursor in a specially-made stirring heating furnace to obtain nickel-based alloy powder wrapped by superfine oxide dispersed phases, and finally carrying out laser cladding forming on the nickel-based powder wrapped by the nano oxides to obtain the ODS nickel-based alloy with a complex shape.
Accordingly, the present invention provides a method for preparing a nickel-based alloy, said method comprising the steps of, a, configuration of precursor powders: firstly, the concentration is adjusted to be 4-10 g.L-1Adding the gas atomized nickel-based alloy powder into the solution to be soaked for 10-30 minutesThen selecting nano Y2O3Or La2O3One of the powders is a nano oxide source, the nano oxide source is added into the solution and stirred for 0.5-6 hours, and then the solution is dried, wherein the nano oxide and the argon atomized powder are used in such amounts that the nano oxide in the finally prepared powder accounts for 0.01-5 wt% of the ODS nickel-based alloy. b. Preparing nickel-based alloy powder coated with nano oxides: and (b) putting the precursor powder obtained in the step (a) into a high-speed stirring heating furnace, stirring at a certain temperature under the condition of atmosphere protection, decomposing and removing organic matters remained in the precursor in the high-speed stirring process, scattering the powder raw material, and infiltrating the nano oxide into the surface layer of the aerosol alloy powder particles to finally obtain the nickel-based alloy powder coated with the nano oxide. c. Carrying out laser cladding on the nickel-based alloy powder coated with the nano oxide to form an ODS nickel-based alloy: and c, carrying out laser cladding forming on the nickel-based alloy powder coated with the nano oxide obtained in the step b, controlling the process in the laser cladding forming process to enable the metal powder to be melted by laser to form a molten pool, and carrying the nano oxide into the molten pool by the flowing of liquefied metal in the molten pool and uniformly dispersing and distributing the nano oxide to finally obtain the nickel-based alloy with the superfine oxide dispersed phase.
In a specific embodiment, in step a, the solution for preparing the precursor powder is poly (diallyldimethylammonium chloride) solution or cysteine solution with a concentration of 4-10 g.L-1Preferably 6 to 8 g.L-1。
In a specific embodiment, in step a, the atomized nickel-based alloy is nickel-based superalloy with various standard grades or non-standard alloy designed according to actual working conditions, and preferably: k418 (national standard), K491 (national standard), FGH96 (national standard), Nimonic 90 (U.S. standard), Inconel718 (U.S. standard) MA754 (U.S. standard), and MA6000 (U.S. standard).
In a specific embodiment, in step a, the time for stirring after the powder raw material is added to the solution is 0.5 to 6 hours, preferably 0.5 to 2 hours.
In a specific embodiment, in step a, the source of nano-oxide is nano-oxideRice Y2O3Or La2O3One of the powders, the final nano-oxide, is present in an amount of 0.01-5 wt.%, preferably 0.1-2 wt.%, based on the weight of the ODS nickel-based powder.
In a specific embodiment, the protective atmosphere in step b is one of vacuum, argon and nitrogen, and preferably the protective atmosphere is vacuum and argon.
In a particular embodiment, the incubation temperature in step b is from 100 ℃ to 600 ℃, preferably from 200 ℃ to 400 ℃.
In a specific embodiment, the rotation speed of the stirring propeller in step b is 15000-.
In a particular embodiment, the stirring time in step b is from 0.5 to 4 hours, preferably from 0.5 to 2 hours.
In a specific embodiment, the laser scanning speed in step c is 500-.
In a specific embodiment, the laser scanning pitch in step c is 0.02 to 0.075mm, preferably 0.03 to 0.05 mm.
In a particular embodiment, the thickness of the dusting in step c is from 0.02 to 0.075mm, preferably from 0.03 to 0.05 mm.
The invention has the advantages that:
1. the invention provides a method for preparing ODS nickel-based alloy by using SLM, which effectively solves the problems of poor flowability, low apparent density and difficulty in SLM forming of mechanically alloyed ODS nickel-based powder, and provides a new idea for near-net forming of ODS nickel-based alloy.
2. The ODS nickel-based alloy obtained by the method has high density, and the dispersed phase particle size of the nano oxide is 5-20nm and is uniformly dispersed and distributed in a matrix.
3. The alloy prepared by the method has the advantages of high component designability and low cost, and can be used for preparing products with complex shapes under the condition of less processing or no processing.
Drawings
FIG. 1 is a process flow diagram of a method of making a nickel-base alloy according to the present invention.
Detailed Description
The technical solution of the present invention is further described with reference to the following specific embodiments.
As shown in fig. 1, a method of preparing a nickel-based alloy according to the present invention includes the steps of:
s1) configuration of precursor powder: adding argon atomized nickel-based alloy powder into a proper amount of precursor solution, dipping, adding a rare earth-containing nano oxide source, uniformly stirring, and drying to obtain precursor powder;
s2) heating the precursor powder obtained in the step S1) under the atmosphere protection condition, keeping the temperature at a set heating temperature, and stirring at a high speed to obtain nickel-based alloy powder coated with nano oxides;
s3) carrying out laser cladding forming on the nickel-based alloy powder coated with the nano oxides obtained in the step S2), controlling the process to enable the metal powder to be melted by laser to form a molten pool, and carrying the nano oxides into the molten pool by the flowing of liquefied metal in the molten pool and uniformly dispersing and distributing the nano oxides to finally obtain the nickel-based alloy with the superfine oxide dispersed phase.
The S1) comprises the following specific steps:
s1.1) firstly preparing a precursor solution, and then adding gas atomized nickel-based alloy powder into the precursor solution to dip for 10-30 minutes to obtain a suspension solution;
s1.2) selecting a rare earth-containing nano oxide source, adding the rare earth-containing nano oxide source into the suspension solution, stirring for 0.5-6 hours, drying the solution to obtain precursor powder,
wherein the rare earth nano-oxide is used in an amount such that the nano-oxide in the finally prepared alloy accounts for 0.01-5 wt.% of the weight of the nickel-based alloy with the superfine oxide dispersed phase.
The argon atomization nickel-based alloy powder is one of K418 alloy, K491 alloy, FGH96 alloy, Nimonic 90 alloy, Inconel718 alloy, MA754 alloy or MA6000 alloy.
The precursor solution is poly diallyl dimethyl ammonium chloride solution or cysteineThe concentration is 4-10 g.L-1；
The rare earth nano oxide source is Y2O3Or La2O3Powder;
the S2) comprises the following specific steps:
s2.1) placing the obtained precursor powder in a protective atmosphere for heating to 100-600 ℃;
s2.2) preserving the heat, and stirring for 0.5-4 hours by adopting a stirring propeller at the rotating speed of 15000-.
The protective atmosphere is argon, nitrogen or vacuum.
The S3) comprises the following specific steps:
s3.1) carrying out laser cladding forming on the obtained nickel-based alloy powder coated with the nano oxide, wherein the powder spreading thickness is 0.02-0.075 mm;
s3.2) laser scanning is adopted, the scanning speed is 500-4000mm/S, the scanning distance is 0.02-0.075mm, the flow of the liquefied metal in the molten pool brings the nano oxide into the molten pool and the nano oxide is uniformly dispersed and distributed, and finally the nickel-based alloy with the superfine oxide dispersed phase is obtained.
The concentration of the precursor solution can also be 6-8 g.L-1；
The rare earth nano-oxide is used in an amount such that the nano-oxide in the finally prepared alloy accounts for 0.1-2 wt.% of the nickel-based alloy with the superfine oxide dispersed phase.
The heating temperature in the S2) can also be 200-400 ℃;
the rotation speed can also be 20000-30000 r/min, and the stirring time can be 0.5-2 hours.
In the S3), the powder spreading thickness can also be 0.03-0.05 mm; the scanning speed is 1000-2000 mm/s; the scanning interval can also be 0.03-0.05 mm.
Example 1:
composition (I)
Ni-12wt.％Cr-6wt.％Al-1wt.％Ti-4wt.％Mo-2wt.％Nb-0.25wt.％La2O3Preparation of nickel-based alloys
Argon atomized powder and nano La with the components of Ni-12 wt.% Cr-6 wt.% Al-1 wt.% Ti-4 wt.% Mo-2 wt.% Nb2O3The powder was weighed out for use at a weight ratio of 99.75: 0.25. The weighed argon atomized powder of Ni-12 wt.% Cr-6 wt.% Al-1 wt.% Ti-4 wt.% Mo-2 wt.% Nb is dissolved in 5 g.L-1Soaking the poly (diallyl dimethyl ammonium chloride) solution for 15 minutes, and then adding nano La2O3Adding the powder into the solution, stirring for 1.5 hours, and drying the solution to obtain a powder precursor. And stirring the powder precursor for 1 hour in an argon atmosphere at the temperature of 320 ℃ and the rotating speed of a stirring propeller of 20000 revolutions per minute to obtain the nickel-based alloy powder coated with the nano oxide. And finally, carrying out laser cladding forming on the nickel-based alloy powder coated with the nano oxide, wherein forming parameters comprise the powder laying thickness of 0.03mm, the scanning speed of 1000mm/s and the scanning distance of 0.05mm, and obtaining the ODS nickel-based alloy product with the target shape.
Example 2:
composition (I)
Ni-18wt.％Cr-21wt.％Fe-1wt.％Co-0.6wt.％Al-1wt.％Ti-3wt.％Mo-5wt.％Nb-0.4wt.％La2O3Preparation of nickel-based alloys
Is prepared from
Argon atomized powder of Ni-18 wt.% Cr-21 wt.% Fe-1 wt.% Co-0.6 wt.% Al-1 wt.% Ti-3 wt.% Mo-5 wt.% Nb and nano La2O3The powder was weighed well for use at a weight ratio of 99.6: 0.4. The weighed argon atomized powder of Ni-18 wt.% Cr-21 wt.% Fe-1 wt.% Co-0.6 wt.% Al-1 wt.% Ti-3 wt.% Mo-5 wt.% Nb is dissolved in 8 g.L-1Soaking the poly (diallyl dimethyl ammonium chloride) solution for 30 minutes, and then adding nano La2O3And adding the powder into the solution, stirring for 2 hours, and drying the solution to obtain a powder precursor. And stirring the powder precursor for 1 hour in an argon atmosphere at the temperature of 350 ℃ and the rotating speed of a stirring propeller of 25000 r/min to obtain the nickel-based alloy powder coated by the nano oxide. And finally, carrying out laser cladding forming on the nickel-based alloy powder coated with the nano oxide, wherein forming parameters comprise the powder laying thickness of 0.05mm, the scanning speed of 1500mm/s and the scanning distance of 0.04mm, and obtaining the ODS nickel-based alloy product with the target shape.
Example 3:
the composition Ni-20 wt.% Cr-0.3 wt.% Al-0.5 wt.% Ti-0.1 wt.% Fe-0.6 wt.% Y2O3Preparation of nickel-based alloys
Argon atomized powder containing Ni-20 wt.% Cr-0.3 wt.% Al-0.5 wt.% Ti-0.1 wt.% Fe and nano-Y2O3The powder was weighed well for use at a weight ratio of 99.4: 0.6. Dissolving the weighed argon atomized powder of Ni-20 wt.% Cr-0.3 wt.% Al-0.5 wt.% Ti-0.1 wt.% Fe in 4 g.L-1Is soaked for 10 minutes, and then the nano Y is put into2O3And adding the powder into the solution, stirring for 2 hours, and drying the solution to obtain a powder precursor. And stirring the powder precursor for 1 hour in an argon atmosphere at the temperature of 500 ℃ and the rotating speed of a stirring propeller of 20000 revolutions per minute to obtain the nickel-based alloy powder coated with the nano oxide. And finally, carrying out laser cladding forming on the nickel-based alloy powder coated with the nano oxide, wherein forming parameters comprise the powder laying thickness of 0.03mm, the scanning speed of 2500mm/s and the scanning distance of 0.03mm, and obtaining the ODS nickel-based alloy product with the target shape.
Example 4:
composition (I)
Ni-15wt.％Cr-4.5wt.％Al-2.5wt.％Ti-4wt.％W-2wt.％Mo-2wt.％Ta-1.1wt.％Y2O3Preparation of nickel-based alloys
Is prepared from
Argon atomized powder of Ni-15 wt.% Cr-4.5 wt.% Al-2.5 wt.% Ti-4 wt.% W-2 wt.% Mo-2 wt.% Ta and nano-Y2O3The powder was weighed well for use at a weight ratio of 98.9: 1.1. The weighed argon atomized powder of Ni-15 wt.% Cr-4.5 wt.% Al-2.5 wt.% Ti-4 wt.% W-2 wt.% Mo-2 wt.% Ta is dissolved in 8 g.L-1Is soaked for 30 minutes, and then the nano Y is put into2O3And adding the powder into the solution, stirring for 2 hours, and drying the solution to obtain a powder precursor. And stirring the powder precursor for 1 hour in an argon atmosphere at 480 ℃ and at the rotating speed of a stirring propeller of 30000 r/min to obtain the nickel-based alloy powder coated with the nano oxide. Finally, the nickel-based alloy powder wrapped by the nano oxide is subjected to laser cladding forming to form the forming ginsengThe number of the powder is 0.04mm, the scanning speed is 1800mm/s, and the scanning distance is 0.04mm, so that the ODS nickel-based alloy product with the target shape is obtained.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions and substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A method of making a nickel-base alloy, comprising the steps of:
s1) configuration of precursor powder: adding argon atomized nickel-based alloy powder into a proper amount of precursor solution, dipping, adding a rare earth-containing nano oxide source, uniformly stirring, and drying to obtain precursor powder;
s2) heating the precursor powder obtained in the step S1) under the atmosphere protection condition, keeping the temperature at a set heating temperature, and stirring at a high speed to obtain nickel-based alloy powder coated with nano oxides;
s3) carrying out laser cladding forming on the nickel-based alloy powder coated with the nano oxides obtained in the step S2), controlling the process to enable the metal powder to be melted by laser to form a molten pool, and carrying the nano oxides into the molten pool by the flowing of liquefied metal in the molten pool and uniformly dispersing and distributing the nano oxides to finally obtain the nickel-based alloy with the superfine oxide dispersed phase.
2. The method as claimed in claim 1, wherein the specific steps of S1) are:
s1.1) firstly preparing a precursor solution, and then adding gas atomized nickel-based alloy powder into the precursor solution to dip for 10-30 minutes to obtain a suspension solution;
s1.2) selecting a rare earth-containing nano oxide source, adding the rare earth-containing nano oxide source into the suspension solution, stirring for 0.5-6 hours, and drying the solution to obtain precursor powder;
wherein the rare earth nano-oxide is used in an amount such that the nano-oxide in the finally prepared alloy accounts for 0.01-5 wt.% of the weight of the nickel-based alloy with the superfine oxide dispersed phase.
3. The method of claim 2, wherein the argon atomized nickel-based alloy powder is one of a K418 alloy, a K491 alloy, an FGH96 alloy, a Nimonic 90 alloy, an Inconel718 alloy, an MA754 alloy, or an MA6000 alloy.
4. The method of claim 2, wherein the precursor solution is poly (diallyldimethylammonium chloride) solution or cysteine with a concentration of 4-10 g-L-1；
The rare earth nano oxide source is Y2O3Or La2O3And (3) powder.
5. The method as claimed in claim 3, wherein the specific steps of S2) are as follows:
s2.1) placing the obtained precursor powder in a protective atmosphere for heating to 100-600 ℃;
s2.2) preserving the heat, and stirring for 0.5-4 hours by adopting a stirring propeller at the rotating speed of 15000-.
6. The method of claim 4, wherein the protective atmosphere is argon, nitrogen, or vacuum.
7. The method as claimed in claim 5, wherein the specific steps of S3) are as follows:
s3.1) carrying out laser cladding forming on the obtained nickel-based alloy powder coated with the nano oxide, wherein the powder spreading thickness is 0.02-0.075 mm;
s3.2) laser scanning is adopted, the scanning speed is 500-4000mm/S, the scanning distance is 0.02-0.075mm, the flow of the liquefied metal in the molten pool brings the nano oxide into the molten pool and the nano oxide is uniformly dispersed and distributed, and finally the nickel-based alloy with the superfine oxide dispersed phase is obtained.
8. The method according to claim 3, wherein the precursor solution has a concentration of 6-8 g-L-1；
The rare earth nano-oxide is used in an amount such that the nano-oxide in the finally prepared alloy accounts for 0.1-2 wt.% of the nickel-based alloy with the superfine oxide dispersed phase.
9. The method as claimed in claim 4, wherein the set temperature in S2) is also 200-400 ℃;
the rotation speed can also be 20000-30000 r/min, and the stirring time can be 0.5-2 hours.
10. The method as claimed in claim 6, wherein in the step S3), the powder spreading thickness is also 0.03-0.05 mm; the scanning speed is 1000-2000 mm/s; the scanning interval can also be 0.03-0.05 mm.
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|---|---|---|---|---|
| US3533760A (en) * | 1965-04-02 | 1970-10-13 | Sherritt Gordon Mines Ltd | Dispersion strengthened nickel-chromium alloy composition |
| CN102251131A (en) * | 2011-06-30 | 2011-11-23 | 北京科技大学 | Method for preparing injection-molding nickel-base ODS (oxide dispersion strengthened) alloy |
| CN102912189A (en) * | 2012-11-15 | 2013-02-06 | 江苏新亚特钢锻造有限公司 | Laser-cladding cobalt-based alloy powder and method for preparing same |
| CN103526077A (en) * | 2013-10-22 | 2014-01-22 | 江苏盛伟模具材料有限公司 | Micro-nano oxide particle enhanced nickel base alloy powder as well as preparation method thereof |
| CN109332680A (en) * | 2018-11-07 | 2019-02-15 | 南京航空航天大学 | A kind of nano-oxide particles for high energy beam 3D printing/nickel base superalloy composite spherical powder and preparation method thereof |
-
2020
- 2020-08-27 CN CN202010879933.8A patent/CN111926207B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533760A (en) * | 1965-04-02 | 1970-10-13 | Sherritt Gordon Mines Ltd | Dispersion strengthened nickel-chromium alloy composition |
| CN102251131A (en) * | 2011-06-30 | 2011-11-23 | 北京科技大学 | Method for preparing injection-molding nickel-base ODS (oxide dispersion strengthened) alloy |
| CN102912189A (en) * | 2012-11-15 | 2013-02-06 | 江苏新亚特钢锻造有限公司 | Laser-cladding cobalt-based alloy powder and method for preparing same |
| CN103526077A (en) * | 2013-10-22 | 2014-01-22 | 江苏盛伟模具材料有限公司 | Micro-nano oxide particle enhanced nickel base alloy powder as well as preparation method thereof |
| CN109332680A (en) * | 2018-11-07 | 2019-02-15 | 南京航空航天大学 | A kind of nano-oxide particles for high energy beam 3D printing/nickel base superalloy composite spherical powder and preparation method thereof |
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