CN115283629B - Method for preparing nickel-based superalloy by using double-roller casting and rolling process - Google Patents
Method for preparing nickel-based superalloy by using double-roller casting and rolling process Download PDFInfo
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- CN115283629B CN115283629B CN202210922001.6A CN202210922001A CN115283629B CN 115283629 B CN115283629 B CN 115283629B CN 202210922001 A CN202210922001 A CN 202210922001A CN 115283629 B CN115283629 B CN 115283629B
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 72
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 59
- 238000005266 casting Methods 0.000 title claims abstract description 58
- 238000005096 rolling process Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 claims abstract description 77
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 76
- 238000001816 cooling Methods 0.000 claims abstract description 39
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 19
- 238000010008 shearing Methods 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 34
- 230000008018 melting Effects 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 25
- 238000002360 preparation method Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 16
- 239000000047 product Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for preparing nickel-based superalloy by using a double-roll casting and rolling process, which realizes the application of the double-roll casting and rolling process in the field of nickel-based superalloy, has a few preparation flow, is beneficial to the industrial mass production of nickel-based superalloy, and is not only suitable for GH4049 alloy and GH4169 alloy, but also suitable for the production of other nickel-based superalloy; the combination of the vacuum smelting furnace, the vacuum protection cover and the dry ice cooling is adopted, a cooling component, a shearing component and the like are not required to be placed in the vacuum protection cover, the number of components which are required to be placed in the vacuum protection cover can be reduced while the nickel-based superalloy is cooled, and the production operation difficulty and cost of the nickel-based superalloy with high product quality are reduced.
Description
Technical Field
The invention relates to the technical field of metal casting, in particular to a method for preparing nickel-based superalloy by using a double-roll casting and rolling process.
Background
The nickel-based superalloy uses nickel as a matrix (the content is generally more than 50 percent) and has higher strength and good oxidation resistance and gas corrosion resistance in the range of 650-1000 ℃. Nickel-based superalloys are important in the superalloy field, which are widely used in the manufacture of extreme heat components for aviation jet engines, various industrial gas turbines. The turbine blade is mainly made of nickel-based superalloy, and the working environment is worst in the whole engine, and is under the conditions of high temperature, high pressure and high speed rotation. Compared with iron-based superalloy, the nickel-based superalloy has the advantages of higher working temperature, stable structure, less harmful phase and strong oxidation corrosion resistance.
The traditional nickel-based superalloy is produced by casting metal, forging and cogging cast ingot, hot rolling, welding, cold rolling and the like, and the production process has the advantages of large equipment investment, more working procedures, poor surface quality, more cracks, low yield and low production efficiency. In order to improve the production quality and reduce the production cost, development and development of a nickel-based superalloy production process with low production cost and high product quality are urgently required.
The double-roller casting and rolling technology is to directly make the metal melt into semi-finished products or finished blank materials. The process is characterized in that the crystallizer is two rotary casting rollers with water cooling systems, the melt undergoes casting, cooling, crystallization, solidification, rolling, blank ejection and other series of process procedures under the cooling and extrusion actions of the rollers, and finally the required plate is obtained, and the process has the advantages of simple production flow, short production period, high efficiency, low energy consumption and the like.
The method for continuously preparing the nickel-based amorphous alloy thin strip by using the double-roller method in China patent (CN 109822067A) utilizes common industrial raw materials, and is based on the characteristic that a thin strip casting and rolling process can provide continuous and stable solidification environment, and the amorphous forming process has short flow, rapid cooling speed and continuous preparation process.
However, since the working environment of the nickel-base superalloy has high requirements on quality and performance, the existing preparation method cannot meet the industrial production needs, and although the cast-rolling process has a plurality of advantages, a great deal of research and experiments are required for the nickel-base superalloy, and the process for producing the nickel-base superalloy by adopting the cast-rolling process is not reported in the prior art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for preparing nickel-based superalloy by using a double-roll casting and rolling process, which adopts double-roll casting and rolling to realize the preparation of nickel-based superalloy with high product quality, and has high production efficiency and low production cost.
According to one aspect of the invention, the invention provides the following technical scheme:
a method for preparing nickel-based superalloy by using a twin-roll casting and rolling process comprises the following steps:
s1, placing a crucible in a vacuum smelting furnace, placing a nickel-based superalloy raw material into the crucible for melting, and preserving heat for a period of time to ensure that the raw material is completely melted;
s2, placing the tundish and the casting and rolling machine set in a vacuum protection cover, and placing the cooling assembly and the shearing assembly outside the vacuum protection cover; pouring the completely melted alloy liquid into a baked tundish, standing for a period of time, and arranging a heating device in the tundish to heat and preserve the temperature of the alloy liquid in the tundish;
s3, when the temperature of the alloy liquid meets the casting temperature requirement, casting the alloy liquid into water-cooled rollers of a double-roller casting-rolling unit to realize casting-rolling forming of the high-temperature alloy;
s4, cooling a product cast-rolled by the double-roller casting and rolling machine set by adopting dry ice, and controlling the cooling speed to be 600-900 ℃/s;
s5, shearing to obtain the finished product.
As a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S1, the melting temperature is alloy melting point+ (150-250) DEG C, and the heat preservation time is 5-10min; specifically, the melting temperature is, for example, but not limited to, any one or a range between any two of alloy melting point +150 ℃, alloy melting point +160 ℃, alloy melting point +170 ℃, alloy melting point +180 ℃, alloy melting point +190 ℃, alloy melting point +200 ℃, alloy melting point +210 ℃, alloy melting point +220 ℃, alloy melting point +230 ℃, alloy melting point +240 ℃, and alloy melting point +250 ℃; the heat preservation time is any one or a range between any two of 5min, 6min, 7min, 8min, 9min and 10min; the setting of the melting temperature and the heat preservation time ensures the full melting of the nickel-based superalloy;
as a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S1, the vacuum degree of the vacuum melting furnace is kept at 10 -1 pa or less, the vacuum degree was measured every 30 seconds.
As a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S2, the vacuum degree of the vacuum protection cover is kept at 10 -1 pa or less, the vacuum degree was measured every 30 seconds. Through the control and the periodic detection of the vacuum degree, the protection of the nickel-based superalloy production process is realized.
As a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S2, the tundish heating device is an electric heating wire embedded in the tundish refractory material, and the standing time is 60-120S. The standing time is, for example, but not limited to, any one of 60s, 70s, 80s, 90s, 100s, 110s, 120s or a range between any two of them; after pouring the alloy liquid into the baked tundish, standing for a period of time is beneficial to the uniformity of the temperature of the alloy liquid, and the overlong standing time can cause the temperature reduction of the alloy liquid, waste energy and reduce the production efficiency; meanwhile, the electric heating wire embedded in the tundish refractory material is used for heating the alloy liquid, so that the alloy liquid is not polluted while heat is provided.
As a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S3, the condition that the temperature of the alloy liquid meets the casting temperature requirement means that the temperature of the alloy liquid is alloy melting point+ (150-200) DEG C; specifically, the alloy liquid temperature is, for example, but not limited to, any one or a range between any two of alloy melting point +150 ℃, alloy melting point +160 ℃, alloy melting point +170 ℃, alloy melting point +180 ℃, alloy melting point +190 ℃, and alloy melting point +200 ℃; the arrangement of the temperature of the alloy liquid ensures the smooth proceeding of the casting and rolling process.
As a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S3, the shape of the water-cooled roll may be adjusted according to the product, and parameters such as rolling pressure and casting speed may be adjusted according to the product.
As a preferable scheme of the method for preparing the nickel-based superalloy by utilizing the twin-roll casting and rolling process, the invention comprises the following steps: in the step S4, the cooling speed is controlled to be 700-900 ℃/S; preferably, the cooling rate is controlled to be 700-800 ℃/s; the applicant researches find that the too small cooling speed (less than 600 ℃/s) cannot meet the cooling and forming requirements of the nickel-based superalloy product, and the too large cooling speed (more than 900 ℃/s) can cause that part of dry ice cannot participate in the cooling process, so that the effective utilization of the dry ice cannot be realized, and the waste of the dry ice is caused; specifically, the cooling rate is, for example, but not limited to, any one or any two of 700 ℃/s, 710 ℃/s, 720 ℃/s, 730 ℃/s, 740 ℃/s, 750 ℃/s, 760 ℃/s, 770 ℃/s, 780 ℃/s, 790 ℃/s, 800 ℃/sA range therebetween; the dry ice is adopted for cooling, and the dry ice is directly sprayed on the surface of the nickel-based superalloy material, so that the temperature of a nickel-based superalloy product can be rapidly reduced, and the solid dry ice sprayed on the surface of the thermal state nickel-based superalloy material can be gasified to form CO on the surface of the nickel-based superalloy material 2 The gas is used for protecting atmosphere and playing an anti-oxidation role, so that a cooling assembly, a shearing assembly and the like do not need to be placed in a vacuum protection cover; the nickel-based superalloy material is cooled, and meanwhile, the number of components needing to be put into a vacuum protection cover is reduced, so that the production cost is reduced. The existing high-temperature alloy twin-roll casting and rolling process needs to put a tundish, a casting and rolling unit, a cooling component, a shearing component and the like into a vacuum protection cover, and as all the functional components for realizing the process are put into the vacuum protection cover, the vacuum protection cover to be prepared is huge in volume, and the production cost is increased; secondly, because the components are all positioned in the vacuum protection cover, individual working procedures are difficult to operate, the industrial production is inconvenient, and the progress of the technology is hindered.
According to another aspect of the invention, the invention provides the following technical scheme:
the nickel-based superalloy is prepared by the method for preparing the nickel-based superalloy by using a double-roll casting and rolling process.
As a preferable scheme of the nickel-based superalloy, the invention comprises the following steps: the nickel-base superalloys include, but are not limited to, GH4049 alloys, GH4169 alloys.
The beneficial effects of the invention are as follows:
the invention provides a method for preparing nickel-based superalloy by using a double-roll casting and rolling process, which realizes the application of the double-roll casting and rolling process in the field of nickel-based superalloy, has a few preparation flow, is beneficial to the industrial mass production of nickel-based superalloy, and is not only suitable for GH4049 alloy and GH4169 alloy, but also suitable for the production of other nickel-based superalloy; the combination of the vacuum smelting furnace, the vacuum protection cover and the dry ice cooling is adopted, a cooling component, a shearing component and the like are not required to be placed in the vacuum protection cover, the number of components which are required to be placed in the vacuum protection cover can be reduced while the nickel-based superalloy is cooled, and the production operation difficulty and cost of the nickel-based superalloy with high product quality are reduced.
Detailed Description
The following description will be made clearly and fully with reference to the technical solutions in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a method for preparing nickel-based superalloy by using a double-roll casting and rolling process, which adopts the combination of a vacuum smelting furnace, a vacuum protection cover and dry ice cooling, and does not need to put a cooling component, a shearing component and the like into the vacuum protection cover, so that the number of components needing to be put into the vacuum protection cover can be reduced while the cooling of the nickel-based superalloy is realized, and the production difficulty and cost of the nickel-based superalloy with high product quality are reduced; the application of the double-roller casting and rolling process in the field of nickel-based superalloy is realized, the preparation flow is less, the industrial mass production of the nickel-based superalloy is facilitated, and the method is not only suitable for the production of GH4049 alloy and GH4169 alloy, but also suitable for the production of other nickel-based superalloys.
Hereinafter, the GH4049 alloy and the GH4169 alloy will be specifically described as examples.
Example 1
A preparation method of GH4049 alloy, comprising the following steps:
s1, placing a crucible in a vacuum melting furnace, placing GH4049 alloy raw materials into the crucible, heating to 1560 ℃ for melting, and preserving heat for 8min to ensure that the raw materials are completely melted;
s2, placing the tundish and the casting and rolling machine set in a vacuum protection cover, vacuumizing the vacuum protection cover, and keeping the vacuum degree at 10 -1 pouring the completely melted GH4049 alloy liquid into a baked tundish below pa, standing for 90s, and heating and preserving heat of the GH4049 alloy liquid in the tundish by adopting a tundish heating device while standing;
s3, when the temperature of the alloy liquid reaches 1520 ℃ and the standing time reaches the requirement, casting the alloy liquid into a water-cooled roller of a double-roller casting-rolling unit to realize casting-rolling forming of the high-temperature alloy;
s4, cooling a product cast-rolled by the double-roller casting and rolling machine set by adopting dry ice, and controlling the cooling speed to 760 ℃/s;
s5, shearing to prepare the GH4049 alloy strip with the thickness of 1.2 mm.
Comparative example 1.1
Comparative example 1.1 differs from example 1 in that water cooling is used in step S4.
Comparative example 1.2
Comparative example 1.2 differs from example 1 only in that the alloy liquid was cast into the water-cooled rolls of the casting mill at a alloy liquid temperature of 1450 ℃.
Example 2
A method for preparing GH4169 alloy, comprising the following steps:
s1, placing a crucible in a vacuum melting furnace, placing GH4169 alloy raw materials into the crucible, heating to 1500 ℃ for melting, and preserving heat for 5min to ensure that the raw materials are completely melted;
s2, placing the tundish and the casting and rolling machine set in a vacuum protection cover, vacuumizing the vacuum protection cover, and keeping the vacuum degree at 10 -1 pouring the completely melted GH4169 alloy liquid into a baked tundish below pa, standing for 120s, and heating and preserving the temperature of the GH4169 alloy liquid in the tundish by adopting a tundish heating device while standing;
s3, when the temperature of the alloy liquid reaches 1500 ℃ and the standing time reaches the requirement, casting the alloy liquid into water-cooled rollers of a double-roller casting-rolling unit to realize casting-rolling forming of high-temperature alloy;
s4, cooling a product cast-rolled by the double-roller casting and rolling machine set by adopting dry ice, and controlling the cooling speed of the GH4169 alloy material to be 730 ℃/s;
s5, shearing to prepare the GH4169 alloy strip with the thickness of 0.8 mm.
Comparative example 2.1
Comparative example 2.1 differs from example 2 in that water cooling is used in step S4.
Comparative example 2.2
Comparative example 2.2 differs from example 2 only in that the alloy liquid was cast into the water-cooled rolls of the casting mill at a liquid temperature of 1370 ℃.
The nickel-base superalloy materials prepared by adopting examples 1-2 and comparative examples 1.1-1.2 and 2.1-2.2 were tested and analyzed, and the results are shown in Table 1.
TABLE 1 Nickel-based superalloy Properties prepared in examples and comparative examples of the present invention
| Alloy liquid casting temperature/°c | Cooling medium | Defect case | Coagulated tissue | |
| Example 1 | 1520 | Dry ice | Good surface forming and no defect | Uniform tissue distribution |
| Comparative example 1.1 | 1520 | Water and its preparation method | The surface has defects such as pits | Uneven tissue distribution |
| Comparative example 1.2 | 1450 | Dry ice | Defect-free surface | Uneven tissue distribution |
| Example 2 | 1500 | Dry ice | Good surface forming and no defect | Uniform tissue distribution |
| Comparative example 2.1 | 1500 | Water and its preparation method | The surface has defects such as pits | Uneven tissue distribution |
| Comparative example 2.2 | 1370 | Dry ice | Defect-free surface | Uneven tissue distribution |
As can be seen from table 1: the method adopts dry ice for cooling and the alloy liquid temperature range limited by the invention for casting, and the nickel-based superalloy material prepared by the double-roller casting and rolling process and parameters thereof has good surface forming, no defect occurrence and uniform tissue distribution, and meets the basic quality requirement of the nickel-based superalloy material.
In the cooling stage, dry ice is not used for cooling, oxidation phenomenon occurs on the surface of the nickel-based superalloy, so that defects such as pits appear on the surface (such as comparative examples 1.1 and 2.1), meanwhile, the difference of solidification speeds of different parts of the nickel-based superalloy is large due to mismatching of casting temperature and cooling speed, and the phenomenon that solidification structures are unevenly distributed (such as comparative examples 1.2 and 2.2) cannot meet the basic requirement of the nickel-based superalloy on quality.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the content of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. The method for preparing the nickel-based superalloy by using a twin-roll casting and rolling process is characterized by comprising the following steps of:
s1, placing a crucible in a vacuum smelting furnace, placing a nickel-based superalloy raw material into the crucible for melting, and preserving heat for a period of time to ensure that the raw material is completely melted; the melting temperature is alloy melting point+ (150-250) DEG C, and the heat preservation time is 5-10min;
s2, placing the tundish and the casting and rolling machine set in a vacuum protection cover, and placing the cooling assembly and the shearing assembly outside the vacuum protection cover; pouring the completely melted alloy liquid into a baked tundish, standing for a period of time, and arranging a heating device in the tundish to heat and preserve the temperature of the alloy liquid in the tundish;
s3, when the temperature of the alloy liquid meets the casting temperature requirement, casting the alloy liquid into water-cooled rollers of a double-roller casting-rolling unit to realize casting-rolling forming of the high-temperature alloy; the condition that the temperature of the alloy liquid meets the casting temperature requirement means that the temperature of the alloy liquid is alloy melting point+ (150-200) DEG C;
s4, cooling a product cast-rolled by the double-roller casting and rolling machine set by adopting dry ice, and controlling the cooling speed to be 600-900 ℃/s;
s5, shearing to obtain the finished product.
2. The method for preparing a nickel-base superalloy by a twin roll casting process according to claim 1, wherein in step S1, the vacuum degree of the vacuum melting furnace is maintained at 10 -1 pa or less, and vacuum degree is detected every 20-40 s.
3. The method for preparing a nickel-base superalloy by a twin roll casting process according to claim 1, wherein the vacuum degree of the vacuum protecting cover is maintained at 10 in step S2 -1 pa or less, and vacuum degree is detected every 20-40 s.
4. The method for preparing a nickel-base superalloy by a twin roll casting process according to claim 1, wherein in step S2, the tundish heating device is an electric heating wire embedded in the tundish refractory, and the standing time is 60-120S.
5. The method for preparing a nickel-base superalloy by a twin roll casting process according to claim 1, wherein in step S4, the cooling rate is controlled to be 700-900 ℃/S.
6. The method for preparing a nickel-base superalloy by a twin roll casting process according to claim 1, wherein in step S4, the cooling rate is controlled to be 700-800 ℃/S.
7. A nickel-base superalloy prepared by the method of any of claims 1-6 using a twin roll casting process.
8. The nickel-base superalloy of claim 7, wherein the nickel-base superalloy is a GH4049 alloy or a GH4169 alloy.
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| WO2020052625A1 (en) * | 2018-09-14 | 2020-03-19 | 宝山钢铁股份有限公司 | Method for producing ultra-thin hot-rolled strip steel |
| CN109822067A (en) * | 2019-04-08 | 2019-05-31 | 东北大学 | A kind of method that Ni-based non-crystalline thin-band is continuously prepared |
| CN109967703A (en) * | 2019-04-08 | 2019-07-05 | 东北大学 | A method of with a thickness of 80~1500 μm of wide cut amorphous thin ribbons, continuously big cooling rate is efficiently prepared |
| WO2020206610A1 (en) * | 2019-04-08 | 2020-10-15 | 东北大学 | Continuous preparation method for zirconium based amorphous thin strip |
| CN113005379A (en) * | 2019-12-20 | 2021-06-22 | 佛山科学技术学院 | Heat treatment method of nickel-based single crystal superalloy |
| CN114107768A (en) * | 2020-08-26 | 2022-03-01 | 宝山钢铁股份有限公司 | Preparation method of novel high-performance 7XXX aluminum alloy thin strip by jet casting |
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