CN115502416A - Heat treatment method for GH4099 high-temperature alloy formed by selective laser melting - Google Patents
Heat treatment method for GH4099 high-temperature alloy formed by selective laser melting Download PDFInfo
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Abstract
The application discloses a heat treatment method for GH4099 high-temperature alloy formed by selective laser melting, which comprises the following steps: setting hot isostatic pressing parameters, and carrying out hot isostatic pressing treatment on the GH4099 high-temperature alloy formed by selective laser melting based on the hot isostatic pressing parameters so as to eliminate the defect that the inside of the GH4099 high-temperature alloy influences the fine density of the GH4099 high-temperature alloy; setting a solid solution treatment parameter and an aging treatment parameter, carrying out solid solution treatment on the GH4099 high-temperature alloy based on the solid solution treatment parameter, and carrying out aging treatment on the GH4099 high-temperature alloy based on the aging treatment parameter to obtain the treated GH4099 high-temperature alloy. The method solves the technical problem that the performance of GH4099 high-temperature alloy formed by selective laser melting in the prior art cannot meet the actual requirement.
Description
Technical Field
The application relates to the technical field of material processing, in particular to a heat treatment method for GH4099 high-temperature alloy formed by selective laser melting.
Background
GH4099 is a typical nickel-based superalloy with excellent high-temperature mechanical properties, creep resistance and corrosion resistance. The GH4099 high-temperature alloy has good high-temperature mechanical properties after solid solution aging treatment, can be used for a long time at the temperature of below 900 ℃, has the maximum working temperature of 1000 ℃, and is an important metal material in the aerospace field. The GH4099 alloy mainly comprises Ni and Cr elements, is subjected to solid solution strengthening by W, mo, co and other elements, is subjected to aging strengthening by Al and Ti, is subjected to grain boundary strengthening by B, and forms a complex structure which takes a gamma phase as a matrix and contains other compound phases after solid solution and aging treatment, so that the use requirement of the aerospace high-temperature structural member can be met. The selective laser melting and forming technology is an additive manufacturing technology which takes laser as an energy source and continuously melts, solidifies and stacks metal powder layer by layer to obtain a product, has the advantages of high efficiency, high precision, high design freedom degree and low cost, can form high-temperature alloy, titanium alloy, aluminum alloy and other materials, and is widely applied to the aerospace field at present.
The GH4099 high-temperature alloy formed by selective laser melting can be applied to high-temperature structural members such as rudder wings, engine combustion chambers and the like. The GH4099 high-temperature alloy obtained through selective laser melting and forming is a deposited GH4099 high-temperature alloy, and the deposited GH4099 high-temperature alloy has defects such as holes, microcracks and the like inside, the density of the alloy is reduced by the internal defects, stress concentration occurs when the structural member is in service, the internal defects become crack sources, and the strength, plasticity and fatigue performance of the structural member are reduced. In addition, the deposited GH4099 superalloy is a submicron cellular structure, which is beneficial to improving the room-temperature mechanical property of the alloy, but reduces the high-temperature strength and plasticity of the alloy, and cannot meet the use requirement, as shown in FIGS. 1A and 1B, wherein FIG. 1A shows a schematic diagram of the inside of the GH4099 superalloy formed by selective laser melting in a direction perpendicular to the forming direction; FIG. 1B shows a schematic diagram of the inside of the GH4099 superalloy formed by selective laser melting and forming parallel to the forming direction.
Disclosure of Invention
The technical problem that this application was solved is: aiming at the problem that the performance of GH4099 high-temperature alloy formed by selective laser melting in the prior art cannot meet the actual requirement. According to the scheme provided by the embodiment of the application, the defects of holes, microcracks and the like of the GH4099 high-temperature alloy formed by selective laser melting are eliminated through hot isostatic pressing treatment, the fineness density of the GH4099 high-temperature alloy is improved, and the mechanical property of the alloy is improved; and/or the cellular structure of the GH4099 high-temperature alloy formed by selective laser melting is converted into a fine isometric crystal structure through solution treatment and aging treatment, a large number of fine and dispersed gamma' strengthening phases are formed in a matrix, the toughness and the plasticity of the GH4099 high-temperature alloy are improved, and the performance of the GH4099 high-temperature alloy is further improved.
In a first aspect, an embodiment of the present application provides a heat treatment method for selective laser melting forming of GH4099 superalloy, where the method includes:
setting hot isostatic pressing parameters, and carrying out hot isostatic pressing treatment on the GH4099 high-temperature alloy formed by selective laser melting based on the hot isostatic pressing parameters so as to eliminate the defect that the fine density of the GH4099 high-temperature alloy is influenced in the GH4099 high-temperature alloy; and/or
Setting solid solution treatment parameters and aging treatment parameters, carrying out solid solution treatment on the GH4099 high-temperature alloy based on the solid solution treatment parameters, and carrying out aging treatment on the GH4099 high-temperature alloy based on the aging treatment parameters to obtain the treated GH4099 high-temperature alloy.
Optionally, the hot isostatic pressing parameters comprise: hot isostatic pressing temperature, pressure and first heat preservation time, wherein the hot isostatic pressing temperature ranges from 1000 ℃ to 1200 ℃, the first heat preservation time ranges from 2 hours to 4 hours, and the pressure ranges from 90MPa to 130MPa;
the solid solution treatment parameters comprise a first heating rate, a first solid solution temperature, a second heat preservation time, a first cooling speed and a first vacuum degree; wherein the first temperature rise rate value range is 2 ℃/min-15 ℃/min, the first solid solution temperature value range is 1100 ℃ -1300 ℃, the second heat preservation time value range is 1 hour-3 hours, the first cooling speed value range is 55 ℃/min-120 ℃/min, the first vacuum degree precision is 10 DEG C -2 Pa。
The aging treatment parameters comprise a second heating rate, a second solid solution temperature, a third heat preservation time, a second cooling speed and a second vacuum degree; wherein the second heating rate value range is 5 ℃/min to 10 ℃/min, the second solid solution temperature value range is 720 ℃ to 780 ℃, the third heat preservation time value range is 6 hours to 10 hours, the second cooling rate value range is 10 ℃/min to 20 ℃/min, and the second vacuum degree precision is 10 DEG C -2 Pa。
Optionally, wherein the hot isostatic pressing temperature is set at 1050 ℃, the pressure is 90MPa, and the first holding time is 2 hours.
Optionally, wherein the hot isostatic pressing temperature is set at 1200 ℃, the pressure is 100MPa, and the first heat preservation is set for 3 hours.
Optionally, hot isostatic pressing treatment is carried out on the GH4099 high-temperature alloy formed by selective laser melting based on the hot isostatic pressing treatment parameters, and the hot isostatic pressing treatment comprises the following steps:
setting the temperature in a high-temperature high-pressure sealed container for realizing hot isostatic pressing treatment to be 1200 ℃ and the pressure to be 100MPa;
and (3) placing the GH4099 high-temperature alloy in the high-temperature high-pressure sealed container, and preserving heat for 3 hours to realize hot isostatic pressing treatment on the GH4099 high-temperature alloy.
Optionally, solution treating the GH4099 superalloy based on the solution treatment parameters comprises: converting submicron cellular structure in the GH4099 superalloy into axial crystal structure.
Optionally, the first temperature rise rate is set to be 2 ℃/min, the first solid solution temperature is 1100 ℃, the second heat preservation time is 1 hour, the first cooling rate is 55 ℃/min, and the first vacuum degree is 5 × 10 -2 Pa。
Optionally, the first temperature rise rate is set to be 5 ℃/min, the first solid solution temperature is 1250 ℃, the second heat preservation time is 1.5 hours, the first cooling speed is 65 ℃/min, and the first vacuum degree is 5 × 10 - 2 Pa。
Optionally, the second heating rate is set to be in a range of 5 ℃/min, the second solid solution temperature is set to be in a range of 720 ℃, the third heat preservation time is set to be in a range of 6 hours, the second cooling rate is set to be in a range of 10 ℃/min, and the second vacuum degree precision is set to be 5 × 10 -2 Pa。
Optionally, the second temperature rise rate is set to be in a range of 5 ℃/min, the second solid solution temperature is set to be in a range of 730 ℃, the third heat preservation time is set to be in a range of 7 hours, the second cooling rate is set to be in a range of 10 ℃/min, and the second vacuum degree precision is 5 × 10 -2 Pa。
In the scheme provided by the embodiment of the application, the defects of holes, microcracks and the like of GH4099 high-temperature alloy formed by selective laser melting are eliminated through hot isostatic pressing treatment, the thinning density of the GH4099 high-temperature alloy is improved, and the mechanical property of the alloy is improved; and/or the cellular structure of the GH4099 high-temperature alloy formed by selective laser melting is converted into a fine isometric crystal structure through solution treatment and aging treatment, a large number of fine and dispersed gamma' strengthening phases are formed in a matrix, the toughness and the plasticity of the GH4099 high-temperature alloy are improved, and the performance of the GH4099 high-temperature alloy is further improved.
Drawings
FIG. 1A shows a schematic diagram of the inside of a GH4099 superalloy formed by selective laser melting in a direction perpendicular to the forming direction;
FIG. 1B shows a schematic diagram of the inside of a GH4099 superalloy formed by selective laser melting in a direction parallel to the forming direction;
fig. 2 is a schematic flow chart of a heat treatment method for selective laser melting GH4099 superalloy provided by an embodiment of the present application.
Detailed Description
In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to better understand the technical solutions, the technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The following provides a further detailed description of a heat treatment method for GH4099 superalloy with selective laser melting formation according to an embodiment of the present application, and the detailed implementation manner of the method may include the following steps (the method flow is shown in fig. 2):
step 201, setting hot isostatic pressing parameters, and carrying out hot isostatic pressing on the GH4099 high-temperature alloy formed by selective laser melting based on the hot isostatic pressing parameters so as to eliminate the defect that the inside of the GH4099 high-temperature alloy influences the fine density of the GH4099 high-temperature alloy.
As can be seen from the above-mentioned FIGS. 1A and 1B, defects affecting the fine density of the GH4099 superalloy, such as holes, bubbles, microcracks, etc., may or may not exist in the GH4099 superalloy obtained by the selective laser melting forming technique. The hot isostatic pressing technology is one of modern material forming technologies and is a branch of the isostatic pressing technology. Isostatic pressing techniques are generally classified into cold isostatic pressing, warm isostatic pressing and hot isostatic pressing according to the molding and consolidation temperatures. Hot isostatic pressing is to apply isotropic static pressure to the powder or sintered blank (or part) to be compacted in a high-temperature and high-pressure sealed container by using high-pressure gas as a medium to form a high-density blank or part.
Since the hot isostatic pressing is performed in the high-temperature high-pressure sealed container, when the hot isostatic pressing is performed on the GH4099 high-temperature alloy formed by selective laser melting, it is necessary to set hot isostatic pressing parameters, for example, environmental parameters (such as temperature and pressure in the high-temperature high-pressure sealed container when the hot isostatic pressing is performed) and/or other parameters (such as time parameters) in the high-temperature high-pressure sealed container.
By way of example, setting hot isostatic pressing parameters includes: hot isostatic pressing temperature, pressure and first heat preservation time, wherein the hot isostatic pressing temperature ranges from 1000 ℃ to 1200 ℃, the first heat preservation time ranges from 2 hours to 4 hours, and the pressure ranges from 90MPa to 130MPa;
also by way of example, the hot isostatic pressing temperature is set at 1050 ℃, the pressure is 90MPa, and the first holding time is 2 hours. Or setting the hot isostatic pressing temperature to be 1200 ℃, the pressure to be 100MPa and the first heat preservation to be 3 hours.
By way of further example, hot isostatic pressing treatment is performed on the GH4099 high-temperature alloy formed by selective laser melting based on the hot isostatic pressing treatment parameters, and the hot isostatic pressing treatment comprises the following steps: setting the temperature in a high-temperature high-pressure sealed container for realizing hot isostatic pressing treatment to be 1200 ℃ and the pressure to be 100MPa; and (3) placing the GH4099 high-temperature alloy in the high-temperature high-pressure sealed container, and preserving heat for 3 hours to realize hot isostatic pressing treatment on the GH4099 high-temperature alloy.
Furthermore, by carrying out hot isostatic pressing treatment on the GH4099 high-temperature alloy formed by selective laser melting, the defect that the inside of the GH4099 high-temperature alloy influences the fineness-causing density of the GH4099 high-temperature alloy can be eliminated, and the fineness-causing density of the GH4099 high-temperature alloy is improved.
Step 202, setting a solid solution treatment parameter and an aging treatment parameter, carrying out solid solution treatment on the GH4099 high-temperature alloy based on the solid solution treatment parameter, and carrying out aging treatment on the GH4099 high-temperature alloy based on the aging treatment parameter to obtain the treated GH4099 high-temperature alloy.
In the scheme provided by the embodiment of the application, the GH4099 superalloy formed by selective laser melting is a submicron cellular structure, and the structure is beneficial to improving the room-temperature mechanical property of the alloy, but reduces the high-temperature strength and plasticity of the alloy, and cannot meet the use requirement. Therefore, in order to improve the high-temperature strength and plasticity of the GH4099 superalloy, the GH4099 superalloy needs to be subjected to solution treatment and aging treatment. For ease of understanding, the processes of solution treatment and aging treatment will be briefly described below.
1. Solution treatment
The solution treatment refers to a heat treatment process for heating the alloy to a high temperature and keeping the temperature in a single zone, so that the excess phase is fully dissolved in the solid solution and then is rapidly cooled to obtain a supersaturated solid solution. The solution treatment makes various phases in the alloy fully dissolved, strengthens the solid solution, improves and enhances the plasticity and toughness of the alloy, eliminates stress and softens, and is ready for precipitation hardening treatment.
Further, in order to realize the solution treatment, it is necessary to set a solution treatment parameter. The solution treatment parameters comprise, for example, a first temperature rise rate, a first solution temperature, a second holding time, a first cooling rate and a first vacuum degree; wherein the first temperature rise rate value range is 2 ℃/min-15 ℃/min, the first solid solution temperature value range is 1100 ℃ -1300 ℃, the second heat preservation time value range is 1 hour-3 hours, the first cooling speed value range is 55 ℃/min-120 ℃/min, the first vacuum degree precision is 10 DEG C -2 Pa。
For example, the first temperature rise rate is set to be 2 ℃/min, the first solid solution temperature is 1100 ℃, the second heat preservation time is 1 hour, the first cooling rate is 55 ℃/min, and the first vacuum degree is 5 × 10 -2 Pa. Also by way of example, the first temperature rise rate is set to 5 ℃/min, and the first solid solution temperature is set to1250 ℃, the second heat preservation time is 1.5 hours, the first cooling speed is 65 ℃/min and the first vacuum degree is 5 multiplied by 10 -2 Pa。
2. Aging treatment
The aging treatment refers to a heat treatment process that the performance, shape and size of an alloy workpiece are changed along with time after the alloy workpiece is subjected to solution treatment, cold plastic deformation or casting and forging and is placed at a higher temperature or room temperature. The purpose of aging treatment is to eliminate the internal stress of the workpiece, stabilize the structure and the size and improve the mechanical property.
Further, in order to realize the aging treatment, aging treatment parameters need to be set. The aging treatment parameters comprise a second heating rate, a second solid solution temperature, a third heat preservation time, a second cooling speed and a second vacuum degree; wherein the second heating rate is 5 ℃/min to 10 ℃/min, the second solid solution temperature is 720 ℃ to 780 ℃, the third heat preservation time is 6 hours to 10 hours, the second cooling rate is 10 ℃/min to 20 ℃/min, and the second vacuum degree precision is 10 to 2Pa.
For example, the second temperature-raising rate is set to be in a range of 5 ℃/min, the second solid-solution temperature is set to be in a range of 720 ℃, the third heat-preservation time is set to be in a range of 6 hours, the second cooling rate is set to be in a range of 10 ℃/min, and the second vacuum degree precision is set to be 5 × 10 ℃ -2 Pa. Also by way of example, the second heating rate is set to be in a range of 5 ℃/min, the second solution temperature is set to be in a range of 730 ℃, the third heat preservation time is set to be in a range of 7 hours, the second cooling rate is set to be in a range of 10 ℃/min, and the second vacuum degree precision is set to be 5 × 10 -2 Pa。
The sub-micron cellular structure in the GH4099 high-temperature alloy is converted into fine isometric crystals through solution aging treatment, and a fine and dispersedly distributed gamma' strengthening phase is formed in the matrix, so that a GH4099 high-temperature alloy product formed by selective laser melting with excellent room-temperature and high-temperature mechanical properties is obtained.
In the solution provided in the embodiments of the present application, the hot isostatic pressing treatment, the solution treatment, and the aging treatment for the GH4099 superalloy can be used alone or in combination according to actual needs or requirements, and are not limited herein. In addition, different treatment parameters can be set for hot isostatic pressing treatment, solid solution treatment and aging treatment of the GH4099 high-temperature alloy according to actual requirements, and the performances of the treated GH4099 high-temperature alloy obtained by aiming at the different treatment parameters are different.
For example, the hot isostatic pressing treatment is carried out on GH4099 high-temperature alloy formed by selective laser melting, the hot isostatic pressing temperature is 1050 ℃, the heat preservation time is 2h, and the pressure is 90MPa; carrying out solution treatment on GH4099 high-temperature alloy formed by selective laser melting, wherein the heating rate is 2 ℃/min, the solution temperature is 1100 ℃, the heat preservation time is 1h, the cooling rate is 55 ℃/min, and the vacuum degree is 5 multiplied by 10 -2 Pa; aging treatment is carried out on GH4099 high-temperature alloy formed by selective laser melting, the heating rate is 5 ℃/min, the solid solution temperature is 720 ℃, the heat preservation time is 6h, the cooling rate is 10 ℃/min, and the vacuum degree is 5 multiplied by 10 -2 Pa. Experiments prove that under the treatment parameters, the density of the GH4099 high-temperature alloy formed by selective laser melting through the strengthening heat treatment is 99.99%, the tensile strength at room temperature of the alloy is 1120MPa, the yield strength is 813MPa, the elongation is 31%, the tensile strength at 950 ℃ is 306MPa, the yield strength is 223MPa, and the elongation is 23%.
For another example, the hot isostatic pressing treatment is carried out on GH4099 high-temperature alloy formed by selective laser melting, the hot isostatic pressing temperature is 1200 ℃, the heat preservation time is 3h, and the pressure is 100MPa; carrying out solution treatment on GH4099 high-temperature alloy formed by selective laser melting, wherein the heating rate is 5 ℃/min, the solution temperature is 1250 ℃, the heat preservation time is 1.5h, the cooling speed is 65 ℃/min, and the vacuum degree is 5 multiplied by 10 -2 Pa; aging treatment is carried out on GH4099 high-temperature alloy formed by selective laser melting, the heating rate is 5 ℃/min, the solid solution temperature is 730 ℃, the heat preservation time is 7h, the cooling rate is 10 ℃/min, the vacuum degree is 5 multiplied by 10 -2 Pa. Experiments prove that the density of GH4099 high-temperature alloy formed by selective laser melting and forming under the treatment parameters and through the strengthening heat treatment is 99.99%, the tensile strength of the alloy at room temperature is 1150MPa, the yield strength is 825MPa, the elongation is 33%, and the tensile strength at 950 ℃ is 950 DEG C310MPa, yield strength of 215MPa and elongation of 21 percent.
In the scheme provided by the embodiment of the application, the defects of holes, microcracks and the like of GH4099 high-temperature alloy formed by selective laser melting are eliminated through hot isostatic pressing treatment, the thinning density of the GH4099 high-temperature alloy is improved, and the mechanical property of the alloy is improved; and/or the cellular structure of the GH4099 high-temperature alloy formed by selective laser melting is converted into a fine isometric crystal structure through solution treatment and aging treatment, a large number of fine and dispersed gamma' strengthening phases are formed in a matrix, the toughness and the plasticity of the GH4099 high-temperature alloy are improved, and the performance of the GH4099 high-temperature alloy is further improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A heat treatment method for GH4099 high-temperature alloy formed by selective laser melting is characterized by comprising the following steps:
setting hot isostatic pressing parameters, and carrying out hot isostatic pressing treatment on the GH4099 high-temperature alloy formed by selective laser melting based on the hot isostatic pressing parameters so as to eliminate the defect that the fine density of the GH4099 high-temperature alloy is influenced in the GH4099 high-temperature alloy; and/or
Setting a solid solution treatment parameter and an aging treatment parameter, carrying out solid solution treatment on the GH4099 high-temperature alloy based on the solid solution treatment parameter, and carrying out aging treatment on the GH4099 high-temperature alloy based on the aging treatment parameter to obtain the treated GH4099 high-temperature alloy.
2. The method of claim 1, wherein the hot isostatic pressing parameters comprise: hot isostatic pressing temperature, pressure and first heat preservation time, wherein the hot isostatic pressing temperature ranges from 1000 ℃ to 1200 ℃, the first heat preservation time ranges from 2 hours to 4 hours, and the pressure ranges from 90MPa to 130MPa;
the solid solution treatment parameters comprise a first heating rate, a first solid solution temperature, a second heat preservation time, a first cooling speed and a first vacuum degree; wherein the first heating rate value range is 2 ℃/min to 15 ℃/min, the first solid solution temperature value range is 1100 ℃ to 1300 ℃, the second heat preservation time value range is 1 hour to 3 hours, the first cooling rate value range is 55 ℃/min to 120 ℃/min, and the first vacuum degree precision is 10 to 2Pa;
the aging treatment parameters comprise a second heating rate, a second solid solution temperature, a third heat preservation time, a second cooling speed and a second vacuum degree; wherein the second heating rate value range is 5 ℃/min to 10 ℃/min, the second solid solution temperature value range is 720 ℃ to 780 ℃, the third heat preservation time value range is 6 hours to 10 hours, the second cooling rate value range is 10 ℃/min to 20 ℃/min, and the second vacuum degree precision is 10 DEG C -2 Pa。
3. The method of claim 2, wherein the hot isostatic pressing temperature is set at 1050 ℃, the pressure is set at 90MPa, and the first holding time is set at 2 hours.
4. The method of claim 2, wherein the hot isostatic pressing temperature is set at 1200 ℃, the pressure is set at 100MPa, and the first holding time is set at 3 hours.
5. The method of claim 3, wherein hot isostatic pressing the selectively laser melted GH4099 high temperature alloy based on the hot isostatic pressing parameters comprises:
setting the temperature in a high-temperature high-pressure sealed container for realizing hot isostatic pressing treatment to be 1200 ℃ and the pressure to be 100MPa;
and (3) placing the GH4099 high-temperature alloy in the high-temperature high-pressure sealed container, and preserving heat for 3 hours to realize hot isostatic pressing treatment on the GH4099 high-temperature alloy.
6. The method of any one of claims 2 to 5, wherein the solution treatment of the GH4099 superalloy based on the solution treatment parameters comprises:
converting submicron cellular structure in the GH4099 superalloy into axial crystal structure.
7. The method according to any one of claims 2 to 5, wherein the first temperature rise rate is set to 2 ℃/min, the first solid-solution temperature is set to 1100 ℃, the second holding time is set to 1 hour, the first cooling rate is set to 55 ℃/min and the first vacuum degree is set to 5 x 10 -2 Pa。
8. The method according to any one of claims 2 to 5, wherein the first temperature raising rate is set to 5 ℃/min, the first solid-solution temperature is 1250 ℃, the second holding time is 1.5 hours, the first cooling rate is set to 65 ℃/min and the first vacuum degree is set to 5 x 10 -2 Pa。
9. The method according to any one of claims 2 to 5, wherein the second temperature rise rate is set to be in a range of 5 ℃/min, the second solid solution temperature is set to be in a range of 720 ℃, the third heat preservation time is set to be in a range of 6 hours, the second cooling rate is set to be in a range of 10 ℃/min, and the second vacuum degree precision is 5 x 10 DEG C -2 Pa。
10. The method according to any one of claims 2 to 5, wherein the second temperature rise rate is set to be in a range of 5 ℃/min, the second solid solution temperature is set to be in a range of 730 ℃, the third holding time is set to be in a range of 7 hours, the second cooling rate is set to be in a range of 10 ℃/min, and the second vacuum degree precision is 5 x 10 -2 Pa。
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