Ultrahigh-temperature alloy added with ceramic phase and compositely toughened by utilizing ultrasonic waves and preparation method of ultrahigh-temperature alloy

Abstract

The invention discloses a superhigh-temperature alloy added with a ceramic phase and compositely toughened by ultrasonic waves and a preparation method of the superhigh-temperature alloy, and relates to the superhigh-temperature alloy toughened by the ultrasonic waves and the preparation method of the superhigh-temperature alloy. In order to solve the problem that an existing niobium-silicon-based ultrahigh-temperature alloy is low in room-temperature fracture toughness, the ultrahigh-temperature alloy toughened through ultrasonic waves is composed of Nb, Si, Ti, Zr, Al and a ceramic phase HfC, and the chemical formula of the ultrahigh-temperature alloy is NbSiTiZrAlHfC. An ultrasonic treatment method is adopted for preparation, the ultrasonic acting power is 20 kW, and the acting time is 100 s. After the Nb-Si-based ultrahigh-temperature alloy prepared by the method is subjected to ultrasonic treatment, the microstructure of the alloy is obviously optimized, and then the room-temperature fracture toughness of the alloy is induced to be improved. The method is applied to the field of high-temperature alloys.

Description

Technical Field

[0001] The invention relates to an ultra-high temperature alloy which is added with a ceramic phase and toughened by ultrasonic composite and a preparation method thereof. Background Art

[0002] In order to improve the working efficiency of aircraft engines and reduce energy consumption, it is necessary to ensure that good strength and rigidity are maintained while further increasing the operating temperature. This puts higher requirements on the high-temperature structural materials used in the hot end components, turbine blades. Since the operating temperature of Ni-based ultra-high temperature alloys has reached 1150°C, which is 85% of its melting point, there is an urgent need to develop a new type of ultra-high temperature structural material.

[0003] Niobium-silicon-based alloys have entered the field of vision of many scientific researchers due to their high operating temperature and low density. The main method is to introduce silicide phases into niobium-based solid solutions to greatly improve the high-temperature performance of the alloys. However, with the introduction of Si elements, the toughness of niobium-based solid solutions will drop sharply, and the size of silicides in Nb-Si alloys obtained by traditional casting methods is difficult to control, which is not conducive to the room temperature fracture toughness of the alloy. Therefore, it is necessary to develop a new alloy composition and means to take into account the strength and toughness of Nb-Si-based alloys. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of low room temperature fracture toughness of existing niobium-silicon based ultra-high temperature alloys, and proposes an ultra-high temperature alloy with added ceramic phase and ultrasonic composite toughening and a preparation method thereof.

[0005] The invention discloses an ultra-high temperature alloy with added ceramic phase and ultrasonic composite toughening, which is composed of Nb, Si, Ti, Zr, Al and ceramic phase HfC, and is composed according to the following atomic percentages: Si is 10%-18%, Ti is 20%-25%, Zr is 5%-10%, Al is 1%-4%, HfC is 1%-4%, and the balance is Nb, and the chemical formula is NbSiTiZrAlHfC.

[0006] The present invention provides a method for preparing an ultrahigh temperature alloy by adding a ceramic phase and utilizing ultrasonic composite toughening, which is carried out according to the following steps:

[0007] 1. Weigh the raw materials according to the atomic percentage of Si: 10%-18%, Ti: 20%-25%, Zr: 5%-10%, Al: 1%-4%, HfC: 1%-4%, and the balance Nb, where the sum of the atomic percentages of each component is 100%;

[0008] 2. After pretreatment, the weighed raw materials are placed in a copper crucible of a vacuum melting furnace in the order of the melting points of the elements from low to high, vacuum is drawn and argon is filled in for protective melting, and then the furnace is cooled to obtain alloy button ingots;

[0009] 3. After the button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace and evacuate them to 5*10 -3 After Pa, high-purity argon gas is introduced to heat and remelt. After the button ingot is melted, ultrasonic waves are applied to the bottom of the crucible to perform ultrasonic treatment on the alloy melt. The process is completed.

[0010] The present invention has the following beneficial effects:

[0011] 1. The present invention prepares an ultra-high temperature alloy by adding a ceramic phase and using an ultrasonic process. The Zr element is introduced into the system to replace part of the Ti element in the alloy, which can effectively alleviate the segregation problem of low melting point elements. The addition of the ceramic phase can introduce Hf and C elements, which can reduce the c / a value of the Nb5Si3 phase, promote the decomposition of the metastable phase in the alloy, promote the formation of the γNb5Si3 phase, and thus improve the comprehensive performance of the alloy and improve the intrinsic brittleness of the Nb5Si3 phase and the Nbss phase. At the same time, the application of an external field promotes the energy disturbance of the alloy melt, thereby providing energy fluctuation conditions for the nucleation of the alloy, and thereby promoting the formation of the toughness phase of the alloy.

[0012] 2. The present invention prepares an ultra-high temperature alloy by adding a ceramic phase and utilizing an ultrasonic process. Under the action of an external field, the coarse silicide phase in the alloy can be effectively broken. At the same time, the broken silicide enters the melt, providing effective nucleation points for subsequent alloy solidification, further refining the alloy microstructure, and achieving an improvement in the strength and plasticity of the alloy.

[0013] 3. The present invention can realize pollution-free preparation of alloys by treating high melting point alloys in water-cooled copper crucibles. The strength and toughness of the alloys are improved synchronously by adding ceramic phases and performing ultrasonic treatment, which provides a new idea for the design and process optimization of subsequent Nb-Si-based alloys and prepares a Nb-Si-based ultra-high temperature alloy with great application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The SEM images of NbSiTiZrAlHfC alloys of Examples 1 and 2 and Comparative Examples 1 and 2;

[0015] Figure 2 This is a surface scan spectrum of the NbSiTiZrAlHfC alloy of Example 3;

[0016] Figure 3 Graph showing room temperature fracture toughness of NbSiTiZrAlHfC alloys of Examples 1, 2 and 3. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is not limited to the specific implementation modes listed below, but also includes any combination of the specific implementation modes.

[0018] Specific implementation method 1: In this implementation method, a super high temperature alloy with added ceramic phase and ultrasonic composite toughening is composed of Nb, Si, Ti, Zr, Al and ceramic phase HfC, and is composed of the following atomic percentages: Si is 10%-18%, Ti is 20%-25%, Zr is 5%-10%, Al is 1%-4%, HfC is 1%-4%, and the remainder is Nb. The chemical formula is NbSiTiZrAlHfC.

[0019] Specific embodiment 2: This embodiment is different from the specific embodiment 1 in that the super high temperature alloy is composed of the following atomic percentages: 10% Si, 25% Ti, 5% Zr, 2% Al, 2% HfC and 56% Nb, and the chemical formula is Nb-10Si-25Ti-5Zr-2Al-2HfC. The rest is the same as the specific embodiment 1.

[0020] Specific embodiment 3: This embodiment is different from specific embodiment 1 or 2 in that the ultra-high temperature alloy is composed of the following atomic percentages: 12% Si, 25% Ti, 5% Zr, 2% Al, 2% HfC and 54% Nb, and the chemical formula is Nb-12Si-25Ti-5Zr-2Al-2HfC. Others are the same as specific embodiment 1 or 2.

[0021] Specific embodiment 4: This embodiment is different from specific embodiments 1 to 3 in that the ultra-high temperature alloy is composed of the following atomic percentages: 14% Si, 25% Ti, 5% Zr, 2% Al, 2% HfC and 52% Nb, and the chemical formula is Nb-14Si-25Ti-5Zr-2Al-2HfC. Others are the same as specific embodiments 1 to 3.

[0022] Specific implementation method 5: This implementation method is a method for preparing an ultra-high temperature alloy by adding a ceramic phase and using ultrasonic composite toughening, which is carried out according to the following steps:

[0023] 1. Weigh the raw materials according to the atomic percentage of Si: 10%-18%, Ti: 20%-25%, Zr: 5%-10%, Al: 1%-4%, HfC: 1%-4%, and the balance Nb, where the sum of the atomic percentages of each component is 100%;

[0024] 2. After pretreatment, the weighed raw materials are placed in a copper crucible of a vacuum melting furnace in the order of the melting points of the elements from low to high, vacuum is drawn and argon is filled in for protective melting, and then the furnace is cooled to obtain alloy button ingots;

[0025] 3. After the button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace and evacuate them to 5*10-3 After Pa, high-purity argon gas is introduced to heat and remelt. After the button ingot is melted, ultrasonic waves are applied to the bottom of the crucible to perform ultrasonic treatment on the alloy melt. The process is completed.

[0026] Specific implementation example 6: This implementation example is different from specific implementation example 5 in that the pretreatment method in step 2 is: mechanically grinding and polishing the raw material, then washing and drying it with alcohol. The rest is the same as specific implementation example 5.

[0027] Specific implementation method 7: This implementation method is different from specific implementation methods 5 or 6 in that: in step 2, vacuum is drawn to 5*10 -3 Pa, and then high-purity argon gas is filled to -0.05MPa. Other aspects are the same as those of the fifth or sixth embodiment.

[0028] Specific embodiment 8: This embodiment differs from specific embodiments 5 to 7 in that the current in step 2 is 550-650A during smelting, and after the alloy is molten, smelting is continued at 650-750A for 3 minutes. The rest is the same as specific embodiments 5 to 7.

[0029] Specific embodiment 9: This embodiment is different from specific embodiments 5 to 8 in that the current in step 3 during remelting is 500 A. The rest is the same as specific embodiments 5 to 8.

[0030] Specific embodiment 10: This embodiment differs from specific embodiments 5 to 9 in that the power of the ultrasonic wave applied in step 3 is 20 kW and the time is 100 s. The rest is the same as specific embodiments 5 to 9.

[0031] The following examples are used to verify the beneficial effects of the present invention:

[0032] Example 1. This example is an ultra-high temperature alloy with added ceramic phase and ultrasonic composite toughening, which is composed of 10 atomic percent Si, 25 atomic percent Ti, 5 atomic percent Zr, 2 atomic percent Al, 2 atomic percent ceramic phase HfC and 56 atomic percent Nb, and has a chemical formula of Nb-10Si-25Ti-5Zr-2Al-2HfC.

[0033] The preparation method is as follows:

[0034] 1. Weigh the raw materials according to the chemical formula Nb-10Si-25Ti-5Zr-2Al-2HfC, where the purity of the raw materials is greater than 99.9% and the total mass is 120g. Grind and polish the weighed raw materials, clean them with alcohol, and then dry them and put them into a sample bag.

[0035] 2. Place the raw materials in a water-cooled copper crucible, starting from the bottom in the order of Al, Si, Ti, Zr, Nb and ceramic phase HfC, and then start smelting. Turn on the mechanical pump and main pumping valve, and evacuate to 5*10 -3 Pa, then fill with argon to -0.05MPa and start smelting. The current must be kept at 550-650A during smelting, and continue smelting at 650-750A for 3 minutes after the alloy is molten. The button ingot is turned 180° by the manipulator and smelted again, and the smelting is repeated 5 times.

[0036] 3. After the smelted button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 After the high-purity argon gas is introduced to -0.05MPa, heating and remelting are started. During smelting, the current is kept at 500A, and after the alloy is completely molten, it is kept for 3 minutes, then the ultrasonic generator is turned on, the ultrasonic power is adjusted to 20kW, and the timing is started. After 100s, the ultrasonic generator is turned off, and the current is directly reduced to 0A to obtain the ultra-high temperature alloy Nb-10Si-25Ti-5Zr-2Al-2HfC with ceramic phase added and ultrasonic composite toughening.

[0037] Example 2. This example is an ultra-high temperature alloy with a ceramic phase added and toughened by ultrasonic composite, which is composed of 12 atomic percent Si, 25 atomic percent Ti, 5 atomic percent Zr, 2 atomic percent Al, 2 atomic percent HfC and 54 atomic percent Nb, and has a chemical formula of Nb-12Si-25Ti-5Zr-2Al-2HfC.

[0038] The preparation method is as follows:

[0039] 1. Weigh the raw materials according to the chemical formula Nb-12Si-25Ti-5Zr-2Al-2HfC, where the purity of the raw materials is greater than 99.9% and the total mass is 120g. Grind and polish the weighed raw materials, clean them with alcohol, and then dry them and put them into a sample bag.

[0040] 2. Place the raw materials in a water-cooled copper crucible, starting from the bottom in the order of Al, Si, Ti, Zr, Nb and ceramic phase HfC, and then start smelting. Turn on the mechanical pump and main pumping valve, and evacuate to 5*10 -3 Pa, then fill with argon to -0.05MPa and start smelting. The current must be kept at 550-650A during smelting. After the alloy is molten, continue smelting at 650-750A for 3 minutes. Flip the button ingot 180° with a manipulator and smelt it again. Repeat the smelting 5 times.

[0041] 3. After the smelted button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 After the high-purity argon gas is introduced to -0.05MPa, heating and remelting are started. During smelting, the current is kept at 500A, and after the alloy is completely molten, it is kept for 3 minutes, then the ultrasonic generator is turned on, the ultrasonic power is adjusted to 20kW, and the timing is started. After 100s, the ultrasonic generator is turned off, and the current is directly reduced to 0A to obtain the ultra-high temperature alloy Nb-12Si-25Ti-5Zr-2Al-2HfC with ceramic phase added and ultrasonic composite toughening.

[0042] Example 3. This example is an ultra-high temperature alloy with a ceramic phase added and toughened by ultrasonic composite, which is composed of 14 atomic percent Si, 25 atomic percent Ti, 5 atomic percent Zr, 2 atomic percent Al, 2 atomic percent HfC and 52 atomic percent Nb, and has a chemical formula of Nb-14Si-25Ti-5Zr-2Al-2HfC.

[0043] The preparation method is as follows:

[0044] 1. Weigh the raw materials according to the chemical formula Nb-14Si-25Ti-5Zr-2Al-2HfC, where the purity of the raw materials is greater than 99.9% and the total mass is 120g. Grind and polish the weighed raw materials, clean them with alcohol, and then dry them and put them into the sample bag.

[0045] 2. Place the raw materials in a water-cooled copper crucible, starting from the bottom in the order of Al, Si, Ti, Zr, Nb and ceramic phase HfC, and then start smelting. Turn on the mechanical pump and main pumping valve, and evacuate to 5*10 -3 Pa, then fill with argon to -0.05MPa and start smelting. The current must be kept at 550-650A during smelting. After the alloy is molten, continue smelting at 650-750A for 3 minutes. Flip the button ingot 180° with a manipulator and smelt it again. Repeat the smelting 5 times.

[0046] 3. After the smelted button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 After the high-purity argon gas is introduced to -0.05MPa, heating and remelting are started. During smelting, the current is kept at 500A, and after the alloy is completely molten, it is kept for 3 minutes, then the ultrasonic generator is turned on, the ultrasonic power is adjusted to 20kW, and the timing is started. After 100s, the ultrasonic generator is turned off, and the current is directly reduced to 0A, and the ultra-high temperature alloy Nb-14Si-25Ti-5Zr-2Al-2HfC with ceramic phase added and ultrasonic composite toughening is obtained.

[0047] Comparative Example 1. In this embodiment, a super high temperature alloy is composed of 10 atomic percent Si, 25 atomic percent Ti, 5 atomic percent Zr, 2 atomic percent Al, 2 atomic percent HfC and 56 atomic percent Nb, and has a chemical formula of Nb-10Si-25Ti-5Zr-2Al-2HfC.

[0048] The preparation method is as follows:

[0049] 1. Weigh the raw materials according to the chemical formula Nb-10Si-25Ti-5Zr-2Al-2HfC, where the purity of the raw materials is greater than 99.9% and the total mass is 120g. Grind and polish the weighed raw materials, clean them with alcohol, and then dry them and put them into a sample bag.

[0050] 2. Place the raw materials in a water-cooled copper crucible. The order of placement from the bottom is Al, Si, Ti, Zr, Nb and ceramic phase HfC. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 Pa, then fill with argon to -0.05MPa and start smelting. The current must be kept at 550-650A during smelting. After the alloy is molten, continue smelting at 650-750A for 3 minutes. Flip the button ingot 180° with a manipulator and smelt it again. Repeat the smelting 5 times.

[0051] 3. After the smelted button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 After the alloy is completely molten, high-purity argon gas is introduced to -0.05MPa, and heating and remelting begins. During smelting, the current is kept at 500A. After the alloy is completely molten, the current is kept for 3 minutes and then directly reduced to 0A, and the ultrasonic actuator is turned off throughout the process.

[0052] Comparative Example 2: The ultrahigh temperature alloy of this embodiment is composed of 12 atomic percent Si, 25 atomic percent Ti, 5 atomic percent Zr, 2 atomic percent Al, 2 atomic percent HfC and 54 atomic percent Nb, and has a chemical formula of Nb-12Si-25Ti-5Zr-2Al-2HfC.

[0053] The preparation method is as follows:

[0054] 1. Weigh the raw materials according to the chemical formula Nb-12Si-25Ti-5Zr-2Al-2HfC, where the purity of the raw materials is greater than 99.9% and the total mass is 120g. Grind and polish the weighed raw materials, clean them with alcohol, and then dry them and put them into a sample bag.

[0055] 2. Place the raw materials in a water-cooled copper crucible. The order of placement from the bottom is Al, Si, Ti, Zr, Nb and ceramic phase HfC. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 Pa, then fill with argon to -0.05MPa and start smelting. The current must be kept at 550-650A during smelting. After the alloy is molten, continue smelting at 650-750A for 3 minutes. Flip the button ingot 180° with a manipulator and smelt it again. Repeat the smelting 5 times.

[0056] 3. After the smelted button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 After the alloy is completely molten, high-purity argon gas is introduced to -0.05MPa, and heating and remelting begins. During smelting, the current is kept at 500A. After the alloy is completely molten, the current is kept for 3 minutes and then directly reduced to 0A, and the ultrasonic actuator is turned off throughout the process.

[0057] Comparative Example 3: In this embodiment, a super-high temperature alloy is composed of 14 atomic percent Si, 25 atomic percent Ti, 5 atomic percent Zr, 2 atomic percent Al, 2 atomic percent HfC and 52 atomic percent Nb, and has a chemical formula of Nb-14Si-25Ti-5Zr-2Al-2HfC.

[0058] The preparation method is as follows:

[0059] 1. Weigh the raw materials according to the chemical formula Nb-12Si-25Ti-5Zr-2Al-2HfC, where the purity of the raw materials is greater than 99.9% and the total mass is 120g. Grind and polish the weighed raw materials, clean them with alcohol, and then dry them and put them into a sample bag.

[0060] 2. Place the raw materials in a water-cooled copper crucible. The order of placement from the bottom is Al, Si, Ti, Zr, Nb and ceramic phase HfC. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3 Pa, then fill with argon to -0.05MPa and start smelting. The current must be kept at 550-650A during smelting. After the alloy is molten, continue smelting at 650-750A for 3 minutes. Flip the button ingot 180° with a manipulator and smelt it again. Repeat the smelting 5 times.

[0061] 3. After the smelted button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace. Turn on the mechanical pump and main pumping valve to evacuate to 5*10 -3After the alloy is completely molten, high-purity argon gas is introduced to -0.05MPa, and heating and remelting begins. During smelting, the current is kept at 500A. After the alloy is completely molten, the current is kept for 3 minutes and then directly reduced to 0A, and the ultrasonic actuator is turned off throughout the process.

[0062] Figure 1 The SEM images of Examples 1 and 2 and Comparative Examples 1 and 2 show that ultrasound can significantly refine the microstructure of the alloy. After ultrasonic treatment, the size of the silicide is significantly reduced. This is because the ultrasonic treatment adds energy fluctuation conditions to the alloy melt, and the broken primary phase provides more nucleation points for alloy nucleation, thereby refining the alloy structure. At the same time, the added ceramic phase HfC can change the phase composition in the alloy, and cooperate with ultrasound to refine the grains while the new phase nucleates.

[0063] Figure 2 The energy spectrum scan of Example 3 shows that Nb and Ti elements are mainly present in the niobium-based solid solution Nbss phase of the alloy, Zr and Si elements are mainly present in the silicide, and other elements are distributed relatively evenly. There is no obvious segregation in the alloy. This is because under the action of ultrasound, the alloy elements can be better distributed. At the same time, ultrasonic treatment can also increase the solid solubility of the alloy elements in each phase.

[0064] Figure 3 The room temperature fracture toughness values ​​of Examples 1, 2 and 3 are 13.54 MPa, 14.89 MPa and 16.47 MPa, respectively. It can be seen that the room temperature fracture toughness of the alloy does not decrease but increases with the increase of Si element content. This is because after ultrasonic treatment, the Nbss phase and the silicide γNb5Si3 in the alloy are optimized, and the interface bonding of the alloy is good, which is beneficial to the fracture toughness of the alloy; at the same time, the fourth group elements are commonly used toughening elements in Nb-Si alloys. In this alloy system, the room temperature fracture toughness of the Nb-Si based alloy is significantly improved. The addition of the ceramic phase can introduce Hf and C elements, which can reduce the c / a value of the Nb5Si3 phase, promote the decomposition of the metastable phase in the alloy, and promote the formation of the γNb5Si3 phase, thereby improving the comprehensive performance of the alloy and improving the intrinsic brittleness of the Nb5Si3 phase and the Nbss phase.

Claims

1. An ultra-high temperature alloy with ceramic phase added and ultrasonic composite toughening, characterized in that: The ultra-high temperature alloy is composed of Nb, Si, Ti, Zr, Al and ceramic phase HfC, and is composed according to the following atomic percentages: Si is 10%-18%, Ti is 20%-25%, Zr is 5%-10%, Al is 1%-4%, HfC is 1%-4%, and the balance is Nb. The chemical formula is NbSiTiZrAlHfC.

2. The ultrahigh temperature alloy with ceramic phase added and ultrasonic composite toughening according to claim 1, characterized in that: The ultra-high temperature alloy is composed of the following atomic percentages: 10% Si, 25% Ti, 5% Zr, 2% Al, 2% HfC and 56% Nb, and has a chemical formula of Nb-10Si-25Ti-5Zr-2Al-2HfC.

3. The ultrahigh temperature alloy with ceramic phase added and ultrasonic composite toughening according to claim 1, characterized in that: The ultra-high temperature alloy is composed of the following atomic percentages: 12% Si, 25% Ti, 5% Zr, 2% Al, 2% HfC and 54% Nb, and has a chemical formula of Nb-12Si-25Ti-5Zr-2Al-2HfC.

4. The ultrahigh temperature alloy with ceramic phase added and ultrasonic composite toughening according to claim 1, characterized in that: The ultra-high temperature alloy is composed of 14% Si, 25% Ti, 5% Zr, 2% Al, 2% HfC and 52% Nb in the following atomic percentages, and has a chemical formula of Nb-14Si-25Ti-5Zr-2Al-2HfC.

5. The method for preparing a superalloy with ceramic phase added and ultrasonic composite toughening as claimed in claim 1, characterized in that: The method is carried out according to the following steps:

1. weighing raw materials according to the atomic percentage of Si: 10%-18%, Ti: 20%-25%, Zr: 5%-10%, Al: 1%-4%, HfC: 1%-4%, and the balance Nb, wherein the sum of the atomic percentages of each component is 100%; 2. After pretreatment, the weighed raw materials are placed in a copper crucible of a vacuum melting furnace in the order of the melting points of the elements from low to high, vacuum is drawn and argon is filled in for protective melting, and then the furnace is cooled to obtain alloy button ingots; 3. After the button ingots are cooled, take them out, clean them with alcohol, blow them dry, and then place them in a vacuum ultrasonic melting furnace and evacuate them to 5*10 -3 After Pa, high-purity argon gas is introduced to heat and remelt. After the button ingot is melted, ultrasonic waves are applied to the bottom of the crucible to perform ultrasonic treatment on the alloy melt. The process is completed.

6. The method for preparing a superalloy by adding a ceramic phase and using ultrasonic composite toughening according to claim 5, characterized in that: The pretreatment method in step 2 is: mechanically grinding and polishing the raw material, and then cleaning and drying it with alcohol.

7. The method for preparing a superalloy by adding a ceramic phase and utilizing ultrasonic composite toughening according to claim 5, characterized in that: In step 2, vacuum to 5*10 -3 Pa, and then filled with high-purity argon gas to -0.05MPa.

8. The method for preparing a superalloy with ceramic phase added and ultrasonic composite toughening according to claim 5, characterized in that: During step 2, the current is 550-650A. After the alloy is molten, continue to smelt at 650-750A for 3 minutes.

9. The method for preparing a superalloy by adding a ceramic phase and utilizing ultrasonic composite toughening according to claim 5, characterized in that: The current during remelting in step three is 500A.

10. The method for preparing a superalloy with ceramic phase added and ultrasonic composite toughening according to claim 5, characterized in that: The power of the ultrasonic wave applied in step 3 is 20 kW and the duration is 100 s.

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