CN113846246A - Superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy and preparation method thereof - Google Patents
Superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C14/00—Alloys based on titanium
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- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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Abstract
The application provides a superplastic Ti-Al based intermetallic compound high-temperature titanium alloy and a preparation method thereof, wherein the titanium alloy comprises the following components in percentage by mass: al: 28.5 to 29.5 percent; nb: 9% -10%; mo: 2.3% -2.6%; b: 0.03 to 0.06 percent; y: 0.03 to 0.06 percent; the balance being Ti and unavoidable impurity elements. In the preparation method, the content of Nb of the titanium alloy is increased to form a short-range ordered structure on the basis of a beta solidification component, and the high-temperature oxidation resistance is improved to reach the use temperature of 850 ℃ at most. On the basis, the addition of B and Y elements and the control of the addition proportion improve the hot workability and strengthen the casting performance. The Ti-Al intermetallic compound prepared by the invention has good working performance at the ultrahigh temperature of 850 ℃ at most, and greatly improves the plasticity, so that the Ti-Al intermetallic compound has superplastic performance. Can fully meet the requirements of the fields of aerospace and the like on high-temperature titanium alloy materials.
Description
Technical Field
The application relates to the technical field of high-temperature titanium alloy, in particular to a superplastic Ti-Al based intermetallic compound high-temperature titanium alloy and a preparation method thereof.
Background
With the continuous development of the aviation industry, the new generation of aerospace engines puts higher demands on materials. By adopting the high-temperature titanium alloy to replace steel or the high-temperature alloy to manufacture engine parts such as turbine blade discs, blades and the like of aerospace engines, the weight of the engines can be obviously reduced, the working temperature of the engines is improved, the specific strength and the thrust-weight ratio are improved, and the existing Ti-Al based intermetallic compounds mainly comprise: Ti-Al intermetallic compounds such as beta-set component (TNM), high Nb component (TNB) and Ti 4822. TNM is a typical Ti-Al based intermetallic compound, the using temperature exceeds 700 ℃, but the conventional Ti-Al based intermetallic compound has poor room temperature plasticity and hot working performance while the using temperature is high, so that on the basis of the components of the TNM alloy, the component proportion is optimized, and a novel superplastic Ti-Al based intermetallic compound high-temperature titanium alloy is designed to further improve the working temperature and the processing and comprehensive mechanical properties of the titanium alloy, which is always a key problem to be solved by the Ti-Al based intermetallic compound.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
The invention provides a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy for solving the technical problems and the existing defects, and the intermetallic compound changes the content and the proportion of Al element and Mo element and improves the content of Nb, beta and alpha on the basis of TNM titanium alloy2The volume of the phase is increased, the crystal grains are obviously refined, a short-range ordered structure can be formed, and the improvementThe high-temperature oxidation resistance can further improve the service temperature to 850 ℃, and the proportion of the Y element to the B element is controlled, so that the high-temperature oxidation resistance has stronger refining effect on the space between the sheets and the size of the sheet aggregate, the plasticity and the hot working performance can be obviously improved, and the casting performance is enhanced. Therefore, the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy has better forming performance, has good working performance at the ultrahigh temperature of 850 ℃ at most, and greatly improves plasticity so as to have superplastic performance. Therefore, the titanium alloy has industrial application value and can fully meet the requirements of the fields of aerospace and the like on high-temperature titanium alloy materials.
To this end, an embodiment of an aspect of the present application proposes a superplastic Ti-Al-based intermetallic compound high temperature titanium alloy, the composition of which comprises Al: 28.5% -29.5%, Nb: 9% -10%, Mo: 2.3% -2.6%, B: 0.03% -0.06%, Y: 0.03 to 0.06 percent, and the balance of Ti and inevitable impurity elements in percentage by mass.
In some embodiments, the ratio of the mass percent of Mo to Nb is between 24% and 26%.
In some embodiments, the ratio of the mass percentages of B and Y is 1: 1 or 0.5: 1.
in some embodiments, the superplastic Ti-Al based intermetallic compound high temperature titanium alloy has a room temperature tensile strength of not less than 1000MPa and an elongation of not less than 15% in the as-forged condition, and a tensile strength of not less than 700MPa and an elongation of not less than 20% at 850 ℃.
The embodiment of the second aspect of the application provides a preparation method of the superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy, which comprises the following steps:
step A, preparing raw materials according to component design, uniformly mixing the materials, pressing and welding electrodes in vacuum;
step B, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al based intermetallic compound cast ingot, and peeling the surface of the cast ingot and cutting off a riser and the bottom to obtain a superplastic Ti-Al based intermetallic compound blank;
step C, carrying out hot isostatic pressing treatment on the superplastic Ti-Al based intermetallic compound blank;
and D, performing cogging forging and multi-fire high-temperature forging on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forging stock.
In some embodiments, in step a, 0A grade military small particle titanium, aluminum beans, aluminum niobium alloy, aluminum molybdenum alloy, aluminum boron alloy, and aluminum yttrium alloy are used as raw materials.
In some embodiments, in the step C, the hot isostatic pressing treatment temperature is 1150-1300 ℃, and the pressure is 130-230 MPa.
In some embodiments, the cogging forging temperature of step D is 1350 ℃ to 1450 ℃.
In some embodiments, the temperature of the multi-fire high-temperature forging in the step D is 1250 ℃ to 1350 ℃.
In some embodiments, step D, the cogging forging and the multiple-fire high-temperature forging are both one-heading-one-drawing.
Compared with the prior art, the invention has the following characteristics:
1. on the basis of TNM titanium alloy, the intermetallic compound changes the content and proportion of Al element and Mo element, beta and alpha2The volume of the phase is increased, the crystal grains are obviously refined, a short-range ordered structure can be formed, the use temperature is further improved, the proportion of the Y element to the B element is controlled, the refining effect on the space between the lamella and the size of the lamella groups is stronger, the plasticity and the hot working performance can be obviously improved, and the casting performance is enhanced. Therefore, the superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy has better forming performance, and has industrial application value.
2. The tensile strength at room temperature in a forging state is not lower than 1000MPa, the elongation is not lower than 15%, and the tensile strength is not lower than 700MPa and the elongation is not lower than 20% at 850 ℃.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Detailed Description
Embodiments of the present application are described in detail below. The described embodiments are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application.
The following describes a superplastic Ti-Al based intermetallic compound high temperature titanium alloy and a preparation method thereof according to an embodiment of the present application.
An embodiment of one aspect of the application provides a superplastic Ti-Al based intermetallic compound high-temperature titanium alloy, which comprises the following components in percentage by mass: al: 28.5% -29.5%, Nb: 9% -10%, Mo: 2.3% -2.6%, B: 0.03% -0.06%, Y: 0.03-0.06%, wherein the mass percentage of Mo and Nb is between 24-26%, and the mass percentage of B and Y is 1: 1 or 0.5: 1, the balance being Ti and unavoidable impurity elements.
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy prepared by the method has the room-temperature tensile strength of not less than 1000MPa and the elongation of not less than 15% in a forged state, and has the tensile strength of not less than 700MPa and the elongation of not less than 20% at 850 ℃.
The embodiment of the second aspect of the application provides a preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy, which is used for three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy.
The method specifically comprises the following steps:
step A, adopting 0A-grade military small-particle titanium, aluminum beans, aluminum niobium alloy, aluminum molybdenum alloy, aluminum boron alloy and aluminum yttrium alloy as raw materials, and designing uniform mixing, pressing and vacuum welding electrodes according to components;
step B, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al based intermetallic compound cast ingot, and peeling the surface of the cast ingot and cutting off a riser and the bottom to obtain a superplastic Ti-Al based intermetallic compound blank;
and C, carrying out hot isostatic pressing treatment on the superplastic Ti-Al based intermetallic compound blank, wherein the hot isostatic pressing treatment temperature is 1150-1300 ℃, and the pressure is 130-230 MPa.
And D, performing cogging forging and multi-fire high-temperature forging on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forging stock. The cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
The present invention is described in detail below with reference to examples 1 to 6.
Example 1
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy of the embodiment comprises the following components in percentage by mass: al: 28.5%, Nb: 9%, Mo: 2.3%, B: 0.03%, Y: 0.03%, and the balance of Ti and inevitable impurity elements.
The preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment is to carry out three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy. The specific process is as follows: selecting 0A-grade military small-particle titanium, aluminum beans, an aluminum-niobium alloy, an aluminum-molybdenum alloy, an aluminum-boron alloy and an aluminum-yttrium alloy as raw materials according to requirements, designing uniform mixing, pressing and vacuum welding electrodes according to components, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al-based intermetallic compound cast ingot, peeling the surface of the cast ingot, cutting off a riser and the bottom of the cast ingot to obtain a superplastic Ti-Al-based intermetallic compound blank, then carrying out hot isostatic pressing treatment on the blank at the temperature of 1150-1300 ℃ and the pressure of 130-230 MPa, and then carrying out cogging forging and multi-fire high-temperature forging on the blank on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forged rod with a square cross-sectional area and a cross-sectional area of 80 mm. Wherein the cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
According to the detection, the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment has the room-temperature tensile strength of 1090MPa and the elongation of 16% in a forged state, and has the tensile strength of 760MPa and the elongation of 26% at 850 ℃.
Example 2
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy of the embodiment comprises the following components in percentage by mass: al: 29.5%, Nb: 9%, Mo: 2.3%, B: 0.03%, Y: 0.03%, and the balance of Ti and inevitable impurity elements.
The preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment is to carry out three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy. The specific process is as follows: selecting 0A-grade military small-particle titanium, aluminum beans, an aluminum-niobium alloy, an aluminum-molybdenum alloy, an aluminum-boron alloy and an aluminum-yttrium alloy as raw materials according to requirements, designing uniform mixing, pressing and vacuum welding electrodes according to components, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al-based intermetallic compound cast ingot, peeling the surface of the cast ingot, cutting off a riser and the bottom of the cast ingot to obtain a superplastic Ti-Al-based intermetallic compound blank, then carrying out hot isostatic pressing treatment on the blank at the temperature of 1150-1300 ℃ and the pressure of 130-230 MPa, and then carrying out cogging forging and multi-fire high-temperature forging on the blank on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forged rod with a square cross-sectional area and a cross-sectional area of 80 mm. Wherein the cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
According to the detection, the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment has the room-temperature tensile strength of 1100MPa and the elongation of 18 percent in a forged state, and has the tensile strength of 790MPa and the elongation of 24 percent at 850 ℃.
Example 3
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy of the embodiment comprises the following components in percentage by mass: al: 28.5%, Nb: 10%, Mo: 2.3%, B: 0.03%, Y: 0.03%, and the balance of Ti and inevitable impurity elements.
The preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment is to carry out three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy. The specific process is as follows: selecting 0A-grade military small-particle titanium, aluminum beans, an aluminum-niobium alloy, an aluminum-molybdenum alloy, an aluminum-boron alloy and an aluminum-yttrium alloy as raw materials according to requirements, designing uniform mixing, pressing and vacuum welding electrodes according to components, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al-based intermetallic compound cast ingot, peeling the surface of the cast ingot, cutting off a riser and the bottom of the cast ingot to obtain a superplastic Ti-Al-based intermetallic compound blank, then carrying out hot isostatic pressing treatment on the blank at the temperature of 1150-1300 ℃ and the pressure of 130-230 MPa, and then carrying out cogging forging and multi-fire high-temperature forging on the blank on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forged rod with a square cross-sectional area and a cross-sectional area of 80 mm. Wherein the cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
Through detection, the room-temperature tensile strength of the superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy in the embodiment in the forged state is 1080MPa, the elongation is 19%, and the tensile strength is 770MPa and the elongation is 23% at 850 ℃.
Example 4
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy of the embodiment comprises the following components in percentage by mass: al: 29.5%, Nb: 10%, Mo: 2.6%, B: 0.03%, Y: 0.06 percent, and the balance of Ti and inevitable impurity elements.
The preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment is to carry out three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy. The specific process is as follows: selecting 0A-grade military small-particle titanium, aluminum beans, an aluminum-niobium alloy, an aluminum-molybdenum alloy, an aluminum-boron alloy and an aluminum-yttrium alloy as raw materials according to requirements, designing uniform mixing, pressing and vacuum welding electrodes according to components, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al-based intermetallic compound cast ingot, peeling the surface of the cast ingot, cutting off a riser and the bottom of the cast ingot to obtain a superplastic Ti-Al-based intermetallic compound blank, then carrying out hot isostatic pressing treatment on the blank at the temperature of 1150-1300 ℃ and the pressure of 130-230 MPa, and then carrying out cogging forging and multi-fire high-temperature forging on the blank on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forged rod with a square cross-sectional area and a cross-sectional area of 80 mm. Wherein the cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
According to the detection, the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment has the room-temperature tensile strength of 1090MPa and the elongation of 15% in a forged state, and has the tensile strength of 750MPa and the elongation of 26% at 850 ℃.
Example 5
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy of the embodiment comprises the following components in percentage by mass: al: 28.5%, Nb: 9%, Mo: 2.3%, B: 0.03%, Y: 0.06 percent, and the balance of Ti and inevitable impurity elements.
The preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment is to carry out three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy. The specific process is as follows: selecting 0A-grade military small-particle titanium, aluminum beans, an aluminum-niobium alloy, an aluminum-molybdenum alloy, an aluminum-boron alloy and an aluminum-yttrium alloy as raw materials according to requirements, designing uniform mixing, pressing and vacuum welding electrodes according to components, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al-based intermetallic compound cast ingot, peeling the surface of the cast ingot, cutting off a riser and the bottom of the cast ingot to obtain a superplastic Ti-Al-based intermetallic compound blank, then carrying out hot isostatic pressing treatment on the blank at the temperature of 1150-1300 ℃ and the pressure of 130-230 MPa, and then carrying out cogging forging and multi-fire high-temperature forging on the blank on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forged rod with a square cross-sectional area and a cross-sectional area of 80 mm. Wherein the cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
According to the test, the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment has the room-temperature tensile strength of 1120MPa and the elongation of 13% in a forged state, and has the tensile strength of 780MPa and the elongation of 23% at 850 ℃.
Example 6
The superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy of the embodiment comprises the following components in percentage by mass: al: 29.5%, Nb: 9%, Mo: 2.6%, B: 0.03%, Y: 0.03%, and the balance of Ti and inevitable impurity elements.
The preparation method of the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment is to carry out three times of vacuum consumable arc furnace smelting to prepare 150 Kg-grade superplastic Ti-Al based intermetallic compound high-temperature titanium alloy. The specific process is as follows: selecting 0A-grade military small-particle titanium, aluminum beans, an aluminum-niobium alloy, an aluminum-molybdenum alloy, an aluminum-boron alloy and an aluminum-yttrium alloy as raw materials according to requirements, designing uniform mixing, pressing and vacuum welding electrodes according to components, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al-based intermetallic compound cast ingot, peeling the surface of the cast ingot, cutting off a riser and the bottom of the cast ingot to obtain a superplastic Ti-Al-based intermetallic compound blank, then carrying out hot isostatic pressing treatment on the blank at the temperature of 1150-1300 ℃ and the pressure of 130-230 MPa, and then carrying out cogging forging and multi-fire high-temperature forging on the blank on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forged rod with a square cross-sectional area and a cross-sectional area of 80 mm. Wherein the cogging forging temperature is 1350-1450 ℃, the multi-fire high-temperature forging temperature is 1250-1350 ℃, and both the cogging forging and the multi-fire high-temperature forging are one upsetting and one drawing.
According to the test, the superplastic Ti-Al based intermetallic compound high-temperature titanium alloy of the embodiment has the room-temperature tensile strength of 1030MPa and the elongation of 19 percent in a forged state, and has the tensile strength of 730MPa and the elongation of 26 percent at 850 ℃.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A superplastic Ti-Al based intermetallic compound high temperature titanium alloy is characterized in that the components of the alloy comprise Al: 28.5% -29.5%, Nb: 9% -10%, Mo: 2.3% -2.6%, B: 0.03% -0.06%, Y: 0.03 to 0.06 percent, and the balance of Ti and inevitable impurity elements in percentage by mass.
2. The superplastic Ti-Al based intermetallic compound pyrometallitanium alloy according to claim 1, characterized in that the ratio of the mass percentage of Mo to Nb is comprised between 24% and 26%.
3. The superplastic Ti-Al based intermetallic compound high temperature titanium alloy according to claim 1, wherein the ratio of the mass percentage of B to the mass percentage of Y is 1: 1 or 0.5: 1.
4. the superplastic Ti-Al-based intermetallic compound pyrometallitanium alloy according to claim 1, wherein the superplastic Ti-Al-based intermetallic compound pyrometallitanium alloy has a room temperature tensile strength in the as-forged state of not less than 1000MPa and an elongation of not less than 15%, and has a tensile strength of not less than 700MPa and an elongation of not less than 20% at 850 ℃.
5. A method for preparing a superplastic Ti-Al based intermetallic compound high temperature titanium alloy according to any of claims 1 to 4, characterized in that it comprises the following steps:
step A, preparing raw materials according to component design, uniformly mixing the materials, pressing and welding electrodes in vacuum;
step B, smelting by adopting a three-time vacuum consumable electric arc furnace to obtain a superplastic Ti-Al based intermetallic compound cast ingot, and peeling the surface of the cast ingot and cutting off a riser and the bottom to obtain a superplastic Ti-Al based intermetallic compound blank;
step C, carrying out hot isostatic pressing treatment on the superplastic Ti-Al based intermetallic compound blank;
and D, performing cogging forging and multi-fire high-temperature forging on hydraulic forging machine equipment to obtain a superplastic Ti-Al-based intermetallic compound high-temperature titanium alloy forging stock.
6. The preparation method according to claim 5, wherein in the step A, 0A grade military small-particle titanium, aluminum beans, aluminum niobium alloy, aluminum molybdenum alloy, aluminum boron alloy and aluminum yttrium alloy are used as raw materials.
7. The method according to claim 5, wherein in the step C, the hot isostatic pressing treatment temperature is 1150-1300 ℃, and the pressure is 130-230 MPa.
8. The method according to claim 5, wherein the cogging forging temperature in the step D is 1350 ℃ to 1450 ℃.
9. The manufacturing method according to claim 5, wherein the temperature of the multi-fire high-temperature forging in the step D is 1250 ℃ to 1350 ℃.
10. The method according to claim 5, wherein the cogging forging and the multi-pass high-temperature forging are each one-heading one-drawing in step D.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050742A (en) * | 1989-10-06 | 1991-04-17 | 通用电气公司 | Improve the method for multi-component titanium alloy and prepared alloy |
| JPH05255775A (en) * | 1992-03-12 | 1993-10-05 | Nippon Steel Corp | Tial base intermetallic compound material having excellent hydrogen embrittlement resistance |
| US20040071585A1 (en) * | 2000-03-30 | 2004-04-15 | Toyo Ink Mfg. Co., Ltd. | Ti alloy for positive electrode for electrocoagulation printing, positive electrode and printing apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050742A (en) * | 1989-10-06 | 1991-04-17 | 通用电气公司 | Improve the method for multi-component titanium alloy and prepared alloy |
| JPH05255775A (en) * | 1992-03-12 | 1993-10-05 | Nippon Steel Corp | Tial base intermetallic compound material having excellent hydrogen embrittlement resistance |
| US20040071585A1 (en) * | 2000-03-30 | 2004-04-15 | Toyo Ink Mfg. Co., Ltd. | Ti alloy for positive electrode for electrocoagulation printing, positive electrode and printing apparatus |
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