CN113564500B - Preparation method of high-strength ultrafine-grained TC4 titanium alloy foil - Google Patents
Preparation method of high-strength ultrafine-grained TC4 titanium alloy foil Download PDFInfo
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- CN113564500B CN113564500B CN202110715398.7A CN202110715398A CN113564500B CN 113564500 B CN113564500 B CN 113564500B CN 202110715398 A CN202110715398 A CN 202110715398A CN 113564500 B CN113564500 B CN 113564500B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
Abstract
The invention provides a preparation method of a high-strength ultrafine-grained TC4 titanium alloy foil, which comprises the following steps: (1) heating a TC4 titanium alloy ingot at 1000-1100 ℃, cogging and forging to obtain a blank; (2) heating at 850-920 ℃, and rolling the blank; (3) performing heat treatment at 30-50 ℃ above the beta transformation point, and then performing water quenching and cooling to obtain a plate blank; (4) heating at 850-920 ℃ and then rolling; (5) assembling and welding the obtained blank to obtain a cladding and rolling package; (6) heating at 800-850 deg.c and rolling for the fourth time; (7) disassembling the pack, and performing second assembly welding on the blank to obtain a coated pack; (8) heating at 800-850 ℃, and rolling in a direction perpendicular to the last rolling direction; (9) annealing, creep deformation correction, alkali acid washing and sanding are carried out, and then a plate with the thickness of 0.4mm is obtained; (10) shearing the plate, and then carrying out cold rolling for 3-7 times to obtain a rolled foil with the thickness of 0.08-0.2 mm; (11) and carrying out vacuum annealing heat treatment to obtain a finished foil with the thickness of 0.08-0.2 mm.
Description
Technical Field
The invention belongs to the technical field of titanium alloy material processing, and particularly relates to a preparation method of a high-strength ultrafine-grained TC4 titanium alloy foil.
Background
The TC4 titanium alloy has the use temperature of 350 ℃ at most, and is a structural titanium alloy material widely applied in the field of aerospace. In order to achieve the purposes of high temperature resistance and weight reduction, the foil of the TC4 titanium alloy becomes a main titanium alloy semi-finished product of a honeycomb structure in aerospace planes and hypersonic flight vehicles.
The thickness of the TC4 titanium alloy foil used for making the honeycomb core cells is usually below 0.15mm, and the thickness deviation of the foil is required to be not more than +/-0.015 mm. The foil generally needs to be processed on a twenty-high roll mill, the processing process is complex, the processing period is long, and the cost is high.
In the invention patent with the publication number of CN103464461B, a preparation method of a TB8 titanium alloy foil is provided, wherein a plate with the thickness of 0.3-0.5 mm is selected as a raw material, and the foil with the thickness of 0.08-0.2 mm is prepared, but the microstructure and the mechanical property of the foil are not concerned.
In the invention patent with the publication number of CN102941228B, a method for preparing a titanium alloy foil is provided, the method selects a titanium alloy plate with the thickness of 0.5-2.0 mm as a raw material, adopts a four-roll mill to prepare the foil with the thickness of 0.05-0.3 mm by hot rolling, adopts acid cleaning and surface leveling after heating and overlapping to obtain a foil finished product, and does not relate to thickness deviation control, structure, mechanical property and the like of the foil.
In the invention patent with the application publication number of CN108929962A, a preparation method of a novel beta type titanium alloy low-modulus high-precision superfine crystal foil is provided, and in the preparation method of the fine crystal foil provided by the patent, an Al-5Ti-1B crystal grain refiner is added in the ingot casting refining process for physical fine crystal, and fine crystal foil is obtained by carrying out fine rolling through pack rolling. The method is only applicable to the preparation of the novel beta titanium alloy foil mentioned in the patent. For titanium alloy foils with specified brands, such as TC4, TA15 and the like, due to strict requirements on alloy components in national standards, a grain refiner cannot be added for grain refinement to obtain ultrafine grains.
The high-strength ultrafine-grained TC4 titanium alloy foil is mainly applied to honeycomb structural members in aerospace high-temperature bearing parts, and not only is the foil required to have good forming performance, but also higher room-temperature tensile strength (not lower than 900MPa) is required, and meanwhile, higher requirements are also provided for the thickness deviation of the foil. In the existing Chinese patents of TC4 foil preparation methods, only the preparation methods from plates to foils are concerned, and the influence of the final heat treatment annealing process of the foils on the room-temperature tensile mechanical properties of the foils is not involved. As the preparation process of preparing the initial blank by the foil is also a main factor influencing the tissue and mechanical property of the foil, for the TC4 titanium alloy foil for aerospace, the plate rolling process, the foil rolling process and the annealing heat treatment process of the foil finished product need to be comprehensively considered, and the TC4 titanium alloy foil with qualified microstructure (the grain size is 1-3 mu m), mechanical property (the room-temperature tensile strength can reach 900-980 MPa, and the 400-DEG C tensile strength can reach 550-650 MPa) and size precision (the thickness deviation is not more than +/-0.015 mm) is prepared.
Disclosure of Invention
The invention provides a preparation method of a high-strength TC4 titanium alloy ultra-fine grain foil against the blank of a preparation technology of the high-strength TC4 titanium alloy ultra-fine grain foil, and aims to provide the high-strength TC4 titanium alloy ultra-fine grain foil, wherein the average grain size of the foil is 1-3 mu m, the room-temperature tensile strength can reach 900-980 MPa, the elongation is more than or equal to 10%, the 400- ℃ tensile strength is 550-650 MPa, and the thickness deviation of the foil is not more than +/-0.015 mm.
The technical scheme of the invention is as follows:
a preparation method of a high-strength TC4 titanium alloy ultra-fine grain foil is characterized by comprising the following steps:
step one, keeping the temperature of a titanium alloy ingot in a heating furnace at 1000-1100 ℃ for 200-240 min, and forging on a forging machine, wherein the finish forging temperature is not lower than 980 ℃ to obtain a blank for rolling;
secondly, preserving the heat of the obtained blank in a heating furnace at the temperature of 850-920 ℃ for 100-150 min, and cogging and rolling the blank on a rolling mill to obtain a plate blank with the thickness of 15 +/-2 mm;
shearing the obtained plate blank, keeping the temperature of the plate blank in a heating furnace with the temperature of 30-50 ℃ above the beta transformation point of the TC4 titanium alloy for 60-90 min, and performing water quenching to the temperature below 100 ℃;
grinding the surface of the obtained plate blank, keeping the temperature of the ground plate blank in a heating furnace at the temperature of 850-920 ℃ for 60-90 min, and rolling the ground plate blank to obtain a blank with the thickness of 3 +/-0.5 mm;
cutting the obtained blank into 2-4 pieces, and coating the surface of the blank with a steel plate after assembly welding to prepare a coated rolling package;
sixthly, keeping the temperature of the obtained coated rolling bag in a heating furnace at 800-850 ℃ for 60-90 min, and rolling to obtain a blank with the thickness of 1 +/-0.2 mm;
cutting the obtained blank into 2-4 pieces, and coating the surface of the blank with a steel plate after assembly welding to prepare a coated rolling bag;
step eight, keeping the obtained coated rolling packet in a heating furnace at the temperature of 800-850 ℃ for 80-100 min, and rolling the coated rolling packet to obtain a blank with the thickness of 0.45 +/-0.03 mm, wherein the temperature is perpendicular to the rolling direction in the step six;
step nine, annealing the obtained blank, creep deformation correcting, alkali acid washing and sanding to obtain a plate with the thickness of 0.4 +/-0.05 mm;
cutting the obtained plate, then sending the plate into a six-roller reversible rolling mill for cold rolling for 3-7 times, and carrying out vacuum annealing heat treatment between rolling passes in the middle process to finally obtain a rolled foil with the thickness of 0.08-0.2 mm;
step eleven, putting the rolled foil into a vacuum furnace for vacuum annealing heat treatment to obtain a finished foil with the thickness of 0.08-0.2 mm.
As a preferred technical scheme:
the size of the blank obtained in the step one is 90 +/-5 mm multiplied by 300mm multiplied by 600mm, and the total deformation of the blank in the thickness direction is not less than 70%.
And step two, cogging and rolling, wherein the number of rolling passes is one, and the total deformation is not less than 80%.
And step four, rolling, wherein the number of rolling processes is one, and the total deformation is not less than 70%.
And fifthly, the thickness ratio of the steel plate in the clad rolling package to each titanium alloy blank is 1-20: 1.
And step six, rolling, wherein the number of rolling passes is one, and the total deformation is not less than 50%.
And seventhly, the thickness ratio of the steel plate in the clad rolling package to each titanium alloy blank is 1-20: 1.
And step eight, rolling, wherein the number of rolling passes is one, and the total deformation is not less than 35%.
Carrying out heat treatment in the intermediate process in the ninth step, wherein the temperature is 750-800 ℃, the annealing time is 60-150 min, and cooling along with the furnace;
step ten, cold rolling in the middle process, wherein the total deformation of each rolling process is 15-30%, and the vacuum annealing heat treatment is carried out, wherein the vacuum degree is 10 -3 ～10 -2 Pa, the heat treatment temperature in the intermediate process is 700-850 ℃, and the heat preservation time is 30-90 min;
in the eleventh step, the finished foil is subjected to vacuum annealing heat treatment, wherein the vacuum degree is 10 -3 ～10 -2 Pa, the heat treatment temperature is 750-900 ℃, the heat preservation time is 60-90 min, and the furnace is cooledBut instead.
Compared with the prior art, the invention has the following advantages:
1. the invention covers the full-flow preparation process and method of plate blank preparation, plate rolling, foil preparation and foil heat treatment in TC4 titanium alloy foil preparation, and can effectively control the microstructure and mechanical property of the foil.
2. According to the invention, a beta phase region quenching process is adopted in the plate blank preparation process to form needle-like disordered martensite alpha' phase laths and a small amount of beta phase, so that the phase change texture of the final product foil can be effectively weakened, and the grain size of the foil is refined.
3. According to the invention, the 0.4mm plate undergoes two times of coating and one time of reversing rolling, so that the rolling texture of the final foil can be effectively weakened.
4. The high-strength ultrafine-grained TC4 titanium alloy foil prepared by the method has the average grain size of 1-3 mu m, the room-temperature tensile strength of 900-980 MPa, the elongation of more than or equal to 10 percent, the 400-DEG C tensile strength of 550-650 MPa, and the thickness deviation of the foil is not more than +/-0.015 mm.
Detailed Description
The present invention will be described in further detail with reference to examples, in which the degree of vacuum of the vacuum annealing heat treatment of the present invention is 10, unless otherwise specified -3 ～10 -2 Pa。
Example 1
Preparation of TC4 titanium alloy foil with thickness of 0.08mm
Smelting a TC4 titanium alloy ingot with a target component of Ti-6Al-4V-0.1O, preserving the temperature of the titanium alloy ingot in a heating furnace at 1100 ℃ for 200min, forging on a forging machine, wherein the finish forging temperature is not lower than 980 ℃, and obtaining a blank for rolling; the size of the obtained blank is 90 +/-5 mm multiplied by 300mm multiplied by 600mm, and the total deformation in the thickness direction of the blank is not less than 70 percent;
step two, keeping the obtained blank at the temperature of 920 ℃ in a heating furnace for 100min, and performing cogging rolling on a rolling mill with one rolling pass to obtain a plate blank with the thickness of 15 mm;
shearing the obtained plate blank, keeping the temperature of the plate blank in a heating furnace at the temperature of 30 ℃ above the beta transformation point for 60min, and performing water quenching to the temperature below 100 ℃;
grinding the surface of the obtained blank, keeping the temperature of the ground blank in a heating furnace at the temperature of 920 ℃ for 90min, and rolling the ground blank to obtain a blank with the thickness of 3mm, wherein the number of rolling processes is one, and the total deformation is 80%;
cutting the obtained blanks into 4 pieces, combining and welding the 4 pieces, and coating the surfaces of the 4 pieces by using a steel plate to prepare a coated rolling package, wherein the thickness ratio of the steel plate to each titanium alloy blank is 10: 1;
step six, keeping the temperature of the obtained coated rolling bag in a heating furnace at 850 ℃ for 90min, and rolling to obtain a blank with the thickness of 1.0mm, wherein the number of rolling passes is one, and the total deformation is 67%;
cutting the obtained blank into 4 pieces, combining and welding the 4 pieces, and coating the surface of the blank with a steel plate to prepare a coated rolling package, wherein the thickness ratio of the steel plate to each titanium alloy plate is 10: 1;
step eight, keeping the obtained coated rolling package in a heating furnace at the temperature of 850 ℃ for 100min, and rolling the coated rolling package in a direction perpendicular to the rolling direction in the step six to obtain a blank with the thickness of 0.45mm, wherein the number of rolling passes is one, and the total deformation is 55%;
step nine, subjecting the obtained blank to annealing heat treatment of furnace cooling at 750 ℃ for 120min, and obtaining a plate with the thickness of 0.4mm after creep deformation correction, alkali acid washing and sanding;
cutting the obtained plate, then sending the plate into a six-roller reversible rolling mill for cold rolling for 6 times, wherein the total deformation of each rolling process is 20%, and after each rolling in the intermediate process, performing vacuum annealing heat treatment at 800 ℃ for 30min to finally obtain a rolled foil with the thickness of 0.08 mm;
and step eleven, putting the rolled foil into a vacuum furnace for vacuum annealing heat treatment at 900 ℃ for 60min to obtain a finished foil with the thickness of 0.08 mm.
The TC4 titanium alloy foil with the thickness of 0.08mm prepared in the embodiment has the average grain size of 3 μm and the room-temperature tensile strength: 900MPa, elongation of 12 percent, tensile strength at 400 ℃ of 580MPa, and thickness deviation of the foil material of +/-0.01 mm.
Example 2
Preparation of TC4 titanium alloy foil with thickness of 0.1mm
Smelting a TC4 titanium alloy ingot with a target component of Ti-6Al-4V-0.06O, preserving the temperature of the titanium alloy ingot in a heating furnace at 1050 ℃ for 240min, forging a slab on a forging machine, wherein the finish forging temperature is not lower than 980 ℃, and obtaining a blank for rolling; the size of the obtained blank is 90mm multiplied by 300mm multiplied by 600mm, and the total deformation in the thickness direction of the blank is not less than 70 percent;
step two, keeping the obtained blank at the temperature of 850 ℃ in a heating furnace for 150min, and performing cogging rolling on a rolling mill with one rolling pass to obtain a plate blank with the thickness of 17 mm;
shearing the obtained plate blank, keeping the temperature of the plate blank in a heating furnace at 50 ℃ above the beta transformation point for 90min, and performing water quenching to the temperature below 100 ℃;
grinding the surface of the obtained plate blank, keeping the temperature of the plate blank in a heating furnace at the temperature of 850 ℃ for 60min, and rolling to obtain a blank with the thickness of 3.5mm, wherein the number of rolling passes is one, and the total deformation is 79%;
cutting the obtained blanks into 2 pieces, combining the 2 pieces into a group, welding the group, and coating the surface of the group with a steel plate to prepare a coated rolling packet, wherein the thickness ratio of the steel plate to each titanium alloy blank is 5: 1;
step six, keeping the temperature of the obtained coated rolling package in a heating furnace at 850 ℃ for 60min, and rolling to obtain a blank with the thickness of 1.2mm, wherein the number of rolling passes is one, and the total deformation is 66%;
seventhly, cutting the obtained 1.2mm blanks into 2 pieces, combining and welding the 2 pieces, and coating the surfaces of the 2 pieces by using a steel plate to prepare a coated rolling package, wherein the thickness ratio of the steel plate to each piece of titanium alloy blank is 5: 1;
step eight, keeping the obtained coated rolling package in a heating furnace at the temperature of 850 ℃ for 80min, and rolling the coated rolling package in a direction perpendicular to the rolling direction in the step six to obtain a blank with the thickness of 0.45mm, wherein the number of rolling passes is one, and the total deformation is 63%;
step nine, subjecting the obtained blank to furnace cooling annealing treatment, creep deformation correction, alkali acid washing and sanding at 800 ℃ for 150min to obtain a plate with the thickness of 0.4 mm;
cutting the obtained 0.4mm plate, then sending the plate into a six-roller reversible rolling mill for cold rolling for 4 times, wherein the total deformation of each rolling process is 30 percent, and after each rolling in the intermediate process, performing vacuum annealing heat treatment at 850 ℃ for 30min to finally obtain a rolled foil with the thickness of 0.1 mm;
step eleven, putting the rolled foil into a vacuum furnace for vacuum annealing heat treatment at 750 ℃ for 60min to obtain a finished foil with the thickness of 0.1 mm.
The TC4 titanium alloy foil with the thickness of 0.1mm prepared in the embodiment has the average grain size of 2 μm and the tensile strength at room temperature: 980MPa, the elongation rate is 11.5 percent, the tensile strength at 400 ℃ is 650MPa, and the thickness deviation of the foil is +/-0.015 mm.
Example 3
Preparation of TC4 titanium alloy foil with thickness of 0.2mm
Smelting a TC4 titanium alloy ingot with a target component of Ti-6Al-4V-0.09O, preserving the temperature of the titanium alloy ingot in a heating furnace at 1050 ℃ for 220min, forging a slab on a forging machine, wherein the finish forging temperature is not lower than 980 ℃, and obtaining a blank for rolling; the size of the obtained blank is 90mm multiplied by 300mm multiplied by 600mm, and the total deformation in the thickness direction of the blank is not less than 70 percent;
step two, keeping the obtained blank at the temperature of 900 ℃ in a heating furnace for 120min, and performing cogging rolling on a rolling mill with one rolling pass to obtain a plate blank with the thickness of 14 mm;
shearing the obtained plate blank, keeping the temperature of the plate blank in a heating furnace at 40 ℃ above the beta transformation point for 80min, and performing water quenching to below 100 ℃;
grinding the surface of the obtained plate blank, keeping the temperature of the plate blank in a heating furnace at 900 ℃ for 80min, and rolling to obtain a blank with the thickness of 2.5mm, wherein the number of rolling passes is one, and the deformation is 82%;
cutting the obtained blanks into 3 pieces, combining the 3 pieces, welding the 3 pieces, and coating the surfaces of the 3 pieces by using a steel plate to prepare a coated rolling packet, wherein the thickness ratio of the steel plate to each titanium alloy blank is 10: 1;
step six, keeping the temperature of the obtained coated rolling bag in a heating furnace at 800 ℃ for 80min, and rolling to obtain a blank with the thickness of 0.8mm, wherein the number of rolling passes is one, and the deformation is 68%;
cutting the obtained blanks into 3 pieces, combining the 3 pieces, welding, and coating the surfaces of the 3 pieces by using a steel plate to prepare a coated rolling package, wherein the thickness ratio of the steel plate to each titanium alloy blank is 10: 1;
step eight, keeping the temperature of the obtained coated rolling package in a heating furnace at 800 ℃ for 90min, and rolling the coated rolling package in a direction perpendicular to the rolling direction in the step six to obtain a blank with the thickness of 0.42mm, wherein the number of rolling passes is one, and the total deformation is 48%;
step nine, annealing the obtained blank at 800 ℃ for 120min in a furnace cooling mode, creep deformation correction, alkali acid washing and sanding to obtain a plate with the thickness of 0.4 mm;
cutting the obtained plate, and then sending the plate into a six-roller reversible rolling mill for cold rolling for 4 times, wherein the total deformation of each rolling process is 15%, and in the middle process, vacuum annealing heat treatment at 700 ℃ for 90min must be carried out between each rolling process, so that the rolled foil with the thickness of 0.2mm is finally obtained;
and step eleven, putting the rolled foil into a vacuum furnace, and performing vacuum annealing heat treatment at 800 ℃ for 60min to obtain a finished foil with the thickness of 0.2 mm.
The TC4 titanium alloy foil with the thickness of 0.2mm prepared in the embodiment has the average grain size of 2.5 μm and the tensile strength at room temperature: 950MPa, elongation 13.0 percent, tensile strength at 400 ℃ of 620MPa, and thickness deviation of the foil of +/-0.015 mm.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A preparation method of a high-strength ultrafine-grained TC4 titanium alloy foil is characterized by comprising the following steps:
step one, keeping the temperature of a titanium alloy ingot in a heating furnace at 1000-1100 ℃ for 200-240 min, and forging on a forging machine, wherein the finish forging temperature is not lower than 980 ℃ to obtain a blank for rolling;
secondly, preserving the heat of the obtained blank in a heating furnace at the temperature of 850-920 ℃ for 100-150 min, and cogging and rolling the blank on a rolling mill to obtain a plate blank with the thickness of 15 +/-2 mm;
shearing the obtained plate blank, keeping the temperature of the plate blank in a heating furnace with the temperature of 30-50 ℃ above the beta transformation point of the TC4 titanium alloy for 60-90 min, and performing water quenching to the temperature below 100 ℃;
grinding the surface of the obtained plate blank, keeping the temperature of the ground plate blank in a heating furnace at the temperature of 850-920 ℃ for 60-90 min, and rolling the ground plate blank to obtain a blank with the thickness of 3 +/-0.5 mm;
cutting the obtained blank into 2-4 pieces, and coating the surface of the blank with a steel plate after assembly welding to prepare a coated rolling package;
sixthly, keeping the temperature of the obtained coated rolling bag in a heating furnace at 800-850 ℃ for 60-90 min, and rolling to obtain a blank with the thickness of 1 +/-0.2 mm;
cutting the obtained blank into 2-4 pieces, and coating the surface of the blank with a steel plate after assembly welding to prepare a coated rolling bag;
step eight, keeping the obtained coated rolling packet in a heating furnace at the temperature of 800-850 ℃ for 80-100 min, and rolling the coated rolling packet to obtain a plate blank with the thickness of 0.45 +/-0.03 mm, wherein the temperature of the heating furnace is perpendicular to the rolling direction in the step six;
step nine, annealing the obtained plate blank, creep deformation correcting, alkali acid washing and sanding to obtain a plate with the thickness of 0.4 +/-0.05 mm;
cutting the obtained plate, then sending the plate into a six-roller reversible rolling mill for cold rolling for 3-7 times, and carrying out vacuum annealing heat treatment between rolling passes in the middle process to finally obtain a rolled foil with the thickness of 0.08-0.2 mm;
step eleven, putting the rolled foil into a vacuum furnace for vacuum annealing heat treatment to obtain a finished foil with the thickness of 0.08-0.2 mm, wherein the thickness deviation of the foil is not more than +/-0.015 mm.
2. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: the size of the blank obtained in the step one is 90 +/-5 mm multiplied by 300mm multiplied by 600mm, and the total deformation of the blank in the thickness direction is not less than 70%.
3. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: and step two, cogging and rolling, wherein the number of rolling passes is one, and the total deformation is not less than 80%.
4. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: and step four, rolling, wherein the number of rolling processes is one, and the total deformation is not less than 70%.
5. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: in the fifth step or the seventh step, the thickness ratio of the steel plate to each titanium alloy blank in the clad-rolled package is 1-20: 1.
6. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: and step six, rolling, wherein the number of rolling passes is one, and the total deformation is not less than 50%.
7. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: and step eight, rolling, wherein the number of rolling passes is one, and the total deformation is not less than 35%.
8. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: annealing treatment in the step nine, wherein the temperature is 750-800 ℃, the annealing time is 60-150 min, and furnace cooling is carried out; the resulting 0.4mm sheet stock was prepared.
9. The method for preparing the high-strength ultra-fine grain TC4 titanium alloy foil as recited in claim 1, wherein: step ten, cold rolling in the middle process, wherein the total deformation of each rolling process is 15-30 percent, and the vacuum annealing heat treatment is performedDegree of vacuum 10 -3 ～10 -2 Pa; the heat treatment temperature in the intermediate process is 700-850 ℃, and the heat preservation time is 30-90 min;
in the eleventh step, the finished foil is subjected to vacuum annealing heat treatment, wherein the vacuum degree is 10 -3 ～10 -2 Pa, the heat treatment temperature is 750-900 ℃, the heat preservation time is 60-90 min, and the furnace cooling is carried out.
10. The high-strength ultra-fine grain TC4 titanium alloy foil prepared by the method of claim 1, wherein: the high-strength ultrafine-grained TC4 titanium alloy foil has the average grain size of 1-3 mu m, the room-temperature tensile strength of 900-980 MPa, the elongation of more than or equal to 10 percent and the 400-DEG C tensile strength of 550-650 MPa.
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| CN114871274B (en) * | 2022-05-11 | 2023-03-28 | 西北工业大学 | Rolling process for accurately regulating and controlling near-alpha type high-temperature titanium alloy foil texture |
| CN115058672B (en) * | 2022-06-10 | 2023-07-04 | 北京航空航天大学 | Surface nanocrystallization large-size ultrafine-grain titanium alloy sheet and preparation method thereof |
| CN115739996B (en) * | 2022-11-14 | 2023-05-16 | 浙江申吉钛业股份有限公司 | Preparation method of high-strength high-plasticity TC4 titanium alloy sheet |
| CN115971249B (en) * | 2022-12-09 | 2023-07-18 | 浙江申吉钛业股份有限公司 | Preparation method of ultrathin TC4 titanium alloy plate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203361A (en) * | 2013-04-27 | 2013-07-17 | 西部钛业有限责任公司 | Rolling method of TC4 titanium alloy wide thick plate |
| JP2013189708A (en) * | 2012-02-13 | 2013-09-26 | Kobe Steel Ltd | Titanium alloy forged material and method for producing the same, and ultrasonic flaw-detection testing method |
| CN103934301A (en) * | 2014-04-20 | 2014-07-23 | 西部钛业有限责任公司 | Processing method of TC4 titanium alloy plate for superplastic forming |
| CN107574394A (en) * | 2017-09-18 | 2018-01-12 | 西北有色金属研究院 | A kind of preparation method of medical ultra-fine grain TC4 titanium alloy plates |
| CN109750185A (en) * | 2019-03-20 | 2019-05-14 | 中国科学院金属研究所 | A kind of preparation method of 650 DEG C of high-temperature titanium alloy thin plates of superplasticforming |
| CN112238152A (en) * | 2020-08-13 | 2021-01-19 | 陕西天成航空材料有限公司 | Preparation method of wide and super-thick TC4 titanium alloy plate |
| CN113020311A (en) * | 2019-12-25 | 2021-06-25 | 郑文涛 | Preparation method of TC4 titanium alloy sheet |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013189708A (en) * | 2012-02-13 | 2013-09-26 | Kobe Steel Ltd | Titanium alloy forged material and method for producing the same, and ultrasonic flaw-detection testing method |
| CN103203361A (en) * | 2013-04-27 | 2013-07-17 | 西部钛业有限责任公司 | Rolling method of TC4 titanium alloy wide thick plate |
| CN103934301A (en) * | 2014-04-20 | 2014-07-23 | 西部钛业有限责任公司 | Processing method of TC4 titanium alloy plate for superplastic forming |
| CN107574394A (en) * | 2017-09-18 | 2018-01-12 | 西北有色金属研究院 | A kind of preparation method of medical ultra-fine grain TC4 titanium alloy plates |
| CN109750185A (en) * | 2019-03-20 | 2019-05-14 | 中国科学院金属研究所 | A kind of preparation method of 650 DEG C of high-temperature titanium alloy thin plates of superplasticforming |
| CN113020311A (en) * | 2019-12-25 | 2021-06-25 | 郑文涛 | Preparation method of TC4 titanium alloy sheet |
| CN112238152A (en) * | 2020-08-13 | 2021-01-19 | 陕西天成航空材料有限公司 | Preparation method of wide and super-thick TC4 titanium alloy plate |
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