CN111172483B - Preparation method of Ni-W alloy baseband with high W content - Google Patents
Preparation method of Ni-W alloy baseband with high W content Download PDFInfo
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- CN111172483B CN111172483B CN202010040326.2A CN202010040326A CN111172483B CN 111172483 B CN111172483 B CN 111172483B CN 202010040326 A CN202010040326 A CN 202010040326A CN 111172483 B CN111172483 B CN 111172483B
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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
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
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Abstract
The invention discloses a preparation method of a high-W-content Ni-W alloy baseband, which is characterized in that an alloy ingot is obtained by adopting a continuous casting technology, the components of the alloy ingot are 10-12 at.% W, the balance is Ni, the casting temperature is 1300-1320 ℃, the temperature of primary cooling water is 20-23 ℃, the flow of secondary cooling water is 30-33 ml/min, the blank drawing speed is 50-53 mm/min, and the thickness of the alloy ingot is 150 mm; carrying out hot rolling on the alloy ingot to a thickness of 12-15 mm, wherein the hot rolling process is carried out at 1180-1220 ℃, the temperature is kept for 50 minutes, the rolling pass is 6, and the hot rolling speed is 100-200 m/min; polishing the surface of a hot-rolled plate to remove oxide skin, and then carrying out cold rolling, wherein the cold rolling deformation is 95-99%, the pass deformation is 8-12%, and the cold rolling speed is 300-400 m/min; and (3) carrying out recrystallization annealing on the cold-rolled alloy strip, wherein the process comprises the steps of heating to 1230 ℃ in a furnace heating mode, preserving heat for 1-2 hours, and then cooling to room temperature in the furnace to finally obtain the Ni-W alloy baseband with strong cubic texture. The method can obtain strong cubic texture in the Ni-W alloy baseband with high W content.
Description
Technical Field
The invention belongs to the technical field of high-temperature coating superconductor strip strengthening texture metal base bands, and particularly relates to a preparation method of a Ni-W alloy base band with high W content.
Background
The high-temperature superconducting tape has special physical properties, so that the high-temperature superconducting tape has wide application value in the fields of strong current and weak current, and for the second generation of coated superconducting tapes, the RABiTS technology is one of the main methods for preparing the coated superconducting tapes, and the main methods are as follows: a transition layer and a superconducting layer are epitaxially grown on a tough metal base band with a biaxial texture, and the metal base band used for a coated superconducting strip needs to have strong cubic texture, high strength and no ferromagnetism. At present, commercial Ni-5at.% W alloy base bands are easy to obtain strong cubic texture, but the yield strength at room temperature is still to be further improved, and the base bands have ferromagnetism in a liquid nitrogen temperature zone, so that the base bands still cannot meet the requirements of high-performance superconducting strips, and further application of the coated superconducting strips is limited. The yield strength of the Ni-W alloy baseband with high W content can be improved by increasing the W atom content, the magnetic property can be reduced, but a strong cubic texture is difficult to form by the traditional method, the content of the cubic texture is improved by adopting the recovery heat treatment between warm rolling or multiple cold rolling, and the important research value and industrial significance are realized by how to simplify the process to improve the strength of the cubic texture in the Ni-W alloy baseband with high W content.
Disclosure of Invention
The invention aims to provide a preparation method of a high-W-content Ni-W alloy baseband, which can obtain a strong cubic texture in the high-W-content Ni-W alloy baseband.
The invention adopts the following technical scheme for solving the technical problems, and the preparation method of the Ni-W alloy baseband with high W content is characterized by comprising the following specific steps:
(1) preparation of continuous casting alloy ingot
Obtaining an alloy ingot by adopting a continuous casting technology, wherein the alloy ingot comprises 10-12 at.% W and the balance Ni, the casting temperature is 1300-1320 ℃, the temperature of primary cooling water is 20-23 ℃, the flow of secondary cooling water is 30-33 mL/min, the blank drawing speed is 50-53 mm/min, and the thickness of the alloy ingot is 150 mm;
(2) hot rolling of continuous casting alloy ingots
Hot rolling the alloy ingot obtained in the step S1 to a thickness of 12-15 mm, wherein the hot rolling process is 1180-1220 ℃, the temperature is kept for 50 minutes, the rolling pass is 6, and the hot rolling speed is 100-200 m/min;
(3) cold rolling of hot-rolled sheet
Polishing the surface of the hot rolled plate obtained in the step S2 to remove oxide skin, and then carrying out cold rolling, wherein the cold rolling deformation is 95-99%, the pass deformation is 8-12%, and the cold rolling speed is 300-400 m/min;
(4) recrystallization of alloy strip
And (4) recrystallizing and annealing the cold-rolled alloy strip obtained in the step (S3), heating to 1230 ℃ in a furnace heating mode, preserving the heat for 1-2 hours, cooling to room temperature in the furnace, and finally obtaining the Ni-W alloy baseband with strong cubic texture.
Compared with the prior art, the invention has the following beneficial effects: the invention adopts a continuous casting method to prepare the alloy ingot, regular columnar crystal structure can be obtained through the control of the continuous casting process, the columnar crystal structure is mainly cubic orientation, the cubic orientation in the initial columnar crystal is inherited to a final base band in the subsequent rapid deformation and recrystallization annealing processes to form strong cubic texture, and the method is suitable for industrial production.
Drawings
FIG. 1 is a {111} plane pole view of the surface of a strongly cubic Ni-W alloy substrate obtained in example 1;
FIG. 2 is a {001} plane pole diagram of the surface of a Ni-W alloy base strip having a strong cubic texture obtained in example 2.
Detailed Description
The present invention is described in further detail below with reference to examples, but it should not be construed that the scope of the above subject matter of the present invention is limited to the following examples, and that all the technologies realized based on the above subject matter of the present invention belong to the scope of the present invention.
Example 1
Obtaining an alloy ingot by adopting a continuous casting technology, wherein the alloy ingot comprises 10at.% W and the balance of Ni, the casting temperature is 1320 ℃, the temperature of primary cooling water is 20-23 ℃, the flow rate of secondary cooling water is 30mL/min, the blank drawing speed is 53mm/min, and the thickness of the alloy ingot is 150 mm; carrying out hot rolling on the continuous casting alloy ingot to a thickness of 12mm, wherein the hot rolling process is to keep the temperature at 1180 ℃ for 50 minutes, the rolling pass is 6 passes, and the hot rolling speed is 100 m/min; polishing the surface of the hot rolled plate to remove oxide skin, and then carrying out cold rolling, wherein the cold rolling deformation is 95%, the pass deformation is 8%, and the cold rolling speed is 300 m/min; and (3) carrying out recrystallization annealing on the cold-rolled alloy strip, wherein the process comprises the steps of heating to 1230 ℃ along with a furnace heating mode, keeping the temperature for 1 hour, and then cooling to room temperature along with the furnace to finally obtain the Ni-W alloy baseband with strong cubic texture. The {111} plane pole figure of the surface of the Ni-W alloy base band with strong cubic texture is shown in figure 1; the yield strength of the Ni-W alloy base band at room temperature is 730MPa, which is obviously higher than that of the Ni-5at.% W alloy base band.
Example 2
Obtaining an alloy ingot by adopting a continuous casting technology, wherein the alloy ingot comprises 12at.% W and the balance Ni, the casting temperature is 1320 ℃, the temperature of primary cooling water is 20-23 ℃, the flow of secondary cooling water is 33mL/min, the blank drawing speed is 50mm/min, and the thickness of the alloy ingot is 150 mm; carrying out hot rolling on the continuous casting alloy ingot to a thickness of 15mm, wherein the hot rolling process is carried out at 1220 ℃ for 50 minutes, the rolling pass is 6, and the hot rolling speed is 100 m/min; polishing the surface of the hot rolled plate to remove oxide skin, and then carrying out cold rolling, wherein the cold rolling deformation is 99%, the pass deformation is 12%, and the cold rolling speed is 400 m/min; and (3) carrying out recrystallization annealing on the cold-rolled alloy strip, wherein the process comprises the steps of heating to 1230 ℃ along with a furnace heating mode, keeping the temperature for 2 hours, and then cooling to room temperature along with the furnace to finally obtain the Ni-W alloy baseband with strong cubic texture. The {001} plane pole figure of the surface of the Ni-W alloy base band with strong cubic texture is shown in FIG. 2; the yield strength of the Ni-W alloy base band at room temperature is 850MPa, which is obviously higher than that of the Ni-5at.% W alloy base band.
The foregoing embodiments illustrate the principles, principal features and advantages of the invention, and it will be understood by those skilled in the art that the invention is not limited to the foregoing embodiments, which are merely illustrative of the principles of the invention, and that various changes and modifications may be made therein without departing from the scope of the principles of the invention.
Claims (1)
1. A preparation method of a Ni-W alloy baseband with high W content is characterized by comprising the following specific steps:
(1) preparation of continuous casting alloy ingot
Obtaining an alloy ingot by adopting a continuous casting technology, wherein the alloy ingot comprises 10-12 at.% W and the balance Ni, the casting temperature is 1300-1320 ℃, the temperature of primary cooling water is 20-23 ℃, the flow of secondary cooling water is 30-33 mL/min, the blank drawing speed is 50-53 mm/min, and the thickness of the alloy ingot is 150 mm;
(2) hot rolling of continuous casting alloy ingots
Carrying out hot rolling on the alloy ingot obtained in the step (1) to a thickness of 12-15 mm, wherein the hot rolling process is carried out at 1180-1220 ℃, the temperature is kept for 50 minutes, the rolling pass is 6, and the hot rolling speed is 100-200 m/min;
(3) cold rolling of hot-rolled sheet
Polishing the surface of the hot rolled plate obtained in the step (2) to remove oxide skin, and then carrying out cold rolling, wherein the cold rolling deformation is 95-99%, the pass deformation is 8-12%, and the cold rolling speed is 300-400 m/min;
(4) recrystallization of alloy strip
And (4) carrying out recrystallization annealing on the cold-rolled alloy strip obtained in the step (3), heating the cold-rolled alloy strip to 1230 ℃ in a furnace heating mode, keeping the temperature for 1-2 hours, cooling the cold-rolled alloy strip to room temperature in the furnace, and finally obtaining the Ni-W alloy baseband with strong cubic texture.
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