A zirconium material, its preparation method and application

Abstract

This invention belongs to the field of alloy materials technology, specifically relating to a zirconium material, its preparation method, and its applications. The zirconium material provided by this invention comprises a zirconium matrix and oxygen existing in the form of interstitial solid solution; the mass percentage of oxygen in the zirconium material is 0.3~0.6%. This invention adds a small amount of oxygen to zirconium in the form of zirconium oxide powder, where the interstitial solid solution strengthening effect of oxygen greatly improves the yield strength of zirconium; simultaneously, multi-stage rolling can eliminate defects in the ingot. Rolling at higher temperatures results in strong atomic diffusion, allowing for more thorough dynamic recovery and recrystallization. Rolling at lower temperatures slows down the recrystallization rate, leading to more dislocations accumulating during deformation and finer recrystallized grains, thereby significantly improving strength (fine-grain strengthening) while maintaining a certain level of plasticity.

Description

Technical Field

[0001] This invention belongs to the field of alloy materials technology, specifically relating to a zirconium material, its preparation method, and its application. Background Technology

[0002] Zirconium metal, due to its excellent biocompatibility, good corrosion resistance in physiological environments, and non-cytotoxicity, shows broad application prospects in biomedical fields (such as dental and orthopedic implants and surgical instruments). Currently, commercially available zirconium materials used in biomedicine are mainly industrial pure zirconium, with some modified alloys developed by adding alloying elements such as niobium, titanium, and tantalum, aiming to further improve its mechanical properties and biocompatibility. However, while pursuing high strength, the existing alloy systems still need to optimize their plasticity, processability, and long-term service stability under certain complex physiological environments. Summary of the Invention

[0003] In view of this, the present invention provides a zirconium material, its preparation method and application. The zirconium material provided by the present invention has both good mechanical properties and plasticity, thus expanding the application range of zirconium materials.

[0004] To address the aforementioned technical problems, the present invention provides a zirconium material comprising a zirconium matrix and oxygen present in the form of an interstitial solid solution. The zirconium material contains 0.3-0.6% oxygen by mass.

[0005] The present invention also provides a method for preparing the zirconium material described in the above technical solution, comprising the following steps: Zirconium and zirconium oxide are mixed according to the element mass ratio and then smelted to obtain zirconium oxide alloy ingots; The zirconium oxide alloy ingot is subjected to homogenization treatment, multi-stage rolling, solution treatment and quenching in sequence to obtain the zirconium material.

[0006] Preferably, the homogenization treatment is performed at a temperature of 940~960℃ for 7~9h; the homogenization treatment is carried out under a protective atmosphere, which includes argon.

[0007] Preferably, the multi-stage rolling process includes a first-stage hot rolling, a second-stage hot rolling, and a third-stage hot rolling performed sequentially.

[0008] Preferably, the preheating temperature of the first-stage hot rolling is 870~930℃, and the preheating time is 28~32min; The temperature of the first stage hot rolling is 870~930℃, the reduction rate of each pass is 5~10%, the heating time between each pass is 2.8~3.2min, and the total deformation is 25~30%.

[0009] Preferably, the preheating temperature of the second-stage hot rolling is 670~730℃, and the preheating time is 28~32min; The second-stage hot rolling temperature is 670~730℃, the reduction rate per pass is 5~10%, the heating time between passes is 2.8~3.2min, and the total deformation is 20~25%.

[0010] Preferably, the preheating temperature of the third-stage hot rolling is 470~530℃, and the preheating time is 28~32min; The temperature of the third-stage hot rolling is 470~530℃, the reduction rate of each pass is 5~10%, the heating time between each pass is 4.8~5.2min, and the total deformation is 30~35%.

[0011] Preferably, the solution treatment temperature is 470~530℃, and the holding time is 0.8~1.2h; the solution treatment is carried out under a protective atmosphere, which includes argon.

[0012] Preferably, the melting is a non-consumable vacuum arc melting.

[0013] The present invention also provides the application of the zirconium material described in the above technical solution or the zirconium material prepared by the preparation method described in the above technical solution in the aerospace or biomedical fields.

[0014] This invention provides a zirconium material comprising a zirconium matrix and oxygen present in the form of an interstitial solid solution; the mass percentage of oxygen in the zirconium material is 0.3-0.6%. This invention adds a small amount of oxygen to zirconium in the form of zirconium oxide powder, where the interstitial solid solution strengthening effect of oxygen greatly improves the yield strength of zirconium; simultaneously, multi-stage rolling can eliminate defects in the ingot. Rolling at higher temperatures results in strong atomic diffusion, allowing for more thorough dynamic recovery and recrystallization. Rolling at lower temperatures slows down the recrystallization rate, leading to more dislocations accumulating during deformation and finer recrystallized grains, thereby significantly improving strength (fine-grain strengthening) while maintaining a certain level of plasticity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the shape and dimensions of the tensile specimen used for elongation testing. Figure 2 The tensile curves are those of the zirconium materials prepared in Examples 1-3 and Comparative Example 1. Figure 3 The XRD patterns of the zirconium materials prepared in Examples 1-3 and Comparative Example 1 are shown below. Figure 4 The OM diagrams are of the zirconium materials prepared in Examples 1-3 and Comparative Example 1; Figure 5 The images show the TEM bright-field and HRTEM images of the zirconium material prepared in Example 3. Detailed Implementation

[0016] The present invention provides a zirconium material comprising a zirconium matrix and oxygen present in the form of an interstitial solid solution.

[0017] In this invention, the oxygen content in the zirconium material is 0.3-0.6% by mass, specifically 0.3%, 0.41% or 0.51%.

[0018] The present invention also provides a method for preparing the zirconium material described in the above technical solution, comprising the following steps: Zirconium and zirconium oxide are mixed according to the element mass ratio and then smelted to obtain zirconium oxide alloy ingots; The zirconium oxide alloy ingot is subjected to homogenization treatment, multi-stage rolling, solution treatment and quenching in sequence to obtain the zirconium material.

[0019] In this invention, unless otherwise specified, all materials are commercially available products.

[0020] This invention involves mixing zirconium and zirconium oxide according to an elemental mass ratio and then smelting them to obtain a zirconium oxide alloy ingot. In this invention, the zirconium can be industrially pure zirconium; the zirconium oxide can be zirconium oxide powder, the particle size of the zirconium oxide powder can be 780~820nm, specifically 800nm; the purity of the zirconium oxide can be above 99%, specifically 99.9%.

[0021] In this invention, the melting can be non-consumable vacuum arc melting; the ingot can be repeatedly melted and cast 6-7 times during the melting process. In this invention, after melting, the process may further include: cooling the melted system to room temperature; the room temperature can be 20-35°C, or even 25-30°C. In this invention, the melting can be carried out under a protective atmosphere, which can be argon.

[0022] After obtaining the zirconium-oxygen alloy ingot, the present invention sequentially performs homogenization treatment, multi-stage rolling, solution treatment, and quenching on the zirconium alloy ingot to obtain the zirconium material. In the present invention, the homogenization treatment temperature can be 940~960℃, specifically 950℃; the homogenization treatment holding time can be 7~9h, specifically 8h; the homogenization treatment can be carried out under a protective atmosphere, which may include argon. The present invention can eliminate component segregation and achieve microstructure homogenization through homogenization treatment.

[0023] In this invention, the multi-stage rolling process may include a first-stage hot rolling, a second-stage hot rolling, and a third-stage hot rolling performed sequentially. In this invention, the pre-rolling soaking temperature of the first-stage hot rolling can be 870~930℃, specifically 880℃, 890℃, 900℃, 910℃, or 920℃; the pre-rolling holding time can be 28~32 min, specifically 30 min. In this invention, the temperature of the first-stage hot rolling can be 870~930℃, specifically 880℃, 890℃, 900℃, 910℃, or 920℃; the first-stage hot rolling can be a multi-pass rolling process, with a reduction rate of 5~10% per pass, specifically 6%, 7%, 8%, or 9%; the heating interval between each pass can be 2.8~3.2 min, specifically 3 min; the total deformation of the first-stage hot rolling can be 23~27%, specifically 25%, 26%, or 28%.

[0024] In this invention, the pre-rolling soaking temperature of the second-stage hot rolling can be 670~730℃, specifically 680℃, 690℃, 700℃, 710℃, or 720℃; the pre-rolling holding time can be 28~32min, specifically 30min. In this invention, the temperature of the second-stage hot rolling can be 670~730℃, specifically 680℃, 690℃, 700℃, 710℃, or 720℃; the second-stage hot rolling can be a multi-pass rolling process, with a reduction rate of 5~10% per pass, specifically 5%, 6%, 7%, 8%, or 9%; the heating interval between each pass can be 2.8~3.2min, specifically 3min; the total deformation of the second-stage hot rolling can be 20~25%, specifically 21%, 23%, or 25%.

[0025] In this invention, the pre-rolling soaking temperature of the third-stage hot rolling can be 470~530℃, specifically 480℃, 490℃, 500℃, 510℃, or 520℃; the pre-rolling holding time can be 28~32min, specifically 30min. In this invention, the temperature of the third-stage hot rolling can be 470~530℃, specifically 480℃, 490℃, 500℃, 510℃, or 520℃; the third-stage hot rolling can be a multi-pass rolling process, with a reduction rate of 5~10% per pass, specifically 5%, 6%, 7%, 8%, or 9%; the heating interval between each pass can be 4.8~5.2min, specifically 5min; the total deformation of the third-stage hot rolling can be 30~35%, specifically 32%, 34%, or 35%.

[0026] In this invention, after each stage of hot rolling, the rolled product can be cooled to room temperature with water; the room temperature can be 20~35℃, or 25~30℃; the total deformation of the multi-stage rolling can be 80~85%, specifically 80%, 81% or 82%; the multi-stage rolling can be carried out in a muffle furnace.

[0027] In this invention, the zirconium material can be a plate, and the thickness of the plate can be 2~3mm, specifically 2.5mm.

[0028] This invention employs a process route combining vacuum arc melting and three-stage hot rolling. In subsequent hot deformation processing, it refines grains and breaks down the as-cast microstructure, improving the alloy's strength and ductility while simplifying the production process and enhancing its operability and controllability. Furthermore, by applying multiple deformation passes at different temperature ranges, this invention precisely controls the microstructure of zirconium alloys (especially grain size and crystal orientation), thereby improving their mechanical and processing properties.

[0029] In this invention, the solution treatment temperature can be 470~530℃, specifically 480℃, 490℃, 500℃, 510℃, or 520℃; the holding time for the solution treatment can be 0.8~1.2h, specifically 1h; the solution treatment can be carried out under a protective atmosphere, which may include argon. In this invention, the solution treatment can be carried out in a tube furnace. This invention, through solution treatment, can eliminate some of the effects of residual stress and deformation texture generated by hot rolling.

[0030] In this invention, the quenching may include water quenching; this invention has no special requirements for the water quenching, and it can be performed in accordance with conventional methods in the art. This invention enables control of the morphology and distribution of phase transformation products through quenching, preserving the microstructure obtained after hot rolling.

[0031] In this invention, the process after quenching may further include: sequentially grinding and cleaning the quenched product to obtain the zirconium material. Grinding removes the surface oxide layer. This invention does not impose special requirements on the grinding and cleaning processes; conventional methods in the art can be used.

[0032] This invention utilizes the synergistic effect of oxygen solid solution strengthening and microstructure evolution during hot working to achieve a significant increase in alloy strength while maintaining good plasticity, ultimately obtaining comprehensive mechanical properties that match high strength with good plasticity and toughness.

[0033] The present invention also provides the application of the zirconium material described in the above technical solution or the zirconium material prepared by the preparation method described in the above technical solution in the aerospace or biomedical fields.

[0034] To further illustrate the present invention, the technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0035] Example 1 79.3839g of industrial pure zirconium and 0.6161g of zirconium oxide powder with a purity of 99.9% and an average particle size of 800nm ​​(total weight of industrial pure zirconium and zirconium oxide powder 80g) were placed in a water-cooled copper crucible non-consumable vacuum arc furnace and melted under an argon atmosphere. The melting and casting process was repeated 6 times. The furnace was cooled to room temperature (25℃) to obtain a zirconium oxide alloy ingot.

[0036] Zirconium oxide alloy ingots were homogenized in a vacuum tube furnace at 950°C for 8 hours under an argon atmosphere. They were then transferred to a muffle furnace and heated to 900°C at a rate of 10°C / min, holding for 30 minutes. A first-stage hot rolling process was then performed on a twin-roll mill at 900°C using multiple passes, with each pass reducing the deformation by 8%, resulting in a total deformation of approximately 26%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was then placed in a 700°C muffle furnace and held for 30 minutes. A second-stage hot rolling process was then performed on a twin-roll mill at 700°C using multiple passes, with each pass reducing the deformation by 5%, resulting in a total deformation of approximately 23%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was placed in a muffle furnace at 500℃ and held for 30 minutes. It was then immediately removed and subjected to a third-stage hot rolling process on a twin-roll mill at 500℃ using multiple passes. Each pass resulted in a 5% reduction in deformation, for a total deformation of approximately 31%. The resulting zirconium-oxygen alloy sheet was then water-cooled to room temperature using room-temperature water. The total deformation from the first, second, and third stages of hot rolling was approximately 80%. The alloy sheet obtained from the third-stage hot rolling was placed in a tube furnace and subjected to solution treatment at 500℃ for 1 hour under an argon atmosphere, followed by cold water quenching. The oxide layer on the surface of the resulting sheet was polished and cleaned to obtain zirconium material, denoted as Zr-0.3O.

[0037] Example 2 79.0758g of industrial pure zirconium and 0.9242g of zirconium oxide powder with a purity of 99.9% and an average particle size of 800nm ​​(total weight of industrial pure zirconium and zirconium oxide powder 80g) were placed in a water-cooled copper crucible non-consumable vacuum arc furnace and melted under an argon atmosphere. The melting and casting process was repeated 6 times. The furnace was cooled to room temperature (25℃) to obtain a zirconium oxide alloy ingot.

[0038] Zirconium oxide alloy ingots were homogenized in a vacuum tube furnace at 950°C for 8 hours under an argon atmosphere. They were then transferred to a muffle furnace and heated to 900°C at a rate of 10°C / min, holding for 30 minutes. A first-stage hot rolling process was then performed on a twin-roll mill at 900°C using multiple passes, with each pass reducing the deformation by 8%, resulting in a total deformation of approximately 28%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was then placed in a 700°C muffle furnace and held for 30 minutes. A second-stage hot rolling process was then performed on a twin-roll mill at 700°C using multiple passes, with each pass reducing the deformation by 5%, resulting in a total deformation of approximately 22%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was placed in a muffle furnace at 500℃ and held for 30 minutes. It was then immediately removed and subjected to a third-stage hot rolling process on a twin-roll mill at 500℃ using multiple passes. Each pass resulted in a 5% reduction in deformation, for a total deformation of approximately 32%. The resulting zirconium-oxygen alloy sheet was then water-cooled to room temperature. The total deformation from the first, second, and third hot rolling stages was approximately 82%. The alloy sheet obtained from the third-stage hot rolling was placed in a tube furnace and solution-treated at 500℃ for 1 hour under an argon atmosphere, followed by cold water quenching. The oxide layer on the surface of the resulting sheet was polished and cleaned to obtain zirconium material, denoted as Zr-0.41O.

[0039] Example 3 78.7678g of industrial pure zirconium and 1.2322g of zirconium oxide powder with a purity of 99.9% and an average particle size of 800nm ​​(total weight of industrial pure zirconium and zirconium oxide powder 80g) were placed in a water-cooled copper crucible non-consumable vacuum arc furnace and melted under an argon atmosphere. The melting and casting process was repeated 6 times. The furnace was cooled to room temperature (25℃) to obtain a zirconium oxide alloy ingot.

[0040] Zirconium oxide alloy ingots were homogenized in a vacuum tube furnace at 950°C for 8 hours under an argon atmosphere. They were then transferred to a muffle furnace and heated to 900°C at a rate of 10°C / min, holding for 30 minutes. A first-stage hot rolling process was then performed on a twin-roll mill at 900°C using multiple passes, with each pass reducing the deformation by 8%, resulting in a total deformation of approximately 25%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was then placed in a 700°C muffle furnace and held for 30 minutes. A second-stage hot rolling process was then performed on a twin-roll mill at 700°C using multiple passes, with each pass reducing the deformation by 5%, resulting in a total deformation of approximately 23%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was placed in a muffle furnace at 500℃ and held for 30 minutes. It was then immediately removed and subjected to a third-stage hot rolling process on a twin-roll mill at 500℃ using multiple passes. Each pass resulted in a 5% reduction in deformation, for a total deformation of approximately 33%. The resulting zirconium-oxygen alloy sheet was then water-cooled to room temperature. The total deformation from the first, second, and third hot rolling stages was approximately 81%. The alloy sheet obtained from the third-stage hot rolling was placed in a tube furnace and solution-treated at 500℃ for 1 hour under an argon atmosphere, followed by cold water quenching. The oxide layer on the surface of the resulting sheet was polished and cleaned to obtain zirconium material, denoted as Zr-0.51O.

[0041] Comparative Example 1 78.4598g of industrial pure zirconium and 1.5402g of zirconium oxide powder with a purity of 99.9% and an average particle size of 800nm ​​(total weight of industrial pure zirconium and zirconium oxide powder 80g) were placed in a water-cooled copper crucible non-consumable vacuum arc furnace and melted under an argon atmosphere. The melting and casting process was repeated 6 times. The furnace was cooled to room temperature (25℃) to obtain a zirconium oxide alloy ingot.

[0042] Zirconium oxide alloy ingots were homogenized in a vacuum tube furnace at 950°C for 8 hours under an argon atmosphere. They were then transferred to a muffle furnace and heated to 900°C at a rate of 10°C / min, holding for 30 minutes. A first-stage hot rolling process was then performed on a twin-roll mill at 900°C using multiple passes, with each pass reducing the deformation by 8%, resulting in a total deformation of approximately 25%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature. The water-cooled sample was then placed in a 700°C muffle furnace and held for 30 minutes. A second-stage hot rolling process was then performed on a twin-roll mill at 700°C using multiple passes, with each pass reducing the deformation by 5%, resulting in a total deformation of approximately 22%. The resulting zirconium oxide alloy sheet was water-cooled to room temperature using room temperature water. The water-cooled sample was placed in a muffle furnace at 500℃ and held for 30 minutes. It was then immediately removed and subjected to a third-stage hot rolling process on a twin-roll mill at 500℃ using multiple passes. Each pass resulted in a 5% reduction in deformation, for a total deformation of approximately 33%. The resulting zirconium-oxygen alloy sheet was then water-cooled to room temperature using room-temperature water. The total deformation from the first, second, and third stages of hot rolling was approximately 80%. The alloy sheet obtained from the third-stage hot rolling was placed in a tube furnace and solution-treated at 500℃ for 1 hour under an argon atmosphere, followed by cold water quenching. The oxide layer on the surface of the resulting sheet was polished and cleaned to obtain zirconium material, denoted as Zr-0.64O.

[0043] The oxygen content in the zirconium materials prepared in Examples 1-3 and Comparative Example 1 was determined using a nitrogen, hydrogen, and oxygen analyzer (LECO TCH600, USA). The results are listed in Table 1.

[0044] The zirconium materials prepared in Examples 1-3 and Comparative Example 1 were used to prepare... Figure 1 Tensile specimens of the shape and size shown were tested for elongation using an extensometer, specifically under conditions of 5 × 10⁻⁶. -4 s -1 The elongation results obtained by stretching at room temperature (25°C) at a certain speed are listed in Table 1.

[0045] According to ASTM E8M standard, the strain rate for room temperature tensile testing of the zirconium materials prepared in Examples 1-3 and Comparative Example 1 using an Instron 5982 machine is (5 × 10⁻⁶). -4 s -1 The obtained stretching curve is as follows: Figure 2 As shown in the figure; the results of elastic modulus, yield strength and tensile strength obtained from the tensile curve are listed in Table 1.

[0046] Table 1. Composition and mechanical properties of zirconium materials in Examples 1-3 and Comparative Example 1

[0047] Combining Table 1 and Figure 2 It can be seen that the zirconium material provided by the present invention has good mechanical properties and plasticity when the oxygen content is limited to the range of 0.3~0.6%. As the oxygen content increases, the strength of the zirconium material is greatly improved while maintaining a certain degree of plasticity; when the oxygen content is too high, its plasticity will be significantly reduced.

[0048] The XRD patterns of the zirconium materials prepared in Examples 1-3 and Comparative Example 1 were obtained using an X-ray diffractometer (Smart Lab), as shown below. Figure 3 As shown. By Figure 3 It can be seen that the phase composition of zirconium-oxygen alloy does not change after the oxygen content in zirconium material increases; it still has a close-packed hexagonal crystal structure.

[0049] The zirconium materials prepared in Examples 1-3 and Comparative Example 1 were observed using an optical microscope (OM), and the resulting OM images are shown below. Figure 4 As shown. By Figure 4 It can be seen that the zirconium material provided by the present invention has refined grains, and the refined grain boundaries improve the mechanical properties of the zirconium material.

[0050] The zirconium material prepared in Example 3 was observed using transmission electron microscopy (TEM), and the resulting bright-field pattern and high-resolution transmission image are shown below. Figure 5 As shown, the two smaller images in the middle and right are high-resolution transmission images of the boxed portion of the left image. Figure 5 It can be seen that the zirconium material provided by this invention has obvious oxygen atom embedding within its grains, indicating a localized lattice distortion / short-range ordered structure induced by oxygen atom solid solution. These structures can effectively hinder dislocation movement and improve the strength of the zirconium material. At the same time, they do not completely lock dislocation slip; dislocations can still slip, entangle, and rearrange under applied stress, thereby maintaining a certain strain hardening capacity and exhibiting superior strength-ductility synergy.

[0051] In Comparative Example 1, as the oxygen content continues to increase, the locally ordered structure transforms or is destroyed by strong lattice distortion, resulting in a more disordered and discontinuous lattice contrast. The interstitial oxygen atoms significantly enhance the lattice distortion and dislocation pinning effect on the close-packed hexagonal matrix, causing the material to gradually shift from "solid solution strengthening-dominated" to "oxygen-induced embrittlement-dominated," thereby significantly reducing the plasticity of the zirconium material.

[0052] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. People can obtain other embodiments based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A zirconium material, characterized in that, Including the zirconium matrix and oxygen present in the form of interstitial solid solutions; The zirconium material contains 0.3-0.6% oxygen by mass.

2. The method for preparing the zirconium material according to claim 1, characterized in that, Includes the following steps: Zirconium and zirconium oxide are mixed according to the element mass ratio and then smelted to obtain zirconium oxide alloy ingots; The zirconium oxide alloy ingot is subjected to homogenization treatment, multi-stage rolling, solution treatment and quenching in sequence to obtain the zirconium material.

3. The preparation method according to claim 2, characterized in that, The homogenization treatment is carried out at a temperature of 940~960℃ for 7~9h; the homogenization treatment is carried out under a protective atmosphere, which includes argon.

4. The preparation method according to claim 2, characterized in that, The multi-stage rolling process includes a first-stage hot rolling, a second-stage hot rolling, and a third-stage hot rolling, performed sequentially.

5. The preparation method according to claim 4, characterized in that, The preheating temperature of the first-stage hot rolling is 870~930℃, and the preheating time is 28~32min; The temperature of the first stage hot rolling is 870~930℃, the reduction rate of each pass is 5~10%, the heating time between each pass is 2.8~3.2min, and the total deformation is 25~30%.

6. The preparation method according to claim 4, characterized in that, The preheating temperature of the second-stage hot rolling is 670~730℃, and the preheating time is 28~32min; The second-stage hot rolling temperature is 670~730℃, the reduction rate per pass is 5~10%, the heating time between passes is 2.8~3.2min, and the total deformation is 20~25%.

7. The preparation method according to claim 4, characterized in that, The preheating temperature of the third-stage hot rolling is 470~530℃, and the preheating time is 28~32min. The temperature of the third-stage hot rolling is 470~530℃, the reduction rate of each pass is 5~10%, the heating time between each pass is 4.8~5.2min, and the total deformation is 30~35%.

8. The preparation method according to claim 2, characterized in that, The solution treatment is performed at a temperature of 470~530℃ for a holding time of 0.8~1.2h; the solution treatment is carried out under a protective atmosphere, which includes argon.

9. The preparation method according to claim 2, characterized in that, The melting process is a non-consumable vacuum arc melting process.

10. The application of the zirconium material according to claim 1 or the zirconium material prepared by the preparation method according to any one of claims 2 to 9 in the aerospace or biomedical fields.

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