CN111270174A - Preparation method of wrought magnesium alloy plate with mixed crystal structure and non-basal texture - Google Patents
Preparation method of wrought magnesium alloy plate with mixed crystal structure and non-basal texture Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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Abstract
The invention discloses a preparation method of a wrought magnesium alloy plate with a mixed crystal structure and a non-basal texture, which comprises the following steps: s1, carrying out hot rolling-shearing-continuous bending on the deformed magnesium alloy plate, wherein the rolling pass reduction is 10-15%, and then quenching; s2, cutting the quenched flat plate, reheating to a rolling temperature, turning the deformed magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, then carrying out hot rolling-shearing-continuous bending, wherein the rolling pass reduction is 10-15%, and then quenching; s3, repeating S2 until the accumulated reduction of the deformed magnesium alloy sheet is not less than 40%; s4, recrystallizing and annealing at the annealing temperature of 300-450 ℃ for 1-8 min, and then quenching; s5, performing recovery annealing at the annealing temperature of 100-220 ℃ for 60-600 min. The method can realize the mutual coordination of the mixed crystal structure and the non-basal texture in the wrought magnesium alloy plate, and further realize the mutual coordination of the strength performance, the plasticity performance and the room temperature forming performance of the wrought magnesium alloy plate.
Description
Technical Field
The invention relates to the technical field of metal plate rolling, in particular to a preparation method of a magnesium alloy plate with a mixed crystal structure and a non-basal texture.
Background
The independent sliding system of the wrought magnesium alloy plate at room temperature is limited due to the close-packed hexagonal crystal structure of the wrought magnesium alloy plate, so that the wrought magnesium alloy plate has poor room-temperature plastic deformation capability. In addition, the deformed magnesium alloy plate is easy to form a strong basal plane texture in the processing and preparation process, so that the subsequent forming and processing are difficult, and the large-scale application of the deformed magnesium alloy plate is restricted. The weak/non-basal surface texture of the deformed magnesium alloy plate is realized by texture regulation and control, and the method is an important means for improving the room temperature deformability of the deformed magnesium alloy plate.
At present, the special processing technology for regulating and controlling the texture of the wrought magnesium alloy sheet is widely researched at home and abroad, and comprises single-roller driving rolling, repeated cold rolling-annealing treatment, different-speed rolling, high-speed rolling, cold rolling-electric pulse treatment and the like. By utilizing the special processing technology, the basal plane texture strength of the deformed magnesium alloy plate can be effectively reduced, and the aim of weakening the basal plane texture is fulfilled, so that the room-temperature deformation capability of the plate is improved to a certain extent, but the constraint of the basal plane texture is still difficult to get rid of. According to the reported equal channel angular rolling-continuous bending-annealing (ECAR-CB-A) process, common rolling deformation, shearing deformation and continuous multi-pass bending deformation are organically combined, and static recrystallization heat treatment is combined, so that a non-basal plane special texture is successfully prepared in the deformed magnesium alloy sheet, namely, a special non-basal plane texture is completely separated from a double peak deflected by 40 degrees from a normal direction ND to a rolling direction RD, and the room temperature forming performance of the deformed magnesium alloy sheet is remarkably improved, wherein the cup-drawing experimental value is improved from 4.6mm of the basal plane texture sheet to 7.4mm of the non-basal plane texture sheet.
Research shows that the plasticity of the special non-basal texture wrought magnesium alloy plate prepared by the ECAR-CB-A process is obviously improved compared with that of a common basal texture hot rolling wrought magnesium alloy plate, and the fracture elongation of the special non-basal texture wrought magnesium alloy plate is up to 24% when the special non-basal texture wrought magnesium alloy plate is stretched along the rolling direction and far exceeds that of the common basal texture hot rolling wrought magnesium alloy plate by 14%. However, the strength performance of the special non-basal texture wrought magnesium alloy plate prepared by the ECAR-CB-A process is poor, and the yield strength of the special non-basal texture wrought magnesium alloy plate in the rolling direction stretching is only about 73MPa and is far lower than that of a common basal texture hot-rolled wrought magnesium alloy plate (about 162 MPa). Analysis shows that the root cause of the phenomenon of significant strength reduction of the sheet is the texture softening effect caused by the introduction of the special non-basal texture. As is well known, the reduction of the strength of the magnesium alloy sheet restricts the application range of the formed parts, which means that although the special non-basal plane texture can significantly improve the plasticity and room temperature forming performance of the sheet, if the strength of the sheet cannot be effectively improved, a high-performance deformed magnesium alloy sheet with the strength, the plasticity and the room temperature forming performance coordinated with each other cannot be prepared, and further, the requirements of industrial application cannot be met.
Research results show that the mixed crystal structure, namely fine crystal/ultrafine crystal and coarse crystal grains exist at the same time, and the plastic property and the strength property of the metal material can be improved at the same time. At present, a liner plate rolling process based on a severe plastic deformation concept can already prepare a deformed magnesium alloy plate with a mixed crystal structure, so that the strength performance (yield strength-221 MPa) and the plasticity performance (elongation at break-26%) of the plate are remarkably improved, but the prepared plate is still in a basal plane texture, and therefore the room temperature forming performance of the plate is not remarkably improved compared with that of a common basal plane texture deformed magnesium alloy plate.
Disclosure of Invention
The invention aims to provide a preparation method of a wrought magnesium alloy plate with a mixed crystal structure and a non-basal texture, which can realize the mutual coordination of the mixed crystal structure and the non-basal texture in the wrought magnesium alloy plate so as to further realize the mutual coordination of the strength performance, the plasticity performance and the room temperature forming performance of the wrought magnesium alloy plate.
The preparation method of the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture comprises the following steps:
s1, carrying out hot rolling-shearing-continuous bending on the deformed magnesium alloy plate, wherein the rolling pass reduction is 10-15%, and then quenching;
s2, cutting the quenched flat plate, reheating to a rolling temperature, turning the deformed magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, then carrying out hot rolling-shearing-continuous bending, wherein the rolling pass reduction is 10-15%, and then quenching;
s3, repeating S2 until the accumulated reduction of the deformed magnesium alloy sheet is not less than 40%;
s4, recrystallizing and annealing at the annealing temperature of 300-450 ℃ for 1-8 min, and then quenching;
s5, performing recovery annealing at the annealing temperature of 100-220 ℃ for 60-600 min.
Further, before hot rolling of the deformed magnesium alloy plate in S1, preserving heat for 5-15 min at the temperature of 450-550 ℃; and (3) preserving the heat of the deformed magnesium alloy plate in the S2 for 2-10 min at the temperature of 450-550 ℃ before hot rolling.
Further, the deformed magnesium alloy plate is subjected to high-temperature oxidation prevention treatment before heating, recrystallization annealing and recovery annealing before hot rolling.
Further, the high-temperature oxidation prevention treatment is to wrap the deformed magnesium alloy plate by using tin foil paper.
Further, the fillet radius of the shearing-continuously bending shearing corner in the S1 is 2-4 mm, and the fillet radius of the bending corner is 7-12 mm.
Furthermore, the rotating speed of the upper and lower rollers of the hot rolling is 20-60 m/min, so that the rolled plate has enough power to pass through a channel of the shearing-continuous bending die, and cracks generated when the plate enters the shearing-continuous bending die due to the fact that the rotating speed of the upper and lower rollers is too high are avoided.
Further, the cutting in the S2 is carried out at a position 4-6 mm behind the last corner position of the shearing-continuous bending die, so that the flatness of the plate is ensured.
Further, the thickness of the deformed magnesium alloy plate in the S1 is 1-3 mm.
Compared with the prior art, the invention has the following beneficial effects.
1. According to the invention, sufficient plastic strain is accumulated in the deformed magnesium alloy plate through multi-pass hot rolling-shearing-continuous multi-pass bending, namely the accumulated reduction of the deformed magnesium alloy plate is not less than 40%, and then a large amount of non-basal plane dislocation and {10-12} stretching twin crystal are introduced, so that the change of the texture and the structure of the deformed magnesium alloy plate is primarily realized. And then carrying out short-time recrystallization annealing treatment on the deformed magnesium alloy plate to enable static recrystallization to occur in the plate and form a special non-basal texture with small-grain-size recrystallized grains and double peaks completely separated. And finally, carrying out long-time recovery annealing on the plate, so that the coarse grains which are not recrystallized in the plate are subjected to dislocation structure rearrangement to form a small-angle crystal boundary, and further realizing the stabilization of the mixed crystal structure of the plate. The preparation method can realize the bimodal separation non-basal surface formation of the texture of the wrought magnesium alloy plate, can synchronously realize the mixed crystallization of the texture of the wrought magnesium alloy plate, finally obtains the wrought magnesium alloy plate with the bimodal separation non-basal surface texture characteristic and the mixed crystal texture characteristic, and realizes the simultaneous improvement of the strength performance, the plasticity performance and the room temperature forming performance of the wrought magnesium alloy plate.
2. According to the invention, double annealing, recrystallization annealing and recovery annealing are adopted, and specific annealing temperature and heat preservation time are combined, so that the mutual coordination of a mixed crystal structure and a non-basal texture in the deformed magnesium alloy plate is realized, and the strength performance, the plasticity performance and the room-temperature forming performance of the deformed magnesium alloy plate are improved at the same time.
3. The shearing-continuous bending die is a multi-step die with equal rolling channel height and continuously bent channels, and can realize the processing and preparation of the deformed magnesium alloy plate by combining with a common rolling mill. In addition, because the deformation of the plate is carried out at high temperature, the method is well applicable to deformed magnesium alloys of different grades, including Mg-Al-Zn series, Mg-Al-Mn series and Mg-Zn-Zr series.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic structural texture characteristic diagram of an AZ31 magnesium alloy plate prepared according to a first embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
In a first embodiment, referring to fig. 1, a method for preparing a wrought magnesium alloy plate with a mixed crystal structure and a non-basal texture comprises the following steps:
s1, preheating an AZ31 magnesium alloy plate, namely wrapping a commercial hot-rolled AZ31 magnesium alloy plate with the thickness of 1.5mm by using tin foil paper to prevent high-temperature oxidation, heating the plate to 550 ℃ in a heating furnace at the heating rate of 10-15 ℃/min, and continuing to preserve heat for 10min after heating to a preset temperature. And (3) quickly transferring the preheated AZ31 magnesium alloy plate to a rolling mill, and carrying out ECAR-CB deformation, wherein the pass reduction is 15%, and the rotating speed of an upper roller and a lower roller is 30 m/min. And then, under the action of rolling friction force, continuously passing the AZ31 magnesium alloy plate through a multi-step die with the same rolling channel height and continuously bent channels to perform shearing and continuous multi-pass bending, thereby realizing composite deformation. And then putting the AZ31 magnesium alloy plate into water for quenching. The fillet radius R1 of the shearing corner of the multi-step die is 3mm, and the fillet radii R1, R2 and R3 of the continuous multi-pass bending corner are all 8 mm.
S2, cutting the AZ31 magnesium alloy plate subjected to one-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate by using tinfoil paper, reheating the plate to 550 ℃ in a heating furnace at the heating rate of 10-15 ℃/min, and continuing to preserve heat for 4min after heating to a preset temperature. And turning the AZ31 magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, and then carrying out hot rolling, shearing, continuous multi-pass bending and quenching.
S3, cutting the AZ31 magnesium alloy plate subjected to the two-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate by using tinfoil paper, reheating the plate to 550 ℃ in a heating furnace at the heating rate of 10-15 ℃/min, and continuing to preserve heat for 4min after heating to a preset temperature. And turning the AZ31 magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, and then carrying out hot rolling, shearing, continuous multi-pass bending and quenching.
And cutting the AZ31 magnesium alloy plate subjected to the three-pass ECAR-CB process at a position 5mm behind the third corner position of continuous multi-pass bending, wherein the thickness of the finally prepared plate is 0.8-0.9 mm, and the accumulated reduction of the AZ31 magnesium alloy plate is not less than 40%.
S4, carrying out short-time recrystallization annealing on the AZ31 magnesium alloy plate, heating the heating furnace to 350 ℃, heating at the rate of 10-15 ℃/min, keeping the temperature of the AZ31 magnesium alloy plate wrapped by the tin foil paper for 4min after reaching the preset temperature, and then putting the plate into water for quenching.
S5, carrying out long-time recovery annealing on the AZ31 magnesium alloy plate subjected to annealing recrystallization, heating the heating furnace to 200 ℃, heating at the rate of 10-15 ℃/min, keeping the temperature of the AZ31 magnesium alloy plate wrapped by the tin foil paper for 60min after reaching the preset temperature, and then putting the AZ31 magnesium alloy plate into water for quenching. It should be noted that other cooling methods, such as air cooling or furnace cooling, can be performed after the long-time recovery annealing treatment.
The AZ31 magnesium alloy plate prepared by the multi-pass ECAR-CB process and the double annealing process is subjected to electron back scattering diffraction analysis, and the result is shown in figure 2, so that the prepared plate has typical mixed crystal texture characteristics, and contains coarse grains of 100-150 mu m and fine grains of 2-12 mu m. In addition, texture analysis shows that the plate still has a special non-basal plane texture with double peaks completely separated, and the ND deflection angle to RD is about 55 degrees, so that the mutual coordination of the strength performance, the plasticity performance and the room temperature forming performance of the deformed magnesium alloy plate is realized.
In a second embodiment, a method for preparing a wrought magnesium alloy plate with a mixed crystal structure and a non-basal texture comprises the following steps:
s1, preheating an AM60 magnesium alloy plate, wrapping a commercial hot-rolled AM60 magnesium alloy plate with the thickness of 2.4mm by using tin foil paper to prevent high-temperature oxidation, heating the plate to 520 ℃ in a heating furnace at the heating rate of 10-15 ℃/min, and continuing to preserve heat for 15min after heating to a preset temperature. And (3) quickly transferring the preheated AM60 magnesium alloy plate to a rolling mill for ECAR-CB deformation, wherein the pass reduction is 10%, and the rotating speed of the upper roller and the lower roller is 35 m/min. And then, under the action of rolling friction force, continuously passing the AM60 magnesium alloy plate through a multi-step die with the same rolling channel height and continuously bent channels to perform shearing and continuous multi-pass bending, thereby realizing composite deformation. And then placing the AM60 magnesium alloy plate into water for quenching. The fillet radius R1 of the shearing corner of the multi-step die is 4mm, and the fillet radii R1, R2 and R3 of the continuous multi-pass bending corner are all 10 mm.
S2, cutting the AM60 magnesium alloy plate subjected to one-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate with tinfoil paper, reheating the plate to 520 ℃ in a heating furnace at a heating rate of 10-15 ℃/min, and continuing to preserve heat for 6min after heating to a preset temperature. And turning the AM60 magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, and then carrying out hot rolling-shearing-continuous multi-pass bending-quenching.
S3, cutting the AM60 magnesium alloy plate subjected to the two-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate with tinfoil paper, reheating the plate to 520 ℃ in a heating furnace at a heating rate of 10-15 ℃/min, and continuing to preserve heat for 4min after heating to a preset temperature. And turning the AM60 magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, and then carrying out hot rolling-shearing-continuous multi-pass bending-quenching.
Cutting the AM60 magnesium alloy plate subjected to the three-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate by using tinfoil paper, reheating the plate to 520 ℃ in a heating furnace at a heating rate of 10-15 ℃/min, and continuing to preserve heat for 3min after heating to a preset temperature. And turning the AM60 magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, and then carrying out hot rolling-shearing-continuous multi-pass bending-quenching.
Cutting the AM60 magnesium alloy plate subjected to the four-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate by using tinfoil paper, reheating the plate to 520 ℃ in a heating furnace at a heating rate of 10-15 ℃/min, and continuing to preserve heat for 3min after heating to a preset temperature. And turning the AM60 magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, and then carrying out hot rolling-shearing-continuous multi-pass bending-quenching.
Cutting the AM60 magnesium alloy plate subjected to the five-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wherein the thickness of the finally prepared plate is 1.1-1.3 mm, and the accumulated reduction of the AM60 magnesium alloy plate is not less than 40%.
S4, carrying out short-time recrystallization annealing on the AM60 magnesium alloy plate, heating the heating furnace to 380 ℃, wherein the heating rate is 10-15 ℃/min, keeping the temperature of the AM60 magnesium alloy plate wrapped by the tin foil paper for 6min after reaching the preset temperature, and then putting the plate into water for quenching.
S5, carrying out long-time recovery annealing on the AM60 magnesium alloy plate subjected to annealing recrystallization, heating the heating furnace to 180 ℃, heating at the rate of 10-15 ℃/min, keeping the temperature of the AM60 magnesium alloy plate wrapped by the tin foil paper for 300min after reaching the preset temperature, and then putting the plate into water for quenching.
EBSD characterization analysis is carried out on the prepared AM60 magnesium alloy plate, wherein the prepared AM60 magnesium alloy plate has coarse grains of 80-100 mu m and fine grains of 1-10 mu m, has mixed crystal texture characteristics and special non-basal plane texture with double peaks completely separated, and has an ND deflection angle of about 45 degrees towards RD.
In a third embodiment, a method for preparing a wrought magnesium alloy plate with a mixed crystal structure and a non-basal texture comprises the following steps:
s1, preheating a ZK40 magnesium alloy plate, namely wrapping a commercial hot-rolled ZK40 magnesium alloy plate with the thickness of 3.0mm by using tin foil paper to prevent high-temperature oxidation, heating the plate to 540 ℃ in a heating furnace at the heating rate of 10-15 ℃/min, and keeping the temperature for 15min after heating to a preset temperature. And (3) quickly transferring the preheated ZK40 magnesium alloy plate to a rolling mill for ECAR-CB deformation, wherein the pass reduction is 12%, and the rotating speed of an upper roller and a lower roller is 45 m/min. And then, under the action of rolling friction force, continuously passing the ZK40 magnesium alloy plate through a multi-step die with the same rolling channel height and continuously bent channels for shearing and continuously bending for multiple times to realize composite deformation. Subsequently, the ZK40 magnesium alloy plate is put into water for quenching. The fillet radius R1 of the shearing corner of the multi-step die is 2.5mm, and the fillet radii R1, R2 and R3 of the continuous multi-pass bending corner are all 9 mm.
S2, in order to ensure the flatness of the plate, cutting the ZK40 magnesium alloy plate subjected to one-pass ECAR-CB process at a position 5mm behind the third corner position of continuous multi-pass bending, wrapping the plate by tinfoil paper, reheating the plate to 540 ℃ in a heating furnace at a heating rate of 10-15 ℃/min, and continuing to preserve heat for 6min after heating to a preset temperature. Then the ZK40 magnesium alloy plate is turned over 180 degrees to convert the upper surface and the lower surface, and then hot rolling, shearing, continuous multi-pass bending and quenching are carried out.
S3, cutting the ZK40 magnesium alloy plate subjected to the two-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate by using tinfoil paper, reheating the plate to 540 ℃ in a heating furnace at a heating rate of 10-15 ℃/min, and continuing to preserve heat for 5min after heating to a preset temperature. Then the ZK40 magnesium alloy plate is turned over 180 degrees to convert the upper surface and the lower surface, and then hot rolling, shearing, continuous multi-pass bending and quenching are carried out.
Cutting the ZK40 magnesium alloy plate subjected to the three-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wrapping the plate by using tin foil paper, reheating the plate to 540 ℃ in a heating furnace at the heating rate of 10-15 ℃/min, and continuing to preserve heat for 5min after heating to a preset temperature. Then the ZK40 magnesium alloy plate is turned over 180 degrees to convert the upper surface and the lower surface, and then hot rolling, shearing, continuous multi-pass bending and quenching are carried out.
Cutting the ZK40 magnesium alloy plate subjected to the four-pass ECAR-CB process at a position 5mm behind a third corner position of continuous multi-pass bending, wherein the thickness of the finally prepared plate is 1.5-1.7 mm, and the accumulated reduction of the ZK40 magnesium alloy plate is not less than 40%.
S4, carrying out short-time recrystallization annealing on the ZK40 magnesium alloy plate, heating the heating furnace to 400 ℃, heating at the rate of 10-15 ℃/min, keeping the temperature of the ZK40 magnesium alloy plate wrapped by the tin foil paper for 4min after reaching the preset temperature, and then putting the plate into water for quenching.
S5, carrying out long-time recovery annealing on the ZK40 magnesium alloy plate subjected to annealing recrystallization, heating the heating furnace to 160 ℃, heating at the rate of 10-15 ℃/min, keeping the temperature of the ZK40 magnesium alloy plate wrapped by the tin foil paper for 500min after reaching the preset temperature, and then putting the plate into water for quenching.
EBSD characterization analysis is carried out on the prepared ZK40 magnesium alloy plate, coarse grains with the grain size of 100-140 mu m and fine grains with the grain size of 6-20 mu m exist, the plate has mixed crystal texture characteristics and special non-basal plane texture with double peaks completely separated, and the ND deflection angle to RD is about 50 degrees.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A preparation method of a wrought magnesium alloy plate with a mixed crystal structure and a non-basal texture is characterized by comprising the following steps:
s1, carrying out hot rolling-shearing-continuous bending on the deformed magnesium alloy plate, wherein the rolling pass reduction is 10-15%, and then quenching;
s2, cutting the quenched flat plate, reheating to a rolling temperature, turning the deformed magnesium alloy plate by 180 degrees to convert the upper surface and the lower surface, then carrying out hot rolling-shearing-continuous bending, wherein the rolling pass reduction is 10-15%, and then quenching;
s3, repeating S2 until the accumulated reduction of the deformed magnesium alloy sheet is not less than 40%;
s4, recrystallizing and annealing at the annealing temperature of 300-450 ℃ for 1-8 min, and then quenching;
s5, performing recovery annealing at the annealing temperature of 100-220 ℃ for 60-600 min.
2. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture according to claim 1, wherein the method comprises the following steps: preserving heat for 5-15 min at the temperature of 450-550 ℃ before hot rolling in S1; and (3) preserving the heat of the deformed magnesium alloy plate in the S2 for 2-10 min at the temperature of 450-550 ℃ before hot rolling.
3. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture as claimed in claim 1 or 2, wherein the method comprises the following steps: the deformed magnesium alloy plate is subjected to high-temperature oxidation prevention treatment before heating, recrystallization annealing and recovery annealing before hot rolling.
4. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture as claimed in claim 3, wherein the method comprises the following steps: the high-temperature oxidation prevention treatment is to wrap the deformed magnesium alloy plate by using tin foil paper.
5. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture as claimed in claim 1 or 2, wherein the method comprises the following steps: the fillet radius of the shearing-continuously bending shearing corner in the S1 is 2-4 mm, and the fillet radius of the bending corner is 7-12 mm.
6. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture as claimed in claim 1 or 2, wherein the method comprises the following steps: the rotating speed of the upper and lower rollers for hot rolling is 20-60 m/min.
7. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture as claimed in claim 1 or 2, wherein the method comprises the following steps: and in the step S2, cutting is carried out at a position 4-6 mm after the last corner position of the shearing-continuous bending die.
8. The method for preparing the wrought magnesium alloy plate with the mixed crystal structure and the non-basal texture as claimed in claim 1 or 2, wherein the method comprises the following steps: the thickness of the deformed magnesium alloy plate in the S1 is 1-3 mm.
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| CN115896655A (en) * | 2022-11-15 | 2023-04-04 | 重庆理工大学 | Multi-element blending structure deformation magnesium alloy plate and preparation method thereof |
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| CN112899455A (en) * | 2021-01-18 | 2021-06-04 | 中国兵器工业第五九研究所 | Novel metal sheet modification system and method based on current energy field assistance |
| CN113005317A (en) * | 2021-02-24 | 2021-06-22 | 山东省科学院新材料研究所 | High-thermal-stability magnesium alloy with mixed crystal structure and controllable preparation method and application |
| CN113477711A (en) * | 2021-06-03 | 2021-10-08 | 重庆理工大学 | Preparation method of non-basal plane texture magnesium alloy plate with ultra-fine grain structure |
| CN113477711B (en) * | 2021-06-03 | 2023-08-22 | 重庆理工大学 | Preparation method of non-basal plane texture magnesium alloy plate with superfine crystal structure |
| CN113361179A (en) * | 2021-06-24 | 2021-09-07 | 东北大学 | Method for distributing full load regulations of angle rolling of heavy and medium plate mill |
| CN113361179B (en) * | 2021-06-24 | 2023-10-13 | 东北大学 | Corner rolling full load regulation distribution method for heavy and medium plate mill |
| CN115896655A (en) * | 2022-11-15 | 2023-04-04 | 重庆理工大学 | Multi-element blending structure deformation magnesium alloy plate and preparation method thereof |
| CN115896655B (en) * | 2022-11-15 | 2024-04-26 | 重庆理工大学 | Multi-element blending structure deformed magnesium alloy plate and preparation method thereof |
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| CN111270174B (en) | 2021-06-11 |
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