Preparation and high-strength plasticity control method of nickel-based wrought superalloy strip foil

Abstract

The invention belongs to the technical field of high-temperature alloy strip foil preparation, and particularly relates to a nickel-based wrought high-temperature alloy strip foil preparation method and a high-strength plasticity control method thereof. The method is designed according to the rolling process deformation amount and the annealing process of the GH3536 alloy strip foil, so that the rolling process deformation amount is controlled reasonably, the internal organization structure is more uniform, intermediate high-temperature rapid annealing is achieved, coarse internal grains are inhibited, and the grain size and uniformity of the internal organization are adjusted; in the final cold rolling state annealing process step, based on the performance use requirements, vacuum annealing and online continuous annealing processes are designed, and the grain sizes in the foil direction of the GH3536 alloy strips with different thicknesses are controlled through recrystallization annealing, so that the ratio of the thickness to the average grain size is larger than 7. The high-strength and high-plasticity GH3536 alloy strip foil is good in surface quality, the room-temperature mechanical properties can meet the requirements that the yield strength (Rp0.2) is not lower than 310 MPa, the tensile strength (Rm) is not lower than 760 MPa, the room-temperature ductility (A) is not lower than 15%, the performance is uniform and stable, and the requirement for high quality is met.

Description

Technical Field

[0001] The invention belongs to the technical field of high-temperature alloy strip foil preparation, and specifically relates to a nickel-based deformed high-temperature alloy strip foil preparation and a high-strength plasticity control method thereof. Background Art

[0002] GH3536 is a nickel-based deformable high-temperature alloy with a high content of Fe, which is mainly strengthened by solid solution of Cr and Mo. It has good oxidation resistance and corrosion resistance, medium endurance and creep strength below 900℃, good cold and hot processing formability and welding performance. Its strip foil can be used to prepare complex thin-walled structural parts such as aircraft engine combustion liners, turbine exhaust components, and aircraft cabin heaters. The thickness is usually only 0.05 to 0.20 mm, playing a decisive role in structural reduction, improvement and enhancement of engine performance. Higher requirements are placed on the surface roughness, thickness accuracy and mechanical properties of this micron-scale material with important application background in aviation, aerospace and other fields.

[0003] The United States is in a leading position in the field of high-end metal strips and foils. Parts made from domestic strips and foils generally have problems such as stamping cracking, large deformation, and poor welding quality. Not only is the pass rate low, but the reliability is even more difficult to guarantee, and they still need to rely on imported products. At present, there is a lack of rolling technology for GH3536 strips and foils with uniform organization, stable performance, excellent surface quality, thickness of 0.05-0.20mm, and width of more than 400mm.

[0004] At the same time, too high strength is not conducive to the processing and forming of strip foil, so its processing and forming properties must be considered, and a good match between strength and plasticity must be achieved. The cold-rolled GH3536 has high strength (yield strength can reach more than 1500MPa) but poor plasticity (elongation generally does not exceed 5%). It must be subjected to subsequent annealing treatment to obtain stable strong and plastic properties in order to meet the subsequent use requirements of precision stamping of workpieces. However, it should be pointed out that, unlike bulk metals, the mechanical properties of micron-scale strip foils have obvious size effects. Their strength and plasticity are not only affected by grain size, but also related to thickness. This places extremely high demands on the performance control technology of micron-scale strip foils.

[0005] Therefore, developing a GH3536 strip foil with a width of more than 400 mm and a thickness of 0.05 to 0.20 mm, excellent dimensional accuracy and surface quality, and stable annealing strong plasticity mechanical properties has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0006] In view of the technical problems existing in the preparation of existing high-temperature alloy strips and foils and the control of stable soft state properties, the purpose of the present invention is to provide a method for preparing a nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity. The GH3536 alloy cold-rolled strip and foil prepared by the present invention has uniform structure and excellent surface quality, and can be mass-produced, thus solving the problem that the soft state properties of the GH3536 alloy strip and foil are difficult to stably control due to the size effect.

[0007] The technical solution of the present invention is:

[0008] A method for preparing a nickel-based deformed high-temperature alloy strip foil and controlling its high-strength plasticity is provided, wherein GH3536 alloy strip foils with thicknesses of 0.05 mm, 0.1 mm, and 0.2 mm are produced and prepared, and soft state performance is regulated, comprising the following steps:

[0009] (1) The raw steel coil is rolled in two rolling passes on a twenty-high precision rolling mill, with the deformation between rolling passes being 40% to 50%, and the thickness of the rolled strip foil being controlled to be 0.2±0.03 mm;

[0010] (2) The raw steel coil is rolled on a 20-high precision rolling mill in three rolling passes, with the deformation of the first two rolling passes being 40% to 50% and the deformation of the last rolling pass being 45% to 55%, and the thickness of the rolled strip being controlled to be 0.1±0.03 mm;

[0011] (3) The raw steel coil is rolled on a twenty-high precision rolling mill in four rolling passes, with the deformation of the first two rolling passes being 40% to 50%, and the deformation of the last two rolling passes being 45% to 55%, and the thickness of the rolled strip is controlled to be 0.05±0.005 mm;

[0012] Three GH3536 alloy strips and foils with different thicknesses are rolled through different rolling processes to achieve deformation energy storage that is beneficial to the nucleation of recrystallization in the later stage.

[0013] The method for preparing the nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity is as follows: if there is an intermediate rolling process, after each intermediate rolling process is completed, high-temperature intermediate flexible bright annealing is immediately performed between adjacent rolling processes. The annealing equipment uses a continuous ammonia decomposition heat treatment furnace or a hydrogen protection continuous heat treatment furnace. The annealing temperature between rolling processes of different thicknesses is controlled as follows:

[0014] 0.2mm strip: annealing temperature between rolling processes is 1130~1150℃, and the tape speed is 10~20m / min; 0.1mm strip: annealing temperature between rolling processes is 1130~1150℃, and the tape speed is 10~20m / min; 0.05mm foil: annealing temperature after rolling in the first two rolling processes is 1130~1150℃, and the tape speed is 10~20m / min; annealing temperature after rolling in the third rolling process is 1080~1100℃, and the tape speed is 5~20m / min.

[0015] The method for preparing the nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity is described. The rolling deformation of the GH3536 alloy strip and foil is combined with a high-temperature intermediate flexible bright annealing process, so that the rolling deformation is sufficient and the internal structure is uniform. The internal grains are suppressed from coarsening through the high-temperature intermediate flexible bright annealing, and the grain size and uniformity of the internal structure are adjusted.

[0016] The nickel-based deformed high-temperature alloy strip foil preparation and high-strength plasticity control method, the strip foils of different thicknesses in the final cold-rolled state are subjected to recrystallization annealing treatment in one of the following two ways:

[0017] Method 1: In a vacuum heat treatment furnace, the final cold-rolled strip is subjected to surface degreasing treatment before annealing. The degreasing procedure is: use petroleum ether to clean the strip surface 2 to 3 times, and then use alcohol to clean the surface 1 to 2 times; the cooling method is gas quenching treatment;

[0018] 0.2mm strip: the annealing temperature of the final cold-rolled state is 1100-1130℃, the holding time is 10-30min, the tensile strength is greater than 760MPa, the yield strength is greater than 310MPa, and the elongation is greater than 30%; 0.1mm strip: the annealing temperature of the final cold-rolled state is 1050-1080℃, the holding time is 10-30min, the tensile strength is greater than 760MPa, the yield strength is greater than 310MPa, and the elongation is greater than 15%; 0.05mm foil: the annealing temperature of the final cold-rolled state is 1050-1060℃, the holding time is 10-20min, the tensile strength is greater than 760MPa, the yield strength is greater than 310MPa, and the elongation is greater than 20%;

[0019] Method 2: It is carried out in an online continuous ammonia decomposition heat treatment furnace or a hydrogen protection heat treatment furnace, and the cooling method is gas quenching;

[0020] 0.2mm strip: annealing temperature between rolling processes is 1130-1150℃, tape speed is 10-20m / min, tensile strength is greater than 760MPa, yield strength is greater than 310MPa, and elongation is greater than 20%; 0.1mm strip: annealing temperature in the final cold-rolled state is 1080-1100℃, tape speed is 5-20m / min, tensile strength is greater than 760MPa, yield strength is greater than 310MPa, and elongation is greater than 15%; 0.05mm foil: final cold-rolled state is 1070-1080℃, tape speed is 10-20m / min, tensile strength is greater than 760MPa, yield strength is greater than 310MPa, and elongation is greater than 30%.

[0021] The method for preparing the nickel-based deformed high-temperature alloy strip foil and controlling its high-strength plasticity is to make the grains of strip foils of different thicknesses grow evenly under different annealing systems, and control the directional grain size of GH3536 alloy strip foils of different thicknesses. While eliminating work hardening, the ratio of GH3536 strip foil thickness to average grain size is controlled to be greater than 7, effectively reducing the mismatch between strength and plasticity caused by the size effect, and further ensuring the acquisition of strong plasticity.

[0022] The nickel-based deformed high-temperature alloy strip foil preparation and high-strength plasticity control method, the GH3536 alloy strip foil thickness dimensional accuracy reaches 0.2±0.03mm, 0.1±0.03mm, 0.05±0.005mm, the surface is bright, and there are no scratches or spots on the surface defects.

[0023] The nickel-based deformed high-temperature alloy strip and foil preparation and high-strength plasticity control method, the room temperature mechanical properties of the GH3536 alloy strip and foil meet the following requirements: yield strength Rp0.2 is not less than 310MPa, tensile strength Rm is not less than 760MPa; room temperature elongation A is not less than 15%.

[0024] The design concept of the present invention is:

[0025] The present invention utilizes a twenty-roll mill to precisely roll and form to ensure the surface quality of the GH3536 alloy strip foil. In the method for regulating the strength and plasticity of the GH3536 alloy strip foil, based on the size effect of the microstructure evolution and mechanical properties of the micron-scale strip foil, the intermediate pass "deformation-annealing" and the control of the deformation amount and annealing system selection of the final pass are performed to effectively control the recrystallized grain size of the GH3536 alloy strip foil of different thicknesses, thereby achieving the purpose of regulating the strength and plasticity. Firstly, controlling the intermediate deformation and annealing system to prevent cracking and breaking of the strip foil is the prerequisite for ensuring the final performance of the strip foil. Secondly, the accumulated large deformation makes the GH3536 alloy strip foil have a higher deformation energy storage, and the relationship between the deformation amount-thickness-recrystallization annealing process and the mechanical properties of the GH3536 alloy strip foil is established. Based on this relationship, the annealing process under different annealing methods is clarified, the grain size is controlled to grow uniformly, and the thickness / average grain size ratio of GH3536 alloy strip foils of different thicknesses is controlled to be greater than 7, which effectively reduces the strength-plasticity mismatch problem caused by the size effect, and further ensures the stable performance of the GH3536 alloy strip foil.

[0026] The advantages and beneficial effects of the present invention are:

[0027] 1. The dimensional accuracy of three thicknesses of GH3536 alloy strip foil produced by the present invention can reach 0.2±0.03mm, 0.1±0.03mm, and 0.05±0.005mm, with a bright surface and no surface defects such as scratches and spots.

[0028] 2. The present invention designs the rolling deformation and annealing process for each thickness of GH3536 alloy strip foil, so that the rolling deformation is more sufficient, the internal structure is more uniform, and the intermediate high temperature rapid annealing is performed to suppress the coarsening of internal grains and adjust the size and uniformity of the internal structure grains.

[0029] 3. In the final cold-rolled annealing process step, the present invention designs vacuum annealing and online continuous annealing processes based on different plasticity requirements. For 0.2 mm thick GH3536 alloy strip foil, a heat treatment process of high-temperature vacuum annealing and rapid online annealing above the vacuum annealing temperature is designed. For 0.1 mm and 0.05 mm thick GH3536 alloy strip foil, a heat treatment process of low-temperature vacuum annealing and rapid online annealing above the vacuum annealing temperature is designed. The grain size of the GH3536 alloy strip foil of different thicknesses is controlled by the above-mentioned recrystallization annealing, so that the ratio of thickness to average grain size is greater than 7, which has the advantages of easy characterization and strong operability.

[0030] 4. Thus, three thicknesses of high-strength and high-plasticity GH3536 alloy strip foils are realized, with good surface quality, uniform and stable performance, and meeting the high quality requirements. The room temperature mechanical properties of the three thicknesses of GH3536 alloy strip foils of the present invention can all meet the following requirements: yield strength (Rp0.2) is not less than 310MPa, tensile strength (Rm) is not less than 760MPa, and room temperature elongation (A) is not less than 15%. According to the requirements of different plasticity, offline vacuum annealing heat treatment or online atmosphere protection continuous heat treatment process can be selected.

[0031] 5. The GH3536 alloy strip foil prepared by the present invention has excellent quality, can be industrialized, and can meet the use requirements of high-performance aircraft engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a GH3536 alloy strip foil with a bright surface and a thickness of 0.05mm.

[0033] Figure 2 The grain structures of the cross-sections of GH3536 alloy strip foils with different thicknesses are marked with the ratio of thickness to grain size. (a) The thickness of the GH3536 alloy strip foil is 0.2 mm, and the ratio of thickness to grain size is t / d = 7.1; (b) The thickness of the GH3536 alloy strip foil is 0.1 mm, and the ratio of thickness to grain size is t / d = 11.7; (c) The thickness of the GH3536 alloy strip foil is 0.05 mm, and the ratio of thickness to grain size is t / d = 8.6. DETAILED DESCRIPTION

[0034] In the specific implementation process, for GH3536 alloy strip foil, under the general process, the material strength is improved while the material plasticity will be reduced, there is a big contradiction between plasticity and strength, and the performance is unstable. In view of the problem that the current GH3536 alloy strip foil cannot have high strength and high plasticity at the same time, and the performance is unstable, the inventor of the present invention has standardized and improved the process through research, and thus proposed a production method for GH3536 alloy strip foil. The method can achieve uniform internal organizational structure, and on the premise of controlling the ratio of thickness to grain size to be greater than 7, the strength of the material is improved on the basis of ensuring the plasticity of the GH3536 alloy strip foil.

[0035] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods without specific conditions in the following examples are based on conventional methods and conditions.

[0036] Example 1

[0037] GH3536 alloy strip coil with a thickness of 0.6 mm and a matte surface finish was selected as the rolling raw material.

[0038] The design parameters of intermediate rolling process rolling-annealing for three thicknesses: 0.2mm, 0.1mm, 0.05mm strip foil intermediate rolling process rolling-annealing are shown in Table 1, Table 2, and Table 3 respectively:

[0039] Table 1

[0040]

[0041] Table 2

[0042]

[0043] Table 3

[0044]

[0045] Three thickness final rolling annealing systems: The final cold rolling annealing design parameters and thickness accuracy of 0.2mm, 0.1mm, and 0.05mm strip foils are shown in Table 4:

[0046] Table 4

[0047]

[0048] The obtained strip foils were tested, and the actual thickness of the 0.2mm strip foil was measured to be 0.202mm, the actual thickness of the 0.1mm strip foil was measured to be 0.103mm, and the actual thickness of the 0.05mm strip foil was measured to be 0.054mm.

[0049] Metallographic samples were cut along the thickness direction of the foil, and the samples were prepared according to the standard metallographic test method. The average grain size of the cross section of the diaphragm was measured by the standard intercept method.

[0050] The performance index is: the grain size ratio of the three thickness strip foils is as follows: Figure 2 As shown in the figure, the thickness and grain size ratio of 0.2mm thick foil is 7.1, the tensile strength is 827MPa, the yield strength is 392MPa, and the elongation is 34.3%; the thickness and grain size ratio of 0.1mm thick foil is 11.7, the tensile strength is 790MPa, the yield strength is 401MPa, and the elongation is 18%; the thickness and grain size ratio of 0.05mm thick foil is 8.61, the tensile strength is 822MPa, the yield strength is 406MPa, and the elongation is 25.5%. The finished product thickness of 0.05mm GH3536 alloy foil is as follows Figure 1 shown.

[0051] Example 2

[0052] In this embodiment, a method for preparing a nickel-based deformed high-temperature alloy strip foil and controlling its high-strength plasticity is different from that in Example 1 in that the final cold-rolled annealing method and parameters are adjusted accordingly, and the cold-rolled GH3536 strip with the same intermediate rolling process rolling + annealing as in Example 1 is subjected to online annealing treatment, as shown in Table 5.

[0053] Table 5

[0054]

[0055] Metallographic samples were cut along the thickness direction of the foil, and the samples were prepared according to the standard metallographic test method. The average grain size of the cross section of the diaphragm was measured by the standard intercept method.

[0056] The performance indicators are: the thickness and grain size ratio of 0.2mm thick foil is 21.53, tensile strength is 830MPa, yield strength is 540MPa, and elongation is 23.3%; the thickness and grain size ratio of 0.1mm thick foil is 13.1, tensile strength is 802MPa, yield strength is 512MPa, and elongation is 16%; the thickness and grain size ratio of 0.05mm thick foil is 8.65, tensile strength is 885MPa, yield strength is 564MPa, and elongation is 37%.

[0057] Example 3

[0058] In this embodiment, a method for preparing a nickel-based deformed high-temperature alloy strip foil and controlling its high-strength plasticity is different from that in Example 1 in terms of the deformation amount between rolling passes, the annealing temperature between rolling passes, the strip feeding speed, and the final cold-rolled annealing process.

[0059] GH3536 alloy strip coil with a thickness of 0.65 mm and a matte surface finish was selected as the rolling raw material.

[0060] The intermediate rolling process rolling-annealing design parameters of three thicknesses: 0.2mm, 0.1mm, 0.05mm strip foil intermediate rolling process rolling-annealing design parameters are shown in Table 6, Table 7, Table 8 respectively:

[0061] Table 6

[0062]

[0063] Table 7

[0064]

[0065] Table 8

[0066]

[0067] Three thickness final rolling annealing systems: The final cold rolling annealing design parameters and thickness accuracy of 0.2mm, 0.1mm, and 0.05mm strip foils are shown in Table 9:

[0068] Table 9

[0069]

[0070]

[0071] Metallographic samples were cut along the thickness direction of the foil, and the samples were prepared according to the standard metallographic test method. The average grain size of the cross section of the diaphragm was measured by the standard intercept method.

[0072] The performance indicators are: the ratio of thickness to grain size of 0.2mm thick foil is 12, tensile strength is 816MPa, yield strength is 348MPa, and elongation is 34%; the ratio of thickness to grain size of 0.1mm thick foil is 14.5, tensile strength is 822MPa, yield strength is 439MPa, and elongation is 18%; the ratio of thickness to grain size of 0.05mm thick foil is 8.48, tensile strength is 800MPa, yield strength is 391MPa, and elongation is 24%.

[0073] Example 4

[0074] In this embodiment, a method for preparing a nickel-based deformed high-temperature alloy strip foil and controlling its high-strength plasticity is different from that in Embodiment 3 in that the final cold-rolled annealing method and parameters are adjusted accordingly, and the cold-rolled GH3536 strip with the same intermediate rolling process rolling + annealing as in Embodiment 3 is subjected to online annealing treatment, as shown in Table 10.

[0075] Table 10

[0076]

[0077] Metallographic samples were cut along the thickness direction of the foil, and the samples were prepared according to the standard metallographic test method. The average grain size of the cross section of the diaphragm was measured by the standard intercept method.

[0078] The performance indicators are: the thickness and grain size ratio of 0.2mm thick foil is 19.6, tensile strength is 825MPa, yield strength is 500MPa, and elongation is 25%; the thickness and grain size ratio of 0.1mm thick foil is 13.5, tensile strength is 806MPa, yield strength is 530MPa, and elongation is 15.5%; the thickness and grain size ratio of 0.05mm thick foil is 8.9, tensile strength is 906MPa, yield strength is 580MPa, and elongation is 36.5%.

[0079] like Figure 2 As shown in the figure, the grain structure of the cross section of GH3536 alloy foil with different thicknesses is marked with the ratio of thickness to grain size. Figure 2 It can be seen that by reasonably regulating the rolling deformation and annealing between rolling processes, the internal structure is more uniform; in the final cold-rolled annealing process step, the designed vacuum annealing and online continuous annealing process control the directional grain size of GH3536 alloy strip foils of different thicknesses, so that the thickness / average grain size ratio is greater than 7, and GH3536 alloy strip foils that meet the requirements of high strength and high plasticity can be obtained.

Claims

1. A method for preparing a nickel-based deformed high-temperature alloy strip foil and controlling its high-strength plasticity, characterized in that: The production and preparation of GH3536 alloy strip foils with thicknesses of 0.05 mm, 0.1 mm, and 0.2 mm and the regulation of soft state properties include the following steps: (1) The raw steel coil is rolled in two rolling passes on a twenty-high precision rolling mill, with the deformation between rolling passes being 40% to 50%, and the thickness of the rolled strip foil being controlled to be 0.2±0.03 mm; (2) The raw steel coil is rolled on a 20-high precision rolling mill in three rolling passes, with the deformation of the first two rolling passes being 40% to 50% and the deformation of the last rolling pass being 45% to 55%, and the thickness of the rolled strip being controlled to be 0.1±0.03 mm; (3) The raw steel coil is rolled on a twenty-high precision rolling mill in four rolling passes, with the deformation of the first two rolling passes being 40% to 50%, and the deformation of the last two rolling passes being 45% to 55%, and the thickness of the rolled strip is controlled to be 0.05±0.005 mm; Three GH3536 alloy strips and foils with different thicknesses are rolled through different rolling processes to achieve deformation energy storage that is beneficial to the nucleation of recrystallization in the later stage.

2. The method for preparing the nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity according to claim 1, characterized in that: For intermediate rolling processes, after each intermediate rolling process is completed, high-temperature intermediate flexible bright annealing is immediately carried out between adjacent rolling processes. The annealing equipment uses a continuous ammonia decomposition heat treatment furnace or a hydrogen protection continuous heat treatment furnace. The annealing temperature between rolling processes of different thicknesses is controlled as follows: 0.2mm strip: annealing temperature between rolling processes is 1130~1150℃, and the tape speed is 10~20m / min; 0.1mm strip: annealing temperature between rolling processes is 1130~1150℃, and the tape speed is 10~20m / min; 0.05mm foil: annealing temperature after rolling in the first two rolling processes is 1130~1150℃, and the tape speed is 10~20m / min; annealing temperature after rolling in the third rolling process is 1080~1100℃, and the tape speed is 5~20m / min.

3. The method for preparing the nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity according to claim 2, characterized in that: The rolling deformation of GH3536 alloy strip foil is combined with the high-temperature intermediate flexible bright annealing process, so that the rolling deformation is sufficient and the internal structure is uniform. The high-temperature intermediate flexible bright annealing is used to suppress the coarsening of internal grains and adjust the size and uniformity of internal structure grains.

4. The method for preparing a nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity according to claim 2, characterized in that: The final cold rolled strips of different thicknesses are subjected to recrystallization annealing treatment in one of the following two ways: Method 1: In a vacuum heat treatment furnace, the final cold-rolled strip is subjected to surface degreasing treatment before annealing. The degreasing procedure is: use petroleum ether to clean the strip surface 2 to 3 times, and then use alcohol to clean the surface 1 to 2 times; the cooling method is gas quenching treatment; 0.2mm strip: the annealing temperature of the final cold-rolled state is 1100-1130℃, the holding time is 10-30min, the tensile strength is greater than 760MPa, the yield strength is greater than 310MPa, and the elongation is greater than 30%; 0.1mm strip: the annealing temperature of the final cold-rolled state is 1050-1080℃, the holding time is 10-30min, the tensile strength is greater than 760MPa, the yield strength is greater than 310MPa, and the elongation is greater than 15%; 0.05mm foil: the annealing temperature of the final cold-rolled state is 1050-1060℃, the holding time is 10-20min, the tensile strength is greater than 760MPa, the yield strength is greater than 310MPa, and the elongation is greater than 20%; Method 2: It is carried out in an online continuous ammonia decomposition heat treatment furnace or a hydrogen protection heat treatment furnace, and the cooling method is gas quenching; 0.2mm strip: annealing temperature between rolling processes is 1130-1150℃, tape speed is 10-20m / min, tensile strength is greater than 760MPa, yield strength is greater than 310MPa, and elongation is greater than 20%; 0.1mm strip: annealing temperature in the final cold-rolled state is 1080-1100℃, tape speed is 5-20m / min, tensile strength is greater than 760MPa, yield strength is greater than 310MPa, and elongation is greater than 15%; 0.05mm foil: final cold-rolled state is 1070-1080℃, tape speed is 10-20m / min, tensile strength is greater than 760MPa, yield strength is greater than 310MPa, and elongation is greater than 30%.

5. The method for preparing a nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity according to claim 4, characterized in that: Under different annealing systems, the grains of strips and foils of different thicknesses are uniformly grown, and the grain size of the GH3536 alloy strips and foils of different thicknesses is controlled. While eliminating work hardening, the ratio of GH3536 strip foil thickness to average grain size is controlled to be greater than 7, which effectively reduces the mismatch between strength and plasticity caused by the size effect, and further ensures the acquisition of strong plasticity.

6. The method for preparing a nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity according to claim 4, characterized in that: The thickness dimensional accuracy of GH3536 alloy strip foil reaches 0.2±0.03mm, 0.1±0.03mm, 0.05±0.005mm, the surface is bright, and there are no scratches or spots on the surface defects.

7. The method for preparing a nickel-based deformed high-temperature alloy strip and foil and controlling its high-strength plasticity according to claim 4, characterized in that: The room temperature mechanical properties of GH3536 alloy strip and foil meet the following requirements: yield strength Rp0.2 is not less than 310 MPa, tensile strength Rm is not less than 760 MPa; room temperature elongation A is not less than 15%.

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