CN115323245B - Cellular structure Ni-Cr-Fe high-temperature alloy and preparation method thereof - Google Patents
Cellular structure Ni-Cr-Fe high-temperature alloy and preparation method thereof Download PDFInfo
- Publication number
- CN115323245B CN115323245B CN202211058957.2A CN202211058957A CN115323245B CN 115323245 B CN115323245 B CN 115323245B CN 202211058957 A CN202211058957 A CN 202211058957A CN 115323245 B CN115323245 B CN 115323245B
- Authority
- CN
- China
- Prior art keywords
- alloy
- percent
- treatment
- temperature
- deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
Abstract
A cellular structure Ni-Cr-Fe high-temperature alloy and a preparation method thereof, belonging to the field of alloy preparation. The cellular structure Ni-Cr-Fe high-temperature alloy comprises the following raw material components in percentage by mass: 40 to 50 percent of Cr, 3 to 10 percent of Fe, 0.1 to 0.6 percent of Cu, 0.1 to 0.6 percent of Si, 0.1 to 0.5 percent of Al and the balance of Ni. The preparation method comprises the following steps: casting, hot rolling treatment, solid solution treatment, pre-deformation treatment, heat treatment in a strong magnetic field and deformation treatment. According to the method, a third component for promoting the nucleation condition of the discontinuous precipitated phase is added into the Ni-Cr-based high-temperature alloy, and an external strong magnetic field, a heat treatment system and a pre-deformation treatment condition are adopted in the preparation process, so that the nucleation growth condition of the discontinuous precipitated phase is changed while the nucleation energy and the grain boundary diffusion coefficient are changed, a driving force is provided for the nucleation growth of a cell structure, and the cell structure Ni-Cr-Fe high-temperature alloy with high strength, high hardness and high thermal creep resistance is obtained.
Description
Technical Field
The invention relates to a high-temperature Ni-Cr-Fe alloy with a cellular structure and a preparation method thereof, belonging to the technical field of alloy preparation.
Background
The Ni-Cr-based alloy has the advantages of good strength, hardness, high-temperature oxidation resistance, sulfur, vanadium and other gas corrosion resistance and the like, so the Ni-Cr-based alloy is widely applied to the fields of petrochemical industry, environmental protection, ocean, nuclear industry and other extreme environments. In research, the Ni-Cr-based alloy is found to obviously generate discontinuous precipitation behavior, form a cellular structure and obviously change the performance due to the discontinuous precipitation behavior, wherein a small amount of discontinuous precipitation can have adverse effects on the alloy performance.
The Chinese invention patent CN1974816A proposes a high temperature resistant nickel-chromium alloy, which comprises the following components: 21 to 25%, ni:58 to 63%, al:1.0 to 1.7 percent, and the balance of Fe. The preparation process comprises smelting, hot working and cold working. The yield strength is 315MPa, and the tensile strength is 705MPa. Chinese invention patent CN114635059A proposes a Ni-Cr-W alloy with excellent strong plasticity, which comprises the following components: 18 to 20%, co:0.3 to 3.0%, W:12.0 to 14.5 percent of Mo, 1.5 to 3 percent of Al, 0.25 to 0.60 percent of Al, 1.0 to 3.5 percent of Fe, less than or equal to 0.06 percent of La, less than or equal to 0.1 percent of Ti, less than or equal to 0.015 percent of B, 0.05 to 0.15 percent of C, 0.25 to 0.75 percent of Si, 0.3 to 1 percent of Mn and the balance of Ni. The preparation process comprises smelting, forging, remelting, secondary forging, hot rolling, cold rolling and heat treatment. So that the alloy crystal grains are more uniform and the strength and the plasticity of the alloy are improved. Chinese invention patent CN113234963A proposes a high strength nickel-chromium-based superalloy for room temperature and low temperature environments, which comprises the following components: 24.0 to 26.0%, co:4.5 to 6.0%, al:3.0 to 3.5%, ti:3.0 to 3.5 percent, and the balance of Ni. The preparation process comprises the steps of smelting, hot forging, solid solution, cold deformation and low-temperature aging. The tensile plasticity under the room temperature condition is 10 percent, the yield strength is 1700MPa, and the tensile strength is 1750GPa. Chinese invention patent CN110079702A proposes a high strength Ni-Cr alloy, which contains Cr:35 to 45.0%, V:0.1 to 3.0%, co:0.1 to 0.5%, la:0.1 to 0.5 percent, and the balance being Ni. The preparation process comprises the steps of smelting, hot rolling and cold rolling, solution treatment and high-intensity magnetic field aging. Tensile strength 908MPa at 750 ℃. The Ni-Cr-based alloy in the Chinese invention patents does not achieve the effects of cell structure and alloy performance strengthening by recrystallization, so the Ni-Cr-based alloy with the cell structure is provided in the invention patent, and the strong plasticity and the creep property of the alloy are expected to be further improved by combining recrystallization.
Discontinuous Precipitation (DP) is a process in which a supersaturated solid solution is desolventized and decomposed by grain boundary transition to form a stable solute-deficient matrix and a cellular precipitate phase, and generally nuclei at grain boundaries and grows and coarsens as the grain boundaries move. The alloy with the sheet-shaped nano structure is generated by discontinuous precipitation, the structure is similar to a pearlite structure in steel, the hardness strength of the alloy can be improved, the formation of a large number of sheet-shaped nano structures through the discontinuous precipitation after complete transformation is an important method for improving the performance of the material, but the performance index of the cellular structure formed by the discontinuous precipitation after complete transformation cannot be remarkably improved because the cellular structure is not combined with recrystallization strengthening at present, and the cellular structure cannot meet the requirements of application environments on the alloy, so that how to further strengthen the cellular structure through recrystallization to play the role in performance regulation and control is a hotspot problem of research, and the cellular structure can comprehensively improve the performance of the material.
Disclosure of Invention
The invention aims to provide a high-temperature alloy with a cellular structure Ni-Cr-Fe and a preparation method thereof, aiming at the problem that the prior art does not fully utilize the strengthening effect of discontinuous precipitation and is not beneficial to further improving the performance of Ni-Cr-based alloy. The high-temperature Ni-Cr-Fe alloy with the cellular structure is a high-temperature Ni-Cr-Fe alloy with high hardness, high strength, high plasticity and high thermal creep property, a third component for promoting the nucleation condition of a discontinuous precipitation phase is added into the high-temperature Ni-Cr alloy through Fe, si, cu, al and the like in the components, an additional strong magnetic field, a heat treatment system and a pre-deformation treatment condition are adopted in the preparation process, the nucleation growth condition of the discontinuous precipitation phase is changed on the basis of changing the nucleation energy and the grain boundary diffusion coefficient, a driving force is provided for the nucleation growth of the cellular structure, the high-temperature Ni-Cr-Fe alloy with the cellular structure is obtained, and the high-temperature Ni-Cr-Fe alloy with the high strength, high hardness and high thermal creep resistance is obtained.
The invention relates to a cell structure Ni-Cr-Fe high-temperature alloy, which comprises the following raw material components in percentage by mass: 40 to 50 percent of Cr, 3 to 10 percent of Fe, 0.1 to 0.6 percent of Cu, 0.1 to 0.6 percent of Si, 0.1 to 0.5 percent of Al and the balance of Ni.
More preferably, the cellular structure Ni-Cr-Fe high-temperature alloy comprises the following raw material components in percentage by mass: 45 to 48 percent of Cr, 5 to 9 percent of Fe, 0.2 to 0.3 percent of Cu, 0.1 to 0.3 percent of Si, 0.1 to 0.3 percent of Al and the balance of Ni.
The cellular structure Ni-Cr-Fe high-temperature alloy has the hardness of 370-440 HV, the tensile strength of 880-985 MPa, the elongation of 16-27 percent and the creep-resistant bending life of more than 5400 h.
The cellular structure Ni-Cr-Fe high-temperature alloy has the cellular structure volume percentage of more than 90 percent.
The invention relates to a preparation method of a cell structure Ni-Cr-Fe high-temperature alloy, which comprises the following steps:
s1: casting
Preparing raw materials according to the raw material components of the Ni-Cr-Fe high-temperature alloy with the cellular structure, smelting, and casting under the protection of inert atmosphere to obtain a Ni-Cr-Fe alloy ingot;
s2: hot rolling treatment
Carrying out hot rolling treatment on the Ni-Cr-Fe alloy cast ingot at the temperature of 1000-1300 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and the total rolling reduction rate is 40-60%, so as to obtain the hot-rolled Ni-Cr-Fe alloy;
s3: solution treatment
Carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy at the temperature of 1000-1300 ℃ for 5-10 min, and then quenching to obtain a quenched Ni-Cr-Fe alloy;
s4: pre-deformation treatment
Carrying out one-way cold rolling on the quenched Ni-Cr-Fe alloy, wherein the single reduction is 5-10%, and the deformation is 20-30% in a cold rolling way, so as to obtain a pre-deformed Ni-Cr-Fe alloy;
s5: heat treatment in high magnetic field
Placing the pre-deformed Ni-Cr-Fe alloy in a 1-45T strong magnetic field, and preserving heat for 0.5-12 hours at the temperature of 600-850 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field;
s6: deformation treatment
Further deforming the Ni-Cr-Fe alloy after heat treatment in a strong magnetic field until the deformation reaches 50-70 percent to obtain the high-temperature Ni-Cr-Fe alloy with a cellular structure.
In the step S1, casting is preferably performed in a copper mold.
In S1, the inert atmosphere is preferably a nitrogen atmosphere or an argon atmosphere, and the pressure is 0.1 to 1 atm, and more preferably 0.25 to 0.75 atm.
In the step S1, preferably, the equipment used for smelting is a high vacuum arc smelting furnace, a vacuum induction furnace or a vacuum consumable smelting furnace; when a high vacuum arc melting furnace is adopted, the casting mode is suction casting, and when a vacuum induction furnace or a vacuum consumable melting furnace is adopted, the casting mode is casting.
In S2, the hot rolling condition is preferably 1150 to 1200 ℃.
In S3, the quenching process comprises the following steps: the quenching temperature is 850-900 ℃, the heat preservation time is 2-3 h, and the cooling mode is air cooling.
In the step S5, the heat treatment temperature in a strong magnetic field is preferably 650 to 850 ℃, more preferably 700 to 800 ℃, and most preferably 725 to 775 ℃.
In the technical scheme, furthermore, the cellular structure Ni-Cr-Fe high-temperature alloy is subjected to suction casting by adopting a high-vacuum arc furnace under the protection of 0.25-0.75 standard atmospheric pressure argon or nitrogen; or casting the alloy in a copper mold or other metal molds by adopting a vacuum induction melting furnace under the protection of argon or nitrogen at the standard atmospheric pressure of 0.25-0.75.
Further, the master alloy in the cellular structure Ni-Cr-Fe high-temperature alloy is prepared by the following method: according to the mass percentage of the raw material components of the Ni-Cr-Fe high-temperature alloy with the target cell structure, electrolytic Ni sheets, cr sheets, fe blocks, cu blocks, si blocks and Al blocks with the purity of more than or equal to 99.9wt% are adopted, and all metal raw materials are subjected to suction casting after high-vacuum arc melting or casting in a melting metal mold in a vacuum induction furnace or a similar smelting mode to prepare Ni-Cr-Fe alloy cast ingots.
In another aspect, the invention provides a high-temperature Ni-Cr-Fe alloy with a cellular structure, which is prepared by the method.
The invention relates to a high-temperature Ni-Cr-Fe alloy with a cellular structure and a preparation method thereof, which have the following beneficial effects:
(1) The discontinuous precipitation effect is strengthened by adding cheap metals such as Fe, cu, al and the like and combining with a process, a refined cellular structure is generated, the strengthening effect similar to that of pearlite in steel is achieved, the cost is reduced, the mechanical property is improved, and particularly the strength and the creep property are optimized and improved.
(2) The alloy deformation work is stored in the alloy through pre-deformation cold processing, a recrystallization structure is obtained after aging, and the alloy strong plasticity is improved.
(3) The strong magnetic field is utilized to influence nucleation, growth, dynamics, grain boundary diffusion coefficient, interface energy and the like of a precipitated phase, the tissue structure characteristics and the performance of the material are changed, and the completely discontinuous precipitated alloy is easier to form.
(4) The alloy prepared by the process has improved strength and plasticity, and compared with the Ni-Cr-based alloy prepared by the prior art, the strength is improved by 10-20%, and the plasticity is improved by 20-30%.
Drawings
FIG. 1 is a schematic view of a process for preparing Ni-Cr-Fe superalloy with a cell structure.
Detailed Description
The following non-limiting examples will allow those of ordinary skill in the art to more fully understand the present invention without limiting it in any way, and the preferred examples are used without limiting the scope of the present invention.
The test methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.
The high vacuum arc melting furnace adopted in the embodiment of the invention has the model of ZFH-300-70.
The vacuum induction furnace adopted in the embodiment of the invention is TG100A-25.
The vacuum heat treatment furnace adopted in the embodiment of the invention is VHT-II.
In the embodiment of the invention, one or more of a JMTD-12T100 superconducting magnet, a JSD-20T52 superconducting magnet or a 45T high-strength hybrid magnet are adopted to provide a strong magnetic field.
In the embodiment of the invention, a SANS-CMT5105 electronic universal tester is adopted to carry out stress-strain curve test and obtain tensile strength.
In the embodiment of the invention, a TMT-D5 high-temperature creep testing machine is adopted to test the high-temperature creep resistance.
In the embodiment of the invention, the schematic flow chart of the preparation process of the Ni-Cr-Fe high-temperature alloy with the cellular structure is shown in figure 1.
A preferred embodiment of the present invention is:
(1) Fusion casting of master alloy: high-purity metals such as Ni, cr, fe, cu, al, si and the like with the purity of more than or equal to 99.9wt% are adopted, and the metals are smelted by a vacuum induction furnace or a vacuum consumable smelting furnace or similar smelting equipment. Casting the alloy in a copper mould or other casting moulds under the protection of argon gas at the standard atmospheric pressure of 0.1-1 to prepare Ni-Cr-Fe alloy cast ingots.
(2) Hot rolling treatment: and (2) carrying out hot rolling treatment on the Ni-Cr-Fe alloy ingot obtained in the step (1) at 1200 ℃ to obtain a hot-rolled Ni-Cr-Fe alloy.
(3) Solution treatment: then carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy obtained in the step (2) at 1200 ℃ for 5-10 min, then preserving heat at 900 ℃ for 3h, and carrying out air cooling to realize quenching to obtain a quenched Ni-Cr-Fe alloy;
(4) Pre-deformation treatment: and (4) carrying out unidirectional cold rolling on the Ni-Cr-Fe alloy quenched in the step (3), wherein the single reduction is 5-10%, and the deformation is 25% through cold rolling, so as to obtain the pre-deformed Ni-Cr-Fe alloy.
(5) Heat treatment under a strong magnetic field: and (4) placing the pre-deformed Ni-Cr-Fe alloy obtained in the step (4) in a 25T strong magnetic field, and preserving the heat for 2-6 hours at the temperature of 650-750 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field.
(6) Deformation treatment: further deforming the Ni-Cr-Fe alloy after heat treatment in a strong magnetic field until the deformation reaches 70 percent to obtain the Ni-Cr-Fe high-temperature alloy with the cellular structure.
Example 1
(1) Casting a master alloy: high-purity metals of Ni, cr, fe, cu, al and Si with the purity of more than or equal to 99.9wt% are adopted, and the metals are smelted by a vacuum induction furnace. Casting in a copper mold under the protection of 0.1 standard atmospheric pressure argon to prepare Ni-40% Cr-4% Fe-0.5% Cu-0.5% Al-0.2% Si alloy ingot, i.e., ni-Cr-Fe alloy ingot.
(2) Hot rolling treatment: and (2) carrying out hot rolling treatment on the Ni-Cr-Fe alloy ingot obtained in the step (1) at 1150 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and thus obtaining the hot-rolled Ni-Cr-Fe alloy.
(3) Solution treatment: and (3) carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy obtained in the step (2) at 1200 ℃ for 5-10 min, then carrying out heat preservation at 900 ℃ for 3h, and carrying out air cooling to realize quenching, thus obtaining the quenched Ni-Cr-Fe alloy.
(4) Pre-deformation treatment: and (4) carrying out unidirectional cold rolling on the Ni-Cr-Fe alloy quenched in the step (3), wherein the single pressing amount is 5-10%, and the cold rolling is carried out to 20% of deformation amount, so as to obtain the pre-deformed Ni-Cr-Fe alloy.
(5) Heat treatment under a strong magnetic field: and (3) placing the Ni-Cr-Fe alloy subjected to the pre-deformation in the step (4) in a 25T strong magnetic field, and preserving the heat for 2 hours at the temperature of 600 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field.
(6) Deformation treatment: further deforming the sample subjected to heat treatment in the strong magnetic field until the deformation amount reaches 70%; obtaining the Ni-Cr-Fe high-temperature alloy with the cellular structure.
The Ni-40-Cr-4% of the obtained Ni-40-Fe-0.5-Cu-0.5% by weight of Al-0.2% by weight of the Si cell structure Ni-Cr-Fe superalloy, had a tensile strength of 880MPa, a plasticity of 16% and a hardness of 370HV.
Comparative example 1
The alloy was prepared in the same manner as in example 1 except that the composition was changed to Ni-40% Cr and the rest of the treatment was the same as in example 1, and the prepared Ni-40% Cr alloy had a tensile strength of 800MPa, a plasticity of 13% and a hardness of 350HV.
It can be seen that the Ni-40-Cr-4-Fe-0.5-Cu-0.5-Al-0.2-Si alloy strength increased by 10% plastic increase by 22% and hardness increased by 6% obtained by the inventive example 1.
Comparative analysis shows that the cellular structure Ni-Cr-Fe high-temperature alloy promotes the precipitation of discontinuous phases and accelerates the transformation of completely discontinuous precipitation due to the addition of elements such as Fe, cu, al and the like. Therefore, the improvement of the strong plastic property of the alloy provided by the invention is realized.
Example 2
(1) Casting a master alloy: high-purity metals of Ni, cr, fe, cu, al and Si with the purity of more than or equal to 99.9wt% are adopted, and a vacuum induction furnace is utilized to smelt the metals. Casting in a copper mold under protection of argon at 0.1 standard atmospheric pressure to prepare Ni-45-Cr-8-Fe-0.5-Cu-0.5-Al-0.2-Si alloy ingot, i.e. Ni-Cr-Fe alloy ingot.
(2) Hot rolling treatment: carrying out hot rolling treatment on the Ni-Cr-Fe alloy ingot obtained in the step (1) at 1200 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and thus obtaining the hot-rolled Ni-Cr-Fe alloy.
(3) Solution treatment: and (3) carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy obtained in the step (2) at 1150 ℃ for 10min, then keeping the temperature at 900 ℃ for 3h, and carrying out air cooling to realize quenching, thus obtaining the quenched Ni-Cr-Fe alloy.
(4) Pre-deformation treatment: and (4) carrying out unidirectional cold rolling on the Ni-Cr-Fe alloy quenched in the step (3), wherein the single pressing amount is 5-10%, and the cold rolling is carried out to 30% of deformation amount, so as to obtain the pre-deformed Ni-Cr-Fe alloy.
(5) Heat treatment under a strong magnetic field: and (5) placing the Ni-Cr-Fe alloy pre-deformed in the step (4) in a 35T strong magnetic field, and preserving heat for 3 hours at the temperature of 700 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field.
(6) Deformation treatment: further deforming the Ni-Cr-Fe alloy subjected to heat treatment in a strong magnetic field until the deformation reaches 60%; obtaining a cellular structure Ni-Cr-Fe high-temperature alloy; the Ni-45-Cr-8-Fe-0.5-Cu-0.5-0.2-The Si cellular structure Ni-Cr-Fe superalloy obtained by the preparation has a tensile strength of 960MPa, a plasticity of 16%, a strength of 410HV.
Comparative example 2
The alloy preparation process was the same as in example 2, except that the steady magnetic field was not applied in the (4) th step, and the remaining processing was the same as in example 2, to prepare obtained Ni-45 Cr-8% Fe-0.5% Cu-0.5% Al-0.2% Si alloy tensile strength of 850MPa, plasticity of 18%, strength of 390HV.
It can be seen that the Ni-45% Cr-8% obtained by the invention example 2, the Al-0.5% by weight of the Al-0.2% was, for example, increased by 13% in the strength of the Si alloy, increased by 22% in the plasticity, and increased by 5% in the strength.
Example 3
(1) Fusion casting of master alloy: high-purity metals of Ni, cr, fe, cu, al and Si with the purity of more than or equal to 99.9wt% are adopted, and a vacuum induction furnace is utilized to smelt the metals. Casting in a copper mold under protection of argon at 0.1 standard atmospheric pressure to prepare Ni-50-Cr-8-Fe-0.3-Cu-0.3-Al-0.2-Si alloy ingot, i.e. Ni-Cr-Fe alloy ingot.
(2) Hot rolling treatment: carrying out hot rolling treatment on the Ni-Cr-Fe alloy ingot obtained in the step (1) at 1250 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and obtaining the hot-rolled Ni-Cr-Fe alloy.
(3) Solution treatment: and (3) carrying out solution treatment on the Ni-Cr-Fe alloy subjected to hot rolling in the step (2) at 1200 ℃ for 10min, then carrying out heat preservation for 3h at 900 ℃, and carrying out air cooling to realize quenching to obtain the quenched Ni-Cr-Fe alloy.
(4) Pre-deformation treatment: and (4) carrying out unidirectional cold rolling on the Ni-Cr-Fe alloy quenched in the step (3), wherein the single pressing amount is 5-10%, and the cold rolling is carried out to 30% of deformation amount, so as to obtain the pre-deformed Ni-Cr-Fe alloy.
(5) Heat treatment under a strong magnetic field: and (3) placing the Ni-Cr-Fe alloy subjected to the pre-deformation in the step (4) in a 25T strong magnetic field, and preserving the heat for 3 hours at the temperature of 800 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field.
(6) Deformation treatment: further deforming the sample subjected to heat treatment in a strong magnetic field until the deformation reaches 70%; obtaining a cellular structure Ni-Cr-Fe high-temperature alloy; the Ni-50-Cr-8-percent of the obtained Ni-0.3-Cu-0.3-The% Al-0.2-The Si cell structure Ni-Cr-Fe superalloy had a tensile strength of 965MPa, a plasticity of 25%, and a strength of 430HV.
Comparative example 3
The alloy preparation procedure was the same as in example 3, except that the preliminary deformation treatment was not used in the step (3), and the rest of the treatment was the same as in example 3, and the prepared Ni-50% Cr-8% Fe-0.3% Cu-0.3% Al-0.2% Si alloy was 870MPa in tensile strength, 19% in plasticity, and 400HV in strength.
As can be seen, the Ni-50% Cr-8% Fe-0.3% by weight of the invention example 3, cu-0.3% Al-0.2% Si alloyed strength by 11%, plasticity by 30%. The strength is improved by 7.5 percent.
Example 4
(1) Casting a master alloy: high-purity metals of Ni, cr, fe, cu, al and Si with the purity of more than or equal to 99.9wt% are adopted, and a vacuum induction furnace is utilized to smelt the metals. Casting in a copper mold under the protection of 0.1 standard atmospheric pressure argon to prepare Ni-45% Cr-8% Fe-0.5% Cu-0.5% Al-0.2% Si alloy ingot, i.e., ni-Cr-Fe alloy ingot.
(2) Hot rolling treatment: and (2) carrying out hot rolling treatment on the Ni-Cr-Fe alloy ingot obtained in the step (1) at 1200 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and thus obtaining the hot-rolled Ni-Cr-Fe alloy.
(3) Solution treatment: and (3) carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy obtained in the step (2) at 1200 ℃ for 5-10 min, then preserving heat at 900 ℃ for 3h, and carrying out air cooling to realize quenching so as to obtain the quenched Ni-Cr-Fe alloy.
(4) Pre-deformation treatment: and (4) carrying out unidirectional cold rolling on the Ni-Cr-Fe alloy quenched in the step (3), wherein the single pressing amount is 5-10%, and the cold rolling is carried out to 20% of deformation amount, so as to obtain the pre-deformed Ni-Cr-Fe alloy.
(5) Heat treatment under a strong magnetic field: and (3) placing the Ni-Cr-Fe alloy subjected to the pre-deformation in the step (4) in a 45T strong magnetic field, and preserving the heat for 6 hours at the temperature of 600 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field.
(6) Deformation treatment: further deforming the Ni-Cr-Fe alloy subjected to heat treatment in a strong magnetic field until the deformation reaches 70%; obtaining the cellular structure Ni-Cr-Fe high-temperature alloy.
The Ni-45-Cr-8-0.5-Cu-0.5% of the obtained Al-0.2% by weight of the Si cell structure Ni-Cr-Fe superalloy had a tensile strength of 975MPa, a plasticity of 26%, a strength of 435HV, and a creep bending life of 5870h.
Example 5
(1) Fusion casting of master alloy: high-purity metals of Ni, cr, fe, cu, al and Si with the purity of more than or equal to 99.9wt% are adopted, and the metals are smelted by a vacuum induction furnace. Casting in a copper mold under protection of argon at 0.1 standard atmospheric pressure to prepare Ni-45-Cr-8-Fe-0.5-Cu-0.5-Al-0.2-Si alloy ingot, i.e. Ni-Cr-Fe alloy ingot.
(2) Hot rolling treatment: and (2) carrying out hot rolling treatment on the Ni-Cr-Fe alloy ingot obtained in the step (1) at 1200 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and thus obtaining the hot-rolled Ni-Cr-Fe alloy.
(3) Solution treatment: and (3) carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy obtained in the step (2) at 1200 ℃ for 5-10 min, then keeping the temperature at 900 ℃ for 3h, and carrying out air cooling to realize quenching to obtain the quenched Ni-Cr-Fe alloy.
(4) Pre-deformation treatment: and (4) carrying out unidirectional cold rolling on the Ni-Cr-Fe alloy quenched in the step (3), wherein the single pressing amount is 5-10%, and the cold rolling is carried out to 20% of deformation amount, so as to obtain the pre-deformed Ni-Cr-Fe alloy.
(5) Heat treatment under a strong magnetic field: and (3) placing the Ni-Cr-Fe alloy subjected to the pre-deformation in the step (4) in a 45T strong magnetic field, and preserving the heat for 12 hours at the temperature of 600 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field.
(6) Deformation treatment: further deforming the Ni-Cr-Fe alloy subjected to heat treatment in a strong magnetic field until the deformation reaches 70%; obtaining the cellular structure Ni-Cr-Fe high-temperature alloy. The Ni-45-Cr-8-0.5-Cu-0.5% obtained by the preparation of high-temperature tensile strength of 985MPa, plasticity of 27%, strength of 440HV, creep bending life of 5900h of Al-0.2Si cell structure Ni-Cr-Fe.
Claims (9)
1. The cellular structure Ni-Cr-Fe high-temperature alloy is characterized by comprising the following raw material components in percentage by mass: 40 to 50 percent of Cr, 3 to 10 percent of Fe, 0.1 to 0.6 percent of Cu, 0.1 to 0.6 percent of Si, 0.1 to 0.5 percent of Al and the balance of Ni;
the cellular structure Ni-Cr-Fe high-temperature alloy is prepared by the following preparation steps:
s1: casting of metals
Preparing raw materials according to the raw material components of the cellular structure Ni-Cr-Fe high-temperature alloy, smelting, and casting under the protection of inert atmosphere to obtain a Ni-Cr-Fe alloy cast ingot;
s2: hot rolling treatment
Carrying out hot rolling treatment on the Ni-Cr-Fe alloy cast ingot at the temperature of 1000-1300 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and the total reduction rate is 40-60%, so as to obtain a hot-rolled Ni-Cr-Fe alloy;
s3: solution treatment
Carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy at 1000-1300 ℃ for 5-10min, and then quenching to obtain a quenched Ni-Cr-Fe alloy;
s4: pre-deformation treatment
Carrying out unidirectional cold rolling on the quenched Ni-Cr-Fe alloy, wherein the single reduction is 5-10%, and the cold rolling is carried out to a deformation amount of 20-30%, so as to obtain a pre-deformed Ni-Cr-Fe alloy;
s5: heat treatment in high magnetic field
Placing the pre-deformed Ni-Cr-Fe alloy in a strong magnetic field of 1-45T, and preserving heat for 0.5-12 hours at the temperature of 600-850 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field;
s6: deformation treatment
And (3) further deforming the Ni-Cr-Fe alloy subjected to heat treatment in a strong magnetic field until the deformation reaches 50-70%, thus obtaining the Ni-Cr-Fe high-temperature alloy with the cell structure.
2. The cellular structure Ni-Cr-Fe superalloy as in claim 1, wherein the cellular structure Ni-Cr-Fe superalloy comprises the following raw material components by mass percent: 45 to 48 percent of Cr, 5 to 9 percent of Fe, 0.2 to 0.3 percent of Cu, 0.1 to 0.3 percent of Si, 0.1 to 0.3 percent of Al and the balance of Ni.
3. The Ni-Cr-Fe superalloy with a cell structure according to claim 1, wherein the Ni-Cr-Fe superalloy with a cell structure has a hardness of 370 to 440hv, a tensile strength of 880 to 985mpa, an elongation of 16 to 27%, and a creep bending resistance life of 5400h or more.
4. The cellular structure Ni-Cr-Fe superalloy as in claim 1, wherein the cellular structure Ni-Cr-Fe superalloy has a cellular structure of 90% by volume or more.
5. A method for the production of a Ni-Cr-Fe superalloy with a cellular structure according to any of claims 1 to 4, comprising the following steps:
s1: casting
Preparing raw materials according to the raw material components of the Ni-Cr-Fe high-temperature alloy with the cellular structure, smelting, and casting under the protection of inert atmosphere to obtain a Ni-Cr-Fe alloy ingot;
s2: hot rolling treatment
Carrying out hot rolling treatment on the Ni-Cr-Fe alloy cast ingot at the temperature of 1000-1300 ℃, wherein the rolling pass of hot rolling deformation is 10-15 passes, and the total reduction rate is 40-60%, so as to obtain a hot-rolled Ni-Cr-Fe alloy;
s3: solution treatment
Carrying out solution treatment on the hot-rolled Ni-Cr-Fe alloy at 1000-1300 ℃ for 5-10min, and then quenching to obtain a quenched Ni-Cr-Fe alloy;
s4: pre-deformation treatment
Carrying out unidirectional cold rolling on the quenched Ni-Cr-Fe alloy, wherein the single reduction is 5-10%, and the deformation is 20-30% in a cold rolling mode, so as to obtain a pre-deformed Ni-Cr-Fe alloy;
s5: heat treatment in high magnetic field
Placing the pre-deformed Ni-Cr-Fe alloy in a strong magnetic field of 1-45T, and preserving heat for 0.5-12 hours at the temperature of 600-850 ℃ to obtain the Ni-Cr-Fe alloy subjected to heat treatment in the strong magnetic field;
s6: deformation treatment
And (3) further deforming the Ni-Cr-Fe alloy subjected to heat treatment in a strong magnetic field, wherein the deformation amount reaches 50 to 70 percent, so as to obtain the high-temperature Ni-Cr-Fe alloy with the cellular structure.
6. The method for preparing the cellular-structure Ni-Cr-Fe superalloy as claimed in claim 5, wherein the smelting is performed by a high vacuum arc melting furnace, a vacuum induction furnace or a vacuum consumable melting furnace; when a high-vacuum arc melting furnace is adopted, the casting mode is suction casting, and when a vacuum induction furnace or a vacuum consumable melting furnace is adopted, the casting mode is casting.
7. The method for preparing the Ni-Cr-Fe superalloy with the cell structure as claimed in claim 5, wherein in S1, the inert atmosphere is a nitrogen atmosphere or an argon atmosphere, and the pressure is 0.1 to 1 standard atmosphere.
8. The method for preparing a cellular structure Ni-Cr-Fe superalloy as claimed in claim 5, wherein the step of quenching in S3 is: the quenching temperature is 850-900 ℃, the heat preservation time is 2-3 h, and the cooling mode is air cooling.
9. The method for preparing the cellular-structure Ni-Cr-Fe superalloy as claimed in claim 5, wherein the cellular-structure Ni-Cr-Fe superalloy is cast by a specific method: according to the mass percentage of the raw material components of the Ni-Cr-Fe high-temperature alloy with the target cell structure, all the metal raw materials are subjected to suction casting after high-vacuum arc melting or casting in a melting metal mold in a vacuum induction furnace to prepare a Ni-Cr-Fe alloy cast ingot by adopting electrolytic Ni sheets, cr sheets, fe blocks, cu blocks, si blocks and Al blocks with the purity of more than or equal to 99.9 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211058957.2A CN115323245B (en) | 2022-08-31 | 2022-08-31 | Cellular structure Ni-Cr-Fe high-temperature alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211058957.2A CN115323245B (en) | 2022-08-31 | 2022-08-31 | Cellular structure Ni-Cr-Fe high-temperature alloy and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115323245A CN115323245A (en) | 2022-11-11 |
| CN115323245B true CN115323245B (en) | 2023-03-07 |
Family
ID=83927450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211058957.2A Active CN115323245B (en) | 2022-08-31 | 2022-08-31 | Cellular structure Ni-Cr-Fe high-temperature alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115323245B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB572861A (en) * | 1942-04-09 | 1945-10-26 | Mond Nickel Co Ltd | Improvements in nickel and cobalt alloys |
| CN104471089A (en) * | 2012-08-10 | 2015-03-25 | Vdm金属有限公司 | Usage of a nickel-chromium-iron-aluminium alloy with good workability |
| CN107075618A (en) * | 2014-09-29 | 2017-08-18 | 新日铁住金株式会社 | Ni base alloy pipes |
-
2022
- 2022-08-31 CN CN202211058957.2A patent/CN115323245B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB572861A (en) * | 1942-04-09 | 1945-10-26 | Mond Nickel Co Ltd | Improvements in nickel and cobalt alloys |
| CN104471089A (en) * | 2012-08-10 | 2015-03-25 | Vdm金属有限公司 | Usage of a nickel-chromium-iron-aluminium alloy with good workability |
| CN107075618A (en) * | 2014-09-29 | 2017-08-18 | 新日铁住金株式会社 | Ni base alloy pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115323245A (en) | 2022-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110551920B (en) | High-performance easy-processing nickel-based wrought superalloy and preparation method thereof | |
| CN108315599B (en) | A kind of high cobalt nickel base superalloy and preparation method thereof | |
| CN111826573B (en) | Precipitation strengthening type high-entropy alloy without sigma phase precipitation tendency and preparation method thereof | |
| JP4431815B2 (en) | Ultra-strength precipitation hardened stainless steel and long strip made from the same steel | |
| CN106167877B (en) | Maraging steel | |
| CN110408850B (en) | Nano intermetallic compound precipitation strengthened super steel and preparation method thereof | |
| CN108842095A (en) | High strength and low cost alpha+beta titanium alloys and preparation method thereof | |
| CN113604706B (en) | Low-density low-expansion high-entropy high-temperature alloy and preparation method thereof | |
| JP2001512787A (en) | High strength notched ductile precipitation hardened stainless steel alloy | |
| US11220733B1 (en) | Low carbon martensitic high temperature strength steel and preparation method thereof | |
| CN110983144A (en) | Nitride reinforced high-entropy alloy and preparation method thereof | |
| CN113430444A (en) | High-plasticity high-strength high-entropy alloy and preparation method thereof | |
| CN111101071B (en) | High-strength weathering steel and production method thereof | |
| CN115449691A (en) | Ultrahigh-strength-plasticity matched high-entropy alloy and preparation method thereof | |
| CN114561517A (en) | Low-density high-ductility steel and preparation method and application thereof | |
| CN104651685A (en) | Aluminum magnesium alloy material and preparation method thereof | |
| CN114032440A (en) | Laves phase strengthened austenitic heat-resistant steel and preparation method thereof | |
| CN110079702B (en) | Ni-Cr-based alloy and preparation method thereof | |
| CN106566953A (en) | Corrosion-resisting alloy forge piece and production method thereof | |
| CN115323245B (en) | Cellular structure Ni-Cr-Fe high-temperature alloy and preparation method thereof | |
| CN111961919A (en) | Nickel-copper alloy bar for ship and processing method thereof | |
| CN112095055A (en) | High-temperature high-strength low-carbon martensite heat-strength steel and preparation method thereof | |
| CN114807772B (en) | Aging-strengthened high-strength high-toughness light steel and manufacturing method thereof | |
| CN110616356A (en) | Er-containing magnesium alloy and preparation method thereof | |
| CN111636036B (en) | High ferromanganese alloy and strengthening and toughening method for regulating metastable phase thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |