CN115404416A - Antioxidant super austenitic stainless steel and processing technology thereof - Google Patents
Antioxidant super austenitic stainless steel and processing technology thereof Download PDFInfo
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- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 29
- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 title abstract description 9
- 238000005516 engineering process Methods 0.000 title description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000000265 homogenisation Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 17
- 239000010935 stainless steel Substances 0.000 abstract description 12
- 238000009792 diffusion process Methods 0.000 abstract description 8
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000005204 segregation Methods 0.000 abstract description 2
- 238000003887 surface segregation Methods 0.000 abstract description 2
- 238000003672 processing method Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000012876 topography Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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Abstract
The invention discloses an antioxidant super austenitic stainless steel and a processing method thereof, and relates to the technical field of stainless steel processing. According to the invention, B, Y composite elements are added into super austenitic stainless steel, B, Y is utilized to cooperatively regulate and control the diffusion rate and segregation behavior of alloy elements Mo and Cr, so that the diffusion and enrichment of Cr to the surface are promoted, the surface segregation of Mo is inhibited at the same time, cr is preferentially reacted with O to generate a compact oxide layer, the diffusion of Mo to the surface is prevented, the problem of oxidation burning loss of Mo in the rolling process is alleviated, and the oxidation resistance of the super austenitic stainless steel is further improved.
Description
Technical Field
The invention belongs to the technical field of stainless steel processing, and particularly relates to antioxidant super austenitic stainless steel and a processing technology thereof.
Background
With the rapid development of high-end equipment manufacturing industries such as energy environmental protection, ocean engineering, petrochemical industry and the like, research and development and localization of key materials for large-scale devices in service in extreme environments are regarded as problems which need to be solved at present.
Because of excellent mechanical properties and corrosion resistance, the super austenitic stainless steel is widely applied to extremely harsh environments such as petrochemical engineering, energy conservation, environmental protection, ocean engineering and the like. Because of high Mo, cr and other alloy content, the super austenitic stainless steel has better mechanical and corrosion resistance than common stainless steel, even can be compared with nickel-based alloy, and has obvious cost advantage, so the super austenitic stainless steel gradually becomes an ideal material for replacing the nickel-based alloy and the titanium-based alloy.
At present, the content of molybdenum element in super austenitic stainless steel is high, so that MoO generated by oxidation of molybdenum element can be generated in the processes of high-temperature homogenization treatment, hot working and heat treatment 3 And volatilize, thereby destroying the integrity and compactness of the oxide layer of the super austenitic stainless steel, further leading the oxide layer to form a large number of cavities and cracks, losing the protection effect and reducing the super austenitic stainless steelOxidation resistance, i.e., corrosion resistance, of austenitic stainless steels.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an antioxidant super austenitic stainless steel and a processing technology thereof, and the invention utilizes B, Y to regulate the diffusion rate and the segregation behavior of the alloy elements Mo and Cr in a synergic manner, promotes the diffusion and the enrichment of Cr to the surface, simultaneously inhibits the surface segregation of Mo, ensures that Cr reacts with O preferentially to generate a compact oxide layer, prevents the diffusion of Mo to the surface, and relieves the problem of the oxidation burning loss of Mo in the rolling process.
The invention is realized by adopting the following technical scheme:
the oxidation-resistant super austenitic stainless steel comprises the following chemical components in percentage by mass:
less than or equal to 0.02 percent of C, less than or equal to 0.6 percent of Si, less than or equal to 1.00 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.005 percent of S, cr:19-21%, ni:17.0 to 19.0%, mo:6.0-6.5%, cu:0.5-, N:0.18-0.25%, B:0.002% -0.006%, Y: 0.003-0.007% of the total weight of the alloy, and the balance of Fe and other inevitable impurity elements.
Preferably, the oxidation-resistant super austenitic stainless steel comprises the following chemical components in percentage by mass:
0.02% of C, 0.65% of Si, 1.50% of Mn, 0.03% of P, 0.01% of S, 18.0% of Ni, 1.5% of Cu, 0.3% of N, 20.0% of Cr, 6.5% of Mo, 0.005% of B and 0.005% of Y, with the balance being Fe and other unavoidable impurity elements.
The invention also provides a processing technology of the antioxidant super austenitic stainless steel, which specifically comprises the following steps:
(1) Weighing the following chemical components in percentage by mass: less than or equal to 0.02 percent of C, less than or equal to 0.6 percent of Si, less than or equal to 1.00 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.005 percent of S, and the weight ratio of Cr:19-21%, ni:17.0 to 19.0%, mo:6.0-6.5%, cu:0.5-, N:0.18-0.25%, B:0.002% -0.006%, Y: 0.003-0.007% of the total weight of the alloy, and the balance of Fe and other inevitable impurity elements;
(2) Mixing the weighed chemical components, placing the mixture in a vacuum induction furnace for smelting, casting the mixture into an ingot in a vacuum state, then air-cooling, and demoulding when the mixture is cooled to room temperature; then placing the cast ingot in a resistance heating furnace at 1200 ℃ for homogenization treatment for 8-16h, air-cooling to room temperature, continuing to place the cast ingot in the resistance heating furnace, heating to 1220 ℃, preserving heat for 60min, and finally hot-rolling to form a steel plate;
(3) Solution treatment: putting the steel plate prepared in the step (2) into a muffle furnace at 1200 ℃ for solution treatment; after the treatment is finished, slowly cooling to 1100 ℃, and then cooling by water to obtain the antioxidant super austenitic stainless steel.
Preferably, the ingot size in the step (2) is 120X 100X 500 mm.
Preferably, the thickness of the steel plate prepared in the step (2) is 25mm.
Preferably, the solid solution time in the step (3) is 60min.
Compared with the prior art, the invention has the following beneficial effects:
the invention introduces micro-alloying elements B, Y which are easy to segregate to the grain boundary into the stainless steel, and regulates the distribution of Mo and Cr in the grain boundary and the surface; the distribution of Mo and Cr is regulated, the distribution of an alloy element Cr on the surface of stainless steel is regulated, a compact oxide layer is formed, and the burning loss of Mo in the hot working process is inhibited, so that the oxidation resistance of the super austenitic stainless steel is improved.
Drawings
FIG. 1 is a microstructure and surface energy spectrum of the oxidation resistant super austenitic stainless steel prepared in example 1 after oxidation at 1000 ℃ for 1.5 min;
FIG. 2 is a micro-topography and a surface energy spectrum of a super austenitic stainless steel of conventional composition prepared in comparative example 1 after oxidation at 1000 ℃ for 1.5 min;
FIG. 3 is a micro-topography of the oxidation resistant super austenitic stainless steels prepared in example 1 (left) and comparative example 1 (right) after oxidation at 900 ℃ for 30 min;
FIG. 4 is a microscopic topography of the oxidation resistant super austenitic stainless steels prepared in example 1 (left) and comparative example 1 (right) after oxidation at 1000 ℃ for 30 min;
FIG. 5 is a microscopic topography of the oxidation resistant super austenitic stainless steels prepared in example 1 (left) and comparative example 1 (right) after oxidation at 1100 deg.C for 30 min.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
A processing technology of an antioxidant super austenitic stainless steel comprises the following specific steps:
(1) Weighing the following chemical components in percentage by mass: 0.02% of C, 0.65% of Si, 1.50% of Mn, 0.03% of P, 0.01% of S, 18.0% of Ni, 1.5% of Cu, 0.3% of N, 20.0% of Cr, 6.5% of Mo, 0.005% of B and 0.005% of Y, the balance being Fe and other unavoidable impurity elements;
(2) Mixing the weighed chemical components, placing the mixture in a vacuum induction furnace for smelting, casting the mixture into a cast ingot with the thickness of 120 multiplied by 100 multiplied by 500mm in a vacuum state, then air-cooling, and demoulding when the cast ingot is cooled to room temperature; then placing the cast ingot in a resistance heating furnace at 1200 ℃ for homogenization treatment for 8-16h, air-cooling to room temperature, continuing to place the cast ingot in the resistance heating furnace, heating to 1220 ℃, preserving heat for 60min, and finally hot-rolling into a steel plate with the thickness of 25 mm;
(3) Solution treatment: putting the steel plate prepared in the step (2) in a muffle furnace at 1200 ℃ for solution treatment for 60min; after the treatment is finished, slowly cooling to 1100 ℃, and then cooling by water to obtain the antioxidant super austenitic stainless steel.
(4) Oxidation treatment: and (3) carrying out oxidation treatment on the antioxidant super austenitic stainless steel prepared in the step (3) at 1000 ℃ for 1.5min, detecting the surface micro-morphology of the stainless steel by utilizing a scanning electron microscope, and simultaneously detecting the surface energy spectrum of the stainless steel as shown in figure 1.
Comparative example 1
A processing technology of an antioxidant super austenitic stainless steel comprises the following specific steps:
(1) Weighing the following chemical components in percentage by mass: 0.02% of C, 0.65% of Si, 1.50% of Mn, 0.03% of P, 0.01% of S, 18.0% of Ni, 1.5% of Cu, 0.3% of N, 20.0% of Cr, 6.5% of Mo, and the balance of Fe and other inevitable impurity elements;
(2) Mixing the weighed chemical components, placing the mixture in a vacuum induction furnace for smelting, casting the mixture into a cast ingot with the thickness of 120 multiplied by 100 multiplied by 500mm in a vacuum state, then air-cooling, and demoulding when the cast ingot is cooled to room temperature; then placing the cast ingot in a resistance heating furnace at 1200 ℃ for homogenization treatment for 8-16h, air-cooling to room temperature, continuing to place the cast ingot in the resistance heating furnace, heating to 1220 ℃, preserving heat for 60min, and finally hot-rolling into a steel plate with the thickness of 25 mm;
(3) Solution treatment: putting the steel plate prepared in the step (2) into a muffle furnace at 1200 ℃ for solution treatment for 60min; and after the treatment is finished, slowly cooling to 1100 ℃, and then cooling by water to obtain the super austenitic stainless steel.
(4) Oxidation treatment: and (3) oxidizing the super austenitic stainless steel with the traditional components prepared in the step (3) at 1000 ℃ for 1.5min, detecting the micro morphology of the surface of the stainless steel by using a scanning electron microscope, and simultaneously detecting the surface energy spectrum of the stainless steel as shown in figure 2.
As can be seen from FIGS. 1 and 2, the stainless steel prepared in example 1 has a more uniform oxide film on the surface, a more compact structure, and more significant enrichment of Cr in the grain boundary and the surface.
The oxidation-resistant super austenitic stainless steels prepared in example 1 and comparative example 1 were subjected to oxidation treatment at 900, 1000, 1100 ℃ for 30min, respectively, and the micro-topography of the stainless steel was examined, as shown in fig. 3-5.
3-5, after oxidation treatment, B, Y composite element is added in the stainless steel of the invention, which is beneficial to promoting the diffusion of Cr to the surface and inhibiting the diffusion of Mo to the surface, thereby forming Cr with compact surface 2 O 3 And the passivation layer plays a role in protecting Mo from being burnt.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (6)
1. The oxidation-resistant super austenitic stainless steel is characterized by comprising the following chemical components in percentage by mass:
less than or equal to 0.02 percent of C, less than or equal to 0.6 percent of Si, less than or equal to 1.00 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.005 percent of S, and the weight ratio of Cr:19-21%, ni:17.0-19.0%, mo:6.0-6.5%, cu:0.5-, N:0.18-0.25%, B:0.002% -0.006%, Y: 0.003-0.007% of the total weight of the alloy, and the balance of Fe and other inevitable impurity elements.
2. The oxidation resistant super austenitic stainless steel of claim 1, comprising the following chemical composition in mass percent:
0.02% of C, 0.65% of Si, 1.50% of Mn, 0.03% of P, 0.01% of S, 18.0% of Ni, 1.5% of Cu, 0.3% of N, 20.0% of Cr, 6.5% of Mo, 0.005% of B and 0.005% of Y, with the balance being Fe and other unavoidable impurity elements.
3. The process of machining the oxidation resistant super austenitic stainless steel according to claim 1 or 2, comprising the steps of:
(1) Weighing the following chemical components in percentage by mass: less than or equal to 0.02 percent of C, less than or equal to 0.6 percent of Si, less than or equal to 1.00 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.005 percent of S, and the weight ratio of Cr:19-21%, ni:17.0 to 19.0%, mo:6.0-6.5%, cu:0.5-, N:0.18-0.25%, B:0.002% -0.006%, Y: 0.003-0.007% of the total weight of the alloy, and the balance of Fe and other inevitable impurity elements;
(2) Mixing the weighed chemical components, placing the mixture in a vacuum induction furnace for smelting, casting the mixture into an ingot in a vacuum state, then air-cooling, and demoulding when the mixture is cooled to room temperature; then placing the cast ingot in a resistance heating furnace at 1200 ℃ for homogenization treatment for 8-16h, air-cooling to room temperature, continuing to place the cast ingot in the resistance heating furnace, heating to 1220 ℃, preserving heat for 60min, and finally hot-rolling to form a steel plate;
(3) Solution treatment: putting the steel plate prepared in the step (2) into a muffle furnace at 1200 ℃ for solution treatment; after the treatment is finished, slowly cooling to 1100 ℃, and then cooling by water to obtain the antioxidant super austenitic stainless steel.
4. The process of claim 3, wherein the ingot of step (2) has a size of 120X 100X 500 mm.
5. The process of claim 3, wherein the steel plate produced in step (2) has a thickness of 25mm.
6. The process according to claim 3, wherein the solution time in step (3) is 60min.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881830A (en) * | 2021-09-29 | 2022-01-04 | 太原理工大学 | Method for improving intergranular corrosion resistance of super austenitic stainless steel |
| CN113943903A (en) * | 2021-10-18 | 2022-01-18 | 太原理工大学 | Super austenitic stainless steel with low precipitated phase precipitation, preparation method and heat treatment method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881830A (en) * | 2021-09-29 | 2022-01-04 | 太原理工大学 | Method for improving intergranular corrosion resistance of super austenitic stainless steel |
| CN113943903A (en) * | 2021-10-18 | 2022-01-18 | 太原理工大学 | Super austenitic stainless steel with low precipitated phase precipitation, preparation method and heat treatment method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JIAN WANG,ET AL.: "Effect of B addition on the microstructure and corrosion resistance of S31254 super austenitic stainless steels after solid solution treatment", MATERIALS LETTERS, pages 60 - 63 * |
| SHUCAI ZHANG, ET AL.: "Unveiling the mechanism of yttrium significantly improving high-temperature oxidation resistance of super-austenitic stainless steel S32654", JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, pages 103 - 114 * |
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