CN106011684A - High-strength and high-toughness stainless steel material and preparation method thereof - Google Patents
High-strength and high-toughness stainless steel material and preparation method thereof Download PDFInfo
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- CN106011684A CN106011684A CN201610591787.2A CN201610591787A CN106011684A CN 106011684 A CN106011684 A CN 106011684A CN 201610591787 A CN201610591787 A CN 201610591787A CN 106011684 A CN106011684 A CN 106011684A
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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
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention discloses a high-strength and high-toughness stainless steel material and a preparation method thereof. The high-strength and high-toughness stainless steel material is prepared from the following components in percentage by weight: less than or equal to 0.05 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 1.0 percent of Mn, 12.25 percent to 13.25 percent of Cr, 7.5 percent to 8.5 percent of Ni, 2.0 percent to 2.5 percent of Mo, 0.9 percent to 1.35 percent of Al and the balance of Fe; the preparation method of the high-strength and high-toughness stainless steel material comprises the following steps: 1, smelting in a vacuum induction furnace; 2, re-smelting in a controllable atmosphere electric slag furnace; 3, forging; 4, carrying out heat treatment. The high-strength and high-toughness stainless steel material produced by the invention has high strength and also has good cracking toughness and good horizontal mechanical properties: the mechanical properties are as follows at a room temperature (about 25 DEG C): in a room-temperature tensile test, the tensile strength Rm is more than or equal to 1520Mpa, the yield strength RP0.2 is more than or equal to 1410N/mm<2>, the elongation rate A is more than or equal to 10 percent, the section shrinkage rate Z is more than or equal to 45 percent, the longitudinal impact power AKU2 is more than or equal to 95J, the transverse impact power AKU2 is more than or equal to 56J and the content of N is controlled to be less than or equal to 20ppm; the material has good impact toughness.
Description
Technical field
The present invention relates to a kind of stainless steel material and preparation method thereof, be specially a kind of high-strength high-ductility stainless steel material and preparation method thereof, belong to alloy material applied technical field.
Background technology
Rustless steel is the abbreviation of stainless acid resistant steel, the weak corrosive medium such as resistance to air, steam, water or have the steel grade of rustless property and be referred to as rustless steel；And the steel grade that resistance to chemical attack medium (chemical etching such as acid, alkali, salt) corrodes is referred to as acid resisting steel.The corrosion resistance making them due to both differences in chemical composition is different, and common stainless steel the most not resistant to chemical media corrodes, and acid resisting steel the most generally individually has rustless property, and stainless steel alloy plays an important role for development Aeronautics and Astronautics industry.
And the strength of materials that current stainless steel preparation method for material is produced is low, there is no a good fracture toughness, and the horizontal mechanical performance of material and anticorrosion stress-resistant performance low, in use, the tensile strength of material is less than 1520Mpa；Yield strength is again smaller than 1410N/mm2；Percentage elongation is less than 10%；The contraction percentage of area is less than 45%；Impact of collision merit is less than 95J；Side knock merit is less than 56J, and the nitrogen content in material is more than 20ppm, and the service life making material is short.
Summary of the invention
The purpose of the present invention is that provides a kind of high-strength high-ductility stainless steel material and preparation method thereof to solve the problems referred to above, meets the use requirement under complex work environment.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of high-strength high-ductility stainless steel material and preparation method thereof, by weight percentage, including C :≤0.05%, Si :≤1.0%, Mn :≤1.0%, Cr:12.25% ~ 13.25%, Ni:7.5%-8.5%, Mo:2.0% ~ 2.5%, Al:0.9% ~ 1.35%, surplus are Fe；
Its preparation methods steps is as follows:
Step A, by component ratio weigh raw material, it is subsequently placed in vaccum sensitive stove and carries out melting, smelting temperature 1530 ~ 1580 DEG C, the content of each element is regulated in fusion process, make its weight ratio meet design requirement, in the melting later stage, reduce power, after weld pool surface crusts, add Al ingot, after composition is uniform, solution is poured into consutrode；
Step B, the consutrode of gained in step A being carried out remelting refining, remelting becomes ESR ingot；
Step C, the ESR ingot of gained in step B is heated to 1170 ~ 1200 DEG C, is incubated 2 ~ 3 hours, is forged into blank with press；
Step D, by the blank heating of step C gained to 1140 ~ 1160 DEG C, be incubated 1.5 ~ 2 hours, be forged into required section bar air cooling to room temperature by decussation method；
Step E, the section bar of step D gained being carried out heat treatment, its step is as follows:
A () solid solution: gained section bar is heated to 930 ± 5 DEG C, is incubated the regular hour, water-cooled of coming out of the stove to room temperature (25 ± 5 DEG C), loads in the frozen water of 0 DEG C and carry out cold treatment 5 ~ 8 hours after water outlet；
B () timeliness: the section bar after cold treatment is heated to 510 ~ 620 DEG C, held for some time, air cooling of coming out of the stove, to room temperature, prepares material requested.
Preferably, described step B is carried out in controlled atmosphere electroslag furnace.
Preferably, press described in step C is hydraulic coupling quick forging machine.
Preferably, the forging in step D is forged on four tons of Single arm.
Preferably, during solid solution in step E, described temperature retention time is that the effective thickness of section bar is multiplied by 0.7 gained the number of minutes.
Preferably, during timeliness in step E, described temperature retention time is that the effective thickness of section bar is multiplied by 2 and adds 120 gained the number of minutes again.
Preferably, described impurity is: in terms of percentage by weight %, P≤0.01%, S≤0.008%, N≤0.01%, and in preparation process, N content controls at≤20ppm.
The invention has the beneficial effects as follows: the stainless steel material even tissue of this kind of high-strength high-ductility stainless steel material and preparation method thereof preparation, described high-strength high-ductility stainless steel material is produced by the present invention, it has in addition to high intensity, still there is excellent fracture toughness, good horizontal mechanical performance: room temperature (25 DEG C) its mechanical property is: tensile test at room temperature, tensile strength Rm >=1520Mpa；Yield strength RP0.2 >=1410N/mm2；Percentage elongation A >=10%；Contraction percentage of area Z >=45%；Impact of collision merit AKU2 >=95J；Side knock merit AKU2 >=56J, and N content controls, at≤20ppm, to make material have excellent impact flexibility, have good economic benefit and social benefit, be suitable for promoting the use of.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
A kind of high-strength high-ductility stainless steel material and preparation method thereof, by weight percentage, including C :≤0.05%, Si :≤1.0%, Mn :≤1.0%, Cr:12.25% ~ 13.25%, Ni:7.5%-8.5%, Mo:2.0% ~ 2.5%, Al:0.9% ~ 1.35%, surplus are Fe:P≤0.01%, S≤0.008%, N≤0.01%；
Its preparation methods steps is as follows:
Step A, by component ratio weigh raw material, it is subsequently placed in vaccum sensitive stove and carries out melting, smelting temperature 1530 ~ 1580 DEG C, the content of each element is regulated in fusion process, make its weight ratio meet design requirement, in the melting later stage, reduce power, after weld pool surface crusts, add Al ingot, after composition is uniform, solution is poured into consutrode；
Step B, the consutrode of gained in step A being carried out remelting refining, remelting becomes ESR ingot；
Step C, the ESR ingot of gained in step B is heated to 1170 ~ 1200 DEG C, is incubated 2 ~ 3 hours, is forged into blank with press；
Step D, by the blank heating of step C gained to 1140 ~ 1160 DEG C, be incubated 1.5 ~ 2 hours, be forged into required section bar air cooling to room temperature by decussation method；
Step E, the section bar of step D gained being carried out heat treatment, its step is as follows:
A () solid solution: gained section bar is heated to 930 ± 5 DEG C, is incubated the regular hour, water-cooled of coming out of the stove to room temperature (25 ± 5 DEG C), loads in the frozen water of 0 DEG C and carry out cold treatment 5 ~ 8 hours after water outlet；
B () timeliness: the section bar after cold treatment is heated to 510 ~ 620 DEG C, held for some time, air cooling of coming out of the stove, to room temperature, prepares material requested, and in preparation process, N content controls at≤20ppm.
Embodiment one:
Step A, by component ratio weigh raw material, it is subsequently placed in vaccum sensitive stove and carries out melting, smelting temperature 1530 ~ 1580 DEG C, the content of each element is regulated in fusion process, make its weight ratio meet design requirement, in the melting later stage, reduce power, after weld pool surface crusts, add Al ingot, after composition is uniform, solution is poured into consutrode；
Step B, the consutrode of gained in step A being carried out in controlled atmosphere electroslag furnace remelting refining, remelting becomes ESR ingot；
Step C, the ESR ingot of gained in step B is heated to 1170 ~ 1200 DEG C, is incubated 2 hours, is forged into blank by hydraulic coupling quick forging machine；
Step D, by the blank heating of step C gained to 1140 ~ 1160 DEG C, be incubated 1.5 hours, carry out being forged into required section bar air cooling to room temperature on four tons of Single arm by decussation method；
Step E, the section bar of step D gained being carried out heat treatment, its step is as follows:
A () solid solution: gained section bar is heated to 930 ± 5 DEG C, temperature retention time is that the effective thickness of section bar is multiplied by 0.7 gained the number of minutes, water-cooled of coming out of the stove to room temperature (25 ± 5 DEG C), loads in the frozen water of 0 DEG C and carry out cold treatment 5 hours after water outlet；
B () timeliness: the section bar after cold treatment is heated to 510 ~ 620 DEG C, temperature retention time is that the effective thickness of section bar is multiplied by 2 and adds 120 gained the number of minutes again, and air cooling of coming out of the stove, to room temperature, prepares material requested.
Embodiment two:
Step A, by component ratio weigh raw material, it is subsequently placed in vaccum sensitive stove and carries out melting, smelting temperature 1530 ~ 1580 DEG C, the content of each element is regulated in fusion process, make its weight ratio meet design requirement, in the melting later stage, reduce power, after weld pool surface crusts, add Al ingot, after composition is uniform, solution is poured into consutrode；
Step B, the consutrode of gained in step A being carried out in controlled atmosphere electroslag furnace remelting refining, remelting becomes ESR ingot；
Step C, the ESR ingot of gained in step B is heated to 1170 ~ 1200 DEG C, is incubated 3 hours, is forged into blank by hydraulic coupling quick forging machine；
Step D, by the blank heating of step C gained to 1140 ~ 1160 DEG C, be incubated 2 hours, carry out being forged into required section bar air cooling to room temperature on four tons of Single arm by decussation method；
Step E, the section bar of step D gained being carried out heat treatment, its step is as follows:
A () solid solution: gained section bar is heated to 930 ± 5 DEG C, temperature retention time is that the effective thickness of section bar is multiplied by 0.7 gained the number of minutes, water-cooled of coming out of the stove to room temperature (25 ± 5 DEG C), loads in the frozen water of 0 DEG C and carry out cold treatment 8 hours after water outlet；
B () timeliness: the section bar after cold treatment is heated to 510 ~ 620 DEG C, temperature retention time is that the effective thickness of section bar is multiplied by 2 and adds 120 gained the number of minutes again, and air cooling of coming out of the stove, to room temperature, prepares material requested.
Embodiment three:
Step A, by component ratio weigh raw material, it is subsequently placed in vaccum sensitive stove and carries out melting, smelting temperature 1530 ~ 1580 DEG C, the content of each element is regulated in fusion process, make its weight ratio meet design requirement, in the melting later stage, reduce power, after weld pool surface crusts, add Al ingot, after composition is uniform, solution is poured into consutrode；
Step B, the consutrode of gained in step A being carried out in controlled atmosphere electroslag furnace remelting refining, remelting becomes ESR ingot；
Step C, the ESR ingot of gained in step B is heated to 1170 ~ 1200 DEG C, is incubated 2.5 hours, is forged into blank by hydraulic coupling quick forging machine；
Step D, by the blank heating of step C gained to 1140 ~ 1160 DEG C, be incubated 1.8 hours, carry out being forged into required section bar air cooling to room temperature on four tons of Single arm by decussation method；
Step E, the section bar of step D gained being carried out heat treatment, its step is as follows:
A () solid solution: gained section bar is heated to 930 ± 5 DEG C, temperature retention time is that the effective thickness of section bar is multiplied by 0.7 gained the number of minutes, water-cooled of coming out of the stove to room temperature (25 ± 5 DEG C), loads in the frozen water of 0 DEG C and carry out cold treatment 7 hours after water outlet；
B () timeliness: the section bar after cold treatment is heated to 510 ~ 620 DEG C, temperature retention time is that the effective thickness of section bar is multiplied by 2 and adds 120 gained the number of minutes again, and air cooling of coming out of the stove, to room temperature, prepares material requested.
The alloy material prepared according to embodiment one, embodiment two and embodiment three, described high-strength high-ductility stainless steel material is produced by the present invention, it has in addition to high intensity, still there is excellent fracture toughness, good horizontal mechanical performance: room temperature (25 DEG C) its mechanical property is: tensile test at room temperature, tensile strength Rm >=1520Mpa；Yield strength RP0.2 >=1410N/mm2；Percentage elongation A >=10%；Contraction percentage of area Z >=45%；Impact of collision merit AKU2 >=95J；Side knock merit AKU2 >=56J, and N content controls, at≤20ppm, to make material have excellent impact flexibility, it is possible to meet the use requirement of its working environment.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any labelling in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (7)
1. high-strength high-ductility stainless steel material and preparation method thereof, it is characterized in that, by weight percentage, including C :≤0.05%, Si :≤1.0%, Mn :≤1.0%, Cr:12.25% ~ 13.25%, Ni:7.5%-8.5%, Mo:2.0% ~ 2.5%, Al:0.9% ~ 1.35%, surplus are Fe；
Its preparation methods steps is as follows:
Step A, by component ratio weigh raw material, it is subsequently placed in vaccum sensitive stove and carries out melting, smelting temperature 1530 ~ 1580 DEG C, the content of each element is regulated in fusion process, make its weight ratio meet design requirement, in the melting later stage, reduce power, after weld pool surface crusts, add Al ingot, after composition is uniform, solution is poured into consutrode；
Step B, the consutrode of gained in step A being carried out remelting refining, remelting becomes ESR ingot；
Step C, the ESR ingot of gained in step B is heated to 1170 ~ 1200 DEG C, is incubated 2 ~ 3 hours, is forged into blank with press；
Step D, by the blank heating of step C gained to 1140 ~ 1160 DEG C, be incubated 1.5 ~ 2 hours, be forged into required section bar air cooling to room temperature by decussation method；
Step E, the section bar of step D gained being carried out heat treatment, its step is as follows:
A () solid solution: gained section bar is heated to 930 ± 5 DEG C, is incubated the regular hour, water-cooled of coming out of the stove to room temperature, loads in the frozen water of 0 DEG C and carry out cold treatment 5 ~ 8 hours after water outlet；
B () timeliness: the section bar after cold treatment is heated to 510 ~ 620 DEG C, held for some time, air cooling of coming out of the stove, to room temperature, prepares material requested.
A kind of high-strength high-ductility stainless steel material the most according to claim 1 and preparation method thereof, it is characterised in that: described step B is carried out in controlled atmosphere electroslag furnace.
A kind of high-strength high-ductility stainless steel material the most according to claim 1 and preparation method thereof, it is characterised in that: press described in step C is hydraulic coupling quick forging machine.
A kind of high-strength high-ductility stainless steel material the most according to claim 1 and preparation method thereof, it is characterised in that: the forging in step D is forged on four tons of Single arm.
A kind of high-strength high-ductility stainless steel material the most according to claim 1 and preparation method thereof, it is characterised in that: during solid solution in step E, described temperature retention time is that the effective thickness of section bar is multiplied by 0.7 gained the number of minutes.
A kind of high-strength high-ductility stainless steel material the most according to claim 1 and preparation method thereof, it is characterised in that: during timeliness in step E, described temperature retention time is that the effective thickness of section bar is multiplied by 2 and adds 120 gained the number of minutes again.
A kind of high-strength high-ductility stainless steel material the most according to claim 1 and preparation method thereof, it is characterised in that: described impurity is: in terms of percentage by weight %, P≤0.01%, S≤0.008%, N≤0.01%, and in preparation process, N content controls at≤20ppm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165870A (en) * | 2018-01-19 | 2018-06-15 | 天津荣程联合钢铁集团有限公司 | A kind of steel forgings and its processing method |
| CN108300936A (en) * | 2018-01-19 | 2018-07-20 | 天津荣程联合钢铁集团有限公司 | A kind of pressure-resistant corrosion-resisting steel forgings and its processing method |
| CN109666782A (en) * | 2019-01-04 | 2019-04-23 | 四川六合锻造股份有限公司 | A method of improving 0Cr13Ni4Mo steel low-temperature impact toughness |
| CN110629116A (en) * | 2019-10-22 | 2019-12-31 | 成都先进金属材料产业技术研究院有限公司 | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel |
| CN113774269A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Ultrahigh-strength stainless steel bar for structural member and preparation method thereof |
| CN115478212A (en) * | 2021-05-31 | 2022-12-16 | 宝武特种冶金有限公司 | Carbide and intermetallic compound composite reinforced ultrahigh-strength steel and bar preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138880A (en) * | 1994-09-30 | 1996-12-25 | 新日本制铁株式会社 | Highly corrosion-resistant martensitic stainless steel with excellent weldability and process for producing the same |
| CN103215521A (en) * | 2012-01-19 | 2013-07-24 | 株式会社日立制作所 | Precipitation hardening martensitic stainless steel, and steam turbine long blade, steam turbine, and power plant using the same |
| CN103374687A (en) * | 2012-04-27 | 2013-10-30 | 大同特殊钢株式会社 | Steel for steam turbine blade with excellent strength and toughness |
| CN103774048A (en) * | 2012-10-17 | 2014-05-07 | 株式会社日立制作所 | Precipitation hardening martensitic stainless steel and long blade for steam turbine using the same |
-
2016
- 2016-07-26 CN CN201610591787.2A patent/CN106011684A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138880A (en) * | 1994-09-30 | 1996-12-25 | 新日本制铁株式会社 | Highly corrosion-resistant martensitic stainless steel with excellent weldability and process for producing the same |
| CN103215521A (en) * | 2012-01-19 | 2013-07-24 | 株式会社日立制作所 | Precipitation hardening martensitic stainless steel, and steam turbine long blade, steam turbine, and power plant using the same |
| CN103374687A (en) * | 2012-04-27 | 2013-10-30 | 大同特殊钢株式会社 | Steel for steam turbine blade with excellent strength and toughness |
| CN103774048A (en) * | 2012-10-17 | 2014-05-07 | 株式会社日立制作所 | Precipitation hardening martensitic stainless steel and long blade for steam turbine using the same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165870A (en) * | 2018-01-19 | 2018-06-15 | 天津荣程联合钢铁集团有限公司 | A kind of steel forgings and its processing method |
| CN108300936A (en) * | 2018-01-19 | 2018-07-20 | 天津荣程联合钢铁集团有限公司 | A kind of pressure-resistant corrosion-resisting steel forgings and its processing method |
| CN109666782A (en) * | 2019-01-04 | 2019-04-23 | 四川六合锻造股份有限公司 | A method of improving 0Cr13Ni4Mo steel low-temperature impact toughness |
| CN110629116A (en) * | 2019-10-22 | 2019-12-31 | 成都先进金属材料产业技术研究院有限公司 | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel |
| CN110629116B (en) * | 2019-10-22 | 2021-09-21 | 成都先进金属材料产业技术研究院有限公司 | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel |
| CN113774269A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Ultrahigh-strength stainless steel bar for structural member and preparation method thereof |
| CN115478212A (en) * | 2021-05-31 | 2022-12-16 | 宝武特种冶金有限公司 | Carbide and intermetallic compound composite reinforced ultrahigh-strength steel and bar preparation method thereof |
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