JP7786550B2 - 低降伏比型極厚鋼板およびその製造方法 - Google Patents

低降伏比型極厚鋼板およびその製造方法

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Publication number
JP7786550B2
JP7786550B2 JP2024507045A JP2024507045A JP7786550B2 JP 7786550 B2 JP7786550 B2 JP 7786550B2 JP 2024507045 A JP2024507045 A JP 2024507045A JP 2024507045 A JP2024507045 A JP 2024507045A JP 7786550 B2 JP7786550 B2 JP 7786550B2
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Japan
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steel plate
content
yield ratio
slab
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JP2024507045A
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Japanese (ja)
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JPWO2024161737A1 (https=
Inventor
祐介 寺澤
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JFE Steel Corp
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JFE Steel Corp
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Classifications

    • 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
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • 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
    • 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
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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
    • C21D2211/002—Bainite
    • 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
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
JP2024507045A 2023-01-30 2023-10-31 低降伏比型極厚鋼板およびその製造方法 Active JP7786550B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2023012315 2023-01-30
JP2023012317 2023-01-30
JP2023012315 2023-01-30
JP2023012317 2023-01-30
PCT/JP2023/039335 WO2024161737A1 (ja) 2023-01-30 2023-10-31 低降伏比型極厚鋼板およびその製造方法

Publications (2)

Publication Number Publication Date
JPWO2024161737A1 JPWO2024161737A1 (https=) 2024-08-08
JP7786550B2 true JP7786550B2 (ja) 2025-12-16

Family

ID=92146084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2024507045A Active JP7786550B2 (ja) 2023-01-30 2023-10-31 低降伏比型極厚鋼板およびその製造方法

Country Status (4)

Country Link
JP (1) JP7786550B2 (https=)
KR (1) KR20250123167A (https=)
CN (1) CN120569501A (https=)
WO (1) WO2024161737A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022729A1 (ja) 2013-08-13 2015-02-19 新日鐵住金株式会社 鋼板
WO2020255993A1 (ja) 2019-06-17 2020-12-24 日本製鉄株式会社 鋼板
WO2021156925A1 (ja) 2020-02-03 2021-08-12 日本製鉄株式会社 厚鋼板
WO2021182618A1 (ja) 2020-03-13 2021-09-16 日本製鉄株式会社 風力発電施設用鋼板およびその製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04180521A (ja) * 1990-11-14 1992-06-26 Kobe Steel Ltd 高降伏強度高靭性厚肉高張力鋼板の製造方法
JP4972451B2 (ja) 2007-04-20 2012-07-11 株式会社神戸製鋼所 溶接熱影響部および母材の低温靭性に優れた低降伏比高張力鋼板並びにその製造方法
JP5031531B2 (ja) 2007-11-20 2012-09-19 新日本製鐵株式会社 母材低温靭性およびｈａｚ低温靭性に優れた低降伏比高張力鋼板とその製造方法
JP5176847B2 (ja) 2008-10-03 2013-04-03 新日鐵住金株式会社 低降伏比低温用鋼、およびその製造方法
JP5326827B2 (ja) 2009-06-03 2013-10-30 新日鐵住金株式会社 低降伏比鋼材およびその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022729A1 (ja) 2013-08-13 2015-02-19 新日鐵住金株式会社 鋼板
WO2020255993A1 (ja) 2019-06-17 2020-12-24 日本製鉄株式会社 鋼板
WO2021156925A1 (ja) 2020-02-03 2021-08-12 日本製鉄株式会社 厚鋼板
WO2021182618A1 (ja) 2020-03-13 2021-09-16 日本製鉄株式会社 風力発電施設用鋼板およびその製造方法

Also Published As

Publication number Publication date
JPWO2024161737A1 (https=) 2024-08-08
WO2024161737A1 (ja) 2024-08-08
KR20250123167A (ko) 2025-08-14
CN120569501A (zh) 2025-08-29

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