EP3239340A4 - Super duplex stainless steel having excellent yield strength and impact toughness and manufacturing method therefor - Google Patents

Super duplex stainless steel having excellent yield strength and impact toughness and manufacturing method therefor Download PDF

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Publication number
EP3239340A4
EP3239340A4 EP15873621.5A EP15873621A EP3239340A4 EP 3239340 A4 EP3239340 A4 EP 3239340A4 EP 15873621 A EP15873621 A EP 15873621A EP 3239340 A4 EP3239340 A4 EP 3239340A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
stainless steel
yield strength
method therefor
duplex stainless
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.)
Withdrawn
Application number
EP15873621.5A
Other languages
German (de)
French (fr)
Other versions
EP3239340A1 (en
Inventor
Jong Jin Jeon
Dong Ik Shin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3239340A1 publication Critical patent/EP3239340A1/en
Publication of EP3239340A4 publication Critical patent/EP3239340A4/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D2211/005—Ferrite
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0426—Hot rolling

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)
EP15873621.5A 2014-12-26 2015-12-22 Super duplex stainless steel having excellent yield strength and impact toughness and manufacturing method therefor Withdrawn EP3239340A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140191169A KR101668532B1 (en) 2014-12-26 2014-12-26 Super duplex stainless steel with excellent yield strength and imfact toughness, and menufacturing method thereof
PCT/KR2015/014114 WO2016105094A1 (en) 2014-12-26 2015-12-22 Super duplex stainless steel having excellent yield strength and impact toughness and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3239340A1 EP3239340A1 (en) 2017-11-01
EP3239340A4 true EP3239340A4 (en) 2018-07-25

Family

ID=56151033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15873621.5A Withdrawn EP3239340A4 (en) 2014-12-26 2015-12-22 Super duplex stainless steel having excellent yield strength and impact toughness and manufacturing method therefor

Country Status (6)

Country Link
US (1) US20170327923A1 (en)
EP (1) EP3239340A4 (en)
JP (1) JP2018501403A (en)
KR (1) KR101668532B1 (en)
CN (1) CN107109603B (en)
WO (1) WO2016105094A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017204099A1 (en) * 2016-03-15 2017-09-21 Ksb Aktiengesellschaft Method for producing components from a duplex steel and components produced by the method
CN109385507B (en) * 2018-12-20 2020-06-09 四川民盛特钢锻造有限公司 Heat treatment method of ultra-low carbon duplex stainless steel pot body
CN113523166A (en) * 2021-07-21 2021-10-22 苏州雷格姆海洋石油设备科技有限公司 Production process of 25% Cr large-wall-thickness super binocular stainless steel forging for deep sea connector
CN114164373B (en) * 2021-11-10 2022-11-11 中国兵器科学研究院宁波分院 Nb microalloying duplex stainless steel and preparation method thereof
CN114346142B (en) * 2022-01-18 2023-07-14 山西太钢不锈钢股份有限公司 Forging method for improving low-temperature impact toughness of S32750 super duplex stainless steel round steel
CN114657335B (en) * 2022-04-01 2023-06-16 山西太钢不锈钢股份有限公司 Super duplex stainless steel and annealing method thereof
CN115341074B (en) * 2022-09-05 2024-01-09 江苏圣珀新材料科技有限公司 Annealing process of dual-phase steel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101615453B1 (en) * 2014-12-19 2016-04-25 주식회사 포스코 Super duplex stainless steel having superior yield strength and production method thereof

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
JPH0819462B2 (en) * 1989-08-22 1996-02-28 日本治金工業株式会社 Method for producing duplex stainless steel sheet with excellent pitting corrosion resistance
EP0683241B1 (en) * 1994-05-21 2000-08-16 Yong Soo Park Duplex stainless steel with high corrosion resistance
WO1996039543A2 (en) * 1995-06-05 1996-12-12 Pohang Iron & Steel Co., Ltd. Duplex stainless steel, and its manufacturing method
KR100460346B1 (en) * 2002-03-25 2004-12-08 이인성 Super duplex stainless steel with a suppressed formation of intermetallic phases and having an excellent corrosion resistance, embrittlement resistance, castability and hot workability
KR100537135B1 (en) * 2002-12-14 2005-12-16 금호미쓰이화학 주식회사 Manufacturing method of the non -flammable polyurethane foam
JP2006274323A (en) * 2005-03-28 2006-10-12 Kokino Zairyo Kogaku Kenkyusho:Kk Nanocrystal alloy steel powder having high hardness and excellent corrosion resistance and nanocrystal alloy steel bulk material having high strength/toughness and excellent corrosion resistance and production method thereof
CN101765671B (en) * 2007-08-02 2012-01-11 新日铁住金不锈钢株式会社 Ferritic-austenitic stainless steel excellent in corrosion resistance and workability and process for manufacturing the same
FI121340B (en) * 2008-12-19 2010-10-15 Outokumpu Oy Duplex stainless steel
CN101705436A (en) * 2009-04-24 2010-05-12 张家港浦项不锈钢有限公司 Duplex stainless steel
KR20120056458A (en) * 2010-11-25 2012-06-04 주식회사 포스코 Annealing and pickling method of duplex stainless steel and duplex stainless steel manufactured using the same
JP5726537B2 (en) * 2011-01-06 2015-06-03 山陽特殊製鋼株式会社 Duplex stainless steel with excellent toughness
KR101312783B1 (en) 2011-09-28 2013-09-27 주식회사 포스코 Method for the continuous annealing of super duplex stainless steel with excellent impact toughness and coil shape
KR20140083169A (en) * 2012-12-24 2014-07-04 주식회사 포스코 Duplex stainless steel and method for manufacturing the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101615453B1 (en) * 2014-12-19 2016-04-25 주식회사 포스코 Super duplex stainless steel having superior yield strength and production method thereof

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IRENE CALLIARI ET AL: "Phase Transformation in Duplex Stainless Steels after Isothermal Treatments, Continuous Cooling and Cold Working", MATERIALS SCIENCE FORUM, 1 January 2010 (2010-01-01), pages 2986 - 2991, XP055477979, Retrieved from the Internet <URL:https://doi.org/10.4028/www.scientific.net/MSF.638-642.2986?nosfx=y> [retrieved on 20180524], DOI: 10.4028/www.scientific.net/MSF.638-642.2986 *
MARTINS M ET AL: "Heat treatment temperature influence on ASTM A890 GR 6A super duplex stainless steel microstructure", MATERIALS CHARACTERIZATION, ELSEVIER, NEW YORK, NY, US, vol. 55, no. 3, 1 September 2005 (2005-09-01), pages 225 - 233, XP027790515, ISSN: 1044-5803, [retrieved on 20050901] *
NAMURATA SATHIRACHINDA ET AL: "Scanning Kelvin probe force microscopy study of chromium nitrides in 2507 super duplex stainless steelImplications and limitations", ELECTROCHIMICA ACTA, ELSEVIER SCIENCE PUBLISHERS, BARKING, GB, vol. 56, no. 4, 8 August 2010 (2010-08-08), pages 1792 - 1798, XP028141133, ISSN: 0013-4686, [retrieved on 20100817], DOI: 10.1016/J.ELECTACTA.2010.08.038 *
See also references of WO2016105094A1 *

Also Published As

Publication number Publication date
US20170327923A1 (en) 2017-11-16
JP2018501403A (en) 2018-01-18
KR20160080316A (en) 2016-07-08
EP3239340A1 (en) 2017-11-01
CN107109603A (en) 2017-08-29
CN107109603B (en) 2019-05-07
KR101668532B1 (en) 2016-10-24
WO2016105094A1 (en) 2016-06-30

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