EP2589674A4 - Ultrahigh-strength cold-rolled steel sheet with excellent ductility and delayed-fracture resistance, and process for producing same - Google Patents

Ultrahigh-strength cold-rolled steel sheet with excellent ductility and delayed-fracture resistance, and process for producing same Download PDF

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Publication number
EP2589674A4
EP2589674A4 EP11800982.8A EP11800982A EP2589674A4 EP 2589674 A4 EP2589674 A4 EP 2589674A4 EP 11800982 A EP11800982 A EP 11800982A EP 2589674 A4 EP2589674 A4 EP 2589674A4
Authority
EP
European Patent Office
Prior art keywords
ultrahigh
delayed
steel sheet
rolled steel
fracture resistance
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Withdrawn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
EP11800982.8A
Other languages
German (de)
French (fr)
Other versions
EP2589674A1 (en
Inventor
Masataka Yoshino
Kohei Hasegawa
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.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP2589674A1 publication Critical patent/EP2589674A1/en
Publication of EP2589674A4 publication Critical patent/EP2589674A4/en
Withdrawn legal-status Critical Current

Links

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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment 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
    • C21D6/00—Heat treatment 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
    • 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
    • C21D8/0436—Cold 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
    • C21D8/04—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
    • C21D8/0447—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 heat treatment
    • 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
    • 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
    • C22C38/02—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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • 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
    • 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 Sheet Steel (AREA)
EP11800982.8A 2010-06-30 2011-06-24 Ultrahigh-strength cold-rolled steel sheet with excellent ductility and delayed-fracture resistance, and process for producing same Withdrawn EP2589674A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010148531A JP5668337B2 (en) 2010-06-30 2010-06-30 Ultra-high-strength cold-rolled steel sheet excellent in ductility and delayed fracture resistance and method for producing the same
PCT/JP2011/065135 WO2012002520A1 (en) 2010-06-30 2011-06-24 Ultrahigh-strength cold-rolled steel sheet with excellent ductility and delayed-fracture resistance, and process for producing same

Publications (2)

Publication Number Publication Date
EP2589674A1 EP2589674A1 (en) 2013-05-08
EP2589674A4 true EP2589674A4 (en) 2017-06-21

Family

ID=45402222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11800982.8A Withdrawn EP2589674A4 (en) 2010-06-30 2011-06-24 Ultrahigh-strength cold-rolled steel sheet with excellent ductility and delayed-fracture resistance, and process for producing same

Country Status (6)

Country Link
US (1) US20130087257A1 (en)
EP (1) EP2589674A4 (en)
JP (1) JP5668337B2 (en)
KR (1) KR101540507B1 (en)
CN (1) CN102971442A (en)
WO (1) WO2012002520A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3187614A1 (en) * 2012-05-31 2017-07-05 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) High strength cold-rolled steel sheet and manufacturing method therefor
CN103805838B (en) 2012-11-15 2017-02-08 宝山钢铁股份有限公司 High formability super strength cold-roll steel sheet and manufacture method thereof
CN103805840B (en) * 2012-11-15 2016-12-21 宝山钢铁股份有限公司 A kind of high formability galvanizing ultrahigh-strength steel plates and manufacture method thereof
JP5632947B2 (en) * 2012-12-12 2014-11-26 株式会社神戸製鋼所 High-strength steel sheet excellent in workability and low-temperature toughness and method for producing the same
CN103215505B (en) * 2013-04-18 2015-08-26 首钢总公司 Superhigh-strength hot continuous-rolling strip steel and production method thereof
JP6194526B2 (en) * 2013-06-05 2017-09-13 高周波熱錬株式会社 Method and apparatus for heating plate workpiece and hot press molding method
WO2015097891A1 (en) 2013-12-27 2015-07-02 新日鐵住金株式会社 Hot-pressed steel sheet member, production method for same, and hot-press steel sheet
WO2015151427A1 (en) * 2014-03-31 2015-10-08 Ｊｆｅスチール株式会社 High-yield-ratio high-strength cold rolled steel sheet and production method therefor
CN106133173B (en) * 2014-03-31 2018-01-19 杰富意钢铁株式会社 The excellent high strength cold rolled steel plate of property uniform in material and its manufacture method
US10435762B2 (en) * 2014-03-31 2019-10-08 Jfe Steel Corporation High-yield-ratio high-strength cold-rolled steel sheet and method of producing the same
EP3187613B1 (en) 2014-12-12 2019-09-04 JFE Steel Corporation High-strength cold-rolled steel sheet and method for producing same
US20180044751A1 (en) * 2015-02-27 2018-02-15 Jfe Steel Corporation High-strength cold-rolled steel sheet and method for manufacturing the same (as amended)
WO2016147549A1 (en) * 2015-03-18 2016-09-22 Ｊｆｅスチール株式会社 High-strength cold-rolled steel sheet and method for manufacturing same
JP6554397B2 (en) * 2015-03-31 2019-07-31 株式会社神戸製鋼所 High strength cold rolled steel sheet having a tensile strength of 980 MPa or more excellent in workability and impact property, and a method of manufacturing the same
WO2016158160A1 (en) * 2015-03-31 2016-10-06 株式会社神戸製鋼所 HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT WORKABILITY AND COLLISION CHARACTERISTICS AND HAVING TENSILE STRENGTH OF 980 MPa OR MORE, AND METHOD FOR PRODUCING SAME
US10611280B2 (en) * 2015-07-29 2020-04-07 Ts Tech Co., Ltd. Vehicle seat frame
US11384415B2 (en) * 2015-11-16 2022-07-12 Benteler Steel/Tube Gmbh Steel alloy with high energy absorption capacity and tubular steel product
WO2017141952A1 (en) 2016-02-18 2017-08-24 Ｊｆｅスチール株式会社 High-strength cold-rolled steel sheet
US11008635B2 (en) 2016-02-18 2021-05-18 Jfe Steel Corporation High-strength cold-rolled steel sheet
JP6358451B2 (en) * 2017-01-05 2018-07-18 Ｊｆｅスチール株式会社 Steel sheet with excellent delayed fracture resistance
JP6697728B1 (en) * 2018-10-04 2020-05-27 日本製鉄株式会社 Cold rolled steel sheet
JP6773251B1 (en) * 2018-10-31 2020-10-21 Ｊｆｅスチール株式会社 Manufacturing method of high-strength member and high-strength member
CN114207170B (en) * 2019-08-06 2022-09-13 杰富意钢铁株式会社 High-strength thin steel sheet and method for producing same
CN113737087B (en) 2020-05-27 2022-07-19 宝山钢铁股份有限公司 Ultrahigh-strength dual-phase steel and manufacturing method thereof
CN113737108A (en) * 2020-05-27 2021-12-03 宝山钢铁股份有限公司 Delay cracking resistant electro-galvanized super-strong dual-phase steel and manufacturing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11350038A (en) * 1998-06-12 1999-12-21 Nkk Corp Production of dual-phase high tensile strength cold rolled steel plate excellent in ductility and stretch-flanging formability
JP2010090432A (en) * 2008-10-08 2010-04-22 Jfe Steel Corp Super high-strength cold-rolled steel sheet excellent in ductility, and producing method of the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2973767B2 (en) * 1993-03-17 1999-11-08 日本鋼管株式会社 Method for producing ultra-high strength cold rolled steel sheet with good strip shape
JP4362318B2 (en) * 2003-06-02 2009-11-11 新日本製鐵株式会社 High strength steel plate with excellent delayed fracture resistance and method for producing the same
JP4396243B2 (en) 2003-11-28 2010-01-13 Ｊｆｅスチール株式会社 Manufacturing method of high workability ultra-high strength cold-rolled steel sheet with excellent delayed fracture resistance after forming
JP5250938B2 (en) 2005-03-31 2013-07-31 Ｊｆｅスチール株式会社 Low yield ratio type high strength galvannealed steel sheet with excellent ductility and method for producing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11350038A (en) * 1998-06-12 1999-12-21 Nkk Corp Production of dual-phase high tensile strength cold rolled steel plate excellent in ductility and stretch-flanging formability
JP2010090432A (en) * 2008-10-08 2010-04-22 Jfe Steel Corp Super high-strength cold-rolled steel sheet excellent in ductility, and producing method of the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012002520A1 *

Also Published As

Publication number Publication date
JP5668337B2 (en) 2015-02-12
WO2012002520A1 (en) 2012-01-05
KR20130037208A (en) 2013-04-15
US20130087257A1 (en) 2013-04-11
JP2012012642A (en) 2012-01-19
KR101540507B1 (en) 2015-07-29
EP2589674A1 (en) 2013-05-08
CN102971442A (en) 2013-03-13

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