EP2520683A4 - HIGH STRENGTH STEEL SHEET HAVING EXCELLENT FRAGILE CRACK RESISTANCE AND MANUFACTURING METHOD THEREOF - Google Patents

HIGH STRENGTH STEEL SHEET HAVING EXCELLENT FRAGILE CRACK RESISTANCE AND MANUFACTURING METHOD THEREOF

Info

Publication number
EP2520683A4
EP2520683A4 EP10841181.0A EP10841181A EP2520683A4 EP 2520683 A4 EP2520683 A4 EP 2520683A4 EP 10841181 A EP10841181 A EP 10841181A EP 2520683 A4 EP2520683 A4 EP 2520683A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
steel sheet
high strength
strength steel
crack 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.)
Granted
Application number
EP10841181.0A
Other languages
German (de)
French (fr)
Other versions
EP2520683B1 (en
EP2520683A2 (en
Inventor
Sang-Ho Kim
Ki-Hyun Bang
In-Shik Suh
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 EP2520683A2 publication Critical patent/EP2520683A2/en
Publication of EP2520683A4 publication Critical patent/EP2520683A4/en
Application granted granted Critical
Publication of EP2520683B1 publication Critical patent/EP2520683B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C22C38/001—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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • 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
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/05—Grain orientation
    • 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
    • C21D2211/005—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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints

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)
EP10841181.0A 2009-12-28 2010-12-22 High strength steel sheet having excellent brittle crack resistance and method for manufacturing same Active EP2520683B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090131740A KR101360737B1 (en) 2009-12-28 2009-12-28 High strength steel plate having excellent resistance to brittle crack initiation and method for manufacturing the same
PCT/KR2010/009222 WO2011081349A2 (en) 2009-12-28 2010-12-22 High strength steel sheet having excellent brittle crack resistance and method for manufacturing same

Publications (3)

Publication Number Publication Date
EP2520683A2 EP2520683A2 (en) 2012-11-07
EP2520683A4 true EP2520683A4 (en) 2015-03-11
EP2520683B1 EP2520683B1 (en) 2016-11-30

Family

ID=44226970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10841181.0A Active EP2520683B1 (en) 2009-12-28 2010-12-22 High strength steel sheet having excellent brittle crack resistance and method for manufacturing same

Country Status (4)

Country Link
EP (1) EP2520683B1 (en)
KR (1) KR101360737B1 (en)
CN (1) CN102753719B (en)
WO (1) WO2011081349A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103695807B (en) * 2013-12-13 2016-01-20 莱芜钢铁集团有限公司 Strong X100 Pipeline Steel Plate of superelevation that crack arrest is excellent and preparation method thereof
CN103882312B (en) * 2014-03-04 2016-04-27 南京钢铁股份有限公司 The manufacture method of low-cost high-toughness-140 DEG C of Steel Plates For Low Temperature Service
WO2016105064A1 (en) 2014-12-24 2016-06-30 주식회사 포스코 High-strength steel having excellent resistance to brittle crack propagation, and production method therefor
CN107109597B (en) * 2014-12-24 2020-01-31 Posco公司 High-strength steel material having excellent brittle crack growth resistance and method for producing same
CN107109590A (en) * 2014-12-24 2017-08-29 Posco公司 The high strength steel and its manufacture method for the resistant expansibility excellent of resistance to brittle crack
KR101657827B1 (en) * 2014-12-24 2016-09-20 주식회사 포스코 Steel having excellent in resistibility of brittle crack arrestbility and manufacturing method thereof
EP3095889A1 (en) 2015-05-22 2016-11-23 Outokumpu Oyj Method for manufacturing a component made of austenitic steel
SI3117922T1 (en) 2015-07-16 2018-07-31 Outokumpu Oyj Method for manufacturing a component of austenitic twip or trip/twip steel
KR101726082B1 (en) * 2015-12-04 2017-04-12 주식회사 포스코 Steel having superior brittle crack arrestability and resistance brittle crack initiation of welding point and method for manufacturing the steel
KR101736611B1 (en) * 2015-12-04 2017-05-17 주식회사 포스코 Steel having superior brittle crack arrestability and resistance brittle crack initiation of welding point and method for manufacturing the steel
KR101758520B1 (en) * 2015-12-23 2017-07-17 주식회사 포스코 High strength structural steel sheet having excellent heat treatment resistance and method of manufacturing the same
CN115652197A (en) * 2016-02-24 2023-01-31 杰富意钢铁株式会社 High-strength extremely-thick steel sheet having excellent brittle crack propagation stopping properties and method for producing same
KR101917456B1 (en) 2016-12-22 2018-11-09 주식회사 포스코 Extremely thick steel having excellent surface part naval research laboratory-drop weight test property
KR102209561B1 (en) * 2018-11-30 2021-01-28 주식회사 포스코 Ultra thick steel excellent in brittle crack arrestability and manufacturing method for the same
KR102220739B1 (en) * 2018-12-19 2021-03-02 주식회사 포스코 Manufacturing mehtod for ultra thick steel plate having excellent toughness at the center of thickness

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2128293A1 (en) * 2008-05-27 2009-12-02 Posco Low specific gravity and high strength steel sheets with excellent ridging resistibility and manufacturing methods thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4341396B2 (en) * 2003-03-27 2009-10-07 Ｊｆｅスチール株式会社 High strength hot rolled steel strip for ERW pipes with excellent low temperature toughness and weldability
WO2005052205A1 (en) * 2003-11-27 2005-06-09 Sumitomo Metal Industries, Ltd. High tensile steel excellent in toughness of welded zone and offshore structure
CN101153370B (en) * 2006-09-27 2012-06-13 鞍钢股份有限公司 Low-alloy high-strength steel plate capable of being welded at high heat input and manufacturing method thereof
EP2060643B1 (en) 2006-12-20 2012-04-18 Nippon Steel Corporation Steel excelling in toughness at region affected by welding heat
JP4934505B2 (en) * 2007-05-29 2012-05-16 株式会社神戸製鋼所 Steel sheet with excellent fatigue crack growth suppression characteristics and brittle fracture suppression characteristics
KR20110125277A (en) * 2007-12-07 2011-11-18 신닛뽄세이테쯔 카부시키카이샤 Steel having excellent CT properties of weld heat affected zone and its manufacturing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2128293A1 (en) * 2008-05-27 2009-12-02 Posco Low specific gravity and high strength steel sheets with excellent ridging resistibility and manufacturing methods thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011081349A2 *

Also Published As

Publication number Publication date
WO2011081349A2 (en) 2011-07-07
CN102753719B (en) 2015-08-19
WO2011081349A3 (en) 2011-11-10
EP2520683B1 (en) 2016-11-30
CN102753719A (en) 2012-10-24
KR101360737B1 (en) 2014-02-07
EP2520683A2 (en) 2012-11-07
KR20110075321A (en) 2011-07-06

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