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WO2011081349A3 - High strength steel sheet having excellent brittle crack resistance and method for manufacturing same - Google Patents

High strength steel sheet having excellent brittle crack resistance and method for manufacturing same Download PDF

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Publication number
WO2011081349A3
WO2011081349A3 PCT/KR2010/009222 KR2010009222W WO2011081349A3 WO 2011081349 A3 WO2011081349 A3 WO 2011081349A3 KR 2010009222 W KR2010009222 W KR 2010009222W WO 2011081349 A3 WO2011081349 A3 WO 2011081349A3
Authority
WO
WIPO (PCT)
Prior art keywords
steel sheet
crack resistance
brittle crack
high strength
strength steel
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.)
Ceased
Application number
PCT/KR2010/009222
Other languages
French (fr)
Korean (ko)
Other versions
WO2011081349A2 (en
Inventor
김상호
방기현
서인식
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
Priority to EP10841181.0A priority Critical patent/EP2520683B1/en
Priority to CN201080063862.9A priority patent/CN102753719B/en
Publication of WO2011081349A2 publication Critical patent/WO2011081349A2/en
Publication of WO2011081349A3 publication Critical patent/WO2011081349A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22C38/04—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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • 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
    • 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)

Abstract

The present invention relates to a steel sheet having excellent brittle crack resistance at a base and a welding heat affected zone, and particularly to a high strength steel sheet having excellent brittle crack resistance and a method for manufacturing the same, wherein the steel sheet comprises, by weight%, C: 0.02 to 0.06%, Si: 0.1% or lower, Mn: 1.5 to 2.0%, P: 0.012% or lower, S: 0.003% or lower, Ni: 0.5 to 1.5%, Al: 0.003 to 0.015%, Ti: 0.005 to 0.02%, Nb: 0.005 to 0.015%, N: 0.002 to 0.006%, and the balance Fe and unavoidable impurities, wherein the value of C+0.5Si-0.1Ni+6Al+3Nb is 0.1% or lower.
PCT/KR2010/009222 2009-12-28 2010-12-22 High strength steel sheet having excellent brittle crack resistance and method for manufacturing same Ceased WO2011081349A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10841181.0A EP2520683B1 (en) 2009-12-28 2010-12-22 High strength steel sheet having excellent brittle crack resistance and method for manufacturing same
CN201080063862.9A CN102753719B (en) 2009-12-28 2010-12-22 There is high tensile steel plate and the manufacture method thereof of excellent resistance to brittle fracture

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
KR10-2009-0131740 2009-12-28

Publications (2)

Publication Number Publication Date
WO2011081349A2 WO2011081349A2 (en) 2011-07-07
WO2011081349A3 true WO2011081349A3 (en) 2011-11-10

Family

ID=44226970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/009222 Ceased WO2011081349A2 (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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10774395B2 (en) 2015-05-22 2020-09-15 Outokumpu Oyj Method for manufacturing a component made of austenitic steel
US11247252B2 (en) 2015-07-16 2022-02-15 Outokumpu Oyj Method for manufacturing a component of austenitic TWIP or TRIP/TWIP steel

Families Citing this family (13)

* 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
EP3239330B1 (en) * 2014-12-24 2020-12-02 Posco High-strength steel having superior brittle crack arrestability, and production method therefor
US20170327922A1 (en) * 2014-12-24 2017-11-16 Posco High-strength steel having superior brittle crack arrestability, and production method therefor
JP6475837B2 (en) * 2014-12-24 2019-02-27 ポスコＰｏｓｃｏ High strength steel material excellent in brittle crack propagation resistance and manufacturing method thereof
KR101657827B1 (en) * 2014-12-24 2016-09-20 주식회사 포스코 Steel having excellent in resistibility of brittle crack arrestbility and manufacturing method thereof
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
JP6338022B2 (en) * 2016-02-24 2018-06-06 Ｊｆｅスチール株式会社 High-strength extra-thick steel plate with excellent brittle crack propagation stopping characteristics and method for producing the 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004315957A (en) * 2003-03-27 2004-11-11 Jfe Steel Kk Hot-rolled steel strip for high-strength ERW pipe excellent in low-temperature toughness and weldability and method for producing the same
WO2005052205A1 (en) * 2003-11-27 2005-06-09 Sumitomo Metal Industries, Ltd. High tensile steel excellent in toughness of welded zone and offshore structure
JP2008297575A (en) * 2007-05-29 2008-12-11 Kobe Steel Ltd Steel sheet having superior fatigue-crack propagation-inhibiting characteristics and brittle-fracture-inhibiting characteristics
WO2009072663A1 (en) * 2007-12-07 2009-06-11 Nippon Steel Corporation Steel with weld heat-affected zone having excellent ctod properties and process for producing the steel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CA2602076C (en) 2006-12-20 2012-07-10 Nippon Steel Corporation Steel excellent in toughness of weld heat affected zone
KR100985298B1 (en) * 2008-05-27 2010-10-04 주식회사 포스코 Low specific gravity high strength hot rolled sheet, cold rolled sheet, galvanized sheet and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004315957A (en) * 2003-03-27 2004-11-11 Jfe Steel Kk Hot-rolled steel strip for high-strength ERW pipe excellent in low-temperature toughness and weldability and method for producing the same
WO2005052205A1 (en) * 2003-11-27 2005-06-09 Sumitomo Metal Industries, Ltd. High tensile steel excellent in toughness of welded zone and offshore structure
JP2008297575A (en) * 2007-05-29 2008-12-11 Kobe Steel Ltd Steel sheet having superior fatigue-crack propagation-inhibiting characteristics and brittle-fracture-inhibiting characteristics
WO2009072663A1 (en) * 2007-12-07 2009-06-11 Nippon Steel Corporation Steel with weld heat-affected zone having excellent ctod properties and process for producing the steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2520683A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10774395B2 (en) 2015-05-22 2020-09-15 Outokumpu Oyj Method for manufacturing a component made of austenitic steel
US11247252B2 (en) 2015-07-16 2022-02-15 Outokumpu Oyj Method for manufacturing a component of austenitic TWIP or TRIP/TWIP steel

Also Published As

Publication number Publication date
KR101360737B1 (en) 2014-02-07
WO2011081349A2 (en) 2011-07-07
CN102753719A (en) 2012-10-24
EP2520683B1 (en) 2016-11-30
CN102753719B (en) 2015-08-19
KR20110075321A (en) 2011-07-06
EP2520683A2 (en) 2012-11-07
EP2520683A4 (en) 2015-03-11

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