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EP3730659A4 - High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same - Google Patents

High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same Download PDF

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Publication number
EP3730659A4
EP3730659A4 EP18893271.9A EP18893271A EP3730659A4 EP 3730659 A4 EP3730659 A4 EP 3730659A4 EP 18893271 A EP18893271 A EP 18893271A EP 3730659 A4 EP3730659 A4 EP 3730659A4
Authority
EP
European Patent Office
Prior art keywords
steel material
low temperatures
strength steel
excellent anti
manufacturing same
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.)
Pending
Application number
EP18893271.9A
Other languages
German (de)
French (fr)
Other versions
EP3730659A1 (en
Inventor
Kyung-Keun Um
Hak-Cheol Lee
Woo-Gyeom KIM
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 EP3730659A1 publication Critical patent/EP3730659A1/en
Publication of EP3730659A4 publication Critical patent/EP3730659A4/en
Pending legal-status Critical Current

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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
    • C22C38/02—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
    • C22C38/18—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
    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/02—Hardening by precipitation
    • 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
    • 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
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • 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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
EP18893271.9A 2017-12-22 2018-12-18 High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same Pending EP3730659A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170178817A KR102045641B1 (en) 2017-12-22 2017-12-22 High strength steel for arctic environment having excellent resistance to fracture in low temperature, and method for manufacturing the same
PCT/KR2018/016155 WO2019124945A1 (en) 2017-12-22 2018-12-18 High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same

Publications (2)

Publication Number Publication Date
EP3730659A1 EP3730659A1 (en) 2020-10-28
EP3730659A4 true EP3730659A4 (en) 2021-03-03

Family

ID=66993564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18893271.9A Pending EP3730659A4 (en) 2017-12-22 2018-12-18 High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same

Country Status (5)

Country Link
EP (1) EP3730659A4 (en)
JP (1) JP7045459B2 (en)
KR (1) KR102045641B1 (en)
CN (1) CN111492085B (en)
WO (1) WO2019124945A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102237486B1 (en) * 2019-10-01 2021-04-08 주식회사 포스코 High strength ultra thick steel plate having excellent very low temperature strain aging impact toughness at the center of thickness and method of manufacturing the same
CN114058942B (en) * 2020-07-31 2022-08-16 宝山钢铁股份有限公司 Steel plate for torsion beam and manufacturing method thereof, torsion beam and manufacturing method thereof
KR102485117B1 (en) * 2020-08-25 2023-01-04 주식회사 포스코 Ultra thick steel plate having excellent surface part nrl-dwt property and manufacturing method thereof
KR102443927B1 (en) * 2020-08-26 2022-09-19 주식회사 포스코 Hot-rolled steel sheet with excellent weld impact toughness and manufacturing method thereof
KR102397583B1 (en) * 2020-09-25 2022-05-13 주식회사 포스코 High Strength Hot Rolled Steel Sheet with Excellent Elongation and Method of Manufacturing Thereof
KR102409896B1 (en) * 2020-10-23 2022-06-20 주식회사 포스코 High strength steel plate having excellent workability and method for manufacturing the same
CN112695254A (en) * 2020-10-30 2021-04-23 南京钢铁股份有限公司 Medium-manganese low-nickel high-performance steel for marine environment and preparation method thereof
CN114134432B (en) * 2021-05-06 2022-12-06 江阴兴澄特种钢铁有限公司 High-strength steel plate with high tempering resistance and stability produced by TMCP (thermal mechanical control processing) process and manufacturing method thereof
EP4450671A1 (en) * 2023-04-18 2024-10-23 SSAB Technology AB Steel product and method of manufacturing the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090070484A (en) * 2007-12-27 2009-07-01 주식회사 포스코 High strength high toughness steel plate and manufacturing method thereof
KR20110062903A (en) * 2009-12-04 2011-06-10 주식회사 포스코 Steel plate for ultra high strength line pipe with excellent surface cracking resistance and manufacturing method
US20140158259A1 (en) * 2006-11-02 2014-06-12 Posco Method of Manufacturing a Steel Plate for Linepipe having Ultra-High Strength and Excellent Low Temperature Toughness
CN105525213A (en) * 2016-01-21 2016-04-27 东北大学 High-strength-toughness and high-temperature hot rolled steel plate and preparation method thereof
CN106480381A (en) * 2015-08-31 2017-03-08 鞍钢股份有限公司 Hot-rolled wide and thick plate with good plastic toughness for low-temperature pipeline and manufacturing method thereof
WO2017095190A1 (en) * 2015-12-04 2017-06-08 주식회사 포스코 High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method therefor
KR20170075936A (en) * 2015-12-23 2017-07-04 주식회사 포스코 Thick Plate for Linepipes Having High Strength and Excellent Excessive Low Temperature Toughness And Method For Manufacturing The Same

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983722A (en) * 1982-11-05 1984-05-15 Kawasaki Steel Corp Preparation of low carbon equivalent unnormalized high tensile steel plate
JPH0615689B2 (en) * 1987-05-19 1994-03-02 新日本製鐵株式会社 Method of manufacturing low yield ratio high strength steel
JP3699657B2 (en) 2000-05-09 2005-09-28 新日本製鐵株式会社 Thick steel plate with yield strength of 460 MPa or more with excellent CTOD characteristics of the heat affected zone
JP2002194488A (en) * 2000-12-27 2002-07-10 Nkk Corp High tensile steel and method for producing the same
CN100588734C (en) * 2007-11-27 2010-02-10 湖南华菱湘潭钢铁有限公司 High-strength shipbuilding section and production method thereof
CN101514424A (en) * 2008-02-21 2009-08-26 宝山钢铁股份有限公司 TMCP ocean structure thick plate and method for manufacturing same
CN101705433B (en) * 2009-09-29 2011-12-21 燕山大学 196 DEG C below zero ultralow-temperature quake-proof structural steel
CN102234742B (en) * 2010-04-23 2015-12-02 宝山钢铁股份有限公司 A kind of steel plate for longitudinal welded pipe and manufacture method thereof
CN102409235A (en) * 2010-09-21 2012-04-11 鞍钢股份有限公司 High-strength cold-rolled phase-change induced plasticity steel plate and preparation method thereof
KR20120074705A (en) * 2010-12-28 2012-07-06 주식회사 포스코 High strength steel plate for welding structure with superior haz toughness for high heat input welding and method for manufacturing the same
WO2013100106A1 (en) * 2011-12-28 2013-07-04 新日鐵住金株式会社 High strength steel pipe having excellent ductility and low temperature toughness, high strength steel sheet, and method for producing steel sheet
JP5516784B2 (en) * 2012-03-29 2014-06-11 Ｊｆｅスチール株式会社 Low yield ratio high strength steel sheet, method for producing the same, and high strength welded steel pipe using the same
JP2013204103A (en) * 2012-03-29 2013-10-07 Jfe Steel Corp High strength welded steel pipe for low temperature use having superior buckling resistance, and method for producing the same, and method for producing steel sheet for high strength welded steel pipe for low temperature use having superior buckling resistance
EP2843073B1 (en) * 2013-06-13 2017-08-02 Nippon Steel & Sumitomo Metal Corporation Ultrahigh-tensile-strength steel plate
CN105143487B (en) * 2013-08-30 2017-03-08 新日铁住金株式会社 The thick section and high strength spool steel plate of acid resistance, resistance to crushing characteristic and excellent in low temperature toughness and spool
US9668418B2 (en) * 2013-09-30 2017-06-06 Deere & Company Agricultural combine with windrow control circuit
KR101536471B1 (en) * 2013-12-24 2015-07-13 주식회사 포스코 Ultra-high strength steel sheet for welding structure with superior haz toughness for high heat input welding and method for manufacturing the same
JP6252291B2 (en) * 2014-03-26 2017-12-27 新日鐵住金株式会社 Steel sheet and manufacturing method thereof
KR20170038071A (en) * 2014-09-05 2017-04-05 제이에프이 스틸 가부시키가이샤 Thick steel sheet having excellent ctod properties in multi-layer welded joints and method for producing same
KR20160078714A (en) * 2014-12-24 2016-07-05 주식회사 포스코 High strength steel plate for welding structure with superior haz toughness for high heat input welding and method for manufacturing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140158259A1 (en) * 2006-11-02 2014-06-12 Posco Method of Manufacturing a Steel Plate for Linepipe having Ultra-High Strength and Excellent Low Temperature Toughness
KR20090070484A (en) * 2007-12-27 2009-07-01 주식회사 포스코 High strength high toughness steel plate and manufacturing method thereof
KR20110062903A (en) * 2009-12-04 2011-06-10 주식회사 포스코 Steel plate for ultra high strength line pipe with excellent surface cracking resistance and manufacturing method
CN106480381A (en) * 2015-08-31 2017-03-08 鞍钢股份有限公司 Hot-rolled wide and thick plate with good plastic toughness for low-temperature pipeline and manufacturing method thereof
WO2017095190A1 (en) * 2015-12-04 2017-06-08 주식회사 포스코 High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method therefor
KR20170075936A (en) * 2015-12-23 2017-07-04 주식회사 포스코 Thick Plate for Linepipes Having High Strength and Excellent Excessive Low Temperature Toughness And Method For Manufacturing The Same
CN105525213A (en) * 2016-01-21 2016-04-27 东北大学 High-strength-toughness and high-temperature hot rolled steel plate and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019124945A1 *

Also Published As

Publication number Publication date
KR20190076758A (en) 2019-07-02
CN111492085B (en) 2021-10-29
CN111492085A (en) 2020-08-04
WO2019124945A1 (en) 2019-06-27
KR102045641B1 (en) 2019-11-15
JP2021507989A (en) 2021-02-25
EP3730659A1 (en) 2020-10-28
JP7045459B2 (en) 2022-03-31

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