WO2012091411A3 - 극저온 인성이 우수한 고강도 강판 및 그 제조방법 - Google Patents

극저온 인성이 우수한 고강도 강판 및 그 제조방법 Download PDF

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Publication number
WO2012091411A3
WO2012091411A3 PCT/KR2011/010156 KR2011010156W WO2012091411A3 WO 2012091411 A3 WO2012091411 A3 WO 2012091411A3 KR 2011010156 W KR2011010156 W KR 2011010156W WO 2012091411 A3 WO2012091411 A3 WO 2012091411A3
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WO
WIPO (PCT)
Prior art keywords
steel sheet
strength steel
superior toughness
cryogenic temperatures
strength
Prior art date
Application number
PCT/KR2011/010156
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English (en)
French (fr)
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WO2012091411A2 (ko
WO2012091411A9 (ko
Inventor
김우겸
김상호
방기현
서인식
Original Assignee
주식회사 포스코
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.)
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Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to ES11853770.3T priority Critical patent/ES2585635T3/es
Priority to EP11853770.3A priority patent/EP2660346B1/en
Priority to JP2013547333A priority patent/JP5740486B2/ja
Priority to CN201180068651.9A priority patent/CN103403204B/zh
Priority to US13/997,703 priority patent/US9255305B2/en
Publication of WO2012091411A2 publication Critical patent/WO2012091411A2/ko
Publication of WO2012091411A9 publication Critical patent/WO2012091411A9/ko
Publication of WO2012091411A3 publication Critical patent/WO2012091411A3/ko

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    • 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
    • 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
    • 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
    • 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
    • C22C38/02—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
    • C22C38/08—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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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

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  • 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

본 발명의 일측면은 중량%로, C: 0.02~0.06%, Si: 0.1~0.35%, Mn: 1.0~1.6%, Al: 0.02% 이하(0%는 제외), Ni: 0.7~2.0%, Cu: 0.4~0.9%, Ti: 0.003~0.015%, Nb: 0.003~0.02%, P: 0.01% 이하, S: 0.005% 이하, 잔부 Fe 및 불가피한 불순물을 포함하고, [Mn]+5.4[Si]+26[Al]+32.8[Nb]<4.3를 만족하며, [Mn], [Si], [Al] 및 [Nb]는 Mn, Si, Al 및 Nb의 중량% 단위 함량을 의미하는 극저온 인성이 우수한 고강도 강판을 제공함으로써, 선박, 해양구조물 등의 구조용 강재나 액화가스를 저장, 운반 하는 탱크용 강재의 극저온 사용 환경에서도 우수한 인성을 확보할 수 있고, 인장강도가 490MPa 이상인 고강도를 확보할 수 있다.
PCT/KR2011/010156 2010-12-28 2011-12-27 극저온 인성이 우수한 고강도 강판 및 그 제조방법 WO2012091411A2 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES11853770.3T ES2585635T3 (es) 2010-12-28 2011-12-27 Lámina de acero de alta resistencia que tiene tenacidad superior a temperaturas criogénicas, y método para fabricar la misma
EP11853770.3A EP2660346B1 (en) 2010-12-28 2011-12-27 High-strength steel sheet having superior toughness at cryogenic temperatures, and method for manufacturing same
JP2013547333A JP5740486B2 (ja) 2010-12-28 2011-12-27 極低温靭性に優れた高強度鋼板及びその製造方法
CN201180068651.9A CN103403204B (zh) 2010-12-28 2011-12-27 在低温下具有优异韧性的高强度钢板及其制造方法
US13/997,703 US9255305B2 (en) 2010-12-28 2011-12-27 High-strength steel sheet having superior toughness at cryogenic temperatures, and method for manufacturing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20100137340A KR20120075274A (ko) 2010-12-28 2010-12-28 극저온 인성이 우수한 고강도 강판 및 그 제조방법
KR10-2010-0137340 2010-12-28

Publications (3)

Publication Number Publication Date
WO2012091411A2 WO2012091411A2 (ko) 2012-07-05
WO2012091411A9 WO2012091411A9 (ko) 2012-09-27
WO2012091411A3 true WO2012091411A3 (ko) 2012-11-15

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PCT/KR2011/010156 WO2012091411A2 (ko) 2010-12-28 2011-12-27 극저온 인성이 우수한 고강도 강판 및 그 제조방법

Country Status (7)

Country Link
US (1) US9255305B2 (ko)
EP (1) EP2660346B1 (ko)
JP (1) JP5740486B2 (ko)
KR (1) KR20120075274A (ko)
CN (1) CN103403204B (ko)
ES (1) ES2585635T3 (ko)
WO (1) WO2012091411A2 (ko)

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EP3239331B1 (en) * 2014-12-24 2020-10-28 Posco High-strength steel having superior brittle crack arrestability, and production method therefor
US10822671B2 (en) * 2014-12-24 2020-11-03 Posco High-strength steel having superior brittle crack arrestability, and production method therefor
US10883159B2 (en) 2014-12-24 2021-01-05 Posco High-strength steel having superior brittle crack arrestability, and production method therefor
KR101726082B1 (ko) * 2015-12-04 2017-04-12 주식회사 포스코 취성균열전파 저항성 및 용접부 취성균열개시 저항성이 우수한 고강도 강재 및 그 제조방법
KR101736611B1 (ko) * 2015-12-04 2017-05-17 주식회사 포스코 취성균열전파 저항성 및 용접부 취성균열개시 저항성이 우수한 고강도 강재 및 그 제조방법
KR101758520B1 (ko) * 2015-12-23 2017-07-17 주식회사 포스코 열간 저항성이 우수한 고강도 구조용 강판 및 그 제조방법
CN106435392B (zh) * 2016-09-23 2018-06-05 中国科学院合肥物质科学研究院 一种改进低活化马氏体钢力学性能的热机械处理方法
KR101819380B1 (ko) 2016-10-25 2018-01-17 주식회사 포스코 저온인성이 우수한 고강도 고망간강 및 그 제조방법
KR101908819B1 (ko) * 2016-12-23 2018-10-16 주식회사 포스코 저온에서의 파괴 개시 및 전파 저항성이 우수한 고강도 강재 및 그 제조방법
KR102220739B1 (ko) * 2018-12-19 2021-03-02 주식회사 포스코 두께 중심부 인성이 우수한 극후물 강판의 제조방법
KR102209547B1 (ko) * 2018-12-19 2021-01-28 주식회사 포스코 취성균열개시 저항성이 우수한 구조용 극후물 강재 및 그 제조방법
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Also Published As

Publication number Publication date
CN103403204A (zh) 2013-11-20
KR20120075274A (ko) 2012-07-06
WO2012091411A2 (ko) 2012-07-05
JP2014505170A (ja) 2014-02-27
EP2660346B1 (en) 2016-05-04
ES2585635T3 (es) 2016-10-07
EP2660346A2 (en) 2013-11-06
US9255305B2 (en) 2016-02-09
CN103403204B (zh) 2016-04-06
WO2012091411A9 (ko) 2012-09-27
EP2660346A4 (en) 2014-07-09
JP5740486B2 (ja) 2015-06-24
US20130292011A1 (en) 2013-11-07

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