EP3385401A4 - Acier haute résistance présentant d'excellentes propriétés de capacité antifissures fragiles et de résistance d'amorçage de fissures fragiles de partie de soudage, et son procédé de production - Google Patents

Acier haute résistance présentant d'excellentes propriétés de capacité antifissures fragiles et de résistance d'amorçage de fissures fragiles de partie de soudage, et son procédé de production Download PDF

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Publication number
EP3385401A4
EP3385401A4 EP16871071.3A EP16871071A EP3385401A4 EP 3385401 A4 EP3385401 A4 EP 3385401A4 EP 16871071 A EP16871071 A EP 16871071A EP 3385401 A4 EP3385401 A4 EP 3385401A4
Authority
EP
European Patent Office
Prior art keywords
brittle crack
production method
strength steel
method therefor
welding part
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
EP16871071.3A
Other languages
German (de)
English (en)
Other versions
EP3385401B1 (fr
EP3385401A1 (fr
Inventor
Hak-Cheol Lee
Sung-Ho Jang
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 EP3385401A4 publication Critical patent/EP3385401A4/fr
Publication of EP3385401A1 publication Critical patent/EP3385401A1/fr
Application granted granted Critical
Publication of EP3385401B1 publication Critical patent/EP3385401B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying 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
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/08Ferrous alloys, e.g. steel alloys containing nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/16Ferrous alloys, e.g. steel alloys containing copper
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/002Bainite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite

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)
EP16871071.3A 2015-12-04 2016-12-02 Acier haute résistance présentant d'excellentes propriétés de capacité antifissures fragiles et de résistance d'amorçage de fissures fragiles de partie de soudage, et son procédé de production Active EP3385401B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150172689A KR101726082B1 (ko) 2015-12-04 2015-12-04 취성균열전파 저항성 및 용접부 취성균열개시 저항성이 우수한 고강도 강재 및 그 제조방법
PCT/KR2016/014088 WO2017095175A1 (fr) 2015-12-04 2016-12-02 Acier haute résistance présentant d'excellentes propriétés de capacité antifissures fragiles et de résistance d'amorçage de fissures fragiles de partie de soudage, et son procédé de production

Publications (3)

Publication Number Publication Date
EP3385401A4 true EP3385401A4 (fr) 2018-10-10
EP3385401A1 EP3385401A1 (fr) 2018-10-10
EP3385401B1 EP3385401B1 (fr) 2020-02-12

Family

ID=58580210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16871071.3A Active EP3385401B1 (fr) 2015-12-04 2016-12-02 Acier haute résistance présentant d'excellentes propriétés de capacité antifissures fragiles et de résistance d'amorçage de fissures fragiles de partie de soudage, et son procédé de production

Country Status (6)

Country Link
US (1) US20180363081A1 (fr)
EP (1) EP3385401B1 (fr)
JP (1) JP6648270B2 (fr)
KR (1) KR101726082B1 (fr)
CN (1) CN108368587B (fr)
WO (1) WO2017095175A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019069771A1 (fr) * 2017-10-03 2019-04-11 新日鐵住金株式会社 Tôle d'acier, et procédé de fabrication de celle-ci
KR101999015B1 (ko) 2017-12-24 2019-07-10 주식회사 포스코 취성균열 전파 저항성이 우수한 구조용 강재 및 그 제조방법
KR102209561B1 (ko) * 2018-11-30 2021-01-28 주식회사 포스코 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법
ES2895456T3 (es) 2018-12-11 2022-02-21 Ssab Technology Ab Producto de acero de alta resistencia y método de fabricación del mismo
KR102200243B1 (ko) * 2018-12-18 2021-01-07 주식회사 포스코 저온인성이 우수한 대입열 해양구조용강 용접이음부
KR102209547B1 (ko) * 2018-12-19 2021-01-28 주식회사 포스코 취성균열개시 저항성이 우수한 구조용 극후물 강재 및 그 제조방법
JP7398970B2 (ja) * 2019-04-22 2023-12-15 株式会社神戸製鋼所 厚鋼板およびその製造方法
KR102255818B1 (ko) * 2019-06-24 2021-05-25 주식회사 포스코 내부식성이 우수한 고강도 구조용 강재 및 그 제조방법
KR102237486B1 (ko) * 2019-10-01 2021-04-08 주식회사 포스코 중심부 극저온 변형시효충격인성이 우수한 고강도 극후물 강재 및 그 제조방법
KR102312510B1 (ko) * 2019-12-17 2021-10-14 주식회사 포스코 내지연파괴 특성이 우수한 냉간압조용 선재, 부품 및 그 제조방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660346A2 (fr) * 2010-12-28 2013-11-06 Posco Tôle d'acier à haute résistance ayant ténacité supérieure à des températures cryogéniques et son procédé de fabrication
KR20150112489A (ko) * 2014-03-28 2015-10-07 현대제철 주식회사 강재 및 그 제조 방법

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US5470529A (en) * 1994-03-08 1995-11-28 Sumitomo Metal Industries, Ltd. High tensile strength steel sheet having improved formability
JP3474661B2 (ja) * 1995-01-24 2003-12-08 新日本製鐵株式会社 亀裂伝播停止特性に優れた耐サワー鋼板
JPH10183241A (ja) * 1996-12-25 1998-07-14 Nippon Steel Corp 溶接性および低温靭性の優れた低降伏比高張力鋼の製造方法
JP4445161B2 (ja) * 2001-06-19 2010-04-07 新日本製鐵株式会社 疲労強度に優れた厚鋼板の製造方法
KR20090006987A (ko) * 2007-07-13 2009-01-16 삼성전자주식회사 잉크젯 화상형성장치
KR100957964B1 (ko) * 2007-12-26 2010-05-17 주식회사 포스코 용접열영향부의 저온인성과 인장강도가 우수한 고강도저항복비 구조용 강재 및 그 제조방법
JP5348386B2 (ja) * 2008-10-24 2013-11-20 Jfeスチール株式会社 低降伏比かつ耐脆性亀裂発生特性に優れた厚肉高張力鋼板およびその製造方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660346A2 (fr) * 2010-12-28 2013-11-06 Posco Tôle d'acier à haute résistance ayant ténacité supérieure à des températures cryogéniques et son procédé de fabrication
KR20150112489A (ko) * 2014-03-28 2015-10-07 현대제철 주식회사 강재 및 그 제조 방법

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See also references of WO2017095175A1 *

Also Published As

Publication number Publication date
EP3385401B1 (fr) 2020-02-12
KR101726082B1 (ko) 2017-04-12
JP6648270B2 (ja) 2020-02-14
JP2019502018A (ja) 2019-01-24
CN108368587B (zh) 2020-05-26
WO2017095175A1 (fr) 2017-06-08
US20180363081A1 (en) 2018-12-20
EP3385401A1 (fr) 2018-10-10
CN108368587A (zh) 2018-08-03

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