CA3120271C - High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor - Google Patents

High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor Download PDF

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Publication number
CA3120271C
CA3120271C CA3120271A CA3120271A CA3120271C CA 3120271 C CA3120271 C CA 3120271C CA 3120271 A CA3120271 A CA 3120271A CA 3120271 A CA3120271 A CA 3120271A CA 3120271 C CA3120271 C CA 3120271C
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CA
Canada
Prior art keywords
steel plate
less
recrystallized
region
rolling
Prior art date
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Active
Application number
CA3120271A
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English (en)
French (fr)
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CA3120271A1 (en
Inventor
Jang-Yong Yoo
Moo-Jong BAE
Yoen-Jung PARK
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
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Posco Co Ltd
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Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of CA3120271A1 publication Critical patent/CA3120271A1/en
Application granted granted Critical
Publication of CA3120271C publication Critical patent/CA3120271C/en
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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
    • C22C38/001—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
    • C22C38/18—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
    • 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
    • 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
    • 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
    • C22C38/18—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
    • C22C38/48—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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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)
CA3120271A 2018-11-30 2019-11-29 High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor Active CA3120271C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020180151565A KR102164107B1 (ko) 2018-11-30 2018-11-30 저온파괴인성 및 연신율이 우수한 고강도 강판 및 그 제조방법
KR10-2018-0151565 2018-11-30
PCT/KR2019/016785 WO2020111891A1 (ko) 2018-11-30 2019-11-29 저온파괴인성 및 연신율이 우수한 고강도 강판 및 그 제조방법

Publications (2)

Publication Number Publication Date
CA3120271A1 CA3120271A1 (en) 2020-06-04
CA3120271C true CA3120271C (en) 2023-09-12

Family

ID=70854099

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3120271A Active CA3120271C (en) 2018-11-30 2019-11-29 High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor

Country Status (7)

Country Link
EP (1) EP3889305B1 (ja)
JP (1) JP7372325B2 (ja)
KR (1) KR102164107B1 (ja)
CN (1) CN113166904B (ja)
CA (1) CA3120271C (ja)
RU (1) RU2771151C1 (ja)
WO (1) WO2020111891A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112611656B (zh) * 2020-12-14 2024-03-08 中南大学 一种航空航天用铝合金低温延伸率的精确测量方法
KR102393906B1 (ko) * 2020-12-18 2022-05-03 주식회사 포스코 Dwtt 천이온도를 예측하는 방법

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264760B1 (en) * 1997-07-28 2001-07-24 Exxonmobil Upstream Research Company Ultra-high strength, weldable steels with excellent ultra-low temperature toughness
JP3968011B2 (ja) * 2002-05-27 2007-08-29 新日本製鐵株式会社 低温靱性および溶接熱影響部靱性に優れた高強度鋼とその製造方法および高強度鋼管の製造方法
JP4823841B2 (ja) * 2006-10-12 2011-11-24 新日本製鐵株式会社 音響異方性が小さく溶接性に優れる引張強さ５７０ＭＰａ級以上の超大入熱溶接用高張力鋼板およびその製造方法
US8647564B2 (en) * 2007-12-04 2014-02-11 Posco High-strength steel sheet with excellent low temperature toughness and manufacturing thereof
KR100951296B1 (ko) * 2007-12-04 2010-04-02 주식회사 포스코 저온인성이 우수한 고강도 라인파이프용 강판 및 그제조방법
RU2518830C1 (ru) * 2010-06-30 2014-06-10 Ниппон Стил Энд Сумитомо Метал Корпорейшн Горячекатаный стальной лист и способ его изготовления
KR101253958B1 (ko) * 2010-12-27 2013-04-16 주식회사 포스코 우수한 파괴전파 저항성 및 저항복비 특성을 갖는 라인파이프용 강판 및 그 제조방법
KR101360467B1 (ko) 2011-12-23 2014-02-10 주식회사 포스코 저온 파괴인성 및 균일연신율이 우수한 라인파이프용 강판 및 그 제조방법
KR101439685B1 (ko) * 2012-12-26 2014-09-12 주식회사 포스코 균일연신율 및 저온파괴인성이 우수한 라인파이프용 강판 및 그의 제조방법
JP5776860B1 (ja) * 2013-08-30 2015-09-09 新日鐵住金株式会社 耐サワー性、耐圧潰特性及び低温靭性に優れた厚肉高強度ラインパイプ用鋼板とラインパイプ
JP6354271B2 (ja) * 2014-04-08 2018-07-11 新日鐵住金株式会社 低温靭性と均一伸びと穴拡げ性に優れた引張強度７８０ＭＰａ以上の高強度熱延鋼板及びその製造方法
CN104789863B (zh) * 2015-03-20 2017-01-18 宝山钢铁股份有限公司 具有良好抗应变时效性能的x80管线钢、管线管及其制造方法
KR101889182B1 (ko) * 2016-12-20 2018-08-16 주식회사 포스코 길이방향 균일 연신율 및 저온 인성이 우수한 용접강관용 강재, 이의 제조방법 및 이를 이용한 강관
CN108467993B (zh) * 2018-06-11 2020-02-18 鞍钢股份有限公司 一种低温管线用超宽高韧性热轧厚板及其生产方法

Also Published As

Publication number Publication date
EP3889305A1 (en) 2021-10-06
CN113166904A (zh) 2021-07-23
KR20200066394A (ko) 2020-06-10
JP7372325B2 (ja) 2023-10-31
KR102164107B1 (ko) 2020-10-13
CN113166904B (zh) 2023-10-27
EP3889305A4 (en) 2021-10-06
EP3889305C0 (en) 2024-04-10
EP3889305B1 (en) 2024-04-10
WO2020111891A1 (ko) 2020-06-04
RU2771151C1 (ru) 2022-04-27
JP2022510935A (ja) 2022-01-28
CA3120271A1 (en) 2020-06-04

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