EP4039844A4 - High-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at core thereof, and method for manufacturing same - Google Patents
High-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at core thereof, and method for manufacturing same Download PDFInfo
- Publication number
- EP4039844A4 EP4039844A4 EP20872512.7A EP20872512A EP4039844A4 EP 4039844 A4 EP4039844 A4 EP 4039844A4 EP 20872512 A EP20872512 A EP 20872512A EP 4039844 A4 EP4039844 A4 EP 4039844A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- thick steel
- manufacturing same
- impact toughness
- strain aging
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title 1
- 230000032683 aging Effects 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
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
- C22C38/18—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
- 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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D6/001—Heat treatment of ferrous alloys containing 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
- 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
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/18—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
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020190121723A KR102237486B1 (en) | 2019-10-01 | 2019-10-01 | 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 |
PCT/KR2020/013062 WO2021066402A1 (en) | 2019-10-01 | 2020-09-25 | High-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at core thereof, and method for manufacturing same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4039844A1 EP4039844A1 (en) | 2022-08-10 |
EP4039844A4 true EP4039844A4 (en) | 2023-09-13 |
Family
ID=75338297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20872512.7A Pending EP4039844A4 (en) | 2019-10-01 | 2020-09-25 | High-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at core thereof, and method for manufacturing same |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220325395A1 (en) |
EP (1) | EP4039844A4 (en) |
JP (1) | JP7404520B2 (en) |
KR (1) | KR102237486B1 (en) |
CN (1) | CN114502762A (en) |
WO (1) | WO2021066402A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170335424A1 (en) * | 2014-12-24 | 2017-11-23 | Posco | High-strength steel having superior brittle crack arrestability, and production method therefor |
WO2018030737A1 (en) * | 2016-08-08 | 2018-02-15 | 주식회사 포스코 | Ultra-thick steel material having excellent resistance to brittle crack propagation and preparing method therefor |
WO2018117767A1 (en) * | 2016-12-23 | 2018-06-28 | 주식회사 포스코 | High-strength steel material having enhanced resistance to brittle crack propagation and break initiation at low temperature and method for manufacturing same |
US20190093204A1 (en) * | 2014-12-24 | 2019-03-28 | Posco | High-strength steel having superior brittle crack arrestability, and production method therefor |
WO2019124945A1 (en) * | 2017-12-22 | 2019-06-27 | 주식회사 포스코 | High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same |
WO2019132262A1 (en) * | 2017-12-26 | 2019-07-04 | 주식회사 포스코 | High-strength structural steel material having excellent fatigue crack propagation inhibitory characteristics and manufacturing method therefor |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH064903B2 (en) * | 1985-04-09 | 1994-01-19 | 新日本製鐵株式会社 | Steel plate with excellent brittle crack propagation arresting property and its manufacturing method |
JP3968011B2 (en) * | 2002-05-27 | 2007-08-29 | 新日本製鐵株式会社 | High strength steel excellent in low temperature toughness and weld heat affected zone toughness, method for producing the same and method for producing high strength steel pipe |
JP4696615B2 (en) * | 2005-03-17 | 2011-06-08 | 住友金属工業株式会社 | High-tensile steel plate, welded steel pipe and manufacturing method thereof |
WO2006106591A1 (en) * | 2005-04-04 | 2006-10-12 | Nippon Steel Corporation | High-strength steel sheet and high-strength welded steel pipe excelling in ductile fracture performance and process for producing them |
JP4975304B2 (en) * | 2005-11-28 | 2012-07-11 | 新日本製鐵株式会社 | Method for producing high-strength steel sheet having high tensile strength of 760 MPa class or more excellent in hydrogen-induced crack resistance and ductile fracture characteristics, and method for producing high-strength steel pipe using the steel sheet |
KR100851189B1 (en) * | 2006-11-02 | 2008-08-08 | 주식회사 포스코 | Steel plate for linepipe having ultra-high strength and excellent low temperature toughness and manufacturing method of the same |
KR100957970B1 (en) * | 2007-12-27 | 2010-05-17 | 주식회사 포스코 | High-strength and high-toughness thick steel plate and method for producing the same |
JP5532800B2 (en) * | 2009-09-30 | 2014-06-25 | Jfeスチール株式会社 | Low yield ratio high strength high uniform stretch steel plate with excellent strain aging resistance and method for producing the same |
JP4897126B2 (en) * | 2010-05-27 | 2012-03-14 | 新日本製鐵株式会社 | Thick steel plate manufacturing method |
JP6004903B2 (en) * | 2011-11-14 | 2016-10-12 | 山九株式会社 | Transport trailer for large toroidal articles |
KR101465088B1 (en) * | 2012-08-17 | 2014-11-26 | 포항공과대학교 산학협력단 | Low carbon high strength steel plates with good low temperature toughness and manufacturing method for the same |
KR20140098900A (en) * | 2013-01-31 | 2014-08-11 | 현대제철 주식회사 | High strength thick steel plate and method for manufacturing the same |
KR20150126031A (en) * | 2013-03-12 | 2015-11-10 | 제이에프이 스틸 가부시키가이샤 | Thick steel sheet having excellent ctod properties in multilayer welded joints, and manufacturing method for thick steel sheet |
JP6354790B2 (en) * | 2015-05-29 | 2018-07-11 | Jfeスチール株式会社 | Manufacturing method of steel plate for high strength and high toughness steel pipe and steel plate for high strength and high toughness steel pipe |
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 |
JP6682967B2 (en) * | 2016-04-06 | 2020-04-15 | 日本製鉄株式会社 | Steel plate and method of manufacturing the same |
JP6665659B2 (en) * | 2016-04-21 | 2020-03-13 | 日本製鉄株式会社 | Thick steel plate and manufacturing method thereof |
KR101917456B1 (en) * | 2016-12-22 | 2018-11-09 | 주식회사 포스코 | Extremely thick steel having excellent surface part naval research laboratory-drop weight test property |
KR102031451B1 (en) * | 2017-12-24 | 2019-10-11 | 주식회사 포스코 | High strength and low yield ratio steel for steel pipe having excellent low temperature toughness and manufacturing method for the same |
-
2019
- 2019-10-01 KR KR1020190121723A patent/KR102237486B1/en active IP Right Grant
-
2020
- 2020-09-25 WO PCT/KR2020/013062 patent/WO2021066402A1/en unknown
- 2020-09-25 EP EP20872512.7A patent/EP4039844A4/en active Pending
- 2020-09-25 US US17/763,820 patent/US20220325395A1/en active Pending
- 2020-09-25 CN CN202080068574.6A patent/CN114502762A/en active Pending
- 2020-09-25 JP JP2022520044A patent/JP7404520B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170335424A1 (en) * | 2014-12-24 | 2017-11-23 | Posco | High-strength steel having superior brittle crack arrestability, and production method therefor |
US20190093204A1 (en) * | 2014-12-24 | 2019-03-28 | Posco | High-strength steel having superior brittle crack arrestability, and production method therefor |
WO2018030737A1 (en) * | 2016-08-08 | 2018-02-15 | 주식회사 포스코 | Ultra-thick steel material having excellent resistance to brittle crack propagation and preparing method therefor |
WO2018117767A1 (en) * | 2016-12-23 | 2018-06-28 | 주식회사 포스코 | High-strength steel material having enhanced resistance to brittle crack propagation and break initiation at low temperature and method for manufacturing same |
WO2019124945A1 (en) * | 2017-12-22 | 2019-06-27 | 주식회사 포스코 | High-strength steel material for polar region environment having excellent anti-fracture characteristics at low temperatures and method for manufacturing same |
WO2019132262A1 (en) * | 2017-12-26 | 2019-07-04 | 주식회사 포스코 | High-strength structural steel material having excellent fatigue crack propagation inhibitory characteristics and manufacturing method therefor |
Non-Patent Citations (1)
Title |
---|
See also references of WO2021066402A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20220325395A1 (en) | 2022-10-13 |
KR102237486B1 (en) | 2021-04-08 |
JP7404520B2 (en) | 2023-12-25 |
JP2022550795A (en) | 2022-12-05 |
WO2021066402A1 (en) | 2021-04-08 |
CN114502762A (en) | 2022-05-13 |
EP4039844A1 (en) | 2022-08-10 |
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