WO2020111860A3 - 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법 - Google Patents

취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법 Download PDF

Info

Publication number
WO2020111860A3
WO2020111860A3 PCT/KR2019/016702 KR2019016702W WO2020111860A3 WO 2020111860 A3 WO2020111860 A3 WO 2020111860A3 KR 2019016702 W KR2019016702 W KR 2019016702W WO 2020111860 A3 WO2020111860 A3 WO 2020111860A3
Authority
WO
WIPO (PCT)
Prior art keywords
ultra
thick steel
brittle crack
manufacturing
steel excellent
Prior art date
Application number
PCT/KR2019/016702
Other languages
English (en)
French (fr)
Other versions
WO2020111860A2 (ko
Inventor
이학철
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.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to US17/297,940 priority Critical patent/US20220025491A1/en
Priority to JP2021530867A priority patent/JP7265009B2/ja
Priority to CN201980078893.2A priority patent/CN113166888A/zh
Priority to EP19891138.0A priority patent/EP3889295A4/en
Publication of WO2020111860A2 publication Critical patent/WO2020111860A2/ko
Publication of WO2020111860A3 publication Critical patent/WO2020111860A3/ko

Links

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
    • C22C38/04—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
    • 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
    • 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
    • C21D8/005—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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0231—Warm 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
    • C22C38/002—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
    • C22C38/08—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
    • C21D2211/002—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)

Abstract

본 발명의 일 측면에 따른 취성균열전파 저항성이 우수한 극후물 강재는, 중량%로, C: 0.02~0.07%, Mn: 1.8~2.2%, Ni: 0.7~1.2%, Nb: 0.005~0.02%, Ti: 0.005~0.02%, Cu: 0.1~0.4%, P: 0.01% 이하, S: 0.004% 이하, 나머지 Fe 및 불가피한 불순물을 포함하고, t/4~(3*t)/8 영역(여기서, t는 강재 두께를 의미함, 이하 동일)에서 EBSD로 측정한 15도 이상의 고경계각을 가지는 결정립의 평균 입도가 15㎛ 이하일 수 있다.
PCT/KR2019/016702 2018-11-30 2019-11-29 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법 WO2020111860A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/297,940 US20220025491A1 (en) 2018-11-30 2019-11-29 Ultra-thick steel excellent in brittle crack arrestability and manufacturing method therefor
JP2021530867A JP7265009B2 (ja) 2018-11-30 2019-11-29 脆性割れ伝播抵抗性に優れた極厚物鋼材及びその製造方法
CN201980078893.2A CN113166888A (zh) 2018-11-30 2019-11-29 脆性裂纹止裂特性优异的超厚钢及其制造方法
EP19891138.0A EP3889295A4 (en) 2018-11-30 2019-11-29 ULTRA THICK STEEL WITH EXCELLENT BRITTLE STRENGTH AND PRODUCTION PROCESSES FOR THEREOF

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0151871 2018-11-30
KR1020180151871A KR102209561B1 (ko) 2018-11-30 2018-11-30 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법

Publications (2)

Publication Number Publication Date
WO2020111860A2 WO2020111860A2 (ko) 2020-06-04
WO2020111860A3 true WO2020111860A3 (ko) 2020-08-06

Family

ID=70852065

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/016702 WO2020111860A2 (ko) 2018-11-30 2019-11-29 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법

Country Status (6)

Country Link
US (1) US20220025491A1 (ko)
EP (1) EP3889295A4 (ko)
JP (1) JP7265009B2 (ko)
KR (1) KR102209561B1 (ko)
CN (1) CN113166888A (ko)
WO (1) WO2020111860A2 (ko)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110075321A (ko) * 2009-12-28 2011-07-06 주식회사 포스코 취성 균열 발생 저항성이 우수한 고강도 강판 및 그 제조방법
JP2013245360A (ja) * 2012-05-23 2013-12-09 Nippon Steel & Sumitomo Metal Corp Ｌｐｇタンク用鋼板
KR20160078927A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
KR20160078926A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
KR20160078928A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2013221190A (ja) * 2012-04-17 2013-10-28 Nippon Steel & Sumitomo Metal Corp 脆性亀裂伝播停止性能に優れた高強度厚鋼板
KR101657840B1 (ko) 2014-12-25 2016-09-20 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
KR101726082B1 (ko) * 2015-12-04 2017-04-12 주식회사 포스코 취성균열전파 저항성 및 용접부 취성균열개시 저항성이 우수한 고강도 강재 및 그 제조방법
KR101917456B1 (ko) * 2016-12-22 2018-11-09 주식회사 포스코 표면부 nrl-dwt 물성이 우수한 극후물 강재 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
CN108660389B (zh) * 2017-03-29 2020-04-24 鞍钢股份有限公司 一种具有优异止裂性的高强厚钢板及其制造方法
KR102209547B1 (ko) * 2018-12-19 2021-01-28 주식회사 포스코 취성균열개시 저항성이 우수한 구조용 극후물 강재 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110075321A (ko) * 2009-12-28 2011-07-06 주식회사 포스코 취성 균열 발생 저항성이 우수한 고강도 강판 및 그 제조방법
JP2013245360A (ja) * 2012-05-23 2013-12-09 Nippon Steel & Sumitomo Metal Corp Ｌｐｇタンク用鋼板
KR20160078927A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
KR20160078926A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
KR20160078928A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법

Also Published As

Publication number Publication date
EP3889295A4 (en) 2022-03-09
EP3889295A2 (en) 2021-10-06
KR20200065417A (ko) 2020-06-09
US20220025491A1 (en) 2022-01-27
JP2022510936A (ja) 2022-01-28
JP7265009B2 (ja) 2023-04-25
WO2020111860A2 (ko) 2020-06-04
KR102209561B1 (ko) 2021-01-28
CN113166888A (zh) 2021-07-23

Similar Documents

Publication Publication Date Title
MX2017001374A (es) Procedimiento para la fabricacion de laminas de acero para el endurecimiento por presion y piezas obtenidas por este procedimiento.
MX2017010532A (es) Lamina o placa de acero laminada en caliente.
UA107519C2 (uk) Гаряче- або холоднокатаний сталевий лист, спосіб його виготовлення та його застосування в автомобільній промисловості
MX2017013468A (es) Acero, producto hecho de tal acero y metodo de fabricacion del mismo.
MX2018004385A (es) Acero, producto creado a partir de tal acero, y metodo de fabricacion del mismo.
MX2019001600A (es) Lamina de acero, y metodo de produccion para la misma.
MY191191A (en) High-strength steel sheet and method for manufacturing the same
WO2016105064A8 (ko) 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
MX2019009529A (es) Lamina de acero laminada en caliente y metodo para producir la misma.
WO2016105059A8 (ko) 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법
TWI493048B (zh) Titanium sheet
MX2018011889A (es) Chapa de acero, chapa de acero revestida, metodo para producir chapa de acero laminada en caliente, metodo para producir chapa de acero muy dura laminada en frio, metodo para producir chapa de acero y metodo para producir chapa de acero revestida.
MX2018011818A (es) Aleaciones de aluminio con propiedades tensoras mejoradas.
MX2021010795A (es) Miembro de prensado en caliente, metodo de produccion de lamina de acero para prensado en caliente y metodo de produccion de miembro de prensado en caliente.
JPWO2014157146A1 (ja) オーステナイト系ステンレス鋼板およびそれを用いた高強度鋼材の製造方法
WO2020111860A3 (ko) 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법
MX2020001521A (es) Lamina de acero inoxidable ferritico laminada en caliente y recocida y metodo para la fabricacion de la misma.
CA3156482A1 (en) COATED STEEL SUBSTRATE
KR20140131214A (ko) 시효균열 저항성이 향상된 오스테나이트계 스테인리스강
MX2017015332A (es) Lamina de acero rolada en caliente, lamina de acero extra rigido rolada en frio, y metodo para fabricar lamina de acero rolada en caliente.
WO2020111783A3 (ko) 무방향성 전기강판 및 그 제조방법
WO2020111867A3 (ko) 우수한 저항복비 및 저온인성 특성을 가지는 구조용강 및 그 제조방법
MX2020006335A (es) Un sustrato de acero recubierto.
PH12018550122A1 (en) Steel sheet for can and method for manufacturing the same
WO2021125724A3 (ko) 내열성과 성형성이 우수한 냉연강판 및 그 제조방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19891138

Country of ref document: EP

Kind code of ref document: A2

ENP Entry into the national phase

Ref document number: 2021530867

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019891138

Country of ref document: EP

Effective date: 20210630