JP7372325B2 - 低温破壊靭性及び伸びに優れた高強度鋼板、並びにその製造方法 - Google Patents

低温破壊靭性及び伸びに優れた高強度鋼板、並びにその製造方法 Download PDF

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Publication number: JP7372325B2
Authority: JP; Japan
Prior art keywords: steel plate; less; temperature; rolling; fracture toughness
Prior art date: 2018-11-30
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.): Active

Application number

JP2021530865A

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English (en)

Japanese (ja)

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JP2022510935A (ja

Inventor

ユ，ジャン‐ヨン

ベ，ム‐ジョン

パク，ヨン‐ジョン

Original Assignee

ポスコカンパニーリミテッド

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.)

2018-11-30

Filing date

2019-11-29

Publication date

2023-10-31

2019-11-29 Application filed by ポスコカンパニーリミテッド filed Critical ポスコカンパニーリミテッド

2022-01-28 Publication of JP2022510935A publication Critical patent/JP2022510935A/ja

2023-10-31 Application granted granted Critical

2023-10-31 Publication of JP7372325B2 publication Critical patent/JP7372325B2/ja

Status Active legal-status Critical Current

2039-11-29 Anticipated expiration legal-status Critical

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229910000831 Steel Inorganic materials 0.000 title claims description 134
239000010959 steel Substances 0.000 title claims description 134
238000004519 manufacturing process Methods 0.000 title claims description 28
238000005096 rolling process Methods 0.000 claims description 54
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 50
238000001816 cooling Methods 0.000 claims description 43
239000010955 niobium Substances 0.000 claims description 35
239000011651 chromium Substances 0.000 claims description 33
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
239000010936 titanium Substances 0.000 claims description 30
239000011572 manganese Substances 0.000 claims description 29
238000001953 recrystallisation Methods 0.000 claims description 26
239000011575 calcium Substances 0.000 claims description 24
229910000859 α-Fe Inorganic materials 0.000 claims description 21
238000000034 method Methods 0.000 claims description 20
239000000463 material Substances 0.000 claims description 19
229910001563 bainite Inorganic materials 0.000 claims description 18
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 16
229910052799 carbon Inorganic materials 0.000 claims description 16
229910052759 nickel Inorganic materials 0.000 claims description 16
229910052758 niobium Inorganic materials 0.000 claims description 16
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 16
229910052757 nitrogen Inorganic materials 0.000 claims description 16
229910052710 silicon Inorganic materials 0.000 claims description 16
239000010703 silicon Substances 0.000 claims description 16
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 15
229910052804 chromium Inorganic materials 0.000 claims description 15
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 14
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
229910052782 aluminium Inorganic materials 0.000 claims description 14
229910052719 titanium Inorganic materials 0.000 claims description 14
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 13
229910052748 manganese Inorganic materials 0.000 claims description 13
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 12
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 12
229910052791 calcium Inorganic materials 0.000 claims description 12
229910052750 molybdenum Inorganic materials 0.000 claims description 12
239000011733 molybdenum Substances 0.000 claims description 12
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
229910000734 martensite Inorganic materials 0.000 claims description 11
229910052698 phosphorus Inorganic materials 0.000 claims description 11
239000011574 phosphorus Substances 0.000 claims description 11
229910052717 sulfur Inorganic materials 0.000 claims description 11
239000011593 sulfur Substances 0.000 claims description 11
239000012535 impurity Substances 0.000 claims description 10
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
239000000203 mixture Substances 0.000 description 17
230000000694 effects Effects 0.000 description 14
229910045601 alloy Inorganic materials 0.000 description 12
239000000956 alloy Substances 0.000 description 12
229910001566 austenite Inorganic materials 0.000 description 9
238000003303 reheating Methods 0.000 description 9
239000013078 crystal Substances 0.000 description 6
230000015572 biosynthetic process Effects 0.000 description 5
230000007423 decrease Effects 0.000 description 5
238000001887 electron backscatter diffraction Methods 0.000 description 5
230000003287 optical effect Effects 0.000 description 5
239000006104 solid solution Substances 0.000 description 5
ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
238000010438 heat treatment Methods 0.000 description 3
230000000704 physical effect Effects 0.000 description 3
238000005728 strengthening Methods 0.000 description 3
239000007789 gas Substances 0.000 description 2
238000005098 hot rolling Methods 0.000 description 2
239000003921 oil Substances 0.000 description 2
239000002244 precipitate Substances 0.000 description 2
238000007670 refining Methods 0.000 description 2
241000219307 Atriplex rosea Species 0.000 description 1
238000005275 alloying Methods 0.000 description 1
238000005266 casting Methods 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
230000006866 deterioration Effects 0.000 description 1
238000009826 distribution Methods 0.000 description 1
239000012467 final product Substances 0.000 description 1
230000001590 oxidative effect Effects 0.000 description 1
239000002245 particle Substances 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
239000002689 soil Substances 0.000 description 1
238000007711 solidification Methods 0.000 description 1
230000008023 solidification Effects 0.000 description 1
239000000243 solution Substances 0.000 description 1
238000009628 steelmaking Methods 0.000 description 1
238000009864 tensile test Methods 0.000 description 1

Images

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

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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)

JP2021530865A 2018-11-30 2019-11-29 低温破壊靭性及び伸びに優れた高強度鋼板、並びにその製造方法 Active JP7372325B2 (ja)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
KR10-2018-0151565		2018-11-30
KR1020180151565A KR102164107B1 (ko)	2018-11-30	2018-11-30	저온파괴인성 및 연신율이 우수한 고강도 강판 및 그 제조방법
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
JP2022510935A JP2022510935A (ja)	2022-01-28
JP7372325B2 true JP7372325B2 (ja)	2023-10-31

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Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP2021530865A Active JP7372325B2 (ja)	2018-11-30	2019-11-29	低温破壊靭性及び伸びに優れた高強度鋼板、並びにその製造方法

Country Status (7)

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

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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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2008095152A (ja)	2006-10-12	2008-04-24	Nippon Steel Corp	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
WO2015030210A1 (ja)	2013-08-30	2015-03-05	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
US20180073094A1 (en)	2015-03-20	2018-03-15	Baoshan Iron & Steel Co., Ltd.	X80 pipeline steel with good strain-aging performance, pipeline tube and method for producing same
CN108467993A (zh)	2018-06-11	2018-08-31	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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU736035B2 (en) *	1997-07-28	2001-07-26	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
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
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
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

2018
- 2018-11-30 KR KR1020180151565A patent/KR102164107B1/ko active IP Right Grant
2019
- 2019-11-29 JP JP2021530865A patent/JP7372325B2/ja active Active
- 2019-11-29 CA CA3120271A patent/CA3120271C/en active Active
- 2019-11-29 RU RU2021118464A patent/RU2771151C1/ru active
- 2019-11-29 WO PCT/KR2019/016785 patent/WO2020111891A1/ko unknown
- 2019-11-29 EP EP19889727.4A patent/EP3889305B1/en active Active
- 2019-11-29 CN CN201980078794.4A patent/CN113166904B/zh active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2008095152A (ja)	2006-10-12	2008-04-24	Nippon Steel Corp	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
WO2015030210A1 (ja)	2013-08-30	2015-03-05	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
US20180073094A1 (en)	2015-03-20	2018-03-15	Baoshan Iron & Steel Co., Ltd.	X80 pipeline steel with good strain-aging performance, pipeline tube and method for producing same
CN108467993A (zh)	2018-06-11	2018-08-31	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
WO2020111891A1 (ko)	2020-06-04
EP3889305B1 (en)	2024-04-10
RU2771151C1 (ru)	2022-04-27
CA3120271C (en)	2023-09-12
EP3889305C0 (en)	2024-04-10
EP3889305A4 (en)	2021-10-06
JP2022510935A (ja)	2022-01-28
CN113166904A (zh)	2021-07-23
KR102164107B1 (ko)	2020-10-13
CN113166904B (zh)	2023-10-27
EP3889305A1 (en)	2021-10-06
CA3120271A1 (en)	2020-06-04
KR20200066394A (ko)	2020-06-10

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