EP4249623A1 - Acier inoxydable austénitique à haute résistance présentant une excellente aptitude au façonnage à chaud - Google Patents

Acier inoxydable austénitique à haute résistance présentant une excellente aptitude au façonnage à chaud Download PDF

Info

Publication number: EP4249623A1
Authority: EP; European Patent Office
Prior art keywords: less; stainless steel; austenitic stainless; hot workability; formula
Prior art date: 2020-11-23
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

Application number

EP21894941.0A

Other languages

German (de)

English (en)

Inventor

Kyung-Hun Kim

Hak Kim

Manjin HA

Jisoo Kim

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.)

2020-11-23

Filing date

2021-10-29

Publication date

2023-09-27

2021-10-29 Application filed by Posco Co Ltd filed Critical Posco Co Ltd

2023-09-27 Publication of EP4249623A1 publication Critical patent/EP4249623A1/fr

Status Pending legal-status Critical Current

Links

229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 30
CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 claims abstract description 23
239000011651 chromium Substances 0.000 claims abstract description 23
238000001556 precipitation Methods 0.000 claims abstract description 20
239000012535 impurity Substances 0.000 claims abstract description 8
229910052757 nitrogen Inorganic materials 0.000 claims description 17
229910052799 carbon Inorganic materials 0.000 claims description 16
229910052748 manganese Inorganic materials 0.000 claims description 9
229910052804 chromium Inorganic materials 0.000 claims description 8
229910052750 molybdenum Inorganic materials 0.000 claims description 8
229910052802 copper Inorganic materials 0.000 claims description 7
229910052710 silicon Inorganic materials 0.000 claims description 7
229910052759 nickel Inorganic materials 0.000 claims description 6
239000011572 manganese Substances 0.000 description 25
PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 21
239000010949 copper Substances 0.000 description 17
229910000859 α-Fe Inorganic materials 0.000 description 13
235000019589 hardness Nutrition 0.000 description 10
230000002542 deteriorative effect Effects 0.000 description 9
239000002436 steel type Substances 0.000 description 9
229910000831 Steel Inorganic materials 0.000 description 8
229910001566 austenite Inorganic materials 0.000 description 8
230000015572 biosynthetic process Effects 0.000 description 8
239000000463 material Substances 0.000 description 8
239000010959 steel Substances 0.000 description 8
239000010936 titanium Substances 0.000 description 8
238000005275 alloying Methods 0.000 description 7
230000007547 defect Effects 0.000 description 7
238000005098 hot rolling Methods 0.000 description 7
238000004519 manufacturing process Methods 0.000 description 7
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
238000000137 annealing Methods 0.000 description 6
230000007797 corrosion Effects 0.000 description 6
238000005260 corrosion Methods 0.000 description 6
239000000203 mixture Substances 0.000 description 6
238000007711 solidification Methods 0.000 description 6
230000008023 solidification Effects 0.000 description 6
238000000034 method Methods 0.000 description 5
229910001220 stainless steel Inorganic materials 0.000 description 4
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
238000011156 evaluation Methods 0.000 description 3
238000010438 heat treatment Methods 0.000 description 3
229910000765 intermetallic Inorganic materials 0.000 description 3
229910052698 phosphorus Inorganic materials 0.000 description 3
229910052717 sulfur Inorganic materials 0.000 description 3
230000009466 transformation Effects 0.000 description 3
238000004364 calculation method Methods 0.000 description 2
230000000052 comparative effect Effects 0.000 description 2
238000000354 decomposition reaction Methods 0.000 description 2
230000003247 decreasing effect Effects 0.000 description 2
230000006866 deterioration Effects 0.000 description 2
230000000087 stabilizing effect Effects 0.000 description 2
239000010935 stainless steel Substances 0.000 description 2
239000000126 substance Substances 0.000 description 2
238000004381 surface treatment Methods 0.000 description 2
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
239000002253 acid Substances 0.000 description 1
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
229910052782 aluminium Inorganic materials 0.000 description 1
229910052796 boron Inorganic materials 0.000 description 1
238000009749 continuous casting Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
239000007789 gas Substances 0.000 description 1
238000005259 measurement Methods 0.000 description 1
230000008018 melting Effects 0.000 description 1
238000002844 melting Methods 0.000 description 1
238000013508 migration Methods 0.000 description 1
230000005012 migration Effects 0.000 description 1
239000011733 molybdenum Substances 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
239000011574 phosphorus Substances 0.000 description 1
238000005554 pickling Methods 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
239000000047 product Substances 0.000 description 1
239000002994 raw material Substances 0.000 description 1
238000011160 research Methods 0.000 description 1
239000010703 silicon Substances 0.000 description 1
239000007787 solid Substances 0.000 description 1
238000005482 strain hardening Methods 0.000 description 1
239000011593 sulfur Substances 0.000 description 1
238000012360 testing method Methods 0.000 description 1
229910052719 titanium Inorganic materials 0.000 description 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
- C22C38/44—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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
- 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
- C21D8/0273—Final recrystallisation annealing
- 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
- 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
- C22C38/002—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
- C22C38/04—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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
- 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
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
- 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
- C21D2211/001—Austenite

Definitions

Si as a ferrite-stabilizing element, is effective on preventing reduction in formation of a ferrite phase caused by adding C and N.
an excess of Si may promote precipitation of intermetallic compounds such as sigma ( ⁇ ) phase, resulting in deterioration of mechanical properties and corrosion resistance, and therefore the Si content may be controlled to 0.5% or less.
the content of nitrogen (N) is from 0.1 to 0.22%.
the precipitation temperature of the CrN phase may be experimentally evaluated by using a calorimetric evaluation device such as TGA and DSC or derived by numerical calculation using a phase transformation analysis program.

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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)
Heat Treatment Of Sheet Steel (AREA)

EP21894941.0A 2020-11-23 2021-10-29 Acier inoxydable austénitique à haute résistance présentant une excellente aptitude au façonnage à chaud Pending EP4249623A1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
KR1020200158160A KR102463015B1 (ko)	2020-11-23	2020-11-23	열간가공성이 우수한 고강도 오스테나이트계 스테인리스강
PCT/KR2021/015395 WO2022108170A1 (fr)	2020-11-23	2021-10-29	Acier inoxydable austénitique à haute résistance présentant une excellente aptitude au façonnage à chaud

Publications (1)

Publication Number	Publication Date
EP4249623A1 true EP4249623A1 (fr)	2023-09-27

Family

ID=81709241

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP21894941.0A Pending EP4249623A1 (fr)	2020-11-23	2021-10-29	Acier inoxydable austénitique à haute résistance présentant une excellente aptitude au façonnage à chaud

Country Status (6)

Country	Link
US (1)	US20230407443A1 (fr)
EP (1)	EP4249623A1 (fr)
JP (1)	JP2023550424A (fr)
KR (1)	KR102463015B1 (fr)
CN (1)	CN116547402A (fr)
WO (1)	WO2022108170A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH06212365A (ja) *	1993-01-20	1994-08-02	Daido Steel Co Ltd	帯鋸用鋼材およびその製造方法
JP2002173742A (ja) *	2000-12-04	2002-06-21	Nisshin Steel Co Ltd	形状平坦度に優れた高強度オーステナイト系ステンレス鋼帯およびその製造方法
RU2507294C2 (ru) *	2011-11-18	2014-02-20	Сумитомо Метал Индастриз, Лтд.	Аустенитная нержавеющая сталь
FI124993B (fi) *	2012-09-27	2015-04-15	Outokumpu Oy	Austeniittinen ruostumaton teräs
JP6552385B2 (ja) *	2015-11-05	2019-07-31	日鉄ステンレス株式会社	耐熱性と加工性に優れたオーステナイト系ステンレス鋼板とその製造方法、および当該ステンレス鋼製排気部品
KR102030162B1 (ko) *	2016-12-23	2019-11-08	주식회사 포스코	가공성 및 표면특성이 우수한 오스테나이트계 스테인리스강 및 이의 제조방법
KR101923922B1 (ko) *	2016-12-23	2018-11-30	주식회사 포스코	표면특성이 우수한 오스테나이트계 스테인리스강 가공품 및 이의 제조 방법
KR102173302B1 (ko) *	2018-11-12	2020-11-03	주식회사 포스코	비자성 오스테나이트계 스테인리스강 및 그 제조방법

2020
- 2020-11-23 KR KR1020200158160A patent/KR102463015B1/ko active IP Right Grant
2021
- 2021-10-29 JP JP2023530184A patent/JP2023550424A/ja active Pending
- 2021-10-29 EP EP21894941.0A patent/EP4249623A1/fr active Pending
- 2021-10-29 US US18/037,473 patent/US20230407443A1/en active Pending
- 2021-10-29 WO PCT/KR2021/015395 patent/WO2022108170A1/fr active Application Filing
- 2021-10-29 CN CN202180077816.2A patent/CN116547402A/zh active Pending

Also Published As

Publication number	Publication date
JP2023550424A (ja)	2023-12-01
CN116547402A (zh)	2023-08-04
WO2022108170A1 (fr)	2022-05-27
KR102463015B1 (ko)	2022-11-03
US20230407443A1 (en)	2023-12-21
KR20220071005A (ko)	2022-05-31

Legal Events

Date	Code	Title	Description
2022-05-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2023-08-25	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2023-08-25	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2023-09-27	17P	Request for examination filed	Effective date: 20230517
2023-09-27	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2024-02-28	DAV	Request for validation of the european patent (deleted)
2024-02-28	DAX	Request for extension of the european patent (deleted)

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