EP4249623A1 - Hochfester austenitischer rostfreier stahl mit ausgezeichneter warmumformbarkeit - Google Patents

Hochfester austenitischer rostfreier stahl mit ausgezeichneter warmumformbarkeit Download PDF

Info

Publication number
EP4249623A1
EP4249623A1 EP21894941.0A EP21894941A EP4249623A1 EP 4249623 A1 EP4249623 A1 EP 4249623A1 EP 21894941 A EP21894941 A EP 21894941A EP 4249623 A1 EP4249623 A1 EP 4249623A1
Authority
EP
European Patent Office
Prior art keywords
less
stainless steel
austenitic stainless
hot workability
formula
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
Application number
EP21894941.0A
Other languages
English (en)
French (fr)
Other versions
EP4249623A4 (de
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.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP4249623A1 publication Critical patent/EP4249623A1/de
Publication of EP4249623A4 publication Critical patent/EP4249623A4/de
Pending legal-status Critical Current

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
    • C22C38/02—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
    • C22C38/18—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
    • 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
    • C21D1/26—Methods of 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and 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
    • C21D6/02—Hardening by precipitation
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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.

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)
  • Heat Treatment Of Sheet Steel (AREA)
EP21894941.0A 2020-11-23 2021-10-29 Hochfester austenitischer rostfreier stahl mit ausgezeichneter warmumformbarkeit Pending EP4249623A4 (de)

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 (ko) 2020-11-23 2021-10-29 열간가공성이 우수한 고강도 오스테나이트계 스테인리스강

Publications (2)

Publication Number Publication Date
EP4249623A1 true EP4249623A1 (de) 2023-09-27
EP4249623A4 EP4249623A4 (de) 2024-10-16

Family

ID=81709241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21894941.0A Pending EP4249623A4 (de) 2020-11-23 2021-10-29 Hochfester austenitischer rostfreier stahl mit ausgezeichneter warmumformbarkeit

Country Status (6)

Country Link
US (1) US20230407443A1 (de)
EP (1) EP4249623A4 (de)
JP (1) JP2023550424A (de)
KR (1) KR102463015B1 (de)
CN (1) CN116547402A (de)
WO (1) WO2022108170A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102497442B1 (ko) * 2020-11-25 2023-02-08 주식회사 포스코 접촉저항이 향상된 고분자 연료전지 분리판용 오스테나이트계 스테인리스강 및 그 제조 방법

Family Cites Families (25)

* 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
JPH07113144A (ja) * 1993-10-18 1995-05-02 Nisshin Steel Co Ltd 表面性状に優れた非磁性ステンレス鋼及びその製造方法
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
CN102510909B (zh) * 2011-11-18 2014-09-03 新日铁住金株式会社 奥氏体系不锈钢
JP2014001422A (ja) * 2012-06-18 2014-01-09 Nippon Steel & Sumitomo Metal オーステナイト系ステンレス鋼板およびその製造方法
FI124993B (fi) * 2012-09-27 2015-04-15 Outokumpu Oy Austeniittinen ruostumaton teräs
KR101779305B1 (ko) * 2013-12-09 2017-09-18 신닛테츠스미킨 카부시키카이샤 오스테나이트계 스테인리스 강판 및 그 제조 방법
JP6095619B2 (ja) * 2014-08-19 2017-03-15 日新製鋼株式会社 オーステナイト系ステンレス鋼板およびメタルガスケット
JP6627343B2 (ja) * 2014-10-07 2020-01-08 日本製鉄株式会社 オーステナイト系ステンレス鋼、及び、高圧水素ガス用機器又は液体水素用機器
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
JP6920420B2 (ja) * 2017-03-31 2021-08-18 日鉄ステンレス株式会社 オーステナイト系ステンレス厚鋼板およびその製造方法
KR20190066734A (ko) * 2017-12-06 2019-06-14 주식회사 포스코 내식성이 우수한 고경도 오스테나이트계 스테인리스강
KR102120700B1 (ko) * 2018-09-13 2020-06-09 주식회사 포스코 확관가공성 및 내시효균열성이 우수한 오스테나이트계 스테인리스강
KR102173302B1 (ko) * 2018-11-12 2020-11-03 주식회사 포스코 비자성 오스테나이트계 스테인리스강 및 그 제조방법
CN113227409B (zh) * 2018-12-28 2023-07-25 日铁不锈钢株式会社 焊接结构物及其制造方法
JP7328504B2 (ja) * 2019-04-17 2023-08-17 日本製鉄株式会社 鋼部品およびその製造方法
KR102326043B1 (ko) * 2019-12-19 2021-11-15 주식회사 포스코 내식성이 우수한 고분자 연료전지 분리판용 스테인리스강
KR102385472B1 (ko) * 2020-04-22 2022-04-13 주식회사 포스코 고강도, 고성형의 저원가 오스테나이트계 스테인리스강 및 그 제조방법
KR102420220B1 (ko) * 2020-05-29 2022-07-13 주식회사 포스코 연료전지 분리판용 스테인리스강
KR102448741B1 (ko) * 2020-08-31 2022-09-30 주식회사 포스코 심가공성이 향상된 오스테나이트계 스테인리스강
KR102448735B1 (ko) * 2020-09-03 2022-09-30 주식회사 포스코 오스테나이트계 스테인리스강 및 그 제조 방법
KR102497442B1 (ko) * 2020-11-25 2023-02-08 주식회사 포스코 접촉저항이 향상된 고분자 연료전지 분리판용 오스테나이트계 스테인리스강 및 그 제조 방법
WO2022145539A1 (ko) * 2020-12-30 2022-07-07 주식회사 포스코 비자성 오스테나이트계 스테인리스강

Also Published As

Publication number Publication date
JP2023550424A (ja) 2023-12-01
CN116547402A (zh) 2023-08-04
US20230407443A1 (en) 2023-12-21
KR20220071005A (ko) 2022-05-31
EP4249623A4 (de) 2024-10-16
WO2022108170A1 (ko) 2022-05-27
KR102463015B1 (ko) 2022-11-03

Similar Documents

Publication Publication Date Title
KR101382912B1 (ko) 켄칭성이 우수한 붕소 첨가 강판 및 제조 방법
JP5335502B2 (ja) 耐食性に優れたマルテンサイト系ステンレス鋼
EP3395980B1 (de) Nicht-magnetisches stahlmaterial mit hervorragender bearbeitbarkeit und herstellungsverfahren dafür
EP2557189B1 (de) Ferrit-edelstahlblech mit hoher wärmebeständigkeit und bearbeitbarkeit sowie herstellungsverfahren dafür
KR20180059548A (ko) 오스테나이트계 스테인리스 강판
EP2834381B1 (de) Kostengünstiger ferritischer edelstahl
EP3722448A1 (de) Stahl mit hohem mn-gehalt und herstellungsverfahren dafür
KR20190045314A (ko) 표면 경화강 및 그 제조 방법 그리고 기어 부품의 제조 방법
EP2890825B1 (de) Rostfreier ferritischer stahl mit einer guten festigkeit bei hohen temperaturen, einer guten oxidationsbeständigkeit und einer guten verformbarkeit
KR20190044689A (ko) 강판
EP3978643A2 (de) Austenitischer rostfreier stahl mit verbesserter festigkeit und verfahren zu seiner herstellung
KR20150074697A (ko) 저 니켈 함유 스테인리스강
JP2022064692A (ja) オーステナイト系ステンレス鋼およびオーステナイト系ステンレス鋼の製造方法
EP3699314A1 (de) Ferritischer rostfreier nutzstahl mit ausgezeichneter warmverformbarkeit und verfahren zu seiner herstellung
US20230287549A1 (en) Austenitic stainless steel with improved deep drawing
EP4249623A1 (de) Hochfester austenitischer rostfreier stahl mit ausgezeichneter warmumformbarkeit
KR20180074322A (ko) 내식성 및 열간가공성이 우수한 오스테나이트계 스테인리스강
EP4119693A1 (de) Kostengünstiger austenitischer edelstahl mit hoher festigkeit und hoher verformbarkeit und verfahren zur herstellung davon
JPH0830253B2 (ja) 加工性に優れた析出硬化型マルテンサイト系ステンレス鋼
KR102326046B1 (ko) 고온 특성 및 성형성이 향상된 저Cr 페라이트계 스테인리스강 및 그 제조방법
JP3001718B2 (ja) フェライト系ステンレス鋼薄肉鋳片の製造方法
JP7174853B2 (ja) 成形性及び高温特性に優れた低Ｃｒフェライト系ステンレス鋼及びその製造方法
JP5168806B2 (ja) 熱間圧延時の耐表面割れ性に優れた薄鋼板及びその製造方法
KR100605678B1 (ko) 내열강도가 우수한 내열 스테인레스강
KR101726075B1 (ko) 내식성이 우수한 저크롬 페라이트계 스테인리스강 및 이의 제조방법

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230517

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20240912

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/26 20060101ALI20240906BHEP

Ipc: C21D 6/02 20060101ALI20240906BHEP

Ipc: C21D 6/00 20060101ALI20240906BHEP

Ipc: C21D 8/02 20060101ALI20240906BHEP

Ipc: C21D 9/46 20060101ALI20240906BHEP

Ipc: C22C 38/54 20060101ALI20240906BHEP

Ipc: C22C 38/50 20060101ALI20240906BHEP

Ipc: C22C 38/06 20060101ALI20240906BHEP

Ipc: C22C 38/04 20060101ALI20240906BHEP

Ipc: C22C 38/02 20060101ALI20240906BHEP

Ipc: C22C 38/00 20060101ALI20240906BHEP

Ipc: C22C 38/42 20060101ALI20240906BHEP

Ipc: C22C 38/44 20060101AFI20240906BHEP