EP3872209A4 - Acier non magnétique à haute résistance et ductilité élevée ayant une excellente soudabilité, et son procédé de fabrication - Google Patents

Acier non magnétique à haute résistance et ductilité élevée ayant une excellente soudabilité, et son procédé de fabrication Download PDF

Info

Publication number
EP3872209A4
EP3872209A4 EP19875440.0A EP19875440A EP3872209A4 EP 3872209 A4 EP3872209 A4 EP 3872209A4 EP 19875440 A EP19875440 A EP 19875440A EP 3872209 A4 EP3872209 A4 EP 3872209A4
Authority
EP
European Patent Office
Prior art keywords
ductility
strength
manufacturing
method therefor
excellent weldability
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
EP19875440.0A
Other languages
German (de)
English (en)
Other versions
EP3872209A1 (fr
Inventor
Dong-Ho Lee
Sung-Kyu Kim
Un-Hae LEE
Sang-Deok Kang
Sang-Ho Han
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 EP3872209A4 publication Critical patent/EP3872209A4/fr
Publication of EP3872209A1 publication Critical patent/EP3872209A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • 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
    • 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
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • 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
    • C22C38/02—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
    • C22C38/06—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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite

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)
EP19875440.0A 2018-10-25 2019-10-25 Acier non magnétique à haute résistance et ductilité élevée ayant une excellente soudabilité, et son procédé de fabrication Pending EP3872209A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180128433A KR102119962B1 (ko) 2018-10-25 2018-10-25 용접성이 우수한 고강도 및 고연성 비자성 강재 및 이의 제조방법
PCT/KR2019/014166 WO2020085849A1 (fr) 2018-10-25 2019-10-25 Acier non magnétique à haute résistance et ductilité élevée ayant une excellente soudabilité, et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP3872209A4 true EP3872209A4 (fr) 2021-09-01
EP3872209A1 EP3872209A1 (fr) 2021-09-01

Family

ID=70331661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19875440.0A Pending EP3872209A1 (fr) 2018-10-25 2019-10-25 Acier non magnétique à haute résistance et ductilité élevée ayant une excellente soudabilité, et son procédé de fabrication

Country Status (4)

Country Link
EP (1) EP3872209A1 (fr)
KR (1) KR102119962B1 (fr)
CN (1) CN112888803A (fr)
WO (1) WO2020085849A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240827A (en) * 1977-12-12 1980-12-23 Sumitomo Metal Industries Ltd. Nonmagnetic alloy steel having improved machinability
JPS57200543A (en) * 1981-06-01 1982-12-08 Kawasaki Steel Corp Extremely low temp. high manganese non-magnetic steel
JP2007126715A (ja) * 2005-11-04 2007-05-24 Sumitomo Metal Ind Ltd 高Ｍｎ鋼材及びその製造方法
US20130209831A1 (en) * 2010-07-02 2013-08-15 Thyssenkrupp Steel Europe Ag High-Strength, Cold-Formable Steel and Flat Steel Product Made from Such a Steel
US20150211088A1 (en) * 2011-12-23 2015-07-30 Posco Non-magnetic high manganese steel sheet with high strength and manufacturing method thereof
KR20160078840A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 항복 강도 및 성형성이 우수한 고강도 고망간강 및 그 제조방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110757A (en) * 1979-02-16 1980-08-26 Daido Steel Co Ltd High strength, nonmagnetic, high manganese steel
JPS621823A (ja) * 1985-06-25 1987-01-07 Kobe Steel Ltd 被削性にすぐれた高Ｍｎ非磁性鋼の製造方法
JPH02104633A (ja) * 1989-07-28 1990-04-17 Daido Steel Co Ltd 高強度非磁性高マンガン鋼
JPH0742549B2 (ja) * 1990-09-28 1995-05-10 新日本製鐵株式会社 リニアモーターカー鋼橋用高Ｍｎ非磁性鋼
JP3182995B2 (ja) * 1993-10-15 2001-07-03 株式会社神戸製鋼所 耐応力腐食割れ性および機械的性質の優れた高Ｍｎ非磁性鋼
KR100985286B1 (ko) * 2007-12-28 2010-10-04 주식회사 포스코 내지연파괴 특성이 우수한 고강도 고망간강 및 제조방법
JP2013023742A (ja) * 2011-07-22 2013-02-04 Kobe Steel Ltd 非磁性鋼線材又は棒鋼
JP6693217B2 (ja) * 2015-04-02 2020-05-13 日本製鉄株式会社 極低温用高Ｍｎ鋼材

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240827A (en) * 1977-12-12 1980-12-23 Sumitomo Metal Industries Ltd. Nonmagnetic alloy steel having improved machinability
JPS57200543A (en) * 1981-06-01 1982-12-08 Kawasaki Steel Corp Extremely low temp. high manganese non-magnetic steel
JP2007126715A (ja) * 2005-11-04 2007-05-24 Sumitomo Metal Ind Ltd 高Ｍｎ鋼材及びその製造方法
US20130209831A1 (en) * 2010-07-02 2013-08-15 Thyssenkrupp Steel Europe Ag High-Strength, Cold-Formable Steel and Flat Steel Product Made from Such a Steel
US20150211088A1 (en) * 2011-12-23 2015-07-30 Posco Non-magnetic high manganese steel sheet with high strength and manufacturing method thereof
KR20160078840A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 항복 강도 및 성형성이 우수한 고강도 고망간강 및 그 제조방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020085849A1 *

Also Published As

Publication number Publication date
KR20200046799A (ko) 2020-05-07
KR102119962B1 (ko) 2020-06-05
CN112888803A (zh) 2021-06-01
EP3872209A1 (fr) 2021-09-01
WO2020085849A8 (fr) 2020-10-08
WO2020085849A1 (fr) 2020-04-30

Similar Documents

Publication Publication Date Title
EP3757243A4 (fr) Tôle d'acier galvanisée à résistance élevée, élément à résistance élevée et leurs procédés de fabrication
EP3581670A4 (fr) Plaque d'acier à haute résistance et son procédé de fabrication
EP3770292A4 (fr) Tôle d'acier laminée à froid à ténacité élevée et son procédé de fabrication
EP3875623A4 (fr) Tôle d'acier à haute résistance et son procédé de fabrication
EP3719157A4 (fr) Tôle d'acier galvanisée à résistance élevée et son procédé de fabrication
EP3778974A4 (fr) Tôle d'acier à haute résistance et son procédé de fabrication
EP3392363A4 (fr) Tôle en acier galvanisé à chaud à haute résistance ayant d'excellentes qualité de surface et soudabilité par points, et procédé de fabrication de celle-ci
EP4006190A4 (fr) Feuille d'acier de haute résistance et procédé de fabrication de celle-ci
EP3754043A4 (fr) Tôle en acier galvanisé à haute résistance, élément à haute résistance et leurs procédés de fabrication
EP3533894A4 (fr) Tôle d'acier à haute résistance laminé à froid ayant une résistance à la traction supérieure ou égale à 1500 mpa et une excellente formabilité, et son procédé de fabrication
EP3473742A4 (fr) Tôle d'acier à ductilité élevée et très haute résistance ayant une excellente limite élastique et procédé pour la fabriquer
EP3778973A4 (fr) Tôle d'acier à résistance élevée et procédé de fabrication de ladite tôle d'acier
EP3889298A4 (fr) Acier à haute résistance présentant une excellente durabilité et son procédé de fabrication
EP3971308A4 (fr) Élément à haute résistance, procédé de fabrication d'un élément à haute résistance et procédé de fabrication d'une tôle en acier pour élément à haute résistance
EP3896184A4 (fr) Tôle d'acier à haute résistance ayant d'excellentes aptitude au moulage et résistance aux chocs, et procédé de fabrication de tôle d'acier à haute résistance ayant d'excellentes aptitude au moulage et résistance aux chocs
EP3757242A4 (fr) Tôle d'acier à haute résistance et son procédé de fabrication
EP3828299A4 (fr) Tôle en acier électrozingué hautement résistante et à haute aptitude au pliage, et procédé de fabrication de celle-ci
EP3748029A4 (fr) Tôle d'acier galvanisée à haute résistance, élément à haute résistance et procédés de fabrication associés
EP3885462A4 (fr) Acier à deux phases laminé à froid à rendement élevé et son procédé de fabrication
EP3865600A4 (fr) Acier inoxydable austénitique non magnétique à haute résistance et son procédé de fabrication
EP3822382A4 (fr) Tôle d'acier à haute résistance et procédé pour la fabriquer
EP3889283A4 (fr) Tôle d'acier haute résistance et procédé de fabrication de celle-ci
EP3674435A4 (fr) Tôle d'acier faiblement allié possédant une résistance et une ductilité excellentes et procédé de fabrication s'y rapportant
SG11202108594QA (en) High-mn steel and manufacturing method therefor
EP3828301A4 (fr) Tôle d'acier à haute résistance présentant une excellente propriété de résistance aux chocs et son procédé de fabrication

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: 20210518

A4 Supplementary search report drawn up and despatched

Effective date: 20210706

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)
RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO HOLDINGS INC.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO CO., LTD

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED