WO2020085849A8 - High-strength and high-ductility nonmagnetic steel having excellent weldability, and manufacturing method therefor - Google Patents

High-strength and high-ductility nonmagnetic steel having excellent weldability, and manufacturing method therefor Download PDF

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Publication number
WO2020085849A8
WO2020085849A8 PCT/KR2019/014166 KR2019014166W WO2020085849A8 WO 2020085849 A8 WO2020085849 A8 WO 2020085849A8 KR 2019014166 W KR2019014166 W KR 2019014166W WO 2020085849 A8 WO2020085849 A8 WO 2020085849A8
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WO
WIPO (PCT)
Prior art keywords
ductility
manufacturing
method therefor
nonmagnetic steel
strength
Prior art date
Application number
PCT/KR2019/014166
Other languages
French (fr)
Korean (ko)
Other versions
WO2020085849A1 (en
Inventor
이동호
김성규
이운해
강상덕
한상호
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 EP19875440.0A priority Critical patent/EP3872209A4/en
Priority to CN201980068247.8A priority patent/CN112888803A/en
Publication of WO2020085849A1 publication Critical patent/WO2020085849A1/en
Publication of WO2020085849A8 publication Critical patent/WO2020085849A8/en

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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
    • 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
    • C22C38/02—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

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  • 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)

Abstract

The present invention relates to nonmagnetic steel that can be suitably used for components in which an eddy current occurs, such as a distribution board and a transformer, and, more specifically, to nonmagnetic steel having excellent strength, ductility and weldability, and a manufacturing method therefor.
PCT/KR2019/014166 2018-10-25 2019-10-25 High-strength and high-ductility nonmagnetic steel having excellent weldability, and manufacturing method therefor WO2020085849A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19875440.0A EP3872209A4 (en) 2018-10-25 2019-10-25 High-strength and high-ductility nonmagnetic steel having excellent weldability, and manufacturing method therefor
CN201980068247.8A CN112888803A (en) 2018-10-25 2019-10-25 High-strength, high-ductility, nonmagnetic steel material having excellent weldability and method for producing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180128433A KR102119962B1 (en) 2018-10-25 2018-10-25 High-strength and high-ductility steel having excellent weldability and method for manufacturing thereof
KR10-2018-0128433 2018-10-25

Publications (2)

Publication Number Publication Date
WO2020085849A1 WO2020085849A1 (en) 2020-04-30
WO2020085849A8 true WO2020085849A8 (en) 2020-10-08

Family

ID=70331661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/014166 WO2020085849A1 (en) 2018-10-25 2019-10-25 High-strength and high-ductility nonmagnetic steel having excellent weldability, and manufacturing method therefor

Country Status (4)

Country Link
EP (1) EP3872209A4 (en)
KR (1) KR102119962B1 (en)
CN (1) CN112888803A (en)
WO (1) WO2020085849A1 (en)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481119A (en) * 1977-12-12 1979-06-28 Sumitomo Metal Ind Ltd Nonmagnetic steel excellent in machinability
JPS55110757A (en) * 1979-02-16 1980-08-26 Daido Steel Co Ltd High strength, nonmagnetic, high manganese steel
JPS5942068B2 (en) * 1981-06-01 1984-10-12 川崎製鉄株式会社 High manganese non-magnetic steel for cryogenic temperatures
JPS621823A (en) * 1985-06-25 1987-01-07 Kobe Steel Ltd Manufacture of nonmagnetic high-mn steel having superior machinability
JPH02104633A (en) * 1989-07-28 1990-04-17 Daido Steel Co Ltd High strength and non-magnetic high manganese steel
JPH0742549B2 (en) * 1990-09-28 1995-05-10 新日本製鐵株式会社 High Mn non-magnetic steel for linear motor car steel bridge
JP3182995B2 (en) * 1993-10-15 2001-07-03 株式会社神戸製鋼所 High Mn non-magnetic steel with excellent stress corrosion cracking resistance and mechanical properties
JP4529872B2 (en) * 2005-11-04 2010-08-25 住友金属工業株式会社 High Mn steel material and manufacturing method thereof
KR100985286B1 (en) * 2007-12-28 2010-10-04 주식회사 포스코 High Manganese Steel Having High Strength and Excellent Delayed Fracture Resistance and Manufacturing Method Thereof
EP2402472B2 (en) * 2010-07-02 2017-11-15 ThyssenKrupp Steel Europe AG High-tensile, cold formable steel and flat steel product composed of such steel
JP2013023742A (en) * 2011-07-22 2013-02-04 Kobe Steel Ltd Non-magnetic steel wire material or rod steel
EP2796585B1 (en) * 2011-12-23 2017-09-27 Posco Non-magnetic high manganese steel sheet with high strength and manufacturing method thereof
KR20160078840A (en) * 2014-12-24 2016-07-05 주식회사 포스코 High manganese steel sheet having superior yield strength and fromability, and method for manufacturing the same
JP6693217B2 (en) * 2015-04-02 2020-05-13 日本製鉄株式会社 High Mn steel for cryogenic temperatures

Also Published As

Publication number Publication date
KR102119962B1 (en) 2020-06-05
EP3872209A1 (en) 2021-09-01
WO2020085849A1 (en) 2020-04-30
EP3872209A4 (en) 2021-09-01
CN112888803A (en) 2021-06-01
KR20200046799A (en) 2020-05-07

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