EP3239335A4 - Ferritic stainless steel having excellent ductility and method for manufacturing same - Google Patents

Ferritic stainless steel having excellent ductility and method for manufacturing same Download PDF

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Publication number
EP3239335A4
EP3239335A4 EP15873411.1A EP15873411A EP3239335A4 EP 3239335 A4 EP3239335 A4 EP 3239335A4 EP 15873411 A EP15873411 A EP 15873411A EP 3239335 A4 EP3239335 A4 EP 3239335A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
ferritic stainless
manufacturing same
excellent ductility
ductility
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.)
Granted
Application number
EP15873411.1A
Other languages
German (de)
French (fr)
Other versions
EP3239335A1 (en
EP3239335B1 (en
Inventor
Soo-Ho Park
Jae-Hong Shim
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 EP3239335A1 publication Critical patent/EP3239335A1/en
Publication of EP3239335A4 publication Critical patent/EP3239335A4/en
Application granted granted Critical
Publication of EP3239335B1 publication Critical patent/EP3239335B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/002—Stainless steels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • 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
    • 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
    • C22C38/02—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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C21D2211/004—Dispersions; Precipitations
    • 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

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 Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Continuous Casting (AREA)
EP15873411.1A 2014-12-26 2015-04-30 Ferritic stainless steel having excellent ductility and method for manufacturing same Active EP3239335B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20140190545 2014-12-26
PCT/KR2015/004410 WO2016104883A1 (en) 2014-12-26 2015-04-30 Ferritic stainless steel material having superb ductility and method for producing same

Publications (3)

Publication Number Publication Date
EP3239335A1 EP3239335A1 (en) 2017-11-01
EP3239335A4 true EP3239335A4 (en) 2017-11-29
EP3239335B1 EP3239335B1 (en) 2019-11-13

Family

ID=54248455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15873411.1A Active EP3239335B1 (en) 2014-12-26 2015-04-30 Ferritic stainless steel having excellent ductility and method for manufacturing same

Country Status (7)

Country Link
US (1) US20170283894A1 (en)
EP (1) EP3239335B1 (en)
JP (1) JP6605032B2 (en)
KR (1) KR101553607B1 (en)
CN (1) CN107109598B (en)
ES (1) ES2767505T3 (en)
WO (1) WO2016104883A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6022097B1 (en) * 2016-03-30 2016-11-09 日新製鋼株式会社 Ti-containing ferritic stainless steel sheet and manufacturing method
KR101835021B1 (en) * 2016-09-28 2018-03-09 주식회사 포스코 Ferritic stainless steel for exhaust system heat exchanger and method of manufacturing the same
KR102020511B1 (en) 2017-12-14 2019-09-10 주식회사 포스코 Ferritic stainless steel with excellent impact toughness and manufacturing method thereof
KR102123665B1 (en) * 2018-10-23 2020-06-18 주식회사 포스코 High-strength ferritic stainless steel for clamp and method for manufacturing the same
CN109648064B (en) * 2019-01-25 2021-04-20 北京科技大学 Method for realizing sigma phase transformation of super austenitic stainless steel solidification structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09287021A (en) * 1996-04-19 1997-11-04 Nippon Steel Corp Production of high purity ferritic stainless hot rolled steel strip excellent in workability
JP2000144342A (en) * 1998-01-30 2000-05-26 Sumitomo Metal Ind Ltd Ferritic stainless steel and ferritic stainless steel slab excellent in formability
EP1514949A1 (en) * 2002-06-17 2005-03-16 JFE Steel Corporation FERRITIC STAINLESS STEEL PLATE WITH Ti AND METHOD FOR PRODUCTION THEREOF

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889566A (en) * 1987-06-18 1989-12-26 Kawasaki Steel Corporation Method for producing cold rolled steel sheets having improved spot weldability
JP3422871B2 (en) * 1995-04-11 2003-06-30 新日本製鐵株式会社 Ferritic stainless steel with excellent weldability
JP2005307234A (en) * 2004-04-19 2005-11-04 Nisshin Steel Co Ltd Ferritic stainless steel sheet having excellent ridging resistance and surface characteristic and method for manufacturing the same
JP5219689B2 (en) * 2008-08-12 2013-06-26 新日鐵住金ステンレス株式会社 Ferritic stainless steel sheet with low surface roughness and manufacturing method thereof
JP5560578B2 (en) * 2009-03-31 2014-07-30 Ｊｆｅスチール株式会社 Ferritic stainless steel cold-rolled steel sheet excellent in workability and manufacturing method thereof
JP5707671B2 (en) * 2009-03-31 2015-04-30 Ｊｆｅスチール株式会社 Nb-added ferritic stainless steel sheet excellent in workability and manufacturability and method for producing the same
CN102041452A (en) * 2009-10-23 2011-05-04 宝山钢铁股份有限公司 Medium chromium ferrite stainless steel and making method thereof
JP5307170B2 (en) * 2011-02-25 2013-10-02 新日鐵住金ステンレス株式会社 Manufacturing method of ferritic stainless steel sheet with excellent formability with less rough processing
US20140294660A1 (en) * 2011-12-09 2014-10-02 Nippon Steel & Sumikin Stainless Steel Corporation Hot-rolled ferritic stainless steel sheet with excellent cold cracking resistance and manufacturing process therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09287021A (en) * 1996-04-19 1997-11-04 Nippon Steel Corp Production of high purity ferritic stainless hot rolled steel strip excellent in workability
JP2000144342A (en) * 1998-01-30 2000-05-26 Sumitomo Metal Ind Ltd Ferritic stainless steel and ferritic stainless steel slab excellent in formability
EP1514949A1 (en) * 2002-06-17 2005-03-16 JFE Steel Corporation FERRITIC STAINLESS STEEL PLATE WITH Ti AND METHOD FOR PRODUCTION THEREOF

Also Published As

Publication number Publication date
EP3239335A1 (en) 2017-11-01
KR101553607B1 (en) 2015-09-17
ES2767505T3 (en) 2020-06-17
JP2018505308A (en) 2018-02-22
JP6605032B2 (en) 2019-11-13
CN107109598A (en) 2017-08-29
WO2016104883A1 (en) 2016-06-30
US20170283894A1 (en) 2017-10-05
EP3239335B1 (en) 2019-11-13
CN107109598B (en) 2018-09-14
WO2016104883A8 (en) 2017-01-19

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