IN2014DN11227A - - Google Patents

Info

Publication number
IN2014DN11227A
IN2014DN11227A IN11227DEN2014A IN2014DN11227A IN 2014DN11227 A IN2014DN11227 A IN 2014DN11227A IN 11227DEN2014 A IN11227DEN2014 A IN 11227DEN2014A IN 2014DN11227 A IN2014DN11227 A IN 2014DN11227A
Authority
IN
India
Prior art keywords
less
limited
angle
boundaries
grain boundaries
Prior art date
Application number
Inventor
Yukiko Kobayashi
Eisaku Sakurada
Kunio Hayashi
Original Assignee
Nippon Steel & Sumitomo Metal Corp
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 Nippon Steel & Sumitomo Metal Corp filed Critical Nippon Steel & Sumitomo Metal Corp
Publication of IN2014DN11227A publication Critical patent/IN2014DN11227A/en

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
    • C22C38/04—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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing 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
    • 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
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • 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
    • C22C38/06—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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/05—Grain orientation
    • 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

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 Sheet Steel (AREA)

Abstract

Provided is a high-strength hot-rolled steel sheet containing, by mass %, C: 0.050 to 0.200%, Si: 0.01 to 1.5%, Mn: 1.0 to 3.0%, B: 0.0002 to 0.0030%, Ti: 0.03 to 0.20%, P: limited to 0.05% or less, S: limited to 0.005% or less, Al: limited to 0.5% or less, N: limited to 0.009% or less, and one or more of Nb: 0.01 to 0.20%, V: 0.01 to 0.20%, and Mo: 0.01 to 0.20%, with the balance being con~posed of Fe and inevitable impurities. In the high-strength hot-rolled steel sheet, a ratio of a letlgth of small-angle crystal grain boundaries that are boundaries having a crystal orientation angle of 5' or more but less than 15' to a length of large-angle crystal grain boundaries that are boundaries having a crystal orientation angle of 15' or more is 1 : 1 to 1 : 4, an total segregation amount of C and B in the large-angle grain boundaries is 4 to 20 atoms/m2, tcllsile strength is 850 MPa or higher, and a hole expansion ratio is 25% or more.
IN11227DEN2014 2012-06-26 2013-06-24 IN2014DN11227A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012142692 2012-06-26
PCT/JP2013/067229 WO2014002941A1 (en) 2012-06-26 2013-06-24 High-strength hot-rolled steel sheet and process for producing same

Publications (1)

Publication Number Publication Date
IN2014DN11227A true IN2014DN11227A (en) 2015-10-02

Family

ID=49783087

Family Applications (1)

Application Number Title Priority Date Filing Date
IN11227DEN2014 IN2014DN11227A (en) 2012-06-26 2013-06-24

Country Status (12)

Country Link
US (1) US9803266B2 (en)
EP (1) EP2865778B1 (en)
JP (1) JP6019117B2 (en)
KR (1) KR101706478B1 (en)
CN (1) CN104395490B (en)
BR (1) BR112014031739B1 (en)
ES (1) ES2663995T3 (en)
IN (1) IN2014DN11227A (en)
MX (1) MX353735B (en)
PL (1) PL2865778T3 (en)
TW (1) TWI471426B (en)
WO (1) WO2014002941A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016132549A1 (en) 2015-02-20 2016-08-25 新日鐵住金株式会社 Hot-rolled steel sheet
CN107208209B (en) 2015-02-20 2019-04-16 新日铁住金株式会社 Hot rolled steel plate
WO2016135898A1 (en) 2015-02-25 2016-09-01 新日鐵住金株式会社 Hot-rolled steel sheet or plate
ES2769224T3 (en) 2015-02-25 2020-06-25 Nippon Steel Corp Hot rolled steel sheet
WO2018026014A1 (en) * 2016-08-05 2018-02-08 新日鐵住金株式会社 Steel sheet and plated steel sheet
EP3495530A4 (en) * 2016-08-05 2020-01-08 Nippon Steel Corporation STEEL SHEET AND PLATED STEEL SHEET
TWI629367B (en) * 2016-08-05 2018-07-11 日商新日鐵住金股份有限公司 Steel plate and plated steel
BR112019001331B8 (en) * 2016-08-05 2023-10-10 Nippon Steel & Sumitomo Metal Corp Steel sheet
US20200123630A1 (en) * 2017-02-10 2020-04-23 Tata Steel Limited Hot Rolled Precipitation Strengthened and Grain Refined High Strength Dual Phase Steel Sheet Possessing 600 MPa Minimum Tensile Strength and a Process Thereof
CN108130480A (en) * 2017-12-07 2018-06-08 安徽科汇钢结构工程有限公司 A kind of high hot rolled steel plate of toughness
CN111074148B (en) * 2018-10-19 2022-03-18 宝山钢铁股份有限公司 800 MPa-level hot stamping axle housing steel and manufacturing method thereof
WO2020169411A1 (en) * 2019-02-18 2020-08-27 Tata Steel Nederland Technology B.V. Tube section for evacuated tube transport system
EP3936628A4 (en) * 2019-03-06 2022-10-26 Nippon Steel Corporation Hot rolled steel sheet
WO2021187238A1 (en) * 2020-03-19 2021-09-23 日本製鉄株式会社 Steel sheet

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1036917A (en) 1996-07-25 1998-02-10 Nippon Steel Corp Manufacturing method of high strength hot rolled steel sheet with excellent stretch flangeability
JP3601387B2 (en) 1999-12-15 2004-12-15 Ｊｆｅスチール株式会社 High-strength hot-rolled steel sheet excellent in workability and fatigue characteristics and method for producing the same
JP3636112B2 (en) * 2001-08-07 2005-04-06 Ｊｆｅスチール株式会社 High-tensile hot-rolled steel sheet and high-tensile plated steel sheet with excellent bake hardenability
JP2004315857A (en) 2003-04-14 2004-11-11 Nippon Steel Corp High strength hot rolled steel sheet excellent in punching workability and method for producing the same
JP4460343B2 (en) 2004-04-13 2010-05-12 新日本製鐵株式会社 High-strength hot-rolled steel sheet excellent in punching workability and manufacturing method thereof
US8337643B2 (en) * 2004-11-24 2012-12-25 Nucor Corporation Hot rolled dual phase steel sheet
JP4661306B2 (en) 2005-03-29 2011-03-30 Ｊｆｅスチール株式会社 Manufacturing method of ultra-high strength hot-rolled steel sheet
CN101443467B (en) * 2006-05-16 2011-11-09 杰富意钢铁株式会社 High-strength hot-rolled steel sheet having excellent elongation properties, stretch flange properties, and tensile fatigue properties, and method for producing same
PL2130938T3 (en) * 2007-03-27 2018-11-30 Nippon Steel & Sumitomo Metal Corporation High-strength hot rolled steel sheet being free from peeling and excellent in surface and burring properties and process for manufacturing the same
JP4879808B2 (en) 2007-04-13 2012-02-22 新日本製鐵株式会社 High-strength hot-rolled steel sheet excellent in punching workability and manufacturing method thereof
JP5087980B2 (en) * 2007-04-20 2012-12-05 新日本製鐵株式会社 High-strength hot-rolled steel sheet excellent in punching workability and manufacturing method thereof
JP5423191B2 (en) * 2009-07-10 2014-02-19 Ｊｆｅスチール株式会社 High strength steel plate and manufacturing method thereof
JP4978741B2 (en) * 2010-05-31 2012-07-18 Ｊｆｅスチール株式会社 High-strength hot-rolled steel sheet excellent in stretch flangeability and fatigue resistance and method for producing the same
JP5402848B2 (en) 2010-06-17 2014-01-29 新日鐵住金株式会社 High-strength hot-rolled steel sheet excellent in burring properties and method for producing the same
JP5765080B2 (en) 2010-06-25 2015-08-19 Ｊｆｅスチール株式会社 High-strength hot-rolled steel sheet excellent in stretch flangeability and manufacturing method thereof
JP5724267B2 (en) 2010-09-17 2015-05-27 Ｊｆｅスチール株式会社 High-strength hot-rolled steel sheet excellent in punching workability and manufacturing method thereof

Also Published As

Publication number Publication date
EP2865778A4 (en) 2016-03-16
US9803266B2 (en) 2017-10-31
EP2865778B1 (en) 2018-01-31
US20150159244A1 (en) 2015-06-11
CN104395490B (en) 2017-03-08
TWI471426B (en) 2015-02-01
PL2865778T3 (en) 2018-06-29
JP6019117B2 (en) 2016-11-02
KR20150023699A (en) 2015-03-05
EP2865778A1 (en) 2015-04-29
MX353735B (en) 2018-01-26
KR101706478B1 (en) 2017-02-13
MX2014015218A (en) 2015-03-05
WO2014002941A1 (en) 2014-01-03
TW201410880A (en) 2014-03-16
BR112014031739A2 (en) 2017-06-27
CN104395490A (en) 2015-03-04
ES2663995T3 (en) 2018-04-17
BR112014031739B1 (en) 2019-05-28
JPWO2014002941A1 (en) 2016-05-30

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