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IN2014DN08577A - - Google Patents

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Publication number
IN2014DN08577A
IN2014DN08577A IN8577DEN2014A IN2014DN08577A IN 2014DN08577 A IN2014DN08577 A IN 2014DN08577A IN 8577DEN2014 A IN8577DEN2014 A IN 8577DEN2014A IN 2014DN08577 A IN2014DN08577 A IN 2014DN08577A
Authority
IN
India
Prior art keywords
phase
grain
excluding
boundary
orientation
Prior art date
Application number
Inventor
Kaori Kawano
Masahito Tasaka
Yoshiaki Nakazawa
Yasuaki Tanaka
Toshiro Tomida
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 IN2014DN08577A publication Critical patent/IN2014DN08577A/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
    • C22C38/04—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
    • C22C38/18—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • 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
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold 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
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • C22C38/06—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
    • 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
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • 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
    • C21D2211/002—Bainite
    • 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
    • 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
    • C21D2211/008—Martensite
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties

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)

Abstract

A steel material that has a chemical composition which contains in terms of mass% 0.05 0.2% excluding 0.05% C 1 3% Mn 0.5 1.8% excluding 0.5% Si 0.01 0.5% Al 0.001 0.015% N more than 0.1% to 0.25% Ti or the sum of V and Ti at least 0.001% Ti 0 0.25% Cr and 0 0.35% Mo with the remainder comprising Fe and impurities and that has a steel structure which is a dual phase structure comprising at least 50% by area main phase comprising ferrite and a second phase comprising one or more constituents selected from the group consisting of bainite martensite and austenite the second phase having an average nanohardness less than 6.0 GPa. In cases when a boundary where the difference in orientation between the crystals is 2º or more is defined as a grain boundary and the region surrounded with this grain boundary is defined as a crystal grain all crystal grains in the main phase and second phase have an average grain diameter of 3 µm or less and the proportion of the length of small angle grain boundaries where the difference in orientation is 2 15º excluding 15º in the length of all grain boundaries is 15% or higher.
IN8577DEN2014 2012-07-20 2013-07-22 IN2014DN08577A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012161730 2012-07-20
PCT/JP2013/069805 WO2014014120A1 (en) 2012-07-20 2013-07-22 Steel material

Publications (1)

Publication Number Publication Date
IN2014DN08577A true IN2014DN08577A (en) 2015-05-22

Family

ID=49948940

Family Applications (1)

Application Number Title Priority Date Filing Date
IN8577DEN2014 IN2014DN08577A (en) 2012-07-20 2013-07-22

Country Status (15)

Country Link
US (1) US10378090B2 (en)
EP (1) EP2876178B1 (en)
JP (1) JP5660250B2 (en)
KR (1) KR20150013891A (en)
CN (1) CN104471094B (en)
BR (1) BR112015000845A2 (en)
CA (1) CA2878685C (en)
ES (1) ES2828084T3 (en)
IN (1) IN2014DN08577A (en)
MX (1) MX2015000770A (en)
PL (1) PL2876178T3 (en)
RU (1) RU2599933C2 (en)
TW (1) TWI484049B (en)
WO (1) WO2014014120A1 (en)
ZA (1) ZA201500132B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3150737B1 (en) * 2014-05-29 2019-09-04 Nippon Steel Corporation Heat-treated steel material and method for producing same
JP6098761B2 (en) * 2014-05-29 2017-03-22 新日鐵住金株式会社 Heat treated steel and method for producing the same
MX2017008622A (en) * 2015-02-20 2017-11-15 Nippon Steel & Sumitomo Metal Corp Hot-rolled steel sheet.
WO2016132549A1 (en) 2015-02-20 2016-08-25 新日鐵住金株式会社 Hot-rolled steel sheet
WO2016135898A1 (en) * 2015-02-25 2016-09-01 新日鐵住金株式会社 Hot-rolled steel sheet or plate
PL3263729T3 (en) 2015-02-25 2020-05-18 Nippon Steel Corporation Hot-rolled steel sheet
TWI570248B (en) * 2015-08-24 2017-02-11 Nippon Steel & Sumitomo Metal Corp Steel plate
EP3409393B1 (en) * 2016-01-28 2021-03-17 Nippon Steel Corporation Panel-shaped molded article used as a door inner panel of a vehicle, vehicle door, and method for manufacturing panel-shaped molded article
US10889879B2 (en) 2016-08-05 2021-01-12 Nippon Steel Corporation Steel sheet and plated steel sheet
JP6354916B2 (en) * 2016-08-05 2018-07-11 新日鐵住金株式会社 Steel plate and plated steel plate
CN109642279B (en) * 2016-08-05 2021-03-09 日本制铁株式会社 Steel sheet and plated steel sheet
BR112019000766B8 (en) * 2016-08-05 2023-03-14 Nippon Steel & Sumitomo Metal Corp STEEL SHEET
CN108396246B (en) * 2017-02-08 2020-09-01 鞍钢股份有限公司 High-carbon steel wire rod and reticular cementite precipitation control method thereof
RU2649887C1 (en) * 2017-05-10 2018-04-05 Акционерное общество "Концерн "Центральный научно-исследовательский институт "Электроприбор" Method for determining coordinates (bearing and remote) and parameters of movement (course and speed) of marine sound-producing target
WO2019092483A1 (en) 2017-11-10 2019-05-16 Arcelormittal Cold rolled and heat treated steel sheet and a method of manufacturing thereof
EP3715492B1 (en) 2017-11-24 2024-05-29 Nippon Steel Corporation Hot-rolled steel sheet and method for producing same
JP6866932B2 (en) * 2017-11-24 2021-04-28 日本製鉄株式会社 Hot-rolled steel sheet and its manufacturing method
JP2020059919A (en) * 2018-10-09 2020-04-16 日本製鉄株式会社 Steel material and manufacturing method thereof

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JP3958842B2 (en) 1997-07-15 2007-08-15 新日本製鐵株式会社 Work-induced transformation-type high-strength steel sheet for absorbing automobile collision energy with excellent dynamic deformation characteristics
JP3352938B2 (en) 1998-03-19 2002-12-03 株式会社神戸製鋼所 High-strength hot-rolled steel sheet excellent in impact resistance and method for producing the same
JP3793350B2 (en) 1998-06-29 2006-07-05 新日本製鐵株式会社 Dual-phase high-strength cold-rolled steel sheet with excellent dynamic deformation characteristics and manufacturing method thereof
KR100441414B1 (en) * 2000-04-21 2004-07-23 신닛뽄세이테쯔 카부시키카이샤 High fatigue strength steel sheet excellent in burring workability and method for producing the same
TWI290177B (en) * 2001-08-24 2007-11-21 Nippon Steel Corp A steel sheet excellent in workability and method for producing the same
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US9970073B2 (en) * 2010-10-18 2018-05-15 Nippon Steel & Sumitomo Metal Corporation Hot-rolled, cold rolled, and plated steel sheet having improved uniform and local ductility at a high strain rate

Also Published As

Publication number Publication date
WO2014014120A1 (en) 2014-01-23
RU2599933C2 (en) 2016-10-20
CA2878685C (en) 2017-06-06
TW201413009A (en) 2014-04-01
TWI484049B (en) 2015-05-11
MX2015000770A (en) 2015-05-07
US10378090B2 (en) 2019-08-13
KR20150013891A (en) 2015-02-05
ZA201500132B (en) 2016-01-27
JPWO2014014120A1 (en) 2016-07-07
EP2876178A4 (en) 2016-04-13
ES2828084T3 (en) 2021-05-25
RU2015105394A (en) 2016-09-10
JP5660250B2 (en) 2015-01-28
CN104471094B (en) 2019-02-26
CA2878685A1 (en) 2014-01-23
EP2876178A1 (en) 2015-05-27
BR112015000845A2 (en) 2017-06-27
PL2876178T3 (en) 2021-01-25
EP2876178B1 (en) 2020-09-16
CN104471094A (en) 2015-03-25
US20150071812A1 (en) 2015-03-12

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