IN2014DN07404A - - Google Patents

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Publication number
IN2014DN07404A
IN2014DN07404A IN7404DEN2014A IN2014DN07404A IN 2014DN07404 A IN2014DN07404 A IN 2014DN07404A IN 7404DEN2014 A IN7404DEN2014 A IN 7404DEN2014A IN 2014DN07404 A IN2014DN07404 A IN 2014DN07404A
Authority
IN
India
Prior art keywords
retained
area
phase
average grain
grain diameter
Prior art date
Application number
Inventor
Kengo Hata
Toshiro Tomida
Norio Imai
Jun Haga
Takuya Nishio
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 IN2014DN07404A publication Critical patent/IN2014DN07404A/en

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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
    • C21D9/46—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
    • 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
    • C21D8/0221—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
    • C21D8/0263—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
    • C22C38/002—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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/12—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
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • 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
    • C21D2211/005—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
    • 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
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • C21D8/0284—Application of a separating or insulating coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]

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

high-strength cold-rolled steel sheet having excellent ductility and stretch flangeability includes: a chemical composition consisting, in mass%, C: 0.06 to 0.3'36, Si: 0.4 to 2.5%, Mn: 0.6 to 3.5%, P: at most 0.1%, S: at most 0.05%, Ti: 0 to 0.08%, Nb: 0 to 0.04%, a total content of Ti and Nb: 0 to 0.10%, sol.Al: 0 to 2.0%, Cr: 0 to l%, Mo: 0 to 0.3%, V: 0 to 0.3%, B: 0 to 0.005%, Ca: 0 to 0.003%, REM: 0 to 0.003% and the remainder of Fe and impurities; a microstructure having a main phase of ferrite which comprising at least 40 area%, and a second phase of a low-temperature transformation phase consisting either or both of martensite and bainite which comprising at least 10 area% in total and retained austenite (y) at least which comprising 3 area%, and an average grain diameter of ferrite having a tilt angle of at least 15° is at most 5.0 µm, an average grain diameter of the low-temperature transformation-produced phase is at most 2.0 µm, an average grain diameter of lump-like retained y having an aspect ratio of less than 5 is at most 1.5 µm, and an area fraction of the lump-like retained y relative to all the retained y is at least 50%.
IN7404DEN2014 2012-02-22 2013-02-13 IN2014DN07404A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012036475 2012-02-22
PCT/JP2013/053313 WO2013125400A1 (en) 2012-02-22 2013-02-13 Cold-rolled steel sheet and manufacturing method for same

Publications (1)

Publication Number Publication Date
IN2014DN07404A true IN2014DN07404A (en) 2015-04-24

Family

ID=49005587

Family Applications (1)

Application Number Title Priority Date Filing Date
IN7404DEN2014 IN2014DN07404A (en) 2012-02-22 2013-02-13

Country Status (12)

Country Link
US (2) US9580767B2 (en)
EP (1) EP2818569B1 (en)
JP (1) JP5590244B2 (en)
KR (1) KR101609969B1 (en)
CN (1) CN104245988B (en)
BR (1) BR112014020567B1 (en)
ES (1) ES2673111T3 (en)
IN (1) IN2014DN07404A (en)
MX (1) MX356409B (en)
PL (1) PL2818569T3 (en)
TW (1) TWI515305B (en)
WO (1) WO2013125400A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN201617022707A (en) 2014-01-06 2016-08-31 Nippon Steel & Sumitomo Metal Corp
BR112016014435A2 (en) 2014-01-06 2017-08-08 Nippon Steel & Sumitomo Metal Corp STEEL MATERIAL AND PROCESS FOR MANUFACTURING THE SAME
JP6256184B2 (en) * 2014-05-12 2018-01-10 Ｊｆｅスチール株式会社 Manufacturing method of high-strength steel sheet
JP6379716B2 (en) * 2014-06-23 2018-08-29 新日鐵住金株式会社 Cold-rolled steel sheet and manufacturing method thereof
ES2770038T3 (en) * 2015-02-24 2020-06-30 Nippon Steel Corp Cold rolled steel sheet and method for its manufacture
WO2016143270A1 (en) * 2015-03-06 2016-09-15 Ｊｆｅスチール株式会社 High strength electric resistance welded steel pipe and manufacturing method therefor
SE539519C2 (en) 2015-12-21 2017-10-03 High strength galvannealed steel sheet and method of producing such steel sheet
JP7094665B2 (en) * 2017-06-13 2022-07-04 キヤノン株式会社 Recording device and recording control method
CN111936657B (en) * 2018-03-30 2021-11-02 杰富意钢铁株式会社 High-strength steel sheet and method for producing same
JP6705562B2 (en) * 2018-03-30 2020-06-03 Ｊｆｅスチール株式会社 High-strength steel sheet and method for manufacturing the same
MX2020010211A (en) * 2018-03-30 2020-11-09 Jfe Steel Corp High-strength sheet steel and method for manufacturing same.
CN108588565B (en) * 2018-06-14 2021-01-05 北京工业大学 Aluminum-containing high-boron high-speed steel roller material and manufacturing method thereof
CN113166838B (en) * 2019-04-08 2024-05-24 日本制铁株式会社 Cold-rolled steel sheet and method for producing same
CN114667662B (en) * 2019-11-15 2024-10-01 日本制铁株式会社 Rotor core, rotor, and rotating electrical machine
KR20220156645A (en) * 2020-04-07 2022-11-25 닛폰세이테츠 가부시키가이샤 steel plate
JP7417165B2 (en) * 2020-07-20 2024-01-18 日本製鉄株式会社 Steel plate and its manufacturing method
CN117098867A (en) * 2021-03-31 2023-11-21 日本制铁株式会社 Steel sheet, method for producing steel sheet, and method for producing intermediate steel sheet
JP7541653B1 (en) * 2023-01-26 2024-08-29 Ｊｆｅスチール株式会社 Steel plates and members, and their manufacturing methods
JP7616491B1 (en) * 2023-03-31 2025-01-17 Ｊｆｅスチール株式会社 Steel plates, components and their manufacturing methods

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JP3749615B2 (en) * 1998-03-31 2006-03-01 新日本製鐵株式会社 High-strength cold-rolled steel sheet for work with excellent fatigue characteristics and method for producing the same
US6395108B2 (en) * 1998-07-08 2002-05-28 Recherche Et Developpement Du Groupe Cockerill Sambre Flat product, such as sheet, made of steel having a high yield strength and exhibiting good ductility and process for manufacturing this product
JP4062118B2 (en) * 2002-03-22 2008-03-19 Ｊｆｅスチール株式会社 High-tensile hot-rolled steel sheet with excellent stretch characteristics and stretch flange characteristics and manufacturing method thereof
CN100434557C (en) * 2004-02-10 2008-11-19 鞍山钢铁集团公司 Production process of low-carbon high-strength composite reinforced ultra-fine grain hot-rolled wire rod
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JP5320681B2 (en) 2007-03-19 2013-10-23 Ｊｆｅスチール株式会社 High strength cold rolled steel sheet and method for producing high strength cold rolled steel sheet
JP5151246B2 (en) * 2007-05-24 2013-02-27 Ｊｆｅスチール株式会社 High-strength cold-rolled steel sheet and high-strength hot-dip galvanized steel sheet excellent in deep drawability and strength-ductility balance and manufacturing method thereof
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JP4737319B2 (en) * 2009-06-17 2011-07-27 Ｊｆｅスチール株式会社 High-strength galvannealed steel sheet with excellent workability and fatigue resistance and method for producing the same
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JP5549238B2 (en) * 2010-01-22 2014-07-16 新日鐵住金株式会社 Cold rolled steel sheet and method for producing the same
JP5488129B2 (en) * 2010-03-31 2014-05-14 新日鐵住金株式会社 Cold rolled steel sheet and method for producing the same
EP2604715B1 (en) * 2010-08-12 2019-12-11 JFE Steel Corporation Method for manufacturing a high-strength cold-rolled steel sheet having excellent formability and crashworthiness

Also Published As

Publication number Publication date
US9580767B2 (en) 2017-02-28
KR101609969B1 (en) 2016-04-06
MX356409B (en) 2018-05-24
MX2014009994A (en) 2015-02-20
CN104245988A (en) 2014-12-24
US20150037610A1 (en) 2015-02-05
ES2673111T3 (en) 2018-06-19
TW201400626A (en) 2014-01-01
BR112014020567B1 (en) 2019-03-26
US10407749B2 (en) 2019-09-10
PL2818569T3 (en) 2018-09-28
JPWO2013125400A1 (en) 2015-07-30
JP5590244B2 (en) 2014-09-17
CN104245988B (en) 2016-07-06
EP2818569B1 (en) 2018-05-02
KR20140129209A (en) 2014-11-06
EP2818569A1 (en) 2014-12-31
EP2818569A4 (en) 2015-12-30
WO2013125400A1 (en) 2013-08-29
TWI515305B (en) 2016-01-01
US20170121788A1 (en) 2017-05-04

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