CA2493523A1 - High strength steel sheet and method for manufacturing same - Google Patents

High strength steel sheet and method for manufacturing same Download PDF

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Publication number
CA2493523A1
CA2493523A1 CA002493523A CA2493523A CA2493523A1 CA 2493523 A1 CA2493523 A1 CA 2493523A1 CA 002493523 A CA002493523 A CA 002493523A CA 2493523 A CA2493523 A CA 2493523A CA 2493523 A1 CA2493523 A1 CA 2493523A1
Authority
CA
Canada
Prior art keywords
steel sheet
less
temperature
high strength
strength steel
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
CA002493523A
Other languages
French (fr)
Other versions
CA2493523C (en
Inventor
Kohei Hasegawa
Saiji Matsuoka
Yasuhide Ishiguro
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.)
JFE Steel Corp
Original Assignee
JFE Steel 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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of CA2493523A1 publication Critical patent/CA2493523A1/en
Application granted granted Critical
Publication of CA2493523C publication Critical patent/CA2493523C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C22C38/02—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
    • 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
    • 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
    • C21D8/0221—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

Abstract

The high strength steel sheet consists essentially of 0.05 to 0.15% C, 0.5% or less Si, 1.00 to 2.00% Mn, 0.09% or less P, 0.01% or less S, 0.005% or less N, 0.01 to 0.1% Sol.Al, and balance of Fe and inevitable impurities; and contains 60% or more polygonal ferrite by volume, and 5 to 30% martensite by volume. The steel sheet is manufactured by the steps of: casting a slab having the specified composition; hot-rolling the slab at Ar3 point or more temperature; beginning cooling the hot-rolled steel sheet within 2 seconds after completing the hot-rolling to a temperature of from 750°C to 600°C at a cooling rate of 150°C/s or more; holding the cooled steel sheet at a temperature between 750°C and 600°C for 2 to 15 seconds; cooling the steel sheet at a cooling rate of 20°C/s or more; and coiling the cooled steel sheet at a temperature of 400°C or less.
CA002493523A 2004-01-29 2005-01-21 High strength steel sheet and method for manufacturing same Expired - Fee Related CA2493523C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004020843 2004-01-29
JP2004-020843 2004-01-29
JP2004326545A JP4470701B2 (en) 2004-01-29 2004-11-10 High-strength thin steel sheet with excellent workability and surface properties and method for producing the same
JP2004-326545 2004-11-10

Publications (2)

Publication Number Publication Date
CA2493523A1 true CA2493523A1 (en) 2005-07-29
CA2493523C CA2493523C (en) 2009-01-27

Family

ID=34656285

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002493523A Expired - Fee Related CA2493523C (en) 2004-01-29 2005-01-21 High strength steel sheet and method for manufacturing same

Country Status (8)

Country Link
US (2) US20050173031A1 (en)
EP (1) EP1559797B1 (en)
JP (1) JP4470701B2 (en)
KR (1) KR100673424B1 (en)
CN (1) CN100439542C (en)
AU (1) AU2005200300C1 (en)
CA (1) CA2493523C (en)
TW (1) TWI277658B (en)

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US11155902B2 (en) * 2006-09-27 2021-10-26 Nucor Corporation High strength, hot dip coated, dual phase, steel sheet and method of manufacturing same
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RU2457912C2 (en) * 2010-11-01 2012-08-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Method of hot rolling of low-alloy sheets
JP5365673B2 (en) 2011-09-29 2013-12-11 Ｊｆｅスチール株式会社 Hot rolled steel sheet with excellent material uniformity and method for producing the same
JP5842515B2 (en) 2011-09-29 2016-01-13 Ｊｆｅスチール株式会社 Hot-rolled steel sheet and manufacturing method thereof
KR101603858B1 (en) 2011-10-06 2016-03-16 신닛테츠스미킨 카부시키카이샤 Steel plate and method for producing same
JP5953952B2 (en) * 2011-11-30 2016-07-20 Ｊｆｅスチール株式会社 Steel material excellent in impact resistance and method for producing the same
KR101678511B1 (en) * 2012-03-07 2016-11-22 제이에프이 스틸 가부시키가이샤 Steel sheet for hot press-forming, method for manufacturing the same, and method for producing hot press-formed parts using the same
CN102719755A (en) * 2012-05-31 2012-10-10 攀钢集团攀枝花钢铁研究院有限公司 High-strength high-processability hot-rolled pickled plate for automobile structures and production method thereof
CN102732794B (en) * 2012-05-31 2014-08-06 攀钢集团攀枝花钢铁研究院有限公司 Hot-rolled pickled plate for Cr-containing automobile structure and production method thereof
CN102912235B (en) * 2012-10-29 2014-11-12 武汉钢铁(集团)公司 Hot-rolled dual-phase steel in 590MPa tensile strength grade and method for manufacturing hot-rolled dual-phase steel
US20160060738A1 (en) * 2013-03-29 2016-03-03 Jfe Steel Corporation Steel structure for hydrogen gas, mehtod for producing hydrogen storage tank, and method for producing hydrogen line pipe (as amended)
CN106715742B (en) 2014-09-17 2019-07-23 日本制铁株式会社 Hot rolled steel plate
BR112017013229A2 (en) 2015-02-20 2018-01-09 Nippon Steel & Sumitomo Metal Corporation Hot-rolled steel product
WO2016132549A1 (en) 2015-02-20 2016-08-25 新日鐵住金株式会社 Hot-rolled steel sheet
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WO2016135898A1 (en) 2015-02-25 2016-09-01 新日鐵住金株式会社 Hot-rolled steel sheet or plate
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JP6004144B1 (en) * 2015-03-06 2016-10-05 Ｊｆｅスチール株式会社 High-strength ERW steel pipe and manufacturing method thereof
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Also Published As

Publication number Publication date
AU2005200300C1 (en) 2008-03-06
AU2005200300A1 (en) 2005-08-18
JP2005240172A (en) 2005-09-08
CN100439542C (en) 2008-12-03
JP4470701B2 (en) 2010-06-02
EP1559797B1 (en) 2013-06-05
EP1559797A1 (en) 2005-08-03
TW200530409A (en) 2005-09-16
US20090223607A1 (en) 2009-09-10
AU2005200300B2 (en) 2007-05-03
CA2493523C (en) 2009-01-27
KR20050077757A (en) 2005-08-03
TWI277658B (en) 2007-04-01
KR100673424B1 (en) 2007-01-24
US20050173031A1 (en) 2005-08-11
CN1648277A (en) 2005-08-03

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