CA2422352A1 - Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same - Google Patents

Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same Download PDF

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Publication number
CA2422352A1
CA2422352A1 CA002422352A CA2422352A CA2422352A1 CA 2422352 A1 CA2422352 A1 CA 2422352A1 CA 002422352 A CA002422352 A CA 002422352A CA 2422352 A CA2422352 A CA 2422352A CA 2422352 A1 CA2422352 A1 CA 2422352A1
Authority
CA
Canada
Prior art keywords
cold
steel sheet
rolled steel
grain structure
manufacturing
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
CA002422352A
Other languages
French (fr)
Other versions
CA2422352C (en
Inventor
Tetsuo Mochida
Kazuhiro Seto
Kei Sakata
Tomohisa Oonishi
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
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of CA2422352A1 publication Critical patent/CA2422352A1/en
Application granted granted Critical
Publication of CA2422352C publication Critical patent/CA2422352C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • 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

Abstract

A cold-rolled steel sheet having an ultrafine grain structure including a ferrite phase is provided. The cold-rolled steel sheet contains C, Si, Mn, N, Ti, Nb, Al, P, S, N and Fe and incidental impurities. The ferrite phase has a content of 65 percent by volume or more and an average grain size of 3.5 µ m or less.
CA002422352A 2002-03-29 2003-03-14 Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same Expired - Fee Related CA2422352C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002094065 2002-03-29
JP2002-94065 2002-03-29
JP2002224617 2002-08-01
JP2002-224617 2002-08-01

Publications (2)

Publication Number Publication Date
CA2422352A1 true CA2422352A1 (en) 2003-09-29
CA2422352C CA2422352C (en) 2009-08-18

Family

ID=28677573

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002422352A Expired - Fee Related CA2422352C (en) 2002-03-29 2003-03-14 Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same

Country Status (8)

Country Link
US (1) US6638371B1 (en)
EP (1) EP1354972B1 (en)
KR (2) KR100949694B1 (en)
CN (1) CN1252302C (en)
AU (1) AU2003203552B2 (en)
CA (1) CA2422352C (en)
DE (1) DE60300835T2 (en)
TW (1) TWI288782B (en)

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JP4235030B2 (en) * 2003-05-21 2009-03-04 新日本製鐵株式会社 High-strength cold-rolled steel sheet and high-strength surface-treated steel sheet having excellent local formability and a tensile strength of 780 MPa or more with suppressed increase in hardness of the weld
CN100434557C (en) * 2004-02-10 2008-11-19 鞍山钢铁集团公司 Low-carbon high-strength hot rolling wire with compound reinforced ultrafine grains and its production process
JP4639996B2 (en) * 2004-07-06 2011-02-23 住友金属工業株式会社 Manufacturing method of high-tensile cold-rolled steel sheet
JP4681290B2 (en) * 2004-12-03 2011-05-11 本田技研工業株式会社 High strength steel plate and manufacturing method thereof
CN101238233B (en) * 2005-08-03 2012-11-28 住友金属工业株式会社 Hot-rolled steel sheet and cold-rolled steel sheet and manufacturing method thereof
EP2039791B1 (en) * 2006-06-01 2011-07-06 Honda Motor Co., Ltd. High-strength steel sheet and process for producing the same
JP5326403B2 (en) * 2007-07-31 2013-10-30 Ｊｆｅスチール株式会社 High strength steel plate
CA2720702C (en) 2008-04-10 2014-08-12 Nippon Steel Corporation High-strength steel sheet and galvanized steel sheet having very good balance between hole expansibility and ductility, and also excellent in fatigue resistance, and methods of producing the steel sheets
EP2310544B1 (en) * 2008-07-11 2018-10-17 Aktiebolaget SKF A method for manufacturing a bearing component
US8128762B2 (en) * 2008-08-12 2012-03-06 Kobe Steel, Ltd. High-strength steel sheet superior in formability
CN101352723B (en) * 2008-08-20 2010-12-22 秦皇岛首秦金属材料有限公司 Medium plate flexible rolling method
JP4962527B2 (en) * 2009-04-28 2012-06-27 Ｊｆｅスチール株式会社 Cold-rolled steel sheet excellent in formability, shape freezing property, surface appearance, and method for producing the same
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
JP5729211B2 (en) * 2010-08-31 2015-06-03 Ｊｆｅスチール株式会社 Cold rolled steel sheet manufacturing method, cold rolled steel sheet and automobile member
JP5126399B2 (en) * 2010-09-06 2013-01-23 Ｊｆｅスチール株式会社 High-strength cold-rolled steel sheet with excellent stretch flangeability and manufacturing method thereof
WO2012070271A1 (en) * 2010-11-22 2012-05-31 新日本製鐵株式会社 Steel sheet of strain aging hardening type with excellent aging resistance after paint baking and process for producing same
JP5834717B2 (en) * 2011-09-29 2015-12-24 Ｊｆｅスチール株式会社 Hot-dip galvanized steel sheet having a high yield ratio and method for producing the same
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
WO2013115205A1 (en) 2012-01-31 2013-08-08 Ｊｆｅスチール株式会社 Hot-rolled steel for power generator rim and method for manufacturing same
JP5884714B2 (en) * 2012-01-31 2016-03-15 Ｊｆｅスチール株式会社 Hot-dip galvanized steel sheet and manufacturing method thereof
KR101406478B1 (en) * 2012-03-21 2014-06-12 주식회사 포스코 Ultra-high strength cold-rolled steel with high yield ratio and cold developing and manufacturing method thereof
CN102978525B (en) * 2012-11-20 2015-05-27 首钢总公司 Manufacturing method for thin-sized hot-continuous-rolled steel for furniture
CN105624533A (en) * 2016-01-27 2016-06-01 太仓捷公精密金属材料有限公司 Manganese-titanium metal material
DE102016005531A1 (en) * 2016-05-02 2017-11-02 Vladimir Volchkov Low carbon steel
EP3778975A4 (en) * 2018-03-30 2021-02-17 JFE Steel Corporation High-strength steel sheet and production method thereof
KR102166598B1 (en) * 2018-11-26 2020-10-16 현대제철 주식회사 Cold rolled steel sheet and method of manufacturing the same
CN115812054A (en) * 2020-07-03 2023-03-17 日本制铁株式会社 Exterior panel and automobile provided with same
CN114351056A (en) * 2022-01-18 2022-04-15 天津市新天钢钢铁集团有限公司 Low-yield-ratio high-strength steel plate for building structure and production method thereof

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CA1093135A (en) 1977-04-01 1981-01-06 Ted G. Proctor Noise reduction in a permanent magnet synchronous motor
JP2859270B2 (en) 1987-06-11 1999-02-17 旭光学工業株式会社 Camera gaze direction detection device
US4933272A (en) 1988-04-08 1990-06-12 Eastman Kodak Company Photographic emulsions containing internally modified silver halide grains
JPH02301540A (en) 1989-05-15 1990-12-13 Sumitomo Metal Ind Ltd Fine grained ferrite steel
US5074926A (en) * 1989-11-16 1991-12-24 Kawasaki Steel Corp. High tensile cold rolled steel sheet and high tensile hot dip galvanized steel sheet having improved stretch flanging property and process for producing same
DE69130555T3 (en) 1990-08-17 2004-06-03 Jfe Steel Corp. High-strength steel sheet for forming by pressing and processes for producing these sheets
WO1998032889A1 (en) 1997-01-29 1998-07-30 Nippon Steel Corporation High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof
JP3320014B2 (en) 1997-06-16 2002-09-03 川崎製鉄株式会社 High strength, high workability cold rolled steel sheet with excellent impact resistance
US6221179B1 (en) 1997-09-11 2001-04-24 Kawasaki Steel Corporation Hot rolled steel plate to be processed having hyper fine particles, method of manufacturing the same, and method of manufacturing cold rolled steel plate
JP3386726B2 (en) 1997-09-11 2003-03-17 川崎製鉄株式会社 Hot-rolled steel sheet for processing having ultrafine grains, method for producing the same, and method for producing cold-rolled steel sheet
KR100572179B1 (en) * 1999-10-22 2006-04-18 제이에프이 스틸 가부시키가이샤 Hot-dip galvanized steel sheet having high strength and also being excellent in formability and galvanizing property
JP3698046B2 (en) * 1999-10-22 2005-09-21 Ｊｆｅスチール株式会社 High-strength hot-dip galvanized steel sheet excellent in workability and plating property and method for producing the same
CA2387322C (en) 2001-06-06 2008-09-30 Kawasaki Steel Corporation High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same

Also Published As

Publication number Publication date
TWI288782B (en) 2007-10-21
EP1354972B1 (en) 2005-06-15
AU2003203552A1 (en) 2003-10-23
US6638371B1 (en) 2003-10-28
DE60300835D1 (en) 2005-07-21
EP1354972A1 (en) 2003-10-22
CN1252302C (en) 2006-04-19
KR100949694B1 (en) 2010-03-29
AU2003203552B2 (en) 2007-09-06
CA2422352C (en) 2009-08-18
KR20090060975A (en) 2009-06-15
DE60300835T2 (en) 2005-10-27
TW200305651A (en) 2003-11-01
KR100947203B1 (en) 2010-03-11
US20030201039A1 (en) 2003-10-30
CN1448528A (en) 2003-10-15
KR20030078643A (en) 2003-10-08

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Effective date: 20140314