MX2018014261A - Coated steel sheet and manufacturing method therefor. - Google Patents

Coated steel sheet and manufacturing method therefor.

Info

Publication number
MX2018014261A
MX2018014261A MX2018014261A MX2018014261A MX2018014261A MX 2018014261 A MX2018014261 A MX 2018014261A MX 2018014261 A MX2018014261 A MX 2018014261A MX 2018014261 A MX2018014261 A MX 2018014261A MX 2018014261 A MX2018014261 A MX 2018014261A
Authority
MX
Mexico
Prior art keywords
less
grain size
volume fraction
steel sheet
coated steel
Prior art date
Application number
MX2018014261A
Other languages
Spanish (es)
Inventor
Sawanishi Chikaumi
Ikeda Rinsei
Takashima Katsutoshi
Taniguchi Koichi
Kobayashi Takashi
Tagawa Tetsuya
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 MX2018014261A publication Critical patent/MX2018014261A/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
    • 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
    • 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
    • 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
    • C22C38/02—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
    • C22C38/14—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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Abstract

The purpose of the present invention is to provide a coated steel sheet with extremely high tensile strength and excellent delayed fracture resistance and suppression of cracking during resistance welding. Provided is a coated steel sheet: which has a structure comprising 35% to 70% of ferrite by volume fraction, not more than 12% of retained austenite by volume fraction, 15% to 60% of martensite by volume fraction, and for the balance, not more than 30% of bainite by volume fraction and not more than 5% of non-recrystallized ferrite by volume fraction; in which the average crystal grain size of the ferrite is 5 µm or less, the average crystal grain size of the retained austenite is 2 µm or less, the average crystal grain size of the martensite is 2 µm or less, and the average crystal grain size of the bainite is 3 µm or less; and in which the structure contains, on average, at least 30 grains per 100 µm2 of Ti or Nb deposits with an average grain size of 0.10 µm or less.
MX2018014261A 2016-05-25 2017-05-11 Coated steel sheet and manufacturing method therefor. MX2018014261A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016104262 2016-05-25
PCT/JP2017/017912 WO2017203994A1 (en) 2016-05-25 2017-05-11 Coated steel sheet and manufacturing method therefor

Publications (1)

Publication Number Publication Date
MX2018014261A true MX2018014261A (en) 2019-04-29

Family

ID=60411176

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2018014261A MX2018014261A (en) 2016-05-25 2017-05-11 Coated steel sheet and manufacturing method therefor.

Country Status (5)

Country Link
JP (1) JP6424967B2 (en)
KR (1) KR102145293B1 (en)
CN (1) CN109154045B (en)
MX (1) MX2018014261A (en)
WO (1) WO2017203994A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101858853B1 (en) 2016-12-19 2018-06-28 주식회사 포스코 Hot rolled steel sheet for electro resistance welded pipe with excellent weldability and method for manufacturing thereof
JP6897874B2 (en) * 2019-01-09 2021-07-07 Ｊｆｅスチール株式会社 High-strength cold-rolled steel sheet and its manufacturing method
CN110029271B (en) * 2019-04-09 2020-02-07 东北大学 500 MPa-grade niobium-containing twisted steel and manufacturing method thereof
CN110157864A (en) * 2019-05-21 2019-08-23 武汉钢铁有限公司 A kind of 1300MPa grades of low hydrogen-induced delayed cracking sensibility hot forming steel and production method
KR20220024957A (en) * 2019-07-31 2022-03-03 제이에프이 스틸 가부시키가이샤 High-strength steel sheet, high-strength member and manufacturing method thereof
MX2022010760A (en) * 2020-05-08 2022-09-23 Nippon Steel Corp Hot rolled steel sheet and method for producing same.
WO2022050500A1 (en) * 2020-09-01 2022-03-10 현대제철 주식회사 Material for hot stamping, and method for manufacturing same
WO2022050501A1 (en) * 2020-09-01 2022-03-10 현대제철 주식회사 Material for hot stamping and method for manufacturing same
CN114466947B (en) * 2020-09-01 2023-05-23 现代制铁株式会社 Material for hot stamping and method for producing same
CN114466946B (en) * 2020-09-01 2023-05-23 现代制铁株式会社 Material for hot stamping and manufacturing method thereof
KR102411174B1 (en) * 2020-12-09 2022-06-22 현대제철 주식회사 Hot stamping component
KR20230088118A (en) * 2021-12-10 2023-06-19 현대제철 주식회사 Material for hot stamping

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
JPS4949536B1 (en) 1969-02-13 1974-12-27
JP3758515B2 (en) 2001-04-03 2006-03-22 住友金属工業株式会社 High tensile galvanized steel sheet with excellent resistance weldability
JP5082451B2 (en) * 2006-01-24 2012-11-28 Ｊｆｅスチール株式会社 Method for producing high-strength cold-rolled steel sheet excellent in deep drawability and ductility, and method for producing high-strength hot-dip galvanized steel sheet using the cold-rolled steel sheet
AU2008311043B2 (en) * 2007-10-10 2013-02-21 Nucor Corporation Complex metallographic structured steel and method of manufacturing same
JP4712882B2 (en) * 2008-07-11 2011-06-29 株式会社神戸製鋼所 High strength cold-rolled steel sheet with excellent hydrogen embrittlement resistance and workability
KR20100096840A (en) * 2009-02-25 2010-09-02 현대제철 주식회사 Ultra-high strength hot dip galvanized steel sheet having excellent delayed fracture resistance, and method for producing the same
JP5709151B2 (en) * 2009-03-10 2015-04-30 Ｊｆｅスチール株式会社 High-strength hot-dip galvanized steel sheet with excellent formability and method for producing the same
JP5434960B2 (en) * 2010-05-31 2014-03-05 Ｊｆｅスチール株式会社 High-strength hot-dip galvanized steel sheet excellent in bendability and weldability and method for producing the same
JP5699860B2 (en) * 2011-08-24 2015-04-15 新日鐵住金株式会社 Hot-dip galvanized steel sheet and manufacturing method thereof
JP5821911B2 (en) * 2013-08-09 2015-11-24 Ｊｆｅスチール株式会社 High yield ratio high strength cold-rolled steel sheet and method for producing the same
CN106170574B (en) * 2014-03-31 2018-04-03 杰富意钢铁株式会社 High yield ratio and high-strength cold-rolled steel sheet and its manufacture method
WO2015151427A1 (en) * 2014-03-31 2015-10-08 Ｊｆｅスチール株式会社 High-yield-ratio high-strength cold rolled steel sheet and production method therefor
EP3128026B1 (en) * 2014-03-31 2019-03-06 JFE Steel Corporation High-strength cold rolled steel sheet exhibiting excellent material-quality uniformity, and production method therefor

Also Published As

Publication number Publication date
JP6424967B2 (en) 2018-11-21
WO2017203994A1 (en) 2017-11-30
CN109154045B (en) 2020-10-09
JPWO2017203994A1 (en) 2018-06-14
CN109154045A (en) 2019-01-04
KR20180133508A (en) 2018-12-14
KR102145293B1 (en) 2020-08-18

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