BR112017016799A2 - Hot-rolled steel product - Google Patents

Hot-rolled steel product

Info

Publication number
BR112017016799A2
BR112017016799A2 BR112017016799-9A BR112017016799A BR112017016799A2 BR 112017016799 A2 BR112017016799 A2 BR 112017016799A2 BR 112017016799 A BR112017016799 A BR 112017016799A BR 112017016799 A2 BR112017016799 A2 BR 112017016799A2
Authority
BR
Brazil
Prior art keywords
hot
rolled steel
grain
steel product
boundary
Prior art date
Application number
BR112017016799-9A
Other languages
Japanese (ja)
Portuguese (pt)
Inventor
Sugiura Natsuko
Yoshida Mitsuru
Shuto Hiroshi
Yokoi Tatsuo
Wakita Masayuki
Original Assignee
Nippon Steel & Sumitomo Metal Corporation
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 Corporation filed Critical Nippon Steel & Sumitomo Metal Corporation
Publication of BR112017016799A2 publication Critical patent/BR112017016799A2/en

Links

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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/001—Heat treatment of ferrous alloys containing Ni
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • 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
    • C22C38/005—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
    • C22C38/08—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
    • C22C38/14—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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • C22C38/40—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
    • 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

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)
  • Heat Treatment Of Steel (AREA)

Abstract

uma chapa de aço laminada a quente que tem uma composição química especificada e tem uma estrutura que contém, em % em área, ferrita e bainita no teor total de 75 a 95% e martensita em um teor de 5 a 20%, em que, quando uma fronteira que tem um grau de desorientação de 15° ou mais é definida como uma fronteira de grão e uma área cercada pela fronteira de grão e que tem um diâmetro de círculo equivalente de 0,3 µm ou mais é definida como um grão de cristal, a razão de área de grãos de cristal, cada uma, tem um grau de desorientação intergranular de 5 a 14° é 10 a 60% na estrutura.a hot-rolled steel sheet that has a specified chemical composition and has a structure that contains, in% in area, ferrite and bainite in the total content of 75 to 95% and martensite in a content of 5 to 20%, where, when a boundary that has a degree of disorientation of 15 ° or more is defined as a grain boundary and an area surrounded by the grain boundary and that has an equivalent circle diameter of 0.3 µm or more is defined as a grain of crystal, the crystal grain area ratio each has a degree of intergranular disorientation of 5 to 14 ° is 10 to 60% in the structure.

BR112017016799-9A 2015-02-20 2015-02-20 Hot-rolled steel product BR112017016799A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/054860 WO2016132545A1 (en) 2015-02-20 2015-02-20 Hot-rolled steel sheet

Publications (1)

Publication Number Publication Date
BR112017016799A2 true BR112017016799A2 (en) 2018-04-03

Family

ID=56688802

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112017016799-9A BR112017016799A2 (en) 2015-02-20 2015-02-20 Hot-rolled steel product

Country Status (11)

Country Link
US (1) US20180023162A1 (en)
EP (1) EP3260566B1 (en)
JP (1) JP6358385B2 (en)
KR (1) KR101981876B1 (en)
CN (1) CN107250404B (en)
BR (1) BR112017016799A2 (en)
ES (1) ES2763574T3 (en)
MX (1) MX2017010537A (en)
PL (1) PL3260566T3 (en)
TW (1) TWI600774B (en)
WO (1) WO2016132545A1 (en)

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WO2016132549A1 (en) * 2015-02-20 2016-08-25 新日鐵住金株式会社 Hot-rolled steel sheet
KR101957078B1 (en) * 2015-02-20 2019-03-11 신닛테츠스미킨 카부시키카이샤 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
CN107406929B (en) * 2015-02-25 2019-01-04 新日铁住金株式会社 Hot rolled steel plate
CN109563586B (en) 2016-08-05 2021-02-09 日本制铁株式会社 Steel sheet and plated steel sheet
CN109563580A (en) 2016-08-05 2019-04-02 新日铁住金株式会社 steel sheet and plated steel sheet
KR102460598B1 (en) * 2018-03-29 2022-10-31 닛폰세이테츠 가부시키가이샤 hot stamped body
WO2020039979A1 (en) * 2018-08-23 2020-02-27 Ｊｆｅスチール株式会社 Hot rolled steel plate and manufacturing method thereof
KR102603495B1 (en) 2019-05-31 2023-11-20 닛폰세이테츠 가부시키가이샤 hot stamp molding body
KR102604220B1 (en) 2019-05-31 2023-11-21 닛폰세이테츠 가부시키가이샤 hot stamp molding body
WO2020241257A1 (en) 2019-05-31 2020-12-03 日本製鉄株式会社 Steel sheet for hot-stamping use
US20220227105A1 (en) 2019-05-31 2022-07-21 Nippon Steel Corporation Steel sheet for hot stamping
KR102604058B1 (en) 2019-05-31 2023-11-22 닛폰세이테츠 가부시키가이샤 hot stamp molding body
JP7231022B2 (en) 2019-05-31 2023-03-01 日本製鉄株式会社 hot stamped body
CN114787405B (en) * 2020-01-09 2023-05-12 日本制铁株式会社 Hot-pressed molded body
KR102391651B1 (en) 2020-09-22 2022-04-29 주식회사 포스코 Hot rolled steel sheet having excellent crashworthness, and method for manufacturing the same

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KR101758003B1 (en) * 2013-04-15 2017-07-13 신닛테츠스미킨 카부시키카이샤 Hot-rolled steel sheet

Also Published As

Publication number Publication date
WO2016132545A1 (en) 2016-08-25
TW201638356A (en) 2016-11-01
US20180023162A1 (en) 2018-01-25
KR101981876B1 (en) 2019-05-23
EP3260566A4 (en) 2018-09-12
JP6358385B2 (en) 2018-07-18
KR20170107041A (en) 2017-09-22
EP3260566A1 (en) 2017-12-27
ES2763574T3 (en) 2020-05-29
PL3260566T3 (en) 2020-08-24
TWI600774B (en) 2017-10-01
MX2017010537A (en) 2017-12-14
EP3260566B1 (en) 2019-11-27
JPWO2016132545A1 (en) 2017-11-30
CN107250404B (en) 2019-04-26
CN107250404A (en) 2017-10-13

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Legal Events

Date Code Title Description
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL CORPORATION (JP)

B09A Decision: intention to grant [chapter 9.1 patent gazette]
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time