MX2018012411A - Lamina de acero de alta resistencia y metodo para la fabricacion de la misma. - Google Patents

Lamina de acero de alta resistencia y metodo para la fabricacion de la misma.

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Publication number
MX2018012411A
MX2018012411A MX2018012411A MX2018012411A MX2018012411A MX 2018012411 A MX2018012411 A MX 2018012411A MX 2018012411 A MX2018012411 A MX 2018012411A MX 2018012411 A MX2018012411 A MX 2018012411A MX 2018012411 A MX2018012411 A MX 2018012411A
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MX
Mexico
Prior art keywords
less
grain diameter
steel sheet
high strength
crystal grain
Prior art date
Application number
MX2018012411A
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English (en)
Inventor
Takashima Katsutoshi
Kobayashi Takashi
Funakawa Yoshimasa
Original Assignee
Jfe Steel Corp
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Publication date
Application filed by Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of MX2018012411A publication Critical patent/MX2018012411A/es

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    • 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
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    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
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    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
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    • 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
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    • 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
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    • 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
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    • C21D8/0236—Cold rolling
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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  • 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

Un objetivo es proporcionar una lámina de acero de alta resistencia excelente en términos de alargado, conformabilidad por expansión del agujero, procesabilidad por flexión y resistencia a la fractura retardada y un método para fabricar la lámina de acero. Una lámina de acero de alta resistencia que tiene una composición química que contiene, en % en masa, C: 0.15% a 0.25%, Si: 1.00% a 2.20%, Mn: 2.00% a 3.50%, P: 0.05% o menos, S: 0.005% o menos, Al: 0.01% a 0.50%, N: 0.010% o menos, B: 0.0003% a 0.0050%, uno, dos o más seleccionados de Ti: 0.005% a 0.05%, Cu: 0.003% a 0.50%, Ni: 0.003% a 0.50%, Sn: 0.003% a 0.50%, Co: 0.003% a 0.05%, y Mo: 0.003% a 0.50%, siendo el resto Fe e impurezas inevitables; y una microestructura que incluye, en términos de fracción de volumen, 15% o menos (incluido 0%) de ferrita que tiene un diámetro promedio de grano de cristal de 2 µm o menos, 2% a 15% de austenita retenida que tiene un diámetro promedio de grano de cristal de 2 µm o menos, 10% o menos (incluido 0%) de martensita que tiene un diámetro promedio de grano de cristal de 3 µm o menos, y el resto es bainita y martensita templada que tienen un diámetro promedio de grano de cristal de 6 µm o menos, en el cual el número promedio de granos de cementita con un diámetro de grano de 0.04 µm o más, existente en la bainita y en los granos de martensita templada, es de 10 o más.
MX2018012411A 2016-04-14 2017-03-22 Lamina de acero de alta resistencia y metodo para la fabricacion de la misma. MX2018012411A (es)

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JP2016080947 2016-04-14
PCT/JP2017/011288 WO2017179372A1 (ja) 2016-04-14 2017-03-22 高強度鋼板およびその製造方法

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US (1) US11193180B2 (es)
EP (1) EP3444372B1 (es)
JP (1) JP6252713B1 (es)
KR (1) KR102121415B1 (es)
CN (1) CN109072381B (es)
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CN113166839B (zh) 2019-02-06 2023-02-10 日本制铁株式会社 热浸镀锌钢板及其制造方法
WO2020162561A1 (ja) 2019-02-06 2020-08-13 日本製鉄株式会社 溶融亜鉛めっき鋼板およびその製造方法
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JP6835294B2 (ja) * 2019-03-07 2021-02-24 日本製鉄株式会社 熱延鋼板およびその製造方法
KR102660727B1 (ko) * 2019-06-28 2024-04-26 닛폰세이테츠 가부시키가이샤 강판
JP7088140B2 (ja) * 2019-08-06 2022-06-21 Ｊｆｅスチール株式会社 高強度薄鋼板およびその製造方法
WO2021024748A1 (ja) * 2019-08-06 2021-02-11 Ｊｆｅスチール株式会社 高強度薄鋼板およびその製造方法
JP7191796B2 (ja) * 2019-09-17 2022-12-19 株式会社神戸製鋼所 高強度鋼板およびその製造方法
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WO2021123886A1 (en) * 2019-12-19 2021-06-24 Arcelormittal High toughness hot rolled and annealed steel sheet and method of manufacturing the same
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