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
Authority
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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    • C21D2211/00—Microstructure comprising significant phases
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/003—Cementite
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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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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
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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
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
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
WO2021052312A1 (zh) * 2019-09-19 2021-03-25 宝山钢铁股份有限公司 马氏体钢带及其制造方法
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CN115003841B (zh) * 2020-01-31 2023-11-21 杰富意钢铁株式会社 钢板、部件及它们的制造方法
KR20220129615A (ko) * 2020-02-28 2022-09-23 제이에프이 스틸 가부시키가이샤 강판, 부재 및 그들의 제조 방법
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