MX2017005568A - Lamina de acero de alta resistencia, lamina de acero galvanizada por inmersion en caliente de alta resistencia, lamina de acero recubierta de aluminio por inmersion en caliente de alta resistencia, y lamina de acero electrogalvanizada de alta resistencia, y metodos para la fabricacion de las mismas. - Google Patents

Lamina de acero de alta resistencia, lamina de acero galvanizada por inmersion en caliente de alta resistencia, lamina de acero recubierta de aluminio por inmersion en caliente de alta resistencia, y lamina de acero electrogalvanizada de alta resistencia, y metodos para la fabricacion de las mismas.

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Publication number
MX2017005568A
MX2017005568A MX2017005568A MX2017005568A MX2017005568A MX 2017005568 A MX2017005568 A MX 2017005568A MX 2017005568 A MX2017005568 A MX 2017005568A MX 2017005568 A MX2017005568 A MX 2017005568A MX 2017005568 A MX2017005568 A MX 2017005568A
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MX
Mexico
Prior art keywords
steel sheet
strength
methods
dip galvanized
molten aluminum
Prior art date
Application number
MX2017005568A
Other languages
English (en)
Inventor
Yokota Takeshi
Seto Kazuhiro
Matsuda Hiroshi
Kawasaki Yoshiyasu
Yamashita Takako
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 MX2017005568A publication Critical patent/MX2017005568A/es

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Coating With Molten Metal (AREA)

Abstract

Una lámina de acero de alta resistencia con excelente conformabilidad y alto límite de elasticidad que tiene TS de 980 MPa o más y YR de 68% o más se obtiene al proporcionar una composición química predeterminada y una microestructura de acero que contiene, en relación de área, 15 a 55% de ferrita poligonal, 8% o más de ferrita no recristalizada, y 15 a 30% de martensita, y que contiene, en fracción en volumen, 12% o más de austenita retenida, en la cual la ferrita poligonal tiene un tamaño de grano promedio de 4 µm o menos, la martensita tiene un tamaño de grano promedio de 2 µm o menos, la austenita retenida tiene un tamaño de grano promedio de 2 µm o menos, y un valor obtenido al dividir un contenido de Mn en la austenita retenida (en % en masa) entre un contenido de Mn en la ferrita poligonal (en % en masa) es igual a 2.0 o más.
MX2017005568A 2014-10-30 2015-10-29 Lamina de acero de alta resistencia, lamina de acero galvanizada por inmersion en caliente de alta resistencia, lamina de acero recubierta de aluminio por inmersion en caliente de alta resistencia, y lamina de acero electrogalvanizada de alta resistencia, y metodos para la fabricacion de las mismas. MX2017005568A (es)

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CN107075643A (zh) 2017-08-18
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KR101915917B1 (ko) 2018-11-06
CN107075643B (zh) 2019-03-26
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US10550446B2 (en) 2020-02-04
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