MY162996A - High strength hot rolled steel sheet having good fatique strength and method for manufacturing the same - Google Patents

High strength hot rolled steel sheet having good fatique strength and method for manufacturing the same

Info

Publication number
MY162996A
MY162996A MYPI2012003685A MYPI2012003685A MY162996A MY 162996 A MY162996 A MY 162996A MY PI2012003685 A MYPI2012003685 A MY PI2012003685A MY PI2012003685 A MYPI2012003685 A MY PI2012003685A MY 162996 A MY162996 A MY 162996A
Authority
MY
Malaysia
Prior art keywords
steel sheet
hot rolled
rolled steel
less
high strength
Prior art date
Application number
MYPI2012003685A
Inventor
Katsumi Nakajima
Yoshimasa Funakawa
Nobuyuki Nakamura
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 MY162996A publication Critical patent/MY162996A/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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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
    • C22C38/02—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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Landscapes

  • 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)
  • Heat Treatment Of Steel (AREA)

Abstract

[OBJECT] TO PROVIDE A HIGH STRENGTH HOT ROLLED STEEL SHEET EXCELLENT IN FATIGUE STRENGTH AND HAVING TENSILE STRENGTH (TS) OF AT LEAST 490 MPA. [SOLVING MEANS] THE HIGH STRENGTH HOT ROLLED STEEL SHEET COMPRISING BY MASS %, C: 0.08% TO 018 %, SI: LESS THAN 0.5%, MN: 0.8% TO 1.8%, P: 0.05% OR LESS, S: 0.005% OR LESS, N: 0.008% OR LESS, AL: 0.0 1% TO 0.1%, TI: 0.01% TO 0.1%, AND FE AND INCIDENTAL IMPURITIES AS THE REMAINDER, WHEREIN A SURFACE LAYER PORTION OF THE STEEL SHEET RANGING FROM A SURFACE TO 100 µM DEPTH THEREOF HAS MICROSTRUCTURE CONSTITUTED OF FERRITE PHASE AS MAIN PHASE AND SECONDARY PHASE OF WHICH FRACTION IS 30% OR LESS, THE AVERAGE GRAIN DIAMETER OF THE FERRITE PHASE IS NOT LARGER THAN 10 µM, AT LEAST 30% OF TI CONTENT IN THE SURFACE LAYER PORTION IS PRECIPITATED AS TI CARBIDE IN THE SURFACE LAYER PORTION, AND THE AVERAGE GRAIN DIAMETER OF THE TI CARBIDE IS NOT LARGER THAN 30 NM.
MYPI2012003685A 2012-01-26 2012-08-15 High strength hot rolled steel sheet having good fatique strength and method for manufacturing the same MY162996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012014470A JP2013155390A (en) 2012-01-26 2012-01-26 High strength hot rolled steel sheet having excellent fatigue property and method for producing the same

Publications (1)

Publication Number Publication Date
MY162996A true MY162996A (en) 2017-07-31

Family

ID=49050884

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2012003685A MY162996A (en) 2012-01-26 2012-08-15 High strength hot rolled steel sheet having good fatique strength and method for manufacturing the same

Country Status (5)

Country Link
JP (1) JP2013155390A (en)
BR (1) BR102012020368A2 (en)
MY (1) MY162996A (en)
RU (1) RU2510803C2 (en)
ZA (1) ZA201206175B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5783229B2 (en) 2013-11-28 2015-09-24 Ｊｆｅスチール株式会社 Hot-rolled steel sheet and manufacturing method thereof
JP6528522B2 (en) * 2015-04-17 2019-06-12 日本製鉄株式会社 High strength hot rolled steel sheet excellent in ductility, fatigue characteristics and corrosion resistance and manufacturing method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU855051A1 (en) * 1979-11-11 1981-08-15 Орско-Халиловский Ордена Трудового Красного Знамени Металлургический Комбинат Steel
EP1170390A4 (en) * 1999-09-28 2005-02-23 Jfe Steel Corp Hot-rolled steel sheet having high tensile strength and method for production thereof
JP5076347B2 (en) * 2006-03-31 2012-11-21 Ｊｆｅスチール株式会社 Steel plate excellent in fine blanking workability and manufacturing method thereof
RU2387731C2 (en) * 2008-03-31 2010-04-27 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Steel and item made from it (versions)
RU2394923C1 (en) * 2009-06-08 2010-07-20 Открытое акционерное общество "Западно-Сибирский металлургический комбинат" ( ОАО "ЗСМК") Procedure for production of hot rolled rod for fabricating reinforcing bar of periodic profile in reinforcing concrete structures

Also Published As

Publication number Publication date
JP2013155390A (en) 2013-08-15
BR102012020368A2 (en) 2015-09-22
ZA201206175B (en) 2013-05-29
RU2012134770A (en) 2014-02-20
RU2510803C2 (en) 2014-04-10

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