CA2685710A1 - Abrasion resistant steel excellent in formability and production method thereof - Google Patents

Abrasion resistant steel excellent in formability and production method thereof Download PDF

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Publication number
CA2685710A1
CA2685710A1 CA002685710A CA2685710A CA2685710A1 CA 2685710 A1 CA2685710 A1 CA 2685710A1 CA 002685710 A CA002685710 A CA 002685710A CA 2685710 A CA2685710 A CA 2685710A CA 2685710 A1 CA2685710 A1 CA 2685710A1
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CA
Canada
Prior art keywords
resistant steel
abrasion resistant
mass
formability
phase
Prior art date
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Granted
Application number
CA002685710A
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French (fr)
Other versions
CA2685710C (en
Inventor
Yasuhiro Murota
Misao Ishikawa
Yoshinori Watanabe
Shinichi Suzuki
Nobuo Shikanai
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JFE Steel Corp
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Individual
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Publication of CA2685710A1 publication Critical patent/CA2685710A1/en
Application granted granted Critical
Publication of CA2685710C publication Critical patent/CA2685710C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • 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
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following 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
    • 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
    • C22C38/14—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D2211/009—Pearlite

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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 Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

Disclosed is an abrasion-resistant steel sheet which is suitable for a member that contacts with dirt such as a power shovel and has excellent processability in bending. Also disclosed is a method for producing the steel sheet. Specifically disclosed is a steel sheet which comprises the following components (by mass): C: 0.05 to 0.35%, Si: 0.05-1.0%, Mn: 0.1 to 2.0%, Ti: 0.1 to 1.2% and Al: 0.1% or less, further comprises at least one member selected from 0.1 to 1.0% of Cu, 0.1 to 2.0% of Ni, 0.1 to 1.0% of Cr, 0.05 to 1.0% of Mo, 0.05 to 1.0% of W and 0.0003 to 0.0030% of B (by mass), has a DI* value represented by the formula below of less than 60, and optionally comprises one or two members selected from 0.005 to 1.0% of Nb and 0.005 to 1.0% of V (by mass), with the remainder being Fe and inevitable impurities: DI* = 33.85x(0.1xC*)0.5x(0.7xSi+1)x(3.33xMn+1)x (0.35xCu+1)x(0.36xNi+1)x(2.16xCr+1)x(3xMo*+1)x(1.5xW*+1) (1) [wherein C* = C-1/4x(Ti-48/14N); Mo* = Mox(1-0.5x(Ti-48/14N)); and W* = Wx(1-0.5x(Ti-48/14N))].

Claims (6)

1. An abrasion resistant steel comprising, on a percent by mass basis, 0.05% to 0.35% of C, 0.05% to 1.0% of Si, 0.1%
to 2.0% of Mn, 0.1% to 1.2% of Ti, 0.1% or less of Al, at least one element of 0.1% to 1.0% of Cu, 0.1% to 2.0% of Ni, 0.1% to 1.0% of Cr, 0.05% to 1.0% of Mo, 0.05% to 1.0% of W, and 0.0003% to 0.0030% of B, and the remainder including Fe and incidental impurities, where DI* represented by Formula (1) is less than 60.
DI* = 33.85 x (0.1 x C*)0.5 x(0.7 x Si +1) x (3.33 x Mn + 1) x (0.35 x Cu + 1) x(0.36 x Ni + 1) x (2.16 x Cr + 1) x (3 x Mo* + 1) x (1.5 x W* + 1) (1) where C* = C - 1/4 x (Ti - 48/14N), Mo* = Mo x (1 - 0.5 x (Ti - 48/14N)), W* = W x (1 - 0.5 x (Ti - 48/14N)), and C, Si, Mn, Cu, Ni, Cr, Mo, W, Ti, and N represent contents (percent by mass).
2. The abrasion resistant steel according to Claim 1, further comprising at least one element of 0.005% to 1.0% of Nb and 0.005% to 1.0% of V on a percent by mass basis.
3. The abrasion resistant steel according to Claim 1 or Claim 2, wherein a microstructure of base metal comprises a ferrite and pearlite phase as a base phase, and a hard phase is dispersed in the base phase.
4. The abrasion resistant steel according to Claim 3, wherein the dispersion density of the hard phase is 400 particles/mm2 or more.
. A method for producing an abrasion resistant steel, the method comprising the steps of hot rolling a steel slab having the composition according to Claim 1 or Claim 2 and conducting cooling to 400°er at a cooling rate of 2°ess after hot rolling.
6. The method for producing an abrasion resistant steel excellent in formability, according to Claim 5, wherein the hot rolling reduction rate at 920° lower is specified to be 30% or more and the rolling finishing temperature is specified to be 900°C or lower.
CA2685710A 2007-05-29 2008-05-26 Abrasion resistant steel excellent in formability and production method thereof Active CA2685710C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2007142003 2007-05-29
JP2007-142003 2007-05-29
JP2008-113529 2008-04-24
JP2008113529A JP5380892B2 (en) 2007-05-29 2008-04-24 Wear-resistant steel plate with excellent workability and method for producing the same
PCT/JP2008/060096 WO2008146929A1 (en) 2007-05-29 2008-05-26 Abrasion-resistant steel sheet having excellent processability, and method for production thereof

Publications (2)

Publication Number Publication Date
CA2685710A1 true CA2685710A1 (en) 2008-12-04
CA2685710C CA2685710C (en) 2012-07-31

Family

ID=40075158

Family Applications (1)

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CA2685710A Active CA2685710C (en) 2007-05-29 2008-05-26 Abrasion resistant steel excellent in formability and production method thereof

Country Status (12)

Country Link
US (1) US20100147424A1 (en)
EP (1) EP2154262B1 (en)
JP (1) JP5380892B2 (en)
KR (1) KR101165654B1 (en)
CN (1) CN101688283B (en)
AU (1) AU2008255706B2 (en)
BR (1) BRPI0812277A2 (en)
CA (1) CA2685710C (en)
CL (1) CL2008001542A1 (en)
MX (1) MX2009012820A (en)
PE (1) PE20090342A1 (en)
WO (1) WO2008146929A1 (en)

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CN112553543A (en) * 2020-11-30 2021-03-26 攀钢集团研究院有限公司 Bainite-based wear-resistant steel and production method thereof

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Also Published As

Publication number Publication date
KR101165654B1 (en) 2012-07-16
WO2008146929A1 (en) 2008-12-04
CA2685710C (en) 2012-07-31
EP2154262B1 (en) 2018-03-07
JP5380892B2 (en) 2014-01-08
AU2008255706B2 (en) 2011-10-13
EP2154262A1 (en) 2010-02-17
CN101688283B (en) 2012-02-01
CL2008001542A1 (en) 2008-09-05
WO2008146929A9 (en) 2009-11-12
US20100147424A1 (en) 2010-06-17
AU2008255706A1 (en) 2008-12-04
CN101688283A (en) 2010-03-31
MX2009012820A (en) 2009-12-15
EP2154262A4 (en) 2016-01-20
BRPI0812277A2 (en) 2014-11-18
KR20090123006A (en) 2009-12-01
JP2009007665A (en) 2009-01-15
PE20090342A1 (en) 2009-03-29

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