NO20074370L - Stable with excellent toughness in the heat-treated weld zone - Google Patents

Stable with excellent toughness in the heat-treated weld zone

Info

Publication number
NO20074370L
NO20074370L NO20074370A NO20074370A NO20074370L NO 20074370 L NO20074370 L NO 20074370L NO 20074370 A NO20074370 A NO 20074370A NO 20074370 A NO20074370 A NO 20074370A NO 20074370 L NO20074370 L NO 20074370L
Authority
NO
Norway
Prior art keywords
less
excellent toughness
stable
heat
weld zone
Prior art date
Application number
NO20074370A
Other languages
Norwegian (no)
Other versions
NO343351B1 (en
Inventor
Ryuji Uemori
Yoshiyuki Watanabe
Kazuhiro Fukunaga
Yoshihide Nagai
Rikio Chijiiwa
Original Assignee
Nippon 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
Priority claimed from PCT/JP2006/325984 external-priority patent/WO2008075443A1/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of NO20074370L publication Critical patent/NO20074370L/en
Publication of NO343351B1 publication Critical patent/NO343351B1/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 by deformation combined with, or followed by, heat treatment
    • 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
    • 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
    • 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
    • C22C38/02—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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

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)
  • Arc Welding In General (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Den foreliggende oppfinnelse er et stål med utmerket seighet av en sveisevarmepåvirket sone karakterisert ved at den som masseprosent inneholder C: 0,02 til 0,06%, Si: 0,05 til 0,30%, Mn: 1,7 til 2,7%, P: 0,015% eller mindre, S: 0,010% eller mindre, Ti: 0,005 til 0,015%, O: 0,0010 til 0,0045%, og N: 0,0020 til 0,0060% og omfattende en balanse av jern og uunngåelige forurensninger, med en innblandingsmengde av forurensninger begrenset til Al: 0,004% eller mindre, Nb: 0,003% eller mindre, og V: 0,030% eller mindre, og med en CeH representert ved formelen (A) i området 0,04 eller mindre: CeH = C+1/4Si-1/24Mn+1/48Cu+1/32Ni+1/0,4Nb+1/2V... (A) hvori C, Si, Mn, Cu, Ni, Nb og V viser stålsammensetningen (masse%). 1The present invention is a steel of excellent toughness of a weld heat affected zone characterized in that it contains as a mass percentage C: 0.02 to 0.06%, Si: 0.05 to 0.30%, Mn: 1.7 to 2, 7%, P: 0.015% or less, S: 0.010% or less, Ti: 0.005 to 0.015%, O: 0.0010 to 0.0045%, and N: 0.0020 to 0.0060% and comprising a balance of iron and unavoidable contaminants, with an admixture amount of contaminants limited to Al: 0.004% or less, Nb: 0.003% or less, and V: 0.030% or less, and having a CeH represented by formula (A) in the range 0.04 or less: CeH = C + 1 / 4Si-1 / 24Mn + 1 / 48Cu + 1 / 32Ni + 1 / 0.4Nb + 1 / 2V ... (A) wherein C, Si, Mn, Cu, Ni, Nb and V shows the steel composition (mass%). 1

NO20074370A 2006-12-20 2007-08-28 Steel with excellent toughness in welding heat affected welding zone and method of manufacture thereof NO343351B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006002006 2006-12-20
PCT/JP2006/325984 WO2008075443A1 (en) 2006-12-20 2006-12-20 Steel excelling in toughness at region affected by welding heat

Publications (2)

Publication Number Publication Date
NO20074370L true NO20074370L (en) 2007-10-30
NO343351B1 NO343351B1 (en) 2019-02-04

Family

ID=39937607

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20074370A NO343351B1 (en) 2006-12-20 2007-08-28 Steel with excellent toughness in welding heat affected welding zone and method of manufacture thereof

Country Status (1)

Country Link
NO (1) NO343351B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2231985C (en) * 1997-03-26 2004-05-25 Sumitomo Metal Industries, Ltd. Welded high-strength steel structures and methods of manufacturing the same
JP3522564B2 (en) * 1998-04-17 2004-04-26 新日本製鐵株式会社 Steel plate with excellent toughness in weld heat affected zone
JP4268317B2 (en) * 2000-06-09 2009-05-27 新日本製鐵株式会社 Ultra-high-strength steel pipe excellent in low temperature toughness of welded portion and manufacturing method thereof
JP4311740B2 (en) * 2004-10-27 2009-08-12 株式会社神戸製鋼所 Thick steel plate with high heat input welded joint toughness

Also Published As

Publication number Publication date
NO343351B1 (en) 2019-02-04

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