NO964034L - Stål som kan sveises og som har höy strekkfasthet og utmerket seighet ved lave temperaturer - Google Patents

Stål som kan sveises og som har höy strekkfasthet og utmerket seighet ved lave temperaturer

Info

Publication number
NO964034L
NO964034L NO964034A NO964034A NO964034L NO 964034 L NO964034 L NO 964034L NO 964034 A NO964034 A NO 964034A NO 964034 A NO964034 A NO 964034A NO 964034 L NO964034 L NO 964034L
Authority
NO
Norway
Prior art keywords
steel
martensite
tensile strength
welded
low temperatures
Prior art date
Application number
NO964034A
Other languages
English (en)
Other versions
NO964034D0 (no
Inventor
Hiroshi Tamehiro
Hitoshi Asahi
Takuya Hara
Yoshio Tereda
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 JP01108195A external-priority patent/JP3244981B2/ja
Priority claimed from JP01730395A external-priority patent/JP3244985B2/ja
Priority claimed from JP01830795A external-priority patent/JP3244986B2/ja
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of NO964034D0 publication Critical patent/NO964034D0/no
Publication of NO964034L publication Critical patent/NO964034L/no

Links

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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C21D2211/002—Bainite
    • 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
    • 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
    • C21D8/0247—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 heat treatment
    • C21D8/0263—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 heat treatment following hot rolling

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 Steel (AREA)

Abstract

Denne oppfinnelse tilsetter elementer så som Cu, B, Cr, Ca, V osv., til en ståltype med lavt karboninnhold, høyt Mn-Ni-Mo-innhold og spor av Ti, og gjør at stålet kan ha en herdet martensitt/bainitt-blandingsstruktur inneholdende minst 60% herdet martensitt om- vandlet fra ikke-omkrystallisert austenitt med en middel-austenittkornstørrelse (dy), som ikke er større enn 10 j«n som mikrostruk- tur, eller en herdet martensittstruktur som inneholder minst 90% martensitt omvandlet fra ikke-omkrystallisert austenitt. Den forelig- gende oppfinnelse gir videre en P-verdi i området 1,9-4,0, og tilveiebringer således et stål med ultrahøy styrke, med en strekkfast- het på minst 950 MPa (ikke lavere enn 100 - ifølge API-standarden), og som har utmerket lavtemperatur-seighet, HAZ-seighet og felt- sveisbarhet i kalde områder.
NO964034A 1995-01-26 1996-09-25 Stål som kan sveises og som har höy strekkfasthet og utmerket seighet ved lave temperaturer NO964034L (no)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP01108195A JP3244981B2 (ja) 1995-01-26 1995-01-26 低温靭性の優れた溶接性高強度鋼
JP01730395A JP3244985B2 (ja) 1995-02-03 1995-02-03 低温靭性の優れた溶接性高張力鋼
JP01830795A JP3244986B2 (ja) 1995-02-06 1995-02-06 低温靭性の優れた溶接性高張力鋼
PCT/JP1996/000155 WO1996023083A1 (en) 1995-01-26 1996-01-26 Weldable high-tensile steel excellent in low-temperature toughness

Publications (2)

Publication Number Publication Date
NO964034D0 NO964034D0 (no) 1996-09-25
NO964034L true NO964034L (no) 1996-11-25

Family

ID=27279259

Family Applications (1)

Application Number Title Priority Date Filing Date
NO964034A NO964034L (no) 1995-01-26 1996-09-25 Stål som kan sveises og som har höy strekkfasthet og utmerket seighet ved lave temperaturer

Country Status (9)

Country Link
US (1) US5798004A (no)
EP (1) EP0753596B1 (no)
KR (1) KR100206151B1 (no)
CN (1) CN1146784A (no)
AU (1) AU680590B2 (no)
CA (1) CA2186476C (no)
DE (1) DE69608179T2 (no)
NO (1) NO964034L (no)
WO (1) WO1996023083A1 (no)

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PL2998414T3 (pl) * 2013-05-14 2019-08-30 Nippon Steel & Sumitomo Metal Corporation Walcowana na gorąco blacha stalowa cienka i sposób jej wytwarzania
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Also Published As

Publication number Publication date
CA2186476C (en) 2001-01-16
DE69608179T2 (de) 2001-01-18
DE69608179D1 (de) 2000-06-15
EP0753596A1 (en) 1997-01-15
US5798004A (en) 1998-08-25
NO964034D0 (no) 1996-09-25
EP0753596B1 (en) 2000-05-10
AU4496496A (en) 1996-08-14
KR100206151B1 (ko) 1999-07-01
CN1146784A (zh) 1997-04-02
CA2186476A1 (en) 1996-08-01
KR970702384A (ko) 1997-05-13
AU680590B2 (en) 1997-07-31
WO1996023083A1 (en) 1996-08-01
EP0753596A4 (en) 1998-05-20

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