BR9807805A - Aço e processo para preparar uma chapa de aço - Google Patents

Aço e processo para preparar uma chapa de aço

Info

Publication number
BR9807805A
BR9807805A BR9807805-4A BR9807805A BR9807805A BR 9807805 A BR9807805 A BR 9807805A BR 9807805 A BR9807805 A BR 9807805A BR 9807805 A BR9807805 A BR 9807805A
Authority
BR
Brazil
Prior art keywords
steel
tensile strength
preparing
steel sheet
niobium
Prior art date
Application number
BR9807805-4A
Other languages
English (en)
Inventor
Jayoung Koo
Narasimha-Rao V Bangaru
Michael J Luton
Clifford W Petersen
Kazuki Fujiwara
Sushi Okaguchi
Original Assignee
Exxon Production Research Co
Sumitomo Metal Ind
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 Exxon Production Research Co, Sumitomo Metal Ind filed Critical Exxon Production Research Co
Publication of BR9807805A publication Critical patent/BR9807805A/pt

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
    • C22C38/02—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • 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
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • 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
    • 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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
    • C22C38/40—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
    • 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

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)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

"AçO E PROCESSO PARA PREPARAR UMA CHAPA DE AçO". São proporcionados um aço com alta resistência à tração possuindo uma excelente tenacidade ao longo da sua espessura, excelentes propriedades nas juntas soldadas, e uma resistência à tração (TS) de pelo menos aproximadamente 900 MPa, e um processo para produzir esse aço. Os aços de acordo com esta invenção possuem, e preferência, a seguinte composição baseada em % em peso: carbono (C): 0,02% a 0,1%; silício (Si): não mais que 0,60%; manganês (mn): 0,2% a2,5%: níquel (Ni): 0,2% a 1,2%; nióbio (Nb): 0,01% a 0,1% a 0,1%; titânio (Ti): 0,0005% a 0,03%; alumínio (Al): não mais que 0,1%; nitrogênio (N): 0,001% a 0,006%; cobre (Cu): 0% 0,6%; cromo (Cr): 0% a 0,8%; molibdênio (Mo): 0% a 0,6%; vanádio (V): 0% a 0,1%; boro (B): 0% a 0,0025%; e cálcio (Ca): 0% a 0,006%. O valor de Vs conforme definido por Vs=C+ (Mn/5)+5P-(Ni/10)-(Mo/15)+(Cu/10) é de 0,15 a 0,42. P e S entre as impurezas estão contidos em uma quantidade não maior que 0,015% e não maior que 0,003% respectivamente. O tamanho do carboneto no aço não é maior que 5 mícrons na sua direção longitudinal.
BR9807805-4A 1997-02-27 1998-02-26 Aço e processo para preparar uma chapa de aço BR9807805A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9043630A JPH10237583A (ja) 1997-02-27 1997-02-27 高張力鋼およびその製造方法
PCT/US1998/002966 WO1998038345A1 (en) 1997-02-27 1998-02-26 High-tensile-strength steel and method of manufacturing the same

Publications (1)

Publication Number Publication Date
BR9807805A true BR9807805A (pt) 2000-02-22

Family

ID=12669188

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9807805-4A BR9807805A (pt) 1997-02-27 1998-02-26 Aço e processo para preparar uma chapa de aço

Country Status (13)

Country Link
US (1) US6245290B1 (pt)
EP (1) EP0972087A4 (pt)
JP (2) JPH10237583A (pt)
KR (1) KR100506967B1 (pt)
CN (1) CN1083893C (pt)
AR (1) AR011173A1 (pt)
AU (1) AU726316B2 (pt)
BR (1) BR9807805A (pt)
CA (1) CA2280923C (pt)
CO (1) CO5031263A1 (pt)
RU (1) RU2205245C2 (pt)
UA (1) UA57775C2 (pt)
WO (1) WO1998038345A1 (pt)

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WO1998038345A1 (en) 1998-09-03
RU2205245C2 (ru) 2003-05-27
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CN1249006A (zh) 2000-03-29
JP3545770B2 (ja) 2004-07-21
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US6245290B1 (en) 2001-06-12
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AU6656698A (en) 1998-09-18
JP2000513050A (ja) 2000-10-03
CN1083893C (zh) 2002-05-01
KR100506967B1 (ko) 2005-08-09
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