NO975392L - Metallurgisk strÕlprodukt med bainittisk struktur og fremgangsmÕte for fremstilling av dette - Google Patents

Metallurgisk strÕlprodukt med bainittisk struktur og fremgangsmÕte for fremstilling av dette

Info

Publication number
NO975392L
NO975392L NO975392A NO975392A NO975392L NO 975392 L NO975392 L NO 975392L NO 975392 A NO975392 A NO 975392A NO 975392 A NO975392 A NO 975392A NO 975392 L NO975392 L NO 975392L
Authority
NO
Norway
Prior art keywords
making
bainitic structure
metallurgical
section
sum
Prior art date
Application number
NO975392A
Other languages
English (en)
Other versions
NO975392D0 (no
Inventor
Jacques Bellus
Gilles Pierson
Claude Pichard
Original Assignee
Ascometal Sa
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 Ascometal Sa filed Critical Ascometal Sa
Publication of NO975392D0 publication Critical patent/NO975392D0/no
Publication of NO975392L publication Critical patent/NO975392L/no

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
    • 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
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials 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 Strip Materials And Filament Materials (AREA)
  • Coating With Molten Metal (AREA)

Abstract

Et metallurgisk stålprodukt har en bainittisk struktur og ved 20°C har en strekkfasthet Rm £ 1000 MPa, et forhold mellom elastisitetsgrensen og strekkfastheten RpO,2/Rm > 0,/8, en sammentrekning Z > 55 % og en slagbøyeseighet Km > 45 J/cm?, idet det utgjøres av et stål hvis kjemiske sammensetning i vekt-% omfatter: 0,06 % <, C z 0,11 %, 1 % Z Mn :£ 1,7 %, 0,15 % ^ Si S 0,40 %, 0,025 % < S ^ 0,10 %, P < 0,025 %, O % < Ni <. 0,25 %, 0,5 % <, Cr <; 1,20 %, 0,08 % ^ Mo < 0,13 %, O % ^ Cu 5 0,25 %, 0,003 % 5 Al Z 0,035 %, O, % S Ti <; 0,035 %, O % <; V S 0,10 %, O % ^ Nb <. 0,06 %, 0,0008 % < B < 0,0040 %, 0,0060 % <, N < 0,011 %, og eventuelt et eller flere elementer valgt blant Te inntil 0,010 %, Se inntil 0,025 %, Bi inntil 0,13 %, Pb inntil 0,090 %, Ca inntil 0,0040 %, idet resten er jern og urenheter som stammer fra tilberedelsen. Den kjemiske sammensetning tilfredsstiller dessuten følgende forhold: Mn + Cr + Mo £ 2,1 % 0,015 % < V + Nb + Ti s 0,13 %, Al + Ti s 0,020 %, Mn/S > 12. Det er også beskrevet fremgangsmåter for fremstilling av et sådant metallurgisk stålprodukt.
NO975392A 1996-11-26 1997-11-24 Metallurgisk strÕlprodukt med bainittisk struktur og fremgangsmÕte for fremstilling av dette NO975392L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9614434A FR2756298B1 (fr) 1996-11-26 1996-11-26 Acier et procede pour la fabrication d'une piece de mecanique ayant une structure bainitique

Publications (2)

Publication Number Publication Date
NO975392D0 NO975392D0 (no) 1997-11-24
NO975392L true NO975392L (no) 1998-05-27

Family

ID=9498012

Family Applications (1)

Application Number Title Priority Date Filing Date
NO975392A NO975392L (no) 1996-11-26 1997-11-24 Metallurgisk strÕlprodukt med bainittisk struktur og fremgangsmÕte for fremstilling av dette

Country Status (6)

Country Link
EP (1) EP0845544B1 (no)
AT (1) ATE230443T1 (no)
DE (1) DE69718132T2 (no)
ES (1) ES2190514T3 (no)
FR (1) FR2756298B1 (no)
NO (1) NO975392L (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2802607B1 (fr) 1999-12-15 2002-02-01 Inst Francais Du Petrole Conduite flexible comportant des armures en acier bas carbone
FR2807068B1 (fr) * 2000-03-29 2002-10-11 Usinor Acier lamine a chaud a tres haute limite d'elasticite et resistance mecanique utilisable notamment pour la realisation de piece de vehicules automobiles
JP2003096534A (ja) * 2001-07-19 2003-04-03 Mitsubishi Heavy Ind Ltd 高強度耐熱鋼、高強度耐熱鋼の製造方法、及び高強度耐熱管部材の製造方法
TWI302572B (en) * 2003-09-30 2008-11-01 Nippon Steel Corp High yield ratio, high strength steel sheet, high yield ratio, high strength hot dip galvanized steel sheet and high yield ratio, high strength alloyed hot dip galvanized steel sheet and process for producing same
SI2103704T1 (sl) 2008-03-10 2012-11-30 Swiss Steel Ag Vroče valjani dolg proizvod in postopek za njegovo izdelavo
FR2958660B1 (fr) * 2010-04-07 2013-07-19 Ascometal Sa Acier pour pieces mecaniques a hautes caracteristiques et son procede de fabrication.
EP2453026A1 (de) 2010-11-10 2012-05-16 Swiss Steel AG Warmumgeformtes Stahlprodukt und Verfahren zu dessen Herstellung
EP2812455A1 (en) * 2012-02-10 2014-12-17 Ascometal Process for making a steel part, and steel part so obtained
US20160138142A1 (en) * 2014-11-18 2016-05-19 Air Liquide Large Industries U.S. Lp Materials of construction for use in high pressure hydrogen storage in a salt cavern

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524932A (en) * 1978-08-08 1980-02-22 Nippon Steel Corp Manufacture of bainite tough hardening steel
JPS59110721A (ja) * 1982-12-14 1984-06-26 Nippon Steel Corp 硫化物応力腐食割れ抵抗性に優れた低合金高張力鋼の製造方法
DE3571254D1 (en) * 1985-02-16 1989-08-03 Ovako Oy Method and steel alloy for producing high-strength hot forgings
GB8603500D0 (en) * 1986-02-13 1986-03-19 Hunting Oilfield Services Ltd Steel alloys
JPH0565540A (ja) * 1991-09-10 1993-03-19 Nissan Motor Co Ltd 高強度ボルトの製造方法
FR2685708B1 (fr) * 1991-12-30 1994-07-22 Ascometal Sa Produit long pour la fabrication par formage a froid, notamment par frappe a froid, de produits elabores tels que des boulons et procede de fabrication d'un produit a froid.
JPH06248341A (ja) * 1993-02-23 1994-09-06 Sumitomo Metal Ind Ltd 非調質鋼からの高強度高靱性鋼の製造方法
FR2741632B1 (fr) * 1995-11-27 1997-12-26 Ascometal Sa Acier pour la fabrication d'une piece forgee ayant une structure bainitique et procede de fabrication d'une piece

Also Published As

Publication number Publication date
ES2190514T3 (es) 2003-08-01
FR2756298B1 (fr) 1998-12-24
NO975392D0 (no) 1997-11-24
DE69718132D1 (de) 2003-02-06
FR2756298A1 (fr) 1998-05-29
ATE230443T1 (de) 2003-01-15
EP0845544B1 (fr) 2003-01-02
EP0845544A1 (fr) 1998-06-03
DE69718132T2 (de) 2003-10-09

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