EP0123406A3 - Low alloy steel plate and process for production thereof - Google Patents

Low alloy steel plate and process for production thereof Download PDF

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Publication number
EP0123406A3
EP0123406A3 EP84301762A EP84301762A EP0123406A3 EP 0123406 A3 EP0123406 A3 EP 0123406A3 EP 84301762 A EP84301762 A EP 84301762A EP 84301762 A EP84301762 A EP 84301762A EP 0123406 A3 EP0123406 A3 EP 0123406A3
Authority
EP
European Patent Office
Prior art keywords
steel
hot
thickness
reduction
low alloy
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP84301762A
Other languages
German (de)
French (fr)
Other versions
EP0123406A2 (en
Inventor
Rodney J. Jesseman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Armco Inc
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Publication of EP0123406A2 publication Critical patent/EP0123406A2/en
Publication of EP0123406A3 publication Critical patent/EP0123406A3/en
Withdrawn legal-status Critical Current

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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • C21D2211/005—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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation

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)

Abstract

Low alloy steel shape of at least 4.8 mm thickness is produced by providing a steel consisting essentially of from about 0.02% to 0.07% carbon, 1.2% to 2.0% manganese, 0.020% maximum sulfur, up to 0.5% silicon, 0.1% to 0.4% molybdenum, 0.01% to 0.1% columbium, about 0.01% to 0.10% acid soluble aluminum, about 0.8% to 2.0% copper, about 0.4% to 2.0% nickel, residual chromium, and balance iron; hot reducing the steel to a desired final thickness with a total reduction in thickness of at least 30% while within the temperature range of about 760° to 927°C whereby to avoid substantial recrystallization of austenite and to obtain a pre­ dominant heavily deformed austenite phase; and cooling at a rate which transforms the austenite phase to a predominantly fine acicular ferrite and lower-bainite phase. The steel may also be precipitation hardened, or may be hot reduced either by the above-described controlled hot reduction or by con­ ventional hot reduction, austenitized, quenched, and precipi­ tation hardened. The product has high strength, improved low temperature toughness and excellent weldability.
EP84301762A 1983-03-17 1984-03-15 Low alloy steel plate and process for production thereof Withdrawn EP0123406A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47635383A 1983-03-17 1983-03-17
US476353 1983-03-17

Publications (2)

Publication Number Publication Date
EP0123406A2 EP0123406A2 (en) 1984-10-31
EP0123406A3 true EP0123406A3 (en) 1987-10-07

Family

ID=23891504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84301762A Withdrawn EP0123406A3 (en) 1983-03-17 1984-03-15 Low alloy steel plate and process for production thereof

Country Status (6)

Country Link
EP (1) EP0123406A3 (en)
JP (1) JPS605822A (en)
KR (1) KR840007899A (en)
BR (1) BR8401222A (en)
CA (1) CA1207639A (en)
ES (1) ES530726A0 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3883051T2 (en) * 1987-04-24 1993-12-02 Nippon Steel Corp Process for the production of steel sheets with good toughness at low temperatures.
DE4033700C1 (en) * 1990-10-19 1992-02-06 Stahlwerke Peine-Salzgitter Ag, 3150 Peine, De
JP2634961B2 (en) * 1991-03-06 1997-07-30 新日本製鐵株式会社 Manufacturing method of 80kgf / mm2 class high strength steel with excellent weldability
CH687879A5 (en) * 1993-12-01 1997-03-14 Met Cnam Paris Max Willy Tisch Reinforcement, machine, apparatus and Metallbaustaehle in fines Dumaguete with stable anticorrosive coating.
AU3920995A (en) * 1994-11-28 1996-06-19 Max-Willy Tischhauser Process for producing high quality, close-grained structural steel with a stable anticorrosive layer for metal structures apparatus, machines and armouring
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
US5810951A (en) * 1995-06-07 1998-09-22 Ipsco Enterprises Inc. Steckel mill/on-line accelerated cooling combination
US6309482B1 (en) 1996-01-31 2001-10-30 Jonathan Dorricott Steckel mill/on-line controlled cooling combination
CN100335670C (en) * 2002-02-07 2007-09-05 杰富意钢铁株式会社 High strength steel plate and method for production thereof
CN101765470A (en) * 2007-05-06 2010-06-30 纽科尔公司 A thin cast strip product with microalloy additions, and method for making the same
CN115838904A (en) * 2022-12-20 2023-03-24 衡阳华菱钢管有限公司 Method for manufacturing 850 MPa-grade high-strength high-toughness seamless steel pipe

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539404A (en) * 1967-05-15 1970-11-10 Youngstown Sheet And Tube Co Method of making a low alloy steel
US3726723A (en) * 1970-05-11 1973-04-10 American Metal Climax Inc Hot-rolled low alloy steels
GB1338285A (en) * 1970-11-18 1973-11-21 Nippon Kokan Kk High tensile strength low alloy steels
CA988751A (en) * 1974-07-22 1976-05-11 Madhavarao Krishnadev Extra low-carbon copper-manganese - columbium high strength steel
US3955971A (en) * 1974-12-11 1976-05-11 United States Steel Corporation Alloy steel for arctic service
GB1436846A (en) * 1973-03-16 1976-05-26 Int Nickel Ltd Steels
US4008103A (en) * 1970-05-20 1977-02-15 Sumitomo Metal Industries, Ltd. Process for the manufacture of strong tough steel plates
US4184898A (en) * 1977-07-20 1980-01-22 Nippon Kokan Kabushiki Kaisha Method of manufacturing high strength low alloys steel plates with superior low temperature toughness

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933168B2 (en) * 1977-06-10 1984-08-14 新日本製鐵株式会社 Manufacturing method for high-strength, high-toughness special-shaped steel pipes
JPS6017806B2 (en) * 1977-06-10 1985-05-07 新日本製鐵株式会社 Manufacturing method for specially shaped steel pipes with excellent toughness

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539404A (en) * 1967-05-15 1970-11-10 Youngstown Sheet And Tube Co Method of making a low alloy steel
US3726723A (en) * 1970-05-11 1973-04-10 American Metal Climax Inc Hot-rolled low alloy steels
US4008103A (en) * 1970-05-20 1977-02-15 Sumitomo Metal Industries, Ltd. Process for the manufacture of strong tough steel plates
GB1338285A (en) * 1970-11-18 1973-11-21 Nippon Kokan Kk High tensile strength low alloy steels
GB1436846A (en) * 1973-03-16 1976-05-26 Int Nickel Ltd Steels
CA988751A (en) * 1974-07-22 1976-05-11 Madhavarao Krishnadev Extra low-carbon copper-manganese - columbium high strength steel
US3955971A (en) * 1974-12-11 1976-05-11 United States Steel Corporation Alloy steel for arctic service
US4184898A (en) * 1977-07-20 1980-01-22 Nippon Kokan Kabushiki Kaisha Method of manufacturing high strength low alloys steel plates with superior low temperature toughness

Also Published As

Publication number Publication date
KR840007899A (en) 1984-12-11
JPS605822A (en) 1985-01-12
CA1207639A (en) 1986-07-15
ES8503725A1 (en) 1985-03-01
BR8401222A (en) 1984-10-23
EP0123406A2 (en) 1984-10-31
ES530726A0 (en) 1985-03-01

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Effective date: 19880408

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Inventor name: JESSEMAN, RODNEY J.