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GB1453064A - Processing steel to a bainitic structure - Google Patents

Processing steel to a bainitic structure

Info

Publication number
GB1453064A
GB1453064A GB5670073A GB5670073A GB1453064A GB 1453064 A GB1453064 A GB 1453064A GB 5670073 A GB5670073 A GB 5670073A GB 5670073 A GB5670073 A GB 5670073A GB 1453064 A GB1453064 A GB 1453064A
Authority
GB
United Kingdom
Prior art keywords
transformation
curve
knee
initiation
dec
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.)
Expired
Application number
GB5670073A
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.)
Bethlehem Steel Corp
Original Assignee
Bethlehem 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
Application filed by Bethlehem Steel Corp filed Critical Bethlehem Steel Corp
Publication of GB1453064A publication Critical patent/GB1453064A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

1453064 Working at specific temperatures BETHLEHEM STEEL CORP 6 Dec 1973 [20 Dec 1972] 56700/73 Heading B3V [Also in Division C7] A steel containing 0À03-0À65% C, one or both of Mo and Cr, and one or more of B, Mn and Ni, balance Fe, the composition being such that the knee of the curve indicating commencement of the pearlite transformation on the isothermal transformation curve is displaced to the right of the knee of the bainite transformation curve, is austenitized at 1500- 2200‹ F. and then subjected to a number of hot working operations at progressively decreasing temperatures, the first operation being carried out above 1500‹F. and the final one after initiation, but before completion of the bainite transformation. Preferably the initial operation is at 1600-2200‹ F. and there are at least four steps before the initiation of bainite transformation. Preferably the alloy contains #0À25% Mo, or #0À75% Cr if Mo <0À25%, and may contain sufficient ferrite stabilizer (Mo, Cr, V, Si, Nb, Ti) to retard the pearlite transformation.
GB5670073A 1972-12-20 1973-12-06 Processing steel to a bainitic structure Expired GB1453064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00316962A US3806378A (en) 1972-12-20 1972-12-20 As-worked bainitic ferrous alloy and method

Publications (1)

Publication Number Publication Date
GB1453064A true GB1453064A (en) 1976-10-20

Family

ID=23231481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5670073A Expired GB1453064A (en) 1972-12-20 1973-12-06 Processing steel to a bainitic structure

Country Status (7)

Country Link
US (1) US3806378A (en)
JP (1) JPS4990621A (en)
CA (1) CA1014772A (en)
DE (1) DE2362878A1 (en)
FR (1) FR2211531B1 (en)
GB (1) GB1453064A (en)
IT (1) IT1000369B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA952415A (en) * 1970-05-20 1974-08-06 Eiji Miyoshi Process and apparatus for manufacture of strong tough steel plates
JPS56488B2 (en) * 1973-03-19 1981-01-08
JPS5548572B2 (en) * 1973-08-15 1980-12-06
DE2537702C3 (en) * 1975-08-23 1988-02-11 Thyssen Edelstahlwerke AG, 4000 Düsseldorf Use of a low-alloy tempering steel
US4088511A (en) * 1976-07-29 1978-05-09 Lasalle Steel Company Steels combining toughness and machinability
JPS55500910A (en) * 1978-11-15 1980-11-06
US4343661A (en) * 1978-11-15 1982-08-10 Caterpillar Tractor Co. Method of making a low temperature bainite steel alloy gear
DE3201204C2 (en) * 1982-01-16 1983-12-22 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg "Use of a carbon-manganese steel for components with high strength and toughness with simple heat treatment"
GB8320622D0 (en) * 1983-07-30 1983-09-01 British Steel Corp Alloy steels
SE8603897L (en) * 1985-09-19 1987-03-20 Man Nutzfahrzeuge Gmbh PROCEDURE FOR THE MANUFACTURE OF STEEL CONSTRUCTIONS
JP2505999B2 (en) * 1991-07-09 1996-06-12 新日本製鐵株式会社 Ultra high temperature hot forging method
FR2679924B1 (en) * 1991-07-30 1993-12-10 Ascometal METHOD FOR MANUFACTURING A THIN-WALLED STEEL TUBE, STEEL FOR PRODUCING THE SAME, AND TUBE FOR THE CYCLE FRAME OBTAINED.
US5542995A (en) * 1992-02-19 1996-08-06 Reilly; Robert Method of making steel strapping and strip and strapping and strip
DE102012221607A1 (en) * 2012-11-27 2014-05-28 Robert Bosch Gmbh Metallic material
CN103468906A (en) * 2013-09-17 2013-12-25 北京科技大学 Process for preparing 2000 MPa nano-scale bainitic steel through low temperature rolling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1078411A (en) * 1952-03-12 1954-11-18 Philips Nv Refining process for quenching steel

Also Published As

Publication number Publication date
FR2211531A1 (en) 1974-07-19
JPS4990621A (en) 1974-08-29
CA1014772A (en) 1977-08-02
FR2211531B1 (en) 1979-03-30
US3806378A (en) 1974-04-23
IT1000369B (en) 1976-03-30
DE2362878A1 (en) 1974-07-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee