GB1074576A - Heat treatment of steels - Google Patents

Heat treatment of steels

Info

Publication number
GB1074576A
GB1074576A GB37540/63A GB3754063A GB1074576A GB 1074576 A GB1074576 A GB 1074576A GB 37540/63 A GB37540/63 A GB 37540/63A GB 3754063 A GB3754063 A GB 3754063A GB 1074576 A GB1074576 A GB 1074576A
Authority
GB
United Kingdom
Prior art keywords
zones
ageing
underageing
overageing
treatment
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
GB37540/63A
Inventor
Alan George Haynes
George Mayer
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.)
Inco Ltd
Original Assignee
Inco Ltd
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 Inco Ltd filed Critical Inco Ltd
Priority to GB37540/63A priority Critical patent/GB1074576A/en
Priority to US398414A priority patent/US3355333A/en
Publication of GB1074576A publication Critical patent/GB1074576A/en
Expired 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
    • C22C38/08—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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/001—Heat treatment of ferrous alloys containing Ni
    • 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
    • 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
    • C21D2221/00—Treating localised areas of an article

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 Sheet Steel (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Articles of a steel which is age-hardenable in the martensitic state are solution treated, cooled to retain the solution thus formed, and then subjected to a localized ageing treatment whereby different hardness levels are developed in different zones of the article. This may be achieved by differential ageing of the zones, by overageing or underageing those zones to have a lower hardness, or by overageing or underageing the whole article and subsequently resolution treating and ageing the zones to have higher hardness. The invention may be applied to the steels disclosed in Specifications 936,557, 948,354 and 948,355, and is stated to be particularly relevant to the treatment of gears, metal working equipment, gun barrels and armour plate. Heating may be by fluidized bed molten metal, molten salt, flame resistance or induction heating.
GB37540/63A 1963-09-24 1963-09-24 Heat treatment of steels Expired GB1074576A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB37540/63A GB1074576A (en) 1963-09-24 1963-09-24 Heat treatment of steels
US398414A US3355333A (en) 1963-09-24 1964-09-22 Selective hardening of age-hardenable alloys and articles produced thereby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37540/63A GB1074576A (en) 1963-09-24 1963-09-24 Heat treatment of steels

Publications (1)

Publication Number Publication Date
GB1074576A true GB1074576A (en) 1967-07-05

Family

ID=10397229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37540/63A Expired GB1074576A (en) 1963-09-24 1963-09-24 Heat treatment of steels

Country Status (2)

Country Link
US (1) US3355333A (en)
GB (1) GB1074576A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001014600A1 (en) * 1999-08-19 2001-03-01 Heinrich Friederich Semifinished and finished products made of austenitic special steel and method for the production thereof
EP1213363A1 (en) * 1999-06-23 2002-06-12 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method for making wear-resistant surface layers on precipitation hardenable materials
GB2424422A (en) * 2005-03-23 2006-09-27 Alstom Technology Ltd Precipitation hardening of a steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9573432B2 (en) 2013-10-01 2017-02-21 Hendrickson Usa, L.L.C. Leaf spring and method of manufacture thereof having sections with different levels of through hardness

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2397997A (en) * 1944-06-21 1946-04-09 Ernest H Wyche Providing inherently aging chromium-nickel stainless steel with different tempers
GB744144A (en) * 1952-01-28 1956-02-01 Stahl & Walzwerke Rasselstein Method of increasing the stiffness of the tops and bottoms of containers which are subjected to internal pressure
US2908565A (en) * 1956-08-29 1959-10-13 Continental Copper & Steel Ind High temperature alloy
US3093518A (en) * 1959-09-11 1963-06-11 Int Nickel Co Nickel alloy
US3093519A (en) * 1961-01-03 1963-06-11 Int Nickel Co Age-hardenable, martensitic iron-base alloys

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1213363A1 (en) * 1999-06-23 2002-06-12 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method for making wear-resistant surface layers on precipitation hardenable materials
WO2001014600A1 (en) * 1999-08-19 2001-03-01 Heinrich Friederich Semifinished and finished products made of austenitic special steel and method for the production thereof
US6811622B1 (en) 1999-08-19 2004-11-02 Heinrich Friederich Semifinished and finished products made of austenitic special steel and method for the production thereof
GB2424422A (en) * 2005-03-23 2006-09-27 Alstom Technology Ltd Precipitation hardening of a steel

Also Published As

Publication number Publication date
US3355333A (en) 1967-11-28

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