GB903801A - High strength steel - Google Patents

High strength steel

Info

Publication number
GB903801A
GB903801A GB1136359A GB1136359A GB903801A GB 903801 A GB903801 A GB 903801A GB 1136359 A GB1136359 A GB 1136359A GB 1136359 A GB1136359 A GB 1136359A GB 903801 A GB903801 A GB 903801A
Authority
GB
United Kingdom
Prior art keywords
steel
martensite
temperature
quenched
working
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
GB1136359A
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.)
Ford Motor Co
Original Assignee
Ford Motor Co
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 Ford Motor Co filed Critical Ford Motor Co
Publication of GB903801A publication Critical patent/GB903801A/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
    • C22C38/18—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
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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

Abstract

A process of forming and heat treating alloy steel exhibiting metastable austenite under conditions of working when quenched to a temperature between pearlite formation and baurite formation comprises quenching the austenitic steel to the selected temperature, working the steel at that temperature to effect a deformation of at least 25% at least locally, quenching the worked steel to a temperature at which martensite is formed, and tempering the martensite to produce a fine-grained martensitic structure. The steel may be quenched into a molten lead or molten salt bath at the selected temperature, i.e. 600 DEG to 1100 DEG F., and subjected then to some form of working. It may then be quenched in water to form martensite and the martensite tempered at 150 DEG to 700 DEG F. The steel used may be within the range 0.1 to 0.8% C, 2.0-6.0% Ni, 0.75-3.0% Cr with the balance Fe and unavoidable impurities. It may also contain 1.4-1.47% Si and B, Mn, N, Mo, V and W. The austenite is preferably stabilized with Cr or Co and Ni.
GB1136359A 1958-04-04 1959-04-03 High strength steel Expired GB903801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72648558A 1958-04-04 1958-04-04

Publications (1)

Publication Number Publication Date
GB903801A true GB903801A (en) 1962-08-22

Family

ID=24918801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1136359A Expired GB903801A (en) 1958-04-04 1959-04-03 High strength steel

Country Status (2)

Country Link
GB (1) GB903801A (en)
SE (1) SE301332B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006045461A1 (en) * 2004-10-26 2006-05-04 Schaeffler Kg Mechanically-stressed actuator or bearing component made from mechanically-hardened steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006045461A1 (en) * 2004-10-26 2006-05-04 Schaeffler Kg Mechanically-stressed actuator or bearing component made from mechanically-hardened steel

Also Published As

Publication number Publication date
SE301332B (en) 1968-06-04

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