GB983751A - Improvements in or relating to steels and methods for their manufacture and heat treatment - Google Patents

Improvements in or relating to steels and methods for their manufacture and heat treatment

Info

Publication number
GB983751A
GB983751A GB9479/61A GB947961A GB983751A GB 983751 A GB983751 A GB 983751A GB 9479/61 A GB9479/61 A GB 9479/61A GB 947961 A GB947961 A GB 947961A GB 983751 A GB983751 A GB 983751A
Authority
GB
United Kingdom
Prior art keywords
less
steels
steel
nitrides
dispersed
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
GB9479/61A
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Publication of GB983751A publication Critical patent/GB983751A/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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

Steels, the properties of which are enhanced by the presence of dispersed nitrides, are produced by blowing through the molten steel at a pressure not exceeding 5 mgm./cm.2 a stream of nitrogen with or without inert gas, in which calcium cyanamide may be suspended, and following this with the addition of one or more of aluminium, niobium or beryllium in such amount that the steel contains 0.01-0.1% by weight of each of the nitrides of those metals added Titanium and/or zirconium may then be added in an amount of 0.03-0.3% each to combine with excess nitrogen and leave 0.01-0.1% of each nitride dispersed in the steel, the remainder separating out. The steels treated by this process contain in percentage by weight: .C.less than 0.35 .Mn.less than 1 .Si.less than 1 .Ni, Cr, Mo, V.less than 1 of each .S.less than 0.035 .P.less than 0.035 .Fe.balance Precipitation of dispersed nitrides is brought about by hot working the steel, in the range 1100-600 DEG C., and may be enhanced by a further heating at 950 DEG C.
GB9479/61A 1960-03-31 1961-03-15 Improvements in or relating to steels and methods for their manufacture and heat treatment Expired GB983751A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1118960 1960-03-31
JP1118860 1960-03-31
JP1119060 1960-03-31

Publications (1)

Publication Number Publication Date
GB983751A true GB983751A (en) 1965-02-17

Family

ID=27279314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9479/61A Expired GB983751A (en) 1960-03-31 1961-03-15 Improvements in or relating to steels and methods for their manufacture and heat treatment

Country Status (4)

Country Link
US (1) US3259488A (en)
BE (1) BE602103A (en)
DE (1) DE1433107B2 (en)
GB (1) GB983751A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328211A (en) * 1963-12-05 1967-06-27 Ishikawajima Harima Heavy Ind Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made
JPS4935485B1 (en) * 1964-06-22 1974-09-24
US3357822A (en) * 1964-06-26 1967-12-12 Sumitomo Metal Ind Low-carbon aluminum killed steel for high temperature applications
US3320099A (en) * 1964-08-12 1967-05-16 United States Steel Corp Method of processing steel
FR1515961A (en) * 1965-10-26 1968-03-08 Fuji Iron & Steel Co Ltd Manufacturing processes of high notch resistance steel for welded structures and new products thus obtained
US4054447A (en) * 1973-02-16 1977-10-18 Gennosuke Tenmyo Steel resistant to intergranular stress corrosion cracking
DE3604789C1 (en) * 1986-02-15 1987-08-20 Thyssen Stahl Ag Quenched and tempered steel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174740A (en) * 1934-03-17 1939-10-03 Jones & Laughlin Steel Corp Sensitivity controlled steel and the manufacture thereof
US2603562A (en) * 1943-11-27 1952-07-15 Boehler & Co Ag Geb Nitrogen containing steels with high creep resistance and high tensile strength at elevated temperatures
US2482948A (en) * 1946-11-11 1949-09-27 Doris Wright Method for the production of columbium containing steel
US2501138A (en) * 1948-11-17 1950-03-21 W J Holliday & Company Inc Globular inclusion control for steel making
US2562543A (en) * 1950-01-06 1951-07-31 Allegheny Ludlum Steel Shock resistant alloy steel
US2602736A (en) * 1950-01-12 1952-07-08 Allegheny Ludlum Steel Oxidation-carburization resistant alloy
US2563672A (en) * 1950-02-07 1951-08-07 United States Steel Corp Machinability of quench-hardened alloy steels containing retained austenite
US2938820A (en) * 1958-04-24 1960-05-31 Selas Corp Of America Method of spheroidizing steel by rapid heating

Also Published As

Publication number Publication date
US3259488A (en) 1966-07-05
DE1433107A1 (en) 1969-01-16
BE602103A (en) 1961-07-17
DE1433107B2 (en) 1971-11-11

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