GB1250934A - - Google Patents

Info

Publication number
GB1250934A
GB1250934A GB1250934DA GB1250934A GB 1250934 A GB1250934 A GB 1250934A GB 1250934D A GB1250934D A GB 1250934DA GB 1250934 A GB1250934 A GB 1250934A
Authority
GB
United Kingdom
Prior art keywords
nitride
steel
microns
less
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
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 filed Critical
Publication of GB1250934A publication Critical patent/GB1250934A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • 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
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/08—Extraction of nitrogen
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

1,250,934. Nitride dispersed austenitic steel. ALLEGHENY LUDLUM STEEL CORP. May 30, 1969 [June 7, 1968j, No.27628/69. Heading C7D. An austenitic steel containing an element which will form a nitride with a free energy of formation greater than - 21, 000 cal/mol, is treated with a nitrogen - containing atmosphere at between 1,600‹F. and its melting point, to form dispersed nitride particles having an interparticle spacing of less than 10 microns (e.g. less than 2 microns) the element being chosen so that the nitride has a low solubility in the steel with a corresponding low tendency to grain coarsening at high temperatures. The additional element is preferably Ti, but may be Al, Nb or V; and the nitriding atmosphere may be NH 3 and/or N 2 which is substantially free from water and oxygen. Examples refer to the treatment of an 18% Cr, 12% Ni stainless steel containing 2% Ti.
GB1250934D 1968-06-07 1969-05-30 Expired GB1250934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73518668A 1968-06-07 1968-06-07

Publications (1)

Publication Number Publication Date
GB1250934A true GB1250934A (en) 1971-10-27

Family

ID=24954714

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1250934D Expired GB1250934A (en) 1968-06-07 1969-05-30

Country Status (7)

Country Link
BE (1) BE734045A (en)
CH (1) CH511290A (en)
DE (1) DE1928695C3 (en)
FR (1) FR2010519A1 (en)
GB (1) GB1250934A (en)
LU (1) LU58811A1 (en)
SE (1) SE362445B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148941A (en) * 1983-09-15 1985-06-05 Welsh Nat School Med Improvements in and relating to steel castings

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615904A (en) * 1969-02-28 1971-10-26 Allegheny Ludlume Steel Corp Method of improving nitride-strengthened stainless steel properties
FR2082749A5 (en) * 1970-03-25 1971-12-10 Allegheny Ludlum Steel Steel powder internally reinforced with a - dispersion of metallic nitride particles
US3663312A (en) * 1970-03-09 1972-05-16 Allegheny Ludlum Steel Nitride-strengthened, stainless steel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR729466A (en) * 1931-03-14 1932-07-25 Commentry Austenitic alloys nitrogen hardening process
US2300274A (en) * 1939-06-27 1942-10-27 Gen Electric Process for annealing austenitic steels
US3180727A (en) * 1962-02-20 1965-04-27 Du Pont Composition containing a dispersionhardening phase and a precipitation-hardening phase and process for producing the same
LU48989A1 (en) * 1965-07-05 1967-01-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148941A (en) * 1983-09-15 1985-06-05 Welsh Nat School Med Improvements in and relating to steel castings

Also Published As

Publication number Publication date
DE1928695B2 (en) 1981-04-23
BE734045A (en) 1969-12-04
DE1928695C3 (en) 1982-02-18
DE1928695A1 (en) 1970-01-15
CH511290A (en) 1971-08-15
FR2010519A1 (en) 1970-02-20
LU58811A1 (en) 1971-03-25
SE362445B (en) 1973-12-10

Similar Documents

Publication Publication Date Title
GB1314601A (en) Wear-resistant stainless steel
GB1138098A (en) Stainless steel
GB1112632A (en) Stainless steel
GB1210795A (en) High-strength low-alloy steel
GB1142582A (en) Improvements in or relating to steel
GB1245158A (en) Improvements in nickel-chromium alloys
GB1250934A (en)
GB1159969A (en) Steel and Weld Metal
GB1263008A (en) Internally nitrided powder
GB1242871A (en) Austenitic heat-resistant alloy steel
GB1330543A (en) Iron-cobalt-vanadium alloy
GB1132990A (en) Iron base alloy
GB1331178A (en) Austenitic alloy
GB1190515A (en) Austenitic Heat Resisting Steel.
ES264477A1 (en) Improvements in or relating to austenitic stainless steels
GB1449003A (en) Acid-resistant steel alloy
GB1151178A (en) Chromium-Iron-Nickel Alloys when used in Corrosive Atmospheres
Pradhan Rapid Annealing of Cold Rolled Rephosphorized Steels Containing Silicon, Niobium and Vanadium
Mayer et al. Review of the Known Effects of Trace Elements in Steels and Alloys Containing Ni
GB1366894A (en) Ferrous alloys
GB1058146A (en) Improvements in or relating to alloy steels
FR2032383A1 (en) Nuclear fuel containing lanthanides
GB1118184A (en) Improvements in or relating to thermoelectric devices
GB1165491A (en) Improved Sintered Alloys
GB883024A (en) Improvements relating to alloy steel

Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee