DIRECTIONALLY SOLIDIFIED EUTECTIC TYPE ALLOYS WITH ALIGNED DELTA PHASE

DIRECTIONALLY SOLIDIFIED EUTECTIC TYPE ALLOYS WITH ALIGNED DELTA PHASE

A nickel alloy containing columbium and/or tantalum and chromium and/or aluminum and displaying eutectic-type behavior is unidirectionally cast under conditions resulting in coupled growth, providing a lamellar biphase or multiphase microstructure displaying about 25-40 percent of a substantially al...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: LEMKEY F,US, THOMPSON E,US
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:A nickel alloy containing columbium and/or tantalum and chromium and/or aluminum and displaying eutectic-type behavior is unidirectionally cast under conditions resulting in coupled growth, providing a lamellar biphase or multiphase microstructure displaying about 25-40 percent of a substantially aligned delta phase, Ni3Cb, Ni3Ta or Ni3(Cb,Ta), in a nickel alloy matrix containing chromium and/or aluminum.