NIOBIUM AND CHROMIUM CONTAINING TITANIUM ALUMINIDE RENDERED CASTABLE BY BORON INOCULATIONS

NIOBIUM AND CHROMIUM CONTAINING TITANIUM ALUMINIDE RENDERED CASTABLE BY BORON INOCULATIONS

A method for providing improved castability in a gamma titanium aluminide is taught. The method involves adding inclusions of boron to the titanium aluminide containing chromium and niobium. Boron additions are made in concentrations between 0.5 and 2 atomic percent. Fine grain equiaxed microstructu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: HUANG, SHYHIN
Format: Patent
Sprache:eng ; fre
Schlagworte:
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:A method for providing improved castability in a gamma titanium aluminide is taught. The method involves adding inclusions of boron to the titanium aluminide containing chromium and niobium. Boron additions are made in concentrations between 0.5 and 2 atomic percent. Fine grain equiaxed microstructure is found from solidified melt. Prop- erty improvements are also achieved.