Niobium containing titanium aluminide rendered castable by boron

Details Niobium containing titanium aluminide rendered castable by boron Niobium containing titanium aluminide rendered castable by boron

1990-09-26

1992-01-21

Roy, Upendra

Alloys or metallic compositions

Titanium base

Aluminum containing

148421, 420421, C22C 1400

Patent

active

050826247

ABSTRACT:
A composition for providing improved castability in a gamma titanium aluminide is taught. The method involves adding inclusions of boron to the titanium aluminide containing higher concentrations of niobium. Boron additions are made in concentrations between 0.5 and 2 atomic percent. Fine grain equiaxed microstructure is found from solidified melt. Property improvements are also achieved.

REFERENCES:
patent: 4842820 (1989-06-01), Huang et al.

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