Niobium and chromium containing titanium aluminide rendered cast

Details Niobium and chromium containing titanium aluminide rendered cast Niobium and chromium containing titanium aluminide rendered cast

1990-07-02

1992-01-14

Roy, Upendra

Alloys or metallic compositions

Titanium base

Aluminum containing

420417, 148421, C22C 1400

Patent

active

050808605

ABSTRACT:
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. Property improvements are also achieved.

REFERENCES:
patent: 3203794 (1965-08-01), Jaffee et al.
patent: 4879092 (1989-11-01), Huang
patent: 4915903 (1990-04-01), Brupbacher et al.

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