Nickel aluminide base single crystal alloys

Details Nickel aluminide base single crystal alloys Nickel aluminide base single crystal alloys

1991-10-03

1992-12-01

Dean, R.

Metal treatment

Stock

Directionally solidified

420460, C22C 1903

Patent

active

051677326

ABSTRACT:
Nickel aluminide single crystal alloys having improved strength and ductility at elevated temperatures, produced by major elemental additions to strengthen the Ni.sub.3 Al phase by solid solutioning and/or secondary phase formation. The major elemental additions comprise (by weight) 7-20% Al, 0.5-9% molybedenum, 0.5-10% tungsten and 2-15% titanium. Optional minor elemental additions of boron, manganese, silcon and/or hafnium are preferred.

REFERENCES:
patent: 4801513 (1989-01-01), Duhl et al.

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