Tri-titanium aluminide alloys containing at least eighteen atom

Details Tri-titanium aluminide alloys containing at least eighteen atom Tri-titanium aluminide alloys containing at least eighteen atom

1989-03-20

1991-07-16

Roy, Upendra

Alloys or metallic compositions

Titanium base

Aluminum containing

420421, 420426, 420580, C22C 1400

Patent

active

050323571

ABSTRACT:
An improved titanium aluminide alloy contains from about 18 to 30 atomic percent aluminum, about 34 to 18 atomic percent niobium, with the balance titanium. In alloys of this invention a substatial portion of the microstructure, comprising at least about 50% of the volume fraction, is an orthorhombic phase.

REFERENCES:
patent: 3411901 (1968-11-01), Winter
patent: 4292077 (1981-09-01), Blackburn et al.
patent: 4716020 (1987-12-01), Blackburn et al.
patent: 4746374 (1988-05-01), Froes et al.
patent: 4788035 (1988-11-01), Gigliotti et al.
Strychor et al., Met. Trans. 19A (Feb. 1988), 225.
D. Banerjee, A. K.; Gogia, T. K.; Nandi and V. A. Joshi; "A New Ordered Orthorombic Phase in a Ti.sub.3 Al-Nb Alloy", Aug. 10, 1987, Acta Metall., vol. 36, pp. 871-882, 1988.

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