Titanium aluminum alloys modified by chromium and niobium and me

Details Titanium aluminum alloys modified by chromium and niobium and me Titanium aluminum alloys modified by chromium and niobium and me

1988-06-03

1989-11-07

Roy, Upendra

Alloys or metallic compositions

Titanium base

Aluminum containing

75245, 148 127B, 148133, 428614, C22C 1400, C21D 100

Patent

active

048790923

ABSTRACT:
A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be a highly desirable effective aluminum concentration by addition of chromium and niobium according to the approximate formula --Ti.sub.50-46 Al.sub.46-50 Cr.sub.2 Nb.sub.2.

REFERENCES:
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patent: 4294615 (1981-10-01), Blackburn et al.
patent: 4639281 (1987-01-01), Sastry et al.
patent: 4661316 (1980-04-01), Hashimoto et al.
patent: 4746374 (1988-05-01), Froes et al.
Baker et al., Journal of Metals, Feb. 1988, pp. 28-31.
Whang et al., in ASM Symposium, Oct. 1986, Orlando, Fla., pp. 1-7.
Lipsitt, H. A., "Titanium Aluminides--An Overview", Mat. Res. Soc. Symposium Proc., vol. 39, Materials Research Society, (1985), pp. 351-364.
Sastry et al., Met. Trans. 8A, "Fatigue Deformation of TiAl Base Alloys", (1977), pp. 299-308.
Izvestiya Akademii Nauk SSSR, Metally, No. 3, (1984), pp. 164-168--Transln., ("Deformation & Failure in Titanium Aluminide", (1985), pp. 157-161).
Martin, P. L./Lipsitt, H. A./Nuhfer, N. T./Williams, J. C., "The Effects of Alloying on the Microstructure and Properties of Ti.sub.3 Al and TiAl", Titanium 80, (published by The American Society of Metals, Warrendale, Pa.), vol. 2, (1980), pp. 1245-1254.
Tsujimoto, T., "Research, Development, and Prospects of TiAl Intermetallic Compound Alloys", Titanium & Zirconium, vol. 33, No. 3, 159, (Jul. 1985), pp. 1-19.

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