Boron-modified titanium aluminum alloys and method of preparatio

Details Boron-modified titanium aluminum alloys and method of preparatio Boron-modified titanium aluminum alloys and method of preparatio

1987-12-28

1989-06-27

Roy, Upendra

Alloys or metallic compositions

Titanium base

Aluminum containing

420419, 420421, C25C 306, C22C 1400

Patent

active

048428205

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 higly desirable effective aluminum concentration by addition of boron according to the approximate compositions displayed in the shaded area of FIG. 10.

REFERENCES:
patent: 3203794 (1965-08-01), Jaffee et al.
patent: 4514268 (1985-04-01), DeAngelis
patent: 4661316 (1980-04-01), Hashimoto et al.
"Research, Development, and Prospects of TiAl Intermetallic Compound Alloys" by Tokuzo Tsujimoto, Titanium and Zirconium, vol. 33, No. 3, 159 Jul., 1985, pp. 1-19.
"Titanium Aluminides--An Overview" by Harry A. Lipsitt, Mat. Res. Soc. Symposium, Proc. Vol. 39, 1985 Materials Research Society, pp. 351-364.
"Effect of Rapid Solidification in Ll.sub.o TiAl Compound Alloys" by S. H. Whang et al., ASM Symposium Proceedings on Enhanced Properties in Struc, Metals Via Rapid Solidification, Materials Week, 1986, Oct. 1986, pp. 1-7.
Izvestiya Akademii Nauk SSR, Metally, No. 3, pp. 164-168, 1984.
"The Effects of Alloying on the Microstructure and Properties of Ti.sub.3 Al and TiAl", P. L. Martin, H. A. Lipsitt, N. T. Nuhfer & J. C. Williams, Titanium 80, (Published by the American Society of Metals, Warrendale, PA), vol. 2, pp. 1245-1254, 1980.

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