Chromium-modified titanium aluminum alloys and method of prepara

Details Chromium-modified titanium aluminum alloys and method of prepara Chromium-modified titanium aluminum alloys and method of prepara

1987-12-28

1989-06-27

Roy, Upendra

Alloys or metallic compositions

Titanium base

Aluminum containing

148421, 420407, 420421, C22C 1400, C21D 100

Patent

active

048428191

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 according to the approximate formula Ti.sub.52-50 Al.sub.46-48 Cr.sub.2.

REFERENCES:
patent: 3203794 (1965-08-01), Jaffee et al.
patent: 4294615 (1981-10-01), Blackburn et al.
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.0 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 SSSR, 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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