Titanium alloys of the TiAl type

Details Titanium alloys of the TiAl type Titanium alloys of the TiAl type

1979-07-25

1981-10-13

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

148 115F, 148 127B, 148 325, 148133, C22C 1400, C21D 100

Patent

active

042946158

ABSTRACT:
Cast and forged titanium alloys suited for use at temperatures over 600.degree. C. are based on TiAl gamma phase structure. Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260.degree. C. and below, thereby making them fabricable and suited for engineering applications. Disclosed are alloys having weight percent compositions of 31-36 aluminum, 0-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0-3V, bal Ti). The inclusion of about 0.1 weight percent carbon improves creep rupture strength. To obtain high tensile strength, the alloys are forged at about 1025.degree. C. and aged at about 900.degree. C.; to obtain higher creep rupture strength and tensile ductility, a solution anneal at about 1150.degree. C. is interposed before aging.

REFERENCES:
patent: 2781261 (1957-02-01), Kamlet
patent: 2880087 (1959-03-01), Jaffee
patent: 2880089 (1959-03-01), Vordahl
patent: 2881105 (1959-04-01), Gullett
patent: 2939786 (1960-06-01), Ginsberg et al.
patent: 3008823 (1961-11-01), McAndrew
patent: 3203794 (1965-08-01), Jaffee et al.
patent: 3540878 (1970-11-01), Levine et al.
Jordan et al., "Approximate Phase . . . Titanium-Vanadium-Aluminum", Trans. Am. Soc. Metals, 1955, pp. 1-16.
Bumps et al., "Titanium-Aluminum System", Trans. AIME, Jun., 1952, Journal of Metals, pp. 609-614.

Affiliated with

Also associated with

Rating

Titanium alloys of the TiAl type does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Titanium alloys of the TiAl type, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Titanium alloys of the TiAl type will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-928983