Titanium alloy

Details Titanium alloy Titanium alloy

1985-12-23

1988-09-13

Rutledge, L. Dewayne

Metal treatment

Stock

Age or precipitation hardened or strengthened

420419, C22C 1400

Patent

active

047707267

ABSTRACT:
A weldable titanium alloy particularly intended for use at high temperatures and under conditions of high stress in aircraft engines, the alloy having the composition 5.6% aluminium, 4% tin, 4% zirconium, 1% niobium, 0.25% molybdenum, 0.5% silicon, 0.05% carbon, optionally containing 0.2% tungsten and being used in the heat treated condition. The heat treatment would normally comprise a solution treatment above the beta transus, typically at 1080.degree. C., and an ageing or stress relieving treatment at a temperature of approximately 650.degree. C. for approximately 24 hours.

REFERENCES:
patent: 4087292 (1978-05-01), Neal et al.
Ayvazian et al., "Influence of Carbon and Oxygen on Some Exploratory Ultra-High Strength Alpha-Beta Titanium Alloys", The Science, Technology and Application of Titanium, Pergamon Press, N.Y., 1970, pp. 897-899.
Quesne et al., "A Comparative Study of Creep Resistance and Thermal Stability of Alloys 685 and 6242 in Air and Vacuum", Titanium and Titanium Alloys, vol. 3, Plenum Press, N.Y., 1976, pp. 2015-2026.

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