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Progress in the Development of High Strength Titanium Alloys
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 1, 1967 by SAE International in United States
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Engineering development has always been restricted by the limitations of structural materials. In the development of large fan stage compressor blades, material of high strength to density and modulus to density ratios have been required. This paper discusses use of titanium in the 170 and 190 ksi yield strength alloys in these applications. Materials, procedures, and results of the Pratt & Whitney development program are discussed.
The Ti-6Al-6V-2Sn alloy appears most promising in meeting the desired 170 ksi yield strength while maintaining reasonable fracture toughness. The relationship between toughness, fatigue, and other mechanical properties is incompletely understood. However, with high tensile preloads, a strong positive correlation between toughness and fatigue strength seems quite probable.
CitationRuckle, D., Donachie, M., and Sprague, R., "Progress in the Development of High Strength Titanium Alloys," SAE Technical Paper 670335, 1967, https://doi.org/10.4271/670335.
- Morley J., “Strong Fibres and Fibre-Reinforced Metals.” Proc. Roy. Soc., Vol. 282A, 1964, p. 43.
- Omer G. M. and Hartbower C. F., “Sheet Fracture Toughness Evaluated by Charpy Impact and Slow Bend.” Welding Journal, Vol. 40, September 1961, pp. 4055-4165.
- Pearson W. B., “Handbook of Lattice Spacings and Structures of Metals.”New York: Pergamon Press, 1958, p. 949.
- Hickey, C. F. Jr., “Effect of Microstructure and Cooling Rate on the Mechanical Properties of Ti-6Al-6V-2Sn.” Journal of Materials, Vol. 1, No. 1, March 1966, p. 89.
- Griest A. J., Doig J. R., and Frost P. D., “Correlation of Transformation Behavior and Mechanical Properties of Several Titanium-Base Alloys.” Transactions, American Institute of Mining, Metallurgical, and Petroleum Engineers, Vol. 215, 1959, pp. 627-632.