Abstract
In an effort to extend the available manufacturing technologies for Ti3Albase aluminides, the potential success of a new hot-rolling process for the production of high-quality foils has been investigated. Processing of Super-α2 aluminide foils approximately 0.15 mm thick takes full advantage of the combined benefits of controlled rolling and a unique pack rolling process. Based on the results of a study of phase transformation kinetics, microstructure and hardness of continuously-cooled and isothermally transformed specimens, the processing parameters are optimized to provide enhanced surface quality and superior ductilities in the as-rolled condition.
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References
F.H. Froes, “Structural Aerospace Materials: The Right Stuff for the 21st Century,” Materials Edge, May/June (1989), pp. 17–44.
F.W. Tortolano, “Birth of a Space-Age Plane,” Design News, 4 (1988).
R.A. Sprague, “Future Aerospace-Materials Directions,” Advanced Materials and Processes, 1 (1988), pp. 67–73.
“Technology Forecast 1988,” Advanced Materials and Processes, 1 (1988), p. 8.
J.D. Destefani, “Advances in Intermetallics,” Advanced Materials and Processes, 2 (1989), pp. 37–41.
D. Driver, “Near Net Shape Manufacturing of Aero Engine Components,” Met.als and Materials, 8 (1988), pp. 493–497.
A.S. Brown, “Smoothing Intermetallics,” Aerospace America, 3 (1988), pp. 36–42.
F.H. Froes and R. Carbonara, “Applications of Rapid Solidification,” Journal of Met.als, 2 (1988), pp. 20–27.
J. Wittenauer, C. Bassi and B. Walser, “Hot Deformation Characteristics of Nb-Modified Ti3Al,” to be published in Scripta Metallurgica, 8 (1989).
H.A. Lipsitt et al., “The Deformation and Fracture of Ti3Al at Elevated Temperatures,” Metallurgical Transactions A, 11A (1980), pp. 1369–1375.
S.M. Sastry and H.A. Lipsitt, “Ordering Transformations and Mechanical Properties of Ti3Al and Ti3Al-Nb Alloys,” Metallurgical Transactions A, 8A (1977), ’pp. 1543–1552.
H.A. Lipsitt, “Titanium Aluminides—An Overview,”vol. 39 of MRS Symposium Proceedings Series, ed. C.C. Koch, C.T. Liu and N.S. Stoloff (Pittsburgh, PA: MRS, 1985), pp. 351–364.
P.L. Martin et al., “The Effects of Alloying on the Microstructure and Properties of T3Al and TiAl,” Proceedings of the 4th International Conference on Titanium, Japan, 11 (1980), pp. 1245–1254.
R.G. Rowe, J.A. Sutliff and E.F. Koch, “Comparison of Melt-Spun and Consolidated Ti3Al-Nb Alloys with and without Dispersoids,” Titanium Rapid Solidification Technology, ed. F.H. Froes and D. Eylon, (Warrendale, PA: TMS, 1986), pp. 239–248.
K.R. Teal et al, “Fundamental Studies of the Microstructures of Rapidly Solidified T3Al + Zr and Ti3Al + Nb,” Titanium Rapid Solidification Technology, ed. F.H. Froes and D. Eylon, (Warrendale, PA: TMS, 1986).
J.C. Williams, “Phase Transformation in Ti Alloys—A Review of Recent Developments,” Titanium and Titanium Alloys—Scientific and Technological Aspects, ed. J.C. Williams and E.F. Belov (New York: Plenum Press, 1986), pp. 1477–1498.
F.H. Froes and H.B. Bomberger, “The Beta Titanium Alloys,” Titanium Technology, Present Status and Future Trends (Titanium Development Association, 1985), pp. 103–112.
J.A. Peters and C. Bassi, work in progress, Corporate R&D, Sulzer Bros. Ltd., Winterthur, Switzerland, 1988–89.
J.C. Williams, B.S. Hickman and H.L. Marcus, “The Effect of Omega Phase on The Mechanical Properties of Titanium Alloys,” Metallurgical Transactions A, 2A (1971), pp. 1913–1919.
R. Strychor, J.C. Williams and W.A. Soffa, “Phase Transformation and Modulated Microstructures in Ti-Al-Nb Alloys,” Metallurgical Transactions A, 19A (1988), pp. 225–235.
S.S. Sass and B. Borie, “The Symmetry of the Structure of the ω Phase in Zr and Ti Alloys,” Journal of Applied Crystallography, 5 (1972), pp. 236–238.
G.E. Dieter, Mechanical Metallurgy, 2nd ed. (New York: McGraw-Hill, 1981), pp. 680–682.
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Bassi, C., Peters, J. & Wittenauer, J. Processing titanium aluminide foils. JOM 41, 18–20 (1989). https://doi.org/10.1007/BF03220325
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DOI: https://doi.org/10.1007/BF03220325