Abstract
Single crystals of Ti, oriented favorably for prismatic slip and containing two levels of interstitial impurities, have been deformed in tension at temperatures between 78 to 1120 K. The stress-strain curves exhibit three stages of hardening similar to those of Zr and of fcc crystals. The work hardening rate in Stage II, θII/G is lower in Ti than in Zr. From the strain rate dependence of the stress at the onset of Stage III, the stacking fault energy on the prism planes of Ti has been estimated as 0.145 Joules/m2. The relative values of stacking fault energy for Ti and Zr are consistent with a dissociation model which is based on the hcp ai bcc transformation. The thermally activated prismatic slip below 250 K is controlled by the interaction of dislocations with interstitial solute atoms. Above 250 K the dislocation mechanism for plastic flow is not clearly understood.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
F. D. Rosi, C. A. Dube, and B. H. Alexander:J. Metals, 1953, vol. 5, p. 257.
D. C. Jillson:J. Metals, 1953, vol. 5, p. 1191.
A. T. Churchman:Proc. Roy. Soc. (London), Ser. A., 1954, vol. 226, p. 216.
N. E. Paton and W. A. Backofen:Met. Trans., 1970, vol. 1, p. 2839.
T. R. Cass:The Science, Technology and Applications of Titanium, p. 459, Oxford, Pergamon Press, 1970.
E. D. Levine:Trans. TMS-AIME, 1966, vol. 236, p. 1558.
T. Tanaka and H. Conrad:Acta Met., 1972, vol. 20, p. 1019.
A. Akhtar and E. Teghtsoonian:Acta Met., 1971, vol. 19, p. 655.
G. Das and T. E. Mitchell:Met. Trans., 1973, vol. 4, p. 1405.
E. S. Fisher and C. J. Renken:Phys. Rev., 1964, vol. 135, p. A482.
D. B. Snow and J. F. Breedis:Proe. of the Second lnt. Conf. on the Strength of Metals and Alloys, vol. II, p. 418, Amer. Soc. for Metals, 1970.
T. R. Cass, R. W. Quinn, and W. R. Spencer:J. Crystal Growth, 1968, vol. 2, p. 413.
A. Akhtar and E. Teghtsoonian:J. Crystal Growth, 1975, vol. 28, p. 227.
H. Burrier, M. Amateau, and E. Steigerwald:The Relationship between Plastic Deformation and Fracture in Alpha Titanium, Report A.F.M.L.-T.R.-65-239, 1965.
H. Conrad and H. Wiedersich:Acta Met., 1960, vol. 8, p. 128.
J. V. Sharp:Proc. of the Sixth Int. Conf. on Electron Microscopy (Tokyo: Maruzen Co.) 1966, vol. 1, p. 305.
P. Haasen:Phil. Mag., 1958, vol. 3, p. 384.
A. Seeger, R. Berner, and H. Wolf:Z. Phys., 1959, vol. 155, p. 247.
M. Ahlers:Met. Trans., 1970, vol. 1, p. 2415.
H. S. Rosenbaum:Deformation Twinning, p. 43, New York, Gordon and Breach, 1964.
W. R. Tyson:Acta Met., 1967, vol. 15, p. 574.
P. Regnier and J. M. Dupouy:Phys. Status Solidi, 1968, vol. 28, p. K55.
T. Sakai and M. E. Fine: Northwestern University, U.S.A., Technical Report AFM-TR-73-131, 1973.Scr. Met., 1974, vol. 8, p. 541.
R. A. Foxall, M. S. Duesbery, and P. B. Hirsch:Can. J. Phys., 1967, vol. 45, p. 607.
P. Soo and G. T. Higgins:Acta Met., 1968, vol. 16, p. 177.
P. P. Tung and A. W. Sommer:Met. Trans., 1970, vol. 1, p. 947.
R. N. Orava, F. G. Stone, and H. Conrad:Trans. ASM, 1966, vol. 59, p. 177.
S. N. Monteiro, A. T. Santhanam, and R. E. Reed-Hill:The Science, Technology and Applications of Titanium, p. 503, Oxford, Pergamon Press, 1970.
M. Someno and H. Saito:The Science, Technology and Applications of Titanium, p. 393, Oxford, Pergamon Press, 1970.
P. Soo and G. T. Higgins:Acta Met., 1968, vol. 16, p. 187.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Akhtar, A., Teghtsoonian, E. Prismatic slip in α-titanium single crystals. Metall Trans A 6, 2201 (1975). https://doi.org/10.1007/BF02818644
Received:
DOI: https://doi.org/10.1007/BF02818644