Skip to main content Accessibility help

Assessing Failure Mechanisms During Transformation Superplasticity of Ti-6Al-4V

  • C. Schuh (a1) and D. C. Dunand (a1)


During thermal cycling through the α/β phase transformation under the action of a small external biasing stress, Ti alloys exhibit an average deformation stress exponent of unity and achieve superplastic strains. We report tensile experiments on Ti-6Al-4V with an applied stress of 4.5 MPa, aimed at understanding the failure processes during transformation superplasticity. The development of cavities is assessed as a function of superplastic elongation, and macroscopic neck formation is quantified at several levels of elongation by digital imaging techniques. The effects of thermal inhomogeneity on neck initiation and propagation are also elucidated experimentally.



Hide All
1. Nieh, T.G., Wadsworth, J., and Sherby, O. D., Superplasticity in Metals and Ceramics. (Cambridge University Press, Cambridge, 1997).10.1017/CBO9780511525230
2. Schuh, C and Dunand, D. C., Acta Mater. 46, 5663 (1998).10.1016/S1359-6454(98)00252-3
3. Dunand, D. C. and Bedell, C. M., Acta Mater. 44, 1063 (1996).10.1016/1359-6454(95)00224-3
4. Dunand, D. C. and Myojin, S., Mater. Sci. Eng. 230A, 25 (1997).10.1016/S0921-5093(97)00033-6
5. Schuh, C, Zimmer, W., and Dunand, D. C.. in Creep Behavior ofAdvanced Materialsfor the 21st Century edited by Mishra, R. S., Mukherjee, A.K., and Murty, K.L. (Warrendale PA, TMS, 1999) p. 61.
6. Kot, R., Krause, G., and Weiss, V.. in The Science, Technology and Applications of Titanium edited by Jaffe, R.I. and Promisel, N.E. (Oxford, Pergamon, 1970) p. 597 10.1016/B978-0-08-006564-9.50067-1
7. Zwigl, P. and Dunand, D. C., Metall. Mater. Trans. 29A, 2571 (1998).10.1007/s11661-998-0229-4
8. Szkliniarz, W. and Smolka, G., J. Mater. Proc. Tech. 53, 413 (1995).10.1016/0924-0136(95)01998-T
9. Green, D. W. and Maloney, J. O., eds. Perry‘s Chemical Engineer‘s Handbook, (New York, McGraw-Hill, 1984).
10. Greenwood, G. W. and Johnson, R. H., Proc. Roy. Soc. Lond. 283A, 403 (1965).
11. Schuh, C. and Dunand, D. C., Int. J. Plastic. (in print).
12. Sato, K., Nishimura, T., and Kimura, Y., Mater. Sci. Forum. 170–172, 207 (1994).10.4028/
13. Ashby, M. F. and Dyson, B. F.. in Advances in Fracture Research, Fracture 84, edited by Valluri, S. R., et al. (Oxford, Pergamon, 1984) p. 3.
14. Cope, M. T. and Ridley, N., Mat. Sci. Technol. 2, 140 (1986).10.1179/mst.1986.2.2.140
15. Semiatin, S. L., Seetharaman, V., Ghosh, A. K., Shell, E. B., Simon, M. P., and Fagin, P. N., Mater. Sci. Eng. A256, 92 (1998).10.1016/S0921-5093(98)00814-4

Assessing Failure Mechanisms During Transformation Superplasticity of Ti-6Al-4V

  • C. Schuh (a1) and D. C. Dunand (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed