Cyclic deformation behavior of high-purity titanium single crystals: Part II. Microstructure and mechanism
- 229 Downloads
Strain-controlled cyclic tests have been conducted on high-purity titanium single crystals with different orientations. The fatigue mechanisms of the titanium crystals were studied by means of a scanning electron microscope (SEM) and a transmission electron microscope (TEM). It was found that single slip lines, wavy slip lines, double slip lines, twins, and associated slip lines occurred in differently oriented single crystals. A new type of fractographic morphology, parallel traces, was observed. Dislocation patterns and cyclic twins, as well as the mechanical response, were analyzed. The dependence of the deformation mechanisms on the orientations of the single crystals is discussed.
Unable to display preview. Download preview PDF.
- 1.M.H. Yoo and J.K. Lee: Phil. Mag. A, 1991, vol. 63, p. 987.Google Scholar
- 2.M.H. Yoo: Metall. Trans. A, 1981, vol. 12A, pp. 409–18.Google Scholar
- 3.A. Akhtar and E. Teghtsoonian: Metall. Trans. A, 1975, vol. 6A, pp. 2201–8.Google Scholar
- 4.A. De Crecy, A. Bourret, S. Naka, and A. Lasalmonie: Phil. Mag. A, 1983, vol. 47, p. 245.Google Scholar
- 5.J.I. Dickson, J. Ducher, and A. Plumtree: Metall. Trans. A, 1976, vol. 7A, pp. 1559–65.Google Scholar
- 6.M. Sugano and C.M. Gilmore: Metall. Trans. A, 1980, vol. 11A, pp. 559–63.Google Scholar
- 8.C.M. Ward-Close and C.J. Beeverse: Metall. Trans. A, 1980, vol. 11A, pp. 1007–17.Google Scholar
- 9.L. Handfield and J.I. Dickson: in Defects, Fracture and Fatigue, G.C. Sih and J.W. Provan, eds., Martinus Nijhoff Publishers, Hingham, MA, 1983, p. 37.Google Scholar
- 10.X. Tan, H. Gu, C. Laird, and N.D.H. Munroe: Metall. Mater. Trans. A, 1998, vol. 29A, pp. 507–12.Google Scholar