Metallurgical and Materials Transactions A

, Volume 29, Issue 2, pp 513–518

Cyclic deformation behavior of high-purity titanium single crystals: Part II. Microstructure and mechanism

Authors

  • X. Tan
    • the Hemispheric Center for Environmental TechnologyFlorida International University
  • H. Guo
    • the Department of Metallurgy and Materials EngineeringEcole Polytechnique
  • H. Gu
    • the Research Institute for Strength of MetalsXi’an Jiaotong University
  • C. Laird
    • the Department of Materials Science and EngineeringUniversity of Pennsylvania
  • N. D. H. Munroe
    • the Hemispheric Center for Environmental TechnologyFlorida International University
Article

DOI: 10.1007/s11661-998-0132-z

Cite this article as:
Tan, X., Guo, H., Gu, H. et al. Metall and Mat Trans A (1998) 29: 513. doi:10.1007/s11661-998-0132-z

Abstract

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.

Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 1998