Paper Title:
Oxidation Effects during High Temperature Deformation of CP Ti Alloy
  Abstract

This work reports the influence of oxidation on the superplasticity of commercially pure titanium at high temperatures. Uniaxial tensile tests were conducted at temperatures in the range 600-800°C with an initial strain rate of 10s-1 to 10s-3. This study shows that oxidization at the surface of the alloy causes oxide film on the surface of commercially pure titanium alloy, and the thickness of oxide film increase with increasing exposure time and temperature. XRD analysis shows that the oxide film consists of TiO2. Because this oxide film is very brittle, it can induce clefts and degrade the ductility of the titanium at high temperatures. The mechanism of the initial clefts was investigated and a model for the cleft initiation and propagation during high temperature tensile test was proposed.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
3678-3683
DOI
10.4028/www.scientific.net/MSF.539-543.3678
Citation
M. J. Tan, X.J. Zhu, S. Thiruvarudchelvan, K.M. Liew, "Oxidation Effects during High Temperature Deformation of CP Ti Alloy", Materials Science Forum, Vols. 539-543, pp. 3678-3683, 2007
Online since
March 2007
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$32.00
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