Grain to grain slip activity in plastically deformed Zr determined by X-ray micro-diffraction line profile analysis

T. Ungár, O. Castelnau, G. Ribárik, M. Drakopoulos, J. L. Béchade, T. Chauveau, A. Snigirev, I. Snigireva, C. Schroer, B. Bacroix

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Abstract

The slip system activity in individual grains of a plastically deformed Zircaloy-2 specimen was determined by micro-diffraction X-ray line profile analysis measurements at the ID22 beam line of the European Synchrotron Radiation Facility synchrotron in Grenoble, France. The grain to grain orientation map was determined by electron back scattering diffraction (EBSD) and this was used for orienting individual grains to produce specific Bragg reflections. Anisotropic X-ray line broadening was evaluated in terms of dislocation densities, the average sub-grain size and slip activity. Slip line traces were evaluated in the EBSD micrographs in correlation with the grain orientation. The X-ray and EBSD correlation indicated that 〈a〉-type dislocations with considerable prismatic slip activity dominated plastic deformation in this alloy and that, with increasing dislocation density, the fractions of 〈a〉- and 〈c〉-type dislocations increased.

Original languageEnglish
Pages (from-to)1117-1127
Number of pages11
JournalActa Materialia
Volume55
Issue number3
DOIs
Publication statusPublished - Feb 1 2007

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Keywords

  • Dislocation density
  • Hexagonal metals
  • Micro-diffraction
  • Slip systems
  • X-ray line profile analysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Ungár, T., Castelnau, O., Ribárik, G., Drakopoulos, M., Béchade, J. L., Chauveau, T., Snigirev, A., Snigireva, I., Schroer, C., & Bacroix, B. (2007). Grain to grain slip activity in plastically deformed Zr determined by X-ray micro-diffraction line profile analysis. Acta Materialia, 55(3), 1117-1127. https://doi.org/10.1016/j.actamat.2006.09.031