A technique for recording polycrystalline structure and orientation during in situ deformation cycles of rock analogues using an automated fabric analyser

Mark Peternell, D. S. Russell-Head, C. J L Wilson

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34 Citations (Scopus)

Abstract

Two in situ plane-strain deformation experiments on norcamphor and natural ice using synchronous recording of crystal c-axis orientations have been performed with an automated fabric analyser and a newly developed sample press and deformation stage. Without interrupting the deformation experiment, c-axis orientations are determined for each pixel in a 5 × 5 mm sample area at a spatial resolution of 5 μm/pixel. In the case of norcamphor, changes in microstructures and associated crystallographic information, at a strain rate of ∼2 × 10-5 s-1, were recorded for the first time during a complete in situ deformation-cycle experiment that consisted of an annealing, deformation and post-deformation annealing path. In the case of natural ice, slower external strain rates (∼1 × 10-6 s-1) enabled the investigation of small changes in the polycrystal aggregate's crystallography and microstructure for small amounts of strain. The technical setup and first results from the experiments are presented.

Original languageEnglish
Pages (from-to)181-188
Number of pages8
JournalJournal of Microscopy
Volume242
Issue number2
DOIs
Publication statusPublished - May 2011
Externally publishedYes

Keywords

  • c-axis orientation
  • Deformation stage
  • Fabric analyser
  • Ice
  • in situ experiment
  • Norcamphor
  • Rock analogue

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