The application of in-situ 3D X-ray diffraction in annealing experiments: First interpretation of substructure development in deformed NaCl

Verity Borthwick, Søren Schmidt, Sandra Piazolo, Carsten Gundlach, Albert Griera, Paul D. Bons, Mark W. Jessell

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

In-situ 3D X-ray diffraction (3DXRD) annealing experiments were conducted at the ID-11 beamline at the European Synchrotron Radiation Facility in Grenoble. This allowed us to nondestructively document and subsequently analyse the development of substructures during heating, without the influence of surface effects. A sample of deformed single crystal halite was heated to between 260-400 °. Before and after heating a volume of 500 by 500 by 300 μm was mapped using a planar beam, which was translated over the sample volume at intervals of 5-10 μm in the vertical dimension. In the following we present partially reconstructed orientation maps over one layer before and after heating for 240min at 260 °. Additional small syn-heating "maps" over a constrained sample rotation of 12-30°. The purpose of this was to illuminate a few reflections from 1 or 2 subgrains and follow their evolution during heating. Preliminary results show that significant changes occurred within the sample volume, for which, surface effects can be excluded. Results show a number of processes, including: i) change in subgrain boundary misorientation angle and ii) subgrain subdivision into areas of similar lattice orientation with new subgrain boundary formation. These results demonstrate that 3DXRD coupled with in-situ heating is a successful non-destructive technique for examining real-time postdeformational annealing in strongly deformed crystalline materials with complicated microstructures. © (2012) Trans Tech Publications, Switzerland.
Original languageEnglish
JournalMaterials Science Forum
Volume715-716
Pages (from-to)461-466
ISSN0255-5476
DOIs
Publication statusPublished - 2012
Event4th International Conference on Recrystallization and Grain Growth - Sheffield, United Kingdom
Duration: 4 Jul 20109 Jul 2010

Conference

Conference4th International Conference on Recrystallization and Grain Growth
Country/TerritoryUnited Kingdom
CitySheffield
Period04/07/201009/07/2010

Keywords

  • Annealing
  • Crystalline materials
  • Grain growth
  • Recrystallization (metallurgy)
  • Sodium chloride
  • Three dimensional
  • Titanium sheet
  • X ray diffraction
  • Heating

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