Journal of Synchrotron Radiation (May 2022)

Generalized pole figures from post-processing whole Debye–Scherrer patterns for microstructural analysis on deformed materials

  • Emanuel Alejandro Benatti,
  • Natalia Soledad De Vincentis,
  • Nowfal Al-Hamdany,
  • Norbert Schell,
  • Heinz-Günter Brokmeier,
  • Martina Avalos,
  • Raúl Eduardo Bolmaro

DOI
https://doi.org/10.1107/S160057752200220X
Journal volume & issue
Vol. 29, no. 3
pp. 732 – 748

Abstract

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Debye–Scherrer patterns, obtained from X-ray diffraction experiments using synchrotron light in transmission geometry, were analysed to construct generalized pole figures, and further used as input for an orientation distribution function inversion algorithm. By using Langford's method for separating strain and size contributions to peak broadening, it was possible, for the first time, to obtain full domain size and dislocation density generalized distribution functions (GDFs). This method was applied to cold-rolled and annealed interstitial-free steel. The predictions made using GDFs were corroborated by electron backscatter diffraction measurements and were also consistent with what was previously known for this kind of material under these conditions.

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