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

BENATTI, EMANUEL ALEJANDRO; DE VINCENTIS, NATALIA SOLEDAD; AL-HAMDANY, NOWFAL; SCHELL, NORBERT; BROKMEIER, HEINZ-GÜNTER; AVALOS, MARTINA; BOLMARO, RAÚL EDUARDO

JOURNAL OF SYNCHROTRON RADIATION

WILEY-BLACKWELL PUBLISHING, INC

Año: 2022 vol. 29 p. 732 - 748

0909-0495

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.