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Phase transition and twinning in polycrystals probed by in situ high temperature 3D reciprocal space mapping

Article dans une revue avec comité de lecture
Author
PURUSHOTTAM RAJ PUROHIT, Ravi Raj Purohit
1042703 Université Grenoble Alpes [UGA]
FOWAN, Daniel Pepin
522021 Institut de Recherche sur les CERamiques [IRCER]
1089373 Institut de Recherche sur les CERamiques [IRCER]
THUNE, Elsa
522021 Institut de Recherche sur les CERamiques [IRCER]
1089373 Institut de Recherche sur les CERamiques [IRCER]
ARNAUD, Stephan
1043183 Institut Néel [NEEL]
1043188 CRG & Grands instruments [NEEL - CRG]
CHAHINE, Gilbert
1042703 Université Grenoble Alpes [UGA]
1043114 Science et Ingénierie des Matériaux et Procédés [SIMaP]
BLANC, Nils
1043183 Institut Néel [NEEL]
GUINEBRETIÈRE, René
522021 Institut de Recherche sur les CERamiques [IRCER]
1089373 Institut de Recherche sur les CERamiques [IRCER]
ccCASTELNAU, Olivier
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/23053
DOI
10.1063/5.0109058
Date
2022-10
Journal
Applied Physical Letters

Abstract

Polycrystalline materials exhibit physical properties that are driven by both the interatomic crystallographic structure as well as the nature and density of structural defects. Crystallographic evolutions driven by phase transitions and associated twinning process can be observed in situ in three-dimensional (3D) using monochromatic synchrotron radiation at very high temperatures (over 1000 C). This paper focuses on continuous measurements of the 3D-reciprocal space maps by high-resolution x-ray diffraction as a function of temperature along a phase transition process occurring between 1200 C and room temperature. These high precision measurements allow observing the reciprocal space node splitting and the evolution of the diffuse scattering signal around that node as a function of temperature. The capability of this experimental method is illustrated by direct in situ high temperature measurements of the 3D splitting of a reciprocal space node due to phase transition recorded on dense pure zirconia polycrystals.

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