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Laue microdiffraction on polycrystalline samples above 1500 K achieved with the QMAX-µLaue furnace

Article dans une revue avec comité de lecture
Author
PURUSHOTTAM RAJ PUROHIT, Ravi Raj Purohit
1043127 Modélisation et Exploration des Matériaux [MEM]
FOWAN, Daniel
1089373 Institut de Recherche sur les CERamiques [IRCER]
ARNAUD, Stephan
1043183 Institut Néel [NEEL]
BLANC, Nils
1043183 Institut Néel [NEEL]
MICHA, Jean-Sébastien
1043175 SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé [SYMMES]
GUINEBRETIERE, René
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/10985/25142
DOI
10.1107/s1600576724001821
Date
2024-03
Journal
Journal of Applied Crystallography

Abstract

X-ray Laue microdiffraction aims to characterize microstructural and mechanical fields in polycrystalline specimens at the sub-micrometre scale with a strain resolution of ∼10−4. Here, a new and unique Laue microdiffraction setup and alignment procedure is presented, allowing measurements at temperatures as high as 1500 K, with the objective to extend the technique for the study of crystalline phase transitions and associated strain-field evolution that occur at high temperatures. A method is provided to measure the real temperature encountered by the specimen, which can be critical for precise phase-transition studies, as well as a strategy to calibrate the setup geometry to account for the sample and furnace dilation using a standard α-alumina single crystal. A first application to phase transitions in a polycrystalline specimen of pure zirconia is provided as an illustrative example.

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