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Article Dans Une Revue Polymer Année : 2022

Enhanced ductility in high performance polyamides due to strain-induced phase transitions

Résumé

Synchrotron x-ray microtomography is a characterization technique increasingly used to obtain 3D images of the interior of optically opaque materials with a spatial resolution in the micrometer range. As a nondestructive technique, it enables the monitoring of microstructural evolution during in situ experiments. In this article, examples from three different fields of metals research illustrate the contribution of x-ray tomography data to modeling: deformation of cellular materials, metal solidification, and fatigue crack growth in Al alloys. Conventionally, tomography probes the 3D distribution of the x-ray attenuation coefficient within a sample. However, this technique is also being extended to determine the local crystallographic orientation in the bulk of materials (diffraction contrast tomography), a key issue for the modeling of microstructure in metals.

Dates et versions

hal-03956801 , version 1 (25-01-2023)

Identifiants

Citer

Nicolas Candau, Jean-Marc Chenal, Olivier Lame, Pascal Schouwink, Véronique Michaud, et al.. Enhanced ductility in high performance polyamides due to strain-induced phase transitions. Polymer, 2022, 238, pp.124424. ⟨10.1016/j.polymer.2021.124424⟩. ⟨hal-03956801⟩
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