On the use of SEM correlative tools for in situ mechanical tests
| Autor: | Felix Latourte, Qiwei Shi, Nicolas Brynaert, Dominique Loisnard, Stéphane Roux, François Hild |
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| Přispěvatelé: | Laboratoire de Mécanique et Technologie (LMT), École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS), Matériaux et Mécanique des Composants (EDF R&D MMC), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF) |
| Rok vydání: | 2018 |
| Předmět: |
Correlative
Digital image correlation Materials science EBSD Crystal plasticity 02 engineering and technology Kinematics Displacement (vector) BSE [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] 0203 mechanical engineering Computer vision Instrumentation in situ tension Orientation (computer vision) business.industry 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Crystallography 020303 mechanical engineering & transports SEM Grain boundary Artificial intelligence 0210 nano-technology business Rotation (mathematics) Electron backscatter diffraction |
| Zdroj: | Ultramicroscopy Ultramicroscopy, Elsevier, 2018, 184, Part A, pp.71-87. ⟨10.1016/j.ultramic.2017.08.005⟩ |
| ISSN: | 0304-3991 |
| Popis: | International audience; In situ SEM mechanical tests are key to study crystal plasticity. In particular, imaging and diffraction (EBSD) allow microstructure and surface kinematics to be monitored all along the test. However, to get a full benefit from different modalities, it is necessary to register all images and crystallographic orientation maps from EBSD into the same frame. Different correlative approaches tracking either Pt surface markings, crystal orientations or grain boundaries, allow such registrations to be performed and displacement as well as rotation fields to be measured, a primary information for crystal plasticity identification. However, the different contrasts that are captured in different modalities and unavoidable stage motions also give rise to artifacts that are to be corrected to register the different information onto the same material points. The same image correlation tools reveal very powerful to correct such artifacts. Illustrated by an in situ uniaxial tensile test performed on a bainitic-ferritic steel sample, recent advances in image correlation techniques are reviewed and shown to provide a comprehensive picture of local strain and rotation maps. |
| Databáze: | OpenAIRE |
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