People | Locations | Statistics |
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Ferrari, A. |
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Schimpf, Christian |
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Dunser, M. |
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Thomas, Eric |
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Gecse, Zoltan |
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Tsrunchev, Peter |
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Della Ricca, Giuseppe |
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Cios, Grzegorz |
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Hohlmann, Marcus |
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Dudarev, A. |
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Mascagna, V. |
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Santimaria, Marco |
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Poudyal, Nabin |
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Piozzi, Antonella |
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Mørtsell, Eva Anne |
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Jin, S. |
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Noel, Cédric |
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Fino, Paolo |
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Mailley, Pascal |
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Meyer, Ernst |
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Zhang, Qi |
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Pfattner, Raphael | Brussels |
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Kooi, Bart J. |
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Babuji, Adara |
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Pauporte, Thierry |
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Guitton, Antoine
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Improving embrittlement in the Ti-Al-C MAX phase system: a composite approach for surface severe plastic deformationcitations
- 2023The effect of prior ultrasonic shot peening treatment on the low-temperature plasma nitriding of a metastable β-Ti alloy
- 2022Feature engineering-based approach for capturing fundamental deformation mechanisms of plasticity in β-Ti21S
- 2022Feature extraction applied to slip trace analysis in β-Ti21S
- 2022Microstructural and mechanical characterizations of Mg-based nanocomposites with MAX phases or MXenes after severe plastic deformation treatments
- 2022Experimental, mesoscopic and statistical approaches of plasticity in polycrystals ; Experimental, mesoscopic and statistical approaches of plasticity in polycrystals: Approches expérimentales, mésoscopiques et statistiques de la plasticité dans les polycristaux
- 2022Are MAX phases good candidates for doping Mg hydrogen storage?
- 2021Frank partial dislocation in Ti2AlC-MAX phase induced by matrix-Cu diffusion
- 2020Experimental study of elementary deformation mechanisms around a low-angle grain boundary in a single crystalline CrCoNi medium-entropy alloy.
- 2018Dislocation-scale characterization of the evolution of deformation microstructures on bulk materials. Case of TiAl alloys
- 2018Characterization of crystalline defects studied by STEM-in-SEM
- 2018A dislocation-scale characterization of the evolution of deformation microstructures around nanoindentation imprints in a TiAl
- 2018A dislocation-scale characterization of the evolution of deformation microstructures on a bulk TiAl alloy
- 2016Grain size determination in nanocrystalline materials using the TKD technique
Places of action
conferencepaper
Feature engineering-based approach for capturing fundamental deformation mechanisms of plasticity in β-Ti21S
Abstract
International audience ; Surface based slip trace analysis provides statistical insights into the synergistic coupling between different mechanisms occurring at the meso and microscopic length scales during the deformation of polycrystalline metals. Advancements in microscopy related techniques such as accurate electron channelling contrast imaging (A-ECCI) [1]–[3] and high-resolution electron back scattered diffraction (HR-EBSD) [4] data has provided access to multi-length scale datasets that can be treated via feature engineering algorithms. In particular, the enhanced contrast and resolution offered by these methodologies enable the application of automated feature extraction algorithms to extract useful information about the slip system activity distribution [5] and distributions for angular variables engaged in slip-transfer at grain boundaries [6]. The present talk focusses on how this information can be combined with principal component analysis to differentiate slip-transfer regimes and to tune yield parameters used in full-field crystal plasticity models. Such an approach is statistically relevant and versatile enough to account for strain fields measured by digital image correlation and surface topography obtained from optical profilometry or atomic force microscopy. References[1]H. Kriaa, A. GuittonN, and N. Maloufi, “Modeling Dislocation Contrasts Obtained by Accurate-Electron Channeling Contrast Imaging for Characterizing Deformation Mechanisms in Bulk Materials,” Materials (Basel)., vol. 12, no. 10, p. 1587, May 2019, doi:10.3390/ma12101587.[2]J. Guyon, H. Mansour, N. Gey, M. A. Crimp, S. Chalal, and N. Maloufi, “Sub-micron resolution selected area electron channeling patterns,” Ultramicroscopy, vol. 149, pp. 34–44, Feb. 2015, doi:10.1016/j.ultramic.2014.11.004.[3]M. Ben Haj Slama, N. Maloufi, J. Guyon, S. Bahi, L. Weiss, and A. Guitton, “In Situ Macroscopic Tensile Testing in SEM and Electron Channeling Contrast Imaging: Pencil Glide Evidenced in a Bulk β-Ti21S Polycrystal,” Materials (Basel)., ...