# X-ray 4D multimodal testing & simulations to study crystal plasticity

Clement Ribart, Aldo Marano, Andrew King, Wolfgang Ludwig, Henry Proudhon

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Clement Ribart, Aldo Marano, Andrew King, Wolfgang Ludwig, Henry Proudhon. X-ray 4D multimodal testing & simulations to study crystal plasticity. 18th European Mechanics of Materials Conference, Apr 2022, Oxford, United Kingdom. hal-04345608

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Submitted on 14 Dec 2023

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# X-ray 4D multimodal testing & simulations to study crystal plasticity

Clément Ribart<fnref n="1" />, Aldo Marano <fnref n="1" />, Andrew King<fnref n="2" />, Wolfgang Ludwig<fnref n="3" />,<fnref n="4" />, Henry Proudhon<fnref n="1" />

(clement.ribart@mines-paristech.fr, aldo.marano@mines-paristech.fr, king@synchrotron-soleil.fr, wolfgang.ludwig@esrf.fr, henry.proudhon@mines-paristech.fr)

This talk aims to showcase a new type of methodology, applied on commercially pure Titanium samples, combining X-rays with laboratory based techniques (SEM, in situ EBSD) and simulations with the objective to probe polycrystal plasticity at both mesoscopic and microstructural scales [1].

In particular, Diffraction Contrast Tomography (DCT - developed at ESRF) allows reconstruction of 3D digital grain maps containing thousands of grains on which simulations can be run directly [2]. A crystal plasticity finite strain model is implemented within a massively parallel FFT solver framework for volume computations [3]. In the meantime FEM simulations are performed on surface EBSD maps.

Convergence of innovative experimental and numerical techniques leads to multimodal and rich but unconsolidated massive datasets. A data plateform was thus developed to structure the data and enable concurrent analysis of the various modalities. Mechanisms of interest in the present study include slip activity, stress field and lattice rotation evolution at grain level.

## References

[1] Michael D. Sangid. Coupling in situ experiments and modeling – Opportunities for data fusion, machine learning, and discovery of emergent behavior. *Current Opinion in Solid State and Materials Science*, 24(1):100797, February 2020.

[2] Henry Proudhon, Jia Li, Peter Reischig, Nicolas Guéninchault, Samuel Forest, and Wolfgang Ludwig. Coupling Diffraction Contrast Tomography with the Finite Element Method. *Advanced Engineering Materials*, 18(6):903–912, 2016.

[3] AMITEX. http://www.maisondelasimulation.fr/projects/amitex/general/_build/html/index.html.

<footnote n="1">¹ MINES ParisTech, PSL University, MAT - Centre des Matériaux, CNRS UMR 7633, BP 87 91003 Evry, France</footnote>

<footnote n="2">² SOLEIL Synchrotron, L'Orme des Merisiers, F-91190 Saint-Aubin, France</footnote>

<footnote n="3">³ Laboratoire Materiaux, Ingenierie et Science, INSA Lyon, Université de Lyon, 25 Avenue Jean Capelle, 69621 Villeurbanne, Cedex, France</footnote>

<footnote n="4">⁴ European Synchrotron Radiation Facility, 71, avenue des Martyrs, CS 40220, 38043 Grenoble CEDEX 9, France</footnote>