Incipient Bulk Polycrystal Plasticity Observed by Synchrotron In-Situ Topotomography
1
MINES ParisTech, PSL Research University, MAT—Centre des Matériaux, CNRS UMR 7633, BP 87 91003 Evry, France
2
ESRF, The European Synchrotron, CS 40220, 38043 Grenoble, France
3
INSA Lyon, MATEIS, University of Lyon, UMR 5510 CNRS, F-69621 Lyon, France
*
Author to whom correspondence should be addressed.
†
Current address: Xnovo Technology ApS, Theilgaards Alle 9, 1th, 4600 Køge, Denmark.
Materials 2018, 11(10), 2018; https://doi.org/10.3390/ma11102018
Received: 10 September 2018
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Revised: 9 October 2018
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Accepted: 10 October 2018
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Published: 18 October 2018
(This article belongs to the Special Issue In-Situ X-Ray Tomographic Study of Materials)
In this paper, we present a comprehensive 4D study of the early stage of plastic deformation in a polycrystalline binary AlLi alloy. The entire microstructure is mapped with X-ray diffraction contrast tomography, and a set of bulk grains is further studied via X-ray topotomography during mechanical loading. The observed contrast is analyzed with respect to the slip system activation, and the evolution of the orientation spread is measured as a function of applied strain. The experimental observations are augmented by the mechanical response predicted by crystal plasticity finite element simulations to analyze the onset of plasticity in detail. Simulation results show a general agreement of the individual slip system activation during loading and that comparison with experiments at the length scale of the grains may be used to fine tune the constitutive model parameters.
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Keywords:
polycrystal plasticity; X-ray diffraction imaging; topotomography; in situ experiment; finite element simulation; lattice curvature; rocking curve
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
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ZIP-Document (ZIP, 32381 KiB)
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Externally hosted supplementary file 1
Doi: 10.5281/zenodo.1412401
Description: Diffraction Contrast Tomography reconstruction of the Aluminium-Lithium tension specimen
MDPI and ACS Style
Proudhon, H.; Guéninchault, N.; Forest, S.; Ludwig, W. Incipient Bulk Polycrystal Plasticity Observed by Synchrotron In-Situ Topotomography. Materials 2018, 11, 2018. https://doi.org/10.3390/ma11102018
AMA Style
Proudhon H, Guéninchault N, Forest S, Ludwig W. Incipient Bulk Polycrystal Plasticity Observed by Synchrotron In-Situ Topotomography. Materials. 2018; 11(10):2018. https://doi.org/10.3390/ma11102018
Chicago/Turabian StyleProudhon, Henry, Nicolas Guéninchault, Samuel Forest, and Wolfgang Ludwig. 2018. "Incipient Bulk Polycrystal Plasticity Observed by Synchrotron In-Situ Topotomography" Materials 11, no. 10: 2018. https://doi.org/10.3390/ma11102018
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