| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Majkut, Marta
European Synchrotron Radiation Facility
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Pore evolution mechanisms during directed energy deposition additive manufacturingcitations
- 2024Pore evolution mechanisms during directed energy deposition additive manufacturing
- 2024AM-SegNet for additive manufacturing in situ X-ray image segmentation and feature quantification
- 2024Microstructure evolutions induced by electron beam melting of a sintered Cu-25Cr composite
- 2024Correlative spatter and vapour depression dynamics during laser powder bed fusion of an Al-Fe-Zr alloycitations
- 2023Environment effect on internal fatigue crack propagation studied with in-situ X-ray microtomographycitations
- 2022Evaluation of digital volume correlation (DVC) applicability in silicon dioxide (SiO2) particle-doped carbon fibre reinforced polymers using in situ synchrotron radiation computed tomography (SRCT)
- 2020In situ analysis of cast irons mechanical behaviour using synchrotron x-ray tomography and 3DXRDcitations
- 2020On the nucleation of deformation twins at the early stages of plasticitycitations
- 2018Dynamics and grain orientation dependence of the electric field induced phase transformation in Sm modified BiFeO 3 ceramicscitations
- 2017Electromechanical Response of Polycrystalline Barium Titanate Resolved at the Grain Scalecitations
- 2016Mapping of strain mechanisms in barium titanate by three-dimensional X-ray diffraction
- 2015Study of 3-D stress development in parent and twin pairs of a hexagonal close-packed polycrystal: Part I - In-situ three-dimensional synchrotron X-ray diffraction measurementcitations
- 2015On the deformation twinning of Mg AZ31Bcitations
- 2015Study of 3-D stress development in parent and twin pairs of a hexagonal close-packed polycrystal: Part II - Crystal plasticity finite element modelingcitations
- 2015On the deformation twinning of Mg AZ31B:A three-dimensional synchrotron X-ray diffraction experiment and crystal plasticity finite element modelcitations
- 2015On the deformation twinning of Mg AZ31B: A three-dimensional synchrotron X-ray diffraction experiment and crystal plasticity finite element modelcitations
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article
On the deformation twinning of Mg AZ31B
Abstract
Crystals with a hexagonal close-packed (HCP) structure are inherently anisotropic, and have a limited number of independent slip systems, which leads to strong deformation textures and reduced formability in polycrystalline products. Tension along the c-axis of the crystal ideally activates extension twinning as a deformation mode due to the lack of easy-slip systems. In this work, experiments were devised to study extension twinning in a polycrystalline Mg alloy AZ31B with a strong basal rolling texture by tensile deformation parallel to the plate normal. Three-dimensional synchrotron X-ray diffraction (3DXRD) was used to map the center-of-mass positions, volumes, orientations, elastic strains, and stress tensors of over 1400 grains in-situ up to a true strain of 1.4%. More than 700 tensile twins were observed to form in the mapped volume under deformation. The measured center-of-mass positions and grain volumes are used to construct various 3D microstructures and model them with a Crystal Plasticity Finite Element (CPFE) code. It is observed that the average grain-resolved stress did not always select the highest ranked Schmid factor twin variant. In fact, the contribution of lower ranked variants was non-negligible. The CPFE simulation indicates that there is a small variation in the stress within each grain in the elastic regime, which increases drastically upon the onset of plasticity. One of the significant outcomes of this work is the new statistical information on the interaction between twin and parent grain. It is shown that, on average, there is a small difference between the stress normal to the twin habit plane in the parent and twin, but that this is not the case for the shear acting on the habit plane.