| 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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Orozco-Caballero, Alberto
Universidad Politécnica de Madrid
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2025Twin nucleation at grain boundaries in Mg analyzed through in situ electron backscatter diffraction and high-resolution digital image correlationcitations
- 2023Accurate determination of active slip systems for improved geometrical criteria of basal-to-basal slip transfer at grain boundaries in pure Mgcitations
- 2020High Strain Rate Superplasticity of WE54 Mg Alloy after Severe Friction Stir Processingcitations
- 2018Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metalscitations
- 2018Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metalscitations
- 2018Enabling high resolution strain mapping in zirconium alloyscitations
- 2018Enabling high resolution strain mapping in zirconium alloyscitations
- 2018On the ductility of alpha titanium: The effect of temperature and deformation modecitations
- 2018On the ductility of alpha titanium: The effect of temperature and deformation modecitations
- 2017Grain size versus microstructural stability in the high strain rate superplastic response of a severely friction stir processed Al-Zn-Mg-Cu alloycitations
- 2017Influence of Grain Coarsening on the Creep Parameters During the Superplastic Deformation of a Severely Friction Stir Processed Al-Zn-Mg-Cu Alloycitations
- 2017How magnesium accommodates local deformation incompatibility: a high-resolution digital image correlation studycitations
- 2017Evaluation of the mechanical anisotropy and the deformation mechanism in a multi-pass friction stir processed Al-Zn-Mg-Cu alloycitations
- 2016Strategy for severe friction stir processing to obtain acute grain refinement of an Al-Zn-Mg-Cu alloy in three initial precipitation statescitations
Places of action
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article
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals
Abstract
By recourse of computational mechanics, back-stresses are unveiled as a major source for the increase in work hardening during forming of hexagonal close-packaged (hcp) metals. Polycrystalline visco-plastic self-consistent (VPSC) and crystal plasticity finite element modelling (CPFEM) simulations of tensile uniaxial experiments were used along with experimental texture information. Simulations took into account the analogous variation in the critical resolved shear stress (CRSS) values of each slip family that could result from an increase in the test temperature. As the CRSS ratio between secondary and primary slip families increased, two different contributions to the variation of the work hardening rate were observed depending on the simulation framework: (i) a decrease in the work hardening rate in VPSC simulations attributed to texture evolution or geometrical hardening and (ii) an increase in the work hardening rate in CPFEM simulations due to back-stresses. While geometrical hardening is present in both simulation frameworks, only CPFEM is able to capture the influence of back-stresses on the increase of the work hardening rate with temperature. The results provided here contribute to a better understanding of the deformation mechanisms present in warm forming of hcp metals, showing also that CPFEM is a better simulation framework to study warm forming of hcp metals.