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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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Korte-Kerzel, Sandra
RWTH Aachen University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2025Grain boundary segregation spectrum in basal-textured Mg alloys: From solute decoration to structural transitioncitations
- 2024Defects in magnesium and its alloys by atomistic simulation: Assessment of semi-empirical potentialscitations
- 2024Understanding the damage initiation and growth mechanisms of two DP800 dual phase grades
- 2024Predicting Grain Boundary Segregation in Magnesium Alloys: An Atomistically Informed Machine Learning Approach
- 2023Laves phases in Mg-Al-Ca alloys and their effect on mechanical properties
- 2023Tailoring the Plasticity of Topologically Close‐Packed Phases via the Crystals’ Fundamental Building Blockscitations
- 2023Revealing the nano-scale mechanisms of the limited non-basal plasticity in magnesium
- 2023Thermally activated nature of synchro-Shockley dislocations in Laves phasescitations
- 2023Unveiling the mechanisms of motion of synchro-Shockley dislocations in Laves phasescitations
- 2022Synergistic effects of solutes on active deformation modes, grain boundary segregation and texture evolution in Mg-Gd-Zn alloyscitations
- 2021Exploring the transfer of plasticity across Laves phase interfaces in a dual phase magnesium alloycitations
- 2020Ni–Cr–Al Alloy for neutron scattering at high pressurescitations
- 2020Ni–Cr–Al Alloy for neutron scattering at high pressurescitations
- 2019Ti and its alloys as examples of cryogenic focused ion beam milling of environmentally-sensitive materialscitations
- 2019Modelling of differential scanning calorimetry heating curves for precipitation and dissolution in an Al-Mg-Sicitations
- 2019Global and High-Resolution Damage Quantification in Dual-Phase Steel Bending Samples with Varying Stress Statescitations
- 2019Large-area, high-resolution characterisation and classification of damage mechanisms in dual-phase steel using deep learningcitations
- 2019Atomistic Simulations of Basal Dislocations Interacting with Mg$_{17}$Al$_{12}$ Precipitates in Mgcitations
- 2018Dislocations and Plastic Deformation in MgO Crystals: A Reviewcitations
- 2014Intrinsic and extrinsic size effects in the deformation of amorphous CuZr/nanocrystalline Cu nanolaminatescitations
Places of action
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article
Atomistic Simulations of Basal Dislocations Interacting with Mg$_{17}$Al$_{12}$ Precipitates in Mg
Abstract
13 pages with 9 figures and 2 tables. Supplementary material ; International audience ; The mechanical properties of Mg-Al alloys are greatly influenced by the complex intermetallic phase Mg$_{17}$Al$_{12}$, which is the most dominant precipitate found in this alloy system. The interaction of basal edge and 30$^{o}$ dislocations with Mg$_{17}$Al$_{12}$ precipitates is studied by molecular dynamics and statics simulations, varying the inter-precipitate spacing ($L$), and size ($D$), shape and orientation of the precipitates. The critical resolved shear stressto pass an array of precipitates follows the usual $((1/D + 1/L)^{-1})$ proportionality. In all cases but the smallest precipitate, the dislocations pass the obstacles by depositing dislocation segments in the disordered interphase boundary rather than shearing the precipitate or leaving Orowan loops in the matrix around the precipitate. An absorbed dislocation increases the stress necessary for a second dislocation to pass the precipitate also by absorbing dislocation segments into the boundary. Replacing the precipitate with a void of identical size and shape decreases the critical passing stress and work hardening contribution while an artificially impenetrable Mg$_{17}$Al$_{12}$ precipitate increases both. These insights will help improve mesoscale models of hardening by incoherent particles.