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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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document
Laves phases in Mg-Al-Ca alloys and their effect on mechanical properties
Abstract
Mg-Al-Ca alloys with Laves phase reinforcement are suitable for structural applications. The composition, crystal structure, and distribution of Laves phases can be tuned by the alloy composition and heat treatment, which subsequently influence their mechanical properties. In this study, three model alloys Mg-6Al-2Ca, Mg-5Al-3Ca and Mg-4Al-4Ca were investigated, which include C15, C36, and C14 Laves phases. The as-cast alloys have interconnected Laves phases that form a skeleton structure. After annealing, they became more rounded particles, while the metastable C36 phase was transformed to C15. The Laves phases in different crystal structures exhibit distinct ranges of chemical compositions and lattice parameters. Well defined orientation relationships were observed between small C15 platelets and the Mg matrix (Mg(0002) // C15(1 1 1), Mg[112̅0] // C15[112̅]). Another pair of parallel orientations was found between Mg(11̅01) and the c-plane of hexagonal C36/C14. Nevertheless, most coarsened Laves phases have incoherent interfaces with the matrix and hinder dislocation slip transfer. The annealed alloys have lower yield strength than their as-cast counterparts, but higher ductility or ultimate tensile strength. The yield strengths of as-cast alloys are correlated to the interconnectivity of the skeleton, whereas those of annealed alloys are related to the spacing between Laves phases.