| 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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Gallino, Isabella
Technische Universität Berlin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024A Novel Method for Preparation of Al–Ni Reactive Coatings by Incorporation of Ni Nanoparticles into an Al Matrix Fabricated by Electrodeposition in AlCl<sub>3</sub>:1‐Eethyl‐3‐Methylimidazolium Chloride (1.5:1) Ionic Liquid Containing Ni Nanoparticles
- 2024Thermodynamics, kinetics and crystallization behavior of the Pd31Ni42S27 bulk glass forming alloy
- 2024On the interplay of liquid-like and stress-driven dynamics in a metallic glass former observed by temperature scanning XPCS
- 2024Thermodynamics, kinetics and crystallization behavior of the Pd$_{31}$Ni$_{42}$S$_{27}$ bulk glass forming alloycitations
- 2023Denser glasses relax faster: Enhanced atomic mobility and anomalous particle displacement under in-situ high pressure compression of metallic glassescitations
- 2023Characterization of plastic-metal hybrid composites joined by means of reactive Al/Ni multilayers: evaluation of occurring thermal regime
- 2023Size-dependent vitrification in metallic glasses
- 2022On the devitrification of Cu–Zr–Al alloys: Solving the apparent contradiction between polymorphic liquid-liquid transition and phase separationcitations
- 2022On the formation of nanocrystalline aluminides during high pressure torsion of Al/Ni alternating foils and post-processing multilayer reactioncitations
- 2022Solid state joining of a cold rolled Zr-based bulk metallic glass to a wrought aluminum alloy by power ultrasonicscitations
- 2022Selective laser melting of a Fe-Si-Cr-B-C-based complex-shaped amorphous soft-magnetic electric motor rotor with record dimensionscitations
- 2022Selective laser melting of a Fe-Si-Cr-B-C-based complex-shaped amorphous soft-magnetic electric motor rotor with record dimensionscitations
- 2022Effect of composition and thermal history on deformation behavior and cluster connections in model bulk metallic glassescitations
- 2021Phase transformation and characterization of 3D reactive microstructures in nanoscale Al/Ni multilayerscitations
- 2021On the thermodynamics and its connection to structure in the Pt-Pd-Cu-Ni-P bulk metallic glass forming systemcitations
- 2021Ultrafast formation of single phase B2 AlCoCrFeNi high entropy alloy films by reactive Ni/Al multilayers as heat sourcecitations
- 2021Influence of Processing Route on the Surface Reactivity of Cu47Ti33Zr11Ni6Sn2Si1 Metallic Glass
- 2021Phase Transformation and Characterization of 3D Reactive Microstructures in Nanoscale Al/Ni Multilayerscitations
- 2020Vitrification decoupling from α-relaxation in a metallic glasscitations
- 2020Ultrafast scanning calorimetry of newly developed Au-Ga bulk metallic glassescitations
- 2019The role of Ga addition on the thermodynamics, kinetics, and tarnishing properties of the Au-Ag-Pd-Cu-Si bulk metallic glass forming systemcitations
- 2018Hierarchical aging pathways and reversible fragile-to-strong transition upon annealing of a metallic glass formercitations
- 2017On the high glass-forming ability of Pt-Cu-Ni/Co-P-based liquidscitations
- 2015Beta Relaxation and Low Temperature Aging of a Gold Based Bulk Metallic Glass
- 2015Linking Structure to Fragility in Bulk Metallic Glass-Forming Liquidscitations
- 2009Metallurgy Beyond Ironcitations
Places of action
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article
Denser glasses relax faster: Enhanced atomic mobility and anomalous particle displacement under in-situ high pressure compression of metallic glasses
Abstract
International audience ; Despite that metallic glasses are among the most studied metallic materials, still very little is known on the evolution of their unique structural, dynamical and elastic properties under compression, owing to the difficulty to perform in-situ high pressure experiments. Coupling the brightest x-rays available in synchrotrons with cutting edge high pressure technologies, we provide direct evidence of the microscopic structural and dynamical mechanisms occurring under in-situ high pressure compression and decompression in the GPa range, from the onset of the perturbation up to a severely-deformed state. We show that while pressure promotes density increasing through quasi-elastic structural deformations, the atomic mobility exhibits a hysteresis and is enhanced up to a factor 15 even at temperatures well below the glass transition. This surprising behavior results from a competition between fast avalanche-like atomic rearrangements and slow relaxation processes triggered by an anomalous super-diffusive collective particle displacement. These results provide new insights on the effect of deformation in non-ergodic materials and support the occurrence of string-like diffusion of liquid-like atoms in metallic glasses. They explain also the macroscopic impressive rejuvenation and strain hardening reported recently under ex-situ densifications.