693.932 PEOPLE
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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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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Azevedo, Nuno Monteiro |
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Yang, Fan
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Topics
Publications (31/31 displayed)
- 2024A fundamental study of physical mechanisms of wineglass-shaped fusion zone profile in laser melting
- 2024Impact of sulfur addition on the structure and dynamics of Ni–Nb alloy meltscitations
- 2024Impact of sulfur addition on the structure and dynamics of Ni–Nb alloy meltscitations
- 2024Experimental and numerical investigations of suppression mechanisms by an oscillating magnetic field on process porosity during laser beam welding
- 2024On the interplay of liquid-like and stress-driven dynamics in a metallic glass former observed by temperature scanning XPCS
- 2024Numerical study on the temperature characteristic of material absorptivity and its significance in high-power laser beam welding
- 2024Numerical studies of magnetohydrodynamic technology in suppressing process porosity during laser beam welding
- 2024Newly developed aerodynamic levitation device for neutron scattering experiments
- 2024Assessment of keyhole stability in laser beam welding with external magnetic field using numerical simulation
- 2024A Nanomechanical Transducer for Remote Signal Transmission onto the Tympanic Membrane–Playing Music on a Different Drumcitations
- 2023Numerical analysis of the influence of an auxiliary oscillating magnetic field on suppressing the porosity formation in deep penetration laser beam alloys of aluminum alloys
- 2023Numerical analysis of the effect of an oscillating metal vapor plume on the keyhole and molten pool behavior during deep penetration laser beam weldingcitations
- 2023Ni-Nb-P-based bulk glass-forming alloys: Superior material properties combined in one alloy familycitations
- 2023Numerical analysis of the effect of the metal vapor plume on the keyhole and the molten pool behavior during deep penetration laser beam welding
- 2023Relationship of the atomic dynamics and excess volume of a copper rich Cu76Ti24 alloy melt
- 2023Boosting Thermoelectric Power Factor of Carbon Nanotube Networks with Excluded Volume by Co-Embedded Microparticlescitations
- 2023Directly observing atomic-scale relaxations of a glass forming liquid using femtosecond X-ray photon correlation spectroscopycitations
- 2022Advanced structural analysis of a laser additive manufactured Zr-based bulk metallic glass along the build heightcitations
- 2021High strain rate in situ micropillar compression of a Zr-based metallic glasscitations
- 2021Changes in the crystallization sequence upon sulfur addition in the Zr$_{52.5}$Cu$_{17.9}$Ni$_{14.6}$Al$_{10}$Ti$_{5}$ bulk metallic glass-forming liquid revealed by in situ high-energy x-ray diffractioncitations
- 2021Harmonized comparison of virgin steel production using biomass with carbon capture and storage for negative emissionscitations
- 2021Intrinsic relaxation in a supercooled ZrTiNiCuBe glass forming liquidcitations
- 2020Fracture and fatigue behaviour of a laser additive manufactured Zr-based bulk metallic glasscitations
- 2020Valence bond fluctuations in the Kitaev spin modelcitations
- 2020Valence bond fluctuations in the Kitaev spin modelcitations
- 2020Relating fracture toughness to micro-pillar compression response for a laser powder bed additive manufactured bulk metallic glasscitations
- 2019Mechanochemical Effects of Adsorbates at Nanoelectromechanical Switch Contactscitations
- 2019Structural periodicity in laser additive manufactured Zr-based bulk metallic glasscitations
- 2016Tailored platinum-nickel nanostructures on zirconia developed by metal casting, internal oxidation and dealloyingcitations
- 2012PVDF-based Polymer Blend Films for Fuel Cell Membranescitations
- 2007Gallium-doped zinc oxide films as transparent electrodes for organic solar cell applicationscitations
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article
Relationship of the atomic dynamics and excess volume of a copper rich Cu76Ti24 alloy melt
Abstract
<jats:p>We investigate the atomic dynamics of a Cu-rich Cu76Ti24 alloy between 1223 K and 1453 K using the quasi-elastic neutron scattering technique. The obtained mean Cu/Ti self-diffusion coefficient D exhibits an Arrhenius-like temperature dependence with an activation energy of 0.46�0.02 eV per atom. Compared with those of the pure elements at a given temperature, D is slower than that for pure Cu, but similar to pure Ti. This slowing down of the liquid dynamics upon alloying has been observed for most binary alloy systems. However, in this study, the packing fraction of the Cu-Ti alloy is lower than that of the pure elements, which can be explained by the positive excess volume of the Cu-Ti system. Therefore, the compositional dependence of the atomic dynamics cannot be linked to a macroscopic packing argument. Only, the atomic dynamics is not correlated with an increase of the average packing fraction of the melt.</jats:p>