| 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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Salvati, E.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Low cycle fatigue behaviour of cellular materials: Experimental comparative study of strut-based and gyroid structures made of additively manufactured 316L steelcitations
- 2022Improving ultra-fast charging performance and durability of all solid state thin film Li-NMC battery-on-chip systems by in situ TEM lamella analysiscitations
- 2022Microstructural observations of an AA6082-T6 Hybrid Metal Extrusion & Bonding (HYB) butt weldcitations
- 2022A method for yield and cycle time improvements in Al alloy casting with enhanced conductivity steel for die constructioncitations
- 2022Stress-assisted thermal diffusion barrier breakdown in ion beam deposited Cu/W nano-multilayers on Si substrate observed by in Situ GISAXS and transmission EDXcitations
- 2021Evolution of stress fields during crack growth and arrest in a brittle-ductile CrN-Cr clamped-cantilever analysed by X-ray nanodiffraction and modellingcitations
- 2020An experimental and numerical analysis of residual stresses in a TIG weldment of a single crystal nickel-base superalloycitations
- 2020Nano-scale residual stress depth profiling in Cu/W nano-multilayers as a function of magnetron sputtering pressurecitations
- 2020Synchrotron X-ray scattering analysis of nylon-12 crystallisation variation depending on 3D printing conditionscitations
- 2020Evolution of stress fields during crack growth and arrest in a brittle-ductile CrN-Cr clamped-cantilever analysed by X-ray nanodiffraction and modellingcitations
- 2020Evolution of thermal and mechanical properties of Nitinol wire as a function of ageing treatment conditionscitations
- 2019Datasets for multi-scale diffraction analysis (synchrotron XRD and EBSD) of twinning-detwinning during tensile-compressive deformation of AZ31B magnesium alloy samplescitations
- 2019Micro-scale measurement and FEM modelling of residual stresses in AA6082-T6 Al alloy generated by wire EDM cuttingcitations
- 2019Nanoscale depth profiling of residual stresses due to fine surface finishingcitations
- 2018Nanoscale residual stress depth profiling by Focused Ion Beam milling and eigenstrain analysiscitations
- 2017Eigenstrain reconstruction of residual strains in an additively manufactured and shot peened nickel superalloy compressor bladecitations
- 2016Quantifying eigenstrain distributions induced by focused ion beam damage in siliconcitations
Places of action
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article
Evolution of stress fields during crack growth and arrest in a brittle-ductile CrN-Cr clamped-cantilever analysed by X-ray nanodiffraction and modelling
Abstract
<p>In order to understand the fracture resistance of nanocrystalline thin films, it is necessary to assess nanoscopic multiaxial stress fields accompanying crack growth during irreversible deformation. Here, a clamped cantilever with dimensions of 200 × 23.7 × 40 μm<sup>3</sup> was machined by focused ion beam milling from a thin film composed of four alternating CrN and Cr layers. The cantilever was loaded to 460 mN in two steps and multiaxial strain distributions were determined by in situ cross-sectional X-ray nanodiffraction. Characterization in as-deposited state revealed the depth variation of fibre texture and residual stress across the layers. The in situ experiment indicated a strong influence of the residual stresses on the cross-sectional stress fields evolution and crack arrest capability at the CrN-Cr interface. In detail, an effective negative stress intensity of −5.9 ± 0.4 MPa m<sup>½</sup> arose as a consequence of the residual stress state. Crack growth in the notched Cr layer occurred at a critical stress intensity of 2.8 ± 0.5 MPa m<sup>½</sup>. The results were complemented by two-dimensional numerical simulation to gain further insight into the elastic-plastic deformation evolution. The quantitative experimental and modelling results elucidate the stepwise nature of fracture advancement across the alternating brittle and ductile layers and their interfaces.</p>