| 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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Vermeij, Tijmen
Swiss Federal Laboratories for Materials Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steelscitations
- 2024Magnetron sputter deposition of amorphous silicon–SiO 2 quantized nanolaminatescitations
- 2024+SSLIP: Automated Radon-assisted and Rotation-corrected identification of complex HCP slip system activity fields from DIC data
- 2024A quasi-2D integrated experimental–numerical approach to high-fidelity mechanical analysis of metallic microstructurescitations
- 2024Enhancement of copper nanoparticle yield in magnetron sputter inert gas condensation by applying substrate bias voltage and its influence on thin film morphologycitations
- 2024Magnetron Sputter Deposition of Amorphous Silicon–SiO<sub>2</sub> Quantized Nanolaminatescitations
- 2023Micro-mechanical deformation behavior of heat-treated laser powder bed fusion processed Ti-6Al-4Vcitations
- 2022Plasticity, localization, and damage in ferritic-pearlitic steel studied by nanoscale digital image correlationcitations
- 2022A Nanomechanical Testing Framework Yielding Front&Rear-Sided, High-Resolution, Microstructure-Correlated SEM-DIC Strain Fieldscitations
- 2022Influence of porosity and blistering on the thermal fatigue behavior of tungstencitations
- 2021Revisiting the martensite/ferrite interface damage initiation mechanism: The key role of substructure boundary slidingcitations
- 2021Recrystallization-mediated crack initiation in tungsten under simultaneous high-flux hydrogen plasma loads and high-cycle transient heatingcitations
Places of action
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article
Influence of porosity and blistering on the thermal fatigue behavior of tungsten
Abstract
Tungsten is the leading plasma-facing material (PFM) for nuclear fusion applications. It faces severe operating conditions, including intense hydrogen plasma exposure and high-cycle transient heat loading, which create various defects in tungsten. Additionally, defects have often already been introduced during manufacturing. Little is understood regarding the synergistic effect of such defects on the lifetime of tungsten so far. Here, we investigate the influence of porosity and blistering on the thermal fatigue behavior of tungsten. The pores resulted from powder metallurgy whereas the blistering was induced by hydrogen plasma exposure. Both conditions were subjected to transient heat loading by a high-power pulsed laser. The exposure was performed in the linear plasma generator Magnum-PSI, which closely mimics the expected particle and heat flux in the world's largest fusion experiment, ITER. Both porosity and blistering degraded the fatigue resistance of tungsten. Pores tended to aggregate at high-angle grain boundaries (HAGBs) and assisted crack initiation therein, as revealed by focused ion beam cross-sectioning and electron backscatter diffraction (EBSD) analysis. The blisters were characteristic of subsurface cavities, which were located at a depth close to the surface roughness induced by transient heat loading. The stress concentration at the tip of the cavities is considered to promote crack initiation. The results highlight the necessity of a 'life cycle assessment' of the tungsten PFM for nuclear fusion reactors.