| 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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Yankova, Maria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Modelling the Effect of Residual Stresses on Damage Accumulation Using a Coupled Crystal Plasticity Phase Field Fracture Approach
- 2023Interaction of monoclinic ZrO2 grain boundaries with oxygen vacancies, Sn and Nb - implications for the corrosion of Zr alloy fuel cladding
- 2023Bridging Length Scales Efficiently Through Surrogate Modellingcitations
- 2022Capturing the Temperature Dependence of Cleavage Fracture Toughness in the Ductile-to-Brittle Transition Regime in Ferritic Steels using an Improved Engineering Local Approach
- 2021Incorporation of obstacle hardening into local approach to cleavage fracture to predict temperature effects in the ductile to brittle transition regimecitations
- 2021The Importance of Substrate Grain Orientation on Local Oxide Texture and Corrosion Performance in α-Zr Alloyscitations
- 2019Using local approaches to fracture to quantify the local conditions during the ductile-to-brittle transition in ferritic steels
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conferencepaper
Using local approaches to fracture to quantify the local conditions during the ductile-to-brittle transition in ferritic steels
Abstract
Ferritic steels, which are typically used for critical reactor components, including reactor pressure vessels (RPV), exhibit a ductile-to-brittle transition. The fracture process has been linked to the interaction between matrix plasticity and second phase particles. Under high-enough loads, a competition exists between particles rupturing to form micro-cracks and particles decohering to form micro-voids, which are prerequisites for cleavage and ductile fracture, respectively. Currently, there is no sufficiently adequate model that can predict the competition between these two failure mechanisms and hence fracture toughness values in ferritic steels. In this work, failure probability has been estimated using a local approach to cleavage fracture incorporating the statistics of micro-cracks. It is shown that changes in the deformation material properties are not enough to capture the significant changes in fracture toughness. Instead, a correction to the fraction of particles converted to eligible for cleavage micro-cracks is proposed. The method is developed for the RPV steel 22NiMoCr37 and using experimental data for a standard compact tension C(T) specimen. The proposed approach offers more accurate calculations of fracture toughness in the ductile-to-brittle transition regime using only decoupled models, which is attractive for engineering practice.