| 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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Maresca, Francesco
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steelscitations
- 2024Atomistic simulations of structure and motion of twin interfaces reveal the origin of twinning in NiTi shape memory alloyscitations
- 2024Atomistic simulations of structure and motion of twin interfaces reveal the origin of twinning in NiTi shape memory alloyscitations
- 2024Present and future of atomistic simulations of dislocation plasticity
- 2023Predicting dislocation density in martensite ab-initiocitations
- 2022On the impact of lattice parameter accuracy of atomistic simulations on the microstructure of Ni-Ti shape memory alloyscitations
- 2022On the impact of lattice parameter accuracy of atomistic simulations on the microstructure of Ni-Ti shape memory alloyscitations
- 2022Cross-kink unpinning controls the medium-to high-temperature strength of body-centered cubic NbTiZr medium-entropy alloycitations
- 2021Strength can be controlled by edge dislocations in refractory high-entropy alloyscitations
- 2021Revisiting the martensite/ferrite interface damage initiation mechanism: The key role of substructure boundary slidingcitations
- 2020Edge Dislocations Can Control Yield Strength in Refractory Body-Centered-Cubic High Entropy Alloys
- 2020Measurement and prediction of the transformation strain that controls ductility and toughness in advanced steelscitations
- 2020Vanadium is an optimal element for strengthening in both fcc and bcc high-entropy alloyscitations
Places of action
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article
Revisiting the martensite/ferrite interface damage initiation mechanism: The key role of substructure boundary sliding
Abstract
Martensite/ferrite (M/F) interface damage plays a critical role in controlling failure of dual-phase (DP) steels and is commonly understood to originate from the large phase contrast between martensite and ferrite. This however conflicts with a few, recent observations, showing that considerable M/F interface damage initiation is often accompanied by apparent martensite island plasticity and weak M/F strain partitioning. In fact, martensite has a complex hierarchical structure which induces a strongly heterogeneous and orientation-dependent plastic response. Depending on the local stress state, (lath) martensite is presumed to be hard to deform based on common understanding. However, when favourably oriented, substructure boundary sliding can be triggered at a resolved shear stress which is comparable to that of ferrite. Moreover, careful measurements of the M/F interface structure indicate the occurrence of sharp martensite wedges protruding into the ferrite and clear steps in correspondence with lath boundaries, constituting a jagged M/F interfacial morphology that may have a large effect on the M/F interface behaviour. By taking into account the substructure and morphology features, which are usually overlooked in the literature, this contribution re-examines the M/F interface damage initiation mechanism. A systematic study is performed, which accounts for different loading conditions, phase contrasts, residual stresses/strains resulting from the preceding martensitic phase transformation, as well as the possible M/F interfacial morphologies. Crystal plasticity simulations are conducted to include inter-lath retained austenite (RA) films enabling the substructure boundary sliding. The results show that the substructure boundary sliding, which is the most favourable plastic deformation mode of lath martensite, can trigger M/F interface damage and hence control the failure behaviour of DP steels. The present finding may change the way in which M/F interface damage initiation is understood as a critical failure mechanism in DP steels.