| 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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Petrov, R.
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Publications (9/9 displayed)
- 2022Locating dust and molecules in the inner circumstellar environment of R Sculptoris with MATISSEcitations
- 2022Locating dust and molecules in the inner circumstellar environment of R Sculptoris with MATISSEcitations
- 2019Lath martensite plasticity enabled by apparent sliding of substructure boundariescitations
- 2018Martensite crystallography and chemistry in dual phase and fully martensitic steelscitations
- 2017Multiscale characterization of White Etching Cracks (WEC) in a 100Cr6 bearing from a thrust bearing test rigcitations
- 2015Microstructural evolution during ultrafast heat treament of medium carbon steels
- 2015Isothermal transformations in advanced high strength steels below martensite start temperaturecitations
- 2011Defect evolution during annealing of deformed FeSi alloys studied by positron annihilation spectroscopycitations
- 2001Effect of the initial microstructure and deformation on the recrystallization of a cold rolled trip-assisted steel.
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article
Lath martensite plasticity enabled by apparent sliding of substructure boundaries
Abstract
Lath martensite is widely present in advanced high strength steels as the key strengthening phase. Unexpectedly high ductility of lath martensite has been reported in the literature in both single-phase and multi-phase steels, however, without systematic identification of the underlying plasticity mechanisms. In this study, first, well-defined micro-tensile tests are carried out on fully martensitic steel with a clean large substructure and a variety of substructure boundary orientations with respect to the loading direction. Two deformation mechanisms of lath martensite were identified, namely, intra-lath crystallographic slip and apparent substructure boundary sliding, that compete with each other to carry the overall plasticity. The condition under which these two mechanisms are active has been clarified. It is found that boundary sliding is more easily activated than intra-lath crystallographic slip. In addition, for dual phase steel, as an example of multi-phase steels, the probability for sliding of lath martensite boundaries was estimated by boundary orientation characterization and micro-tensile tests. The results suggest that the apparent boundary sliding is also important for lath-martensite-containing multi-phase steels, which would explain prior reports in the literature of unexpectedly high local strains in the martensite regions.