| 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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Vermaut, Philippe
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024From heterogeneous nucleation to homogeneous spatial distribution of hardening precipitates: An in situ TEM study on cold-rolled AA2024-T3 (Al–Cu–Mg)citations
- 2023Mechanisms underlying enhanced strength-ductility combinations in TRIP/TWIP Ti-12Mo alloy engineered via isothermal omega precipitationcitations
- 2023{332}<113> mechanical detwinning as a deformation mechanism in the β-metastable Ti-15Mo alloy during cyclic loadingcitations
- 2020Effect of Mo, Ta, V and Zr on a duplex bcc+orthorhombic refractory complex concentrated alloy using diffusion couplescitations
- 2019On the heterogeneous nature of deformation in a strain-transformable beta metastable Ti-V-Cr-Al alloycitations
- 2019Design and development of a dual-phase TRIP-TWIP alloy for enhanced mechanical propertiescitations
- 2018Martensite crystal structure in Ru-based high temperature shape memory alloyscitations
- 2017From diluted solid solutions to high entropy alloys: On the evolution of properties with composition of multi-components alloyscitations
- 2016Constrained hierarchical twinning in Ru-based high temperature shape memory alloyscitations
- 2012On the design of new β-metastable titanium alloys with improved work hardening rate thanks to simultaneous TRIP and TWIP effectscitations
- 2012High Performance Beta Titanium Alloys as a New Material Perspective for Cardiovascular Applicationscitations
- 2011Beta titanium alloys with very high ductility induced by complex deformation mechanisms: A new material perspective for coronary stent applicationscitations
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article
Martensite crystal structure in Ru-based high temperature shape memory alloys
Abstract
International audience ; High temperature shape memory alloys RuNb and RuTa were investigated by X-ray diffraction in order to determine the structure of the low temperature β” martensite. Powder X-ray diffraction and Rietveld analysis confirm the monoclinic symmetry and allow a precise determination of the atom positions. The low temperature microstructure is the result of a martensitic transformation from a tetragonal β′ martensite. The analysis of how it is controlled by the space groups of the two phases and by their relative orientation is performed by transmission electron microscopy. A three level twinned microstructure is recognized in the β” phase. The investigation at the smallest scale twins reveals the presence of wavy contrast boundaries which are typical for translation interfaces. High resolution transmission electron microscopy images, accompanied by phase contrast imaging analysis, have been used to determine the translation vectors associated to the interfaces. These displacements are the translations of the tetragonal β′ phase which are lost during the transformation. The combination of X-ray diffraction and transmission electron microscopy investigation allows the suggestion of a global distortion mechanism that explains the atomic displacements in the β” form.