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| Naji, M. |
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| Kočí, Jan | Prague |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Baptista, Ana Catarina
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Topics
Publications (11/11 displayed)
- 2024Evolution of microstructure and deformation mechanisms in a metastable Fe42Mn28Co10Cr15Si5 high entropy alloycitations
- 2024Unveiling the microstructure evolution and mechanical properties in a gas tungsten arc-welded Fe–Mn–Si–Cr–Ni shape memory alloycitations
- 2023A facile blow spinning technique for green cellulose acetate/polystyrene composite separator for flexible energy storage devicescitations
- 2022Drug Delivery from PCL/Chitosan Multilayer Coatings for Metallic Implantscitations
- 2020PolySensecitations
- 2020Conductive electrospun Polyaniline/Polyvinylpyrrolidone nanofibers: Electrical and morphological characterization of new yarns for electronic textilescitations
- 2020Conductive electrospun Polyaniline/Polyvinylpyrrolidone nanofibers: Electrical and morphological characterization of new yarns for electronic textilescitations
- 2019Synthesis of thermoelectric magnesium-silicide pastes for 3D printing, electrospinning and low-pressure spraycitations
- 2017Hybrid polysaccharide-based systems for biomedical applicationscitations
- 2016Vanadium Pentoxide Alloyed with Graphite for Thin-Film Thermal Sensorscitations
- 2016Natural Nanofibres for Composite Applicationscitations
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article
Evolution of microstructure and deformation mechanisms in a metastable Fe42Mn28Co10Cr15Si5 high entropy alloy
Abstract
In this work, a combination of in-situ high synchrotron X-ray diffraction and electron backscattered diffraction were used to systematically investigate the activation and evolution of the deformation mechanisms in an as-cast Fe42Mn28Co10Cr15Si5 metastable high entropy alloy deformed until fracture at room temperature. This work unveils the critical role of the dual-phase γ-f.c.c. / ε-h.c.p. microstructure on the deformation response of the alloy. The different deformation modes, i.e., slip, transformation induced plasticity (TRIP) and transformation induced twinning (TWIP), were seen to initiate at different loading stresses and then to overlap. Quantitative microstructural characterization, which included the evolution of the phase fraction, stress partitioning, dislocation density, c/a ratio and lattice strain for different planes, was performed to elucidate the role of each phase on the macroscopic mechanical response of the metastable high entropy alloy. Furthermore, the magnitude of the different strengthening contributions has been quantified for the first time.