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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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Bastos Da Silva Fanta, Alice
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2023Thermal stability of hierarchical microstructural features in additively manufactured stainless steelcitations
- 2023Study in Phase-Transformation Temperature in Nitinol by In Situ TEM Heating
- 2023The effect of cyclic heat treatment on microstructure evolution during Plasma Arc Additive Manufacturing employing an SEM in-situ heating study
- 2023Probing the Effects of Cyclic Heating in Metal Additive Manufacturing by means of a Quasi in situ EBSD Study
- 2023Study of Phase-transformation Behavior in Additive Manufacturing of Nitinol Shape Memory Alloys by In Situ TEM Heating
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022High resolution crystal orientation mapping of ultrathin films in SEM and TEMcitations
- 2021Recent developments for the characterization of crystals and defects at the nanoscale using on-axis TKD in SEM
- 2021Challenges and perspectives of Transmission Kikuchi Diffraction for nanocrystalline materials characterization
- 2020Aminopropylsilatrane Linkers for Easy and Fast Fabrication of High-Quality 10 nm Thick Gold Films on SiO2 Substratescitations
- 2020Aminopropylsilatrane Linkers for Easy and Fast Fabrication of High-Quality 10 nm Thick Gold Films on SiO 2 Substratescitations
- 2019Metal-polymer hybrid nanomaterials for plasmonic ultrafast hydrogen detectioncitations
- 2018Optimal microstructural design for high thermal stability of pure FCC metals based on studying effect of twin boundaries character and network of grain boundariescitations
- 2017Influence of Ti and Cr Adhesion Layers on Ultrathin Au Filmscitations
- 2017Iron Oxide Films Prepared by Rapid Thermal Processing for Solar Energy Conversioncitations
- 2017Time-of-Flight Three Dimensional Neutron Diffraction in Transmission Mode for Mapping Crystal Grain Structurescitations
- 2017Time-of-Flight Three Dimensional Neutron Diffraction in Transmission Mode for Mapping Crystal Grain Structurescitations
- 2013Partial transformation of austenite in Al-Mn-Si TRIP steel upon tensile straining: an in situ EBSD studycitations
- 20093-D Analysis of Graphite Nodules in Ductile Cast Iron Using FIB-SEM
- 2008Three-dimensional EBSD study on the relationship between triple junctions and columnar grains in electrodeposited Co-Ni filmscitations
- 2007Orientation microscopy on nanostructured electrodeposited NiCo-Films
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document
Study in Phase-Transformation Temperature in Nitinol by In Situ TEM Heating
Abstract
Shape memory alloys (SMAs) are widely used in several applications, such as actuators, sensors and dampers, due to their attractive property of shape alloy effects (SME). SME is a capability of SMAs to regain the original shape after loading deformation by heating through the reversible martensitic transformation to nullify the strain. According to the stress-strain curve for the SMAs, the applied strain and the working temperature are used to determine the stress of the SMA and its phase. Controlling the structural transformation window by varying the different components or manufacturing can be used to achieve better performance in SMAs. As a result, an in-depth understanding of the correlation between the structural variation and the applied temperature can provide insights to improve SMAs material designs.<br/><br/>To capture this microstructural variation on heating in real-time, in situ heating experiments in transmission electron microscopy (TEM) are used to study the SME in laser powder bed fusion (L-PBF)-NiTi alloys. In the present study, TEM samples from different areas of melt pool were prepared by focused ion beam (FIB) and placed on the MEMS-based microheaters for in-situ TEM heating experiments to study the phase transformation with increasing temperature.<br/><br/>In LPBF, since the laser processing introduces the inhomogeneous heating profile at each point, this creates the melt pool with non-uniform composition distribution perpendicular to the build direction. To explore the influences of the inhomogeneous distribution on the phase transformation window, the reversible martensitic transformation has been investigated on different positions of the melt pool in in-situ TEM heating experiments. Studying microstructural transformation in heating experiments provides essential insights to further optimize process parameters in (additive) manufacturing.