| 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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Jinschek, Joerg R.
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Effect of electron dose rate on the total dose tolerance limit in ZIF 8 metal organic framework (MOF)
- 2023Microstructural Evolution of One and Two step Heat Treatments on Electron Beam Powder Bed Fusion Fabricated Haynes 282
- 2023Microstructural Heterogeneities in Electron Beam Additively Manufactured Haynes 282
- 2023Observations of ‘far from equilibrium’ phenomena under in reactor thermal conditions using in situ TEM
- 2023In situ TEM observations of thermally activated phenomena under additive manufacturing process conditions
- 2023Strengthening of Pre-treated Aluminum During Ultrasonic Additive Manufacturing
- 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
- 2023In-situ S/TEM Visualization of Metal-to-Metal Hydride Phase Transformation of Magnesium Thin Films
- 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
- 2023Study of Phase-transformation Behavior in Additive Manufacturing of Nitinol Shape Memory Alloys by In Situ TEM Heating
- 2023Quantification of Microstructural Heterogeneities in Additively Manufactured and Heat-Treated Haynes 282
- 2022Preface to the special issuecitations
- 2022Strengthening of pretreated aluminum during ultrasonic additive manufacturingcitations
- 2009The Titan Environmental Transmission Electron Microscopecitations
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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.