| 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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Cloetens, Peter
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Hard X-ray nanoscale Imaging of Carbon Fibre Composites using Near-Field Ptychography
- 2024Hard X-ray nanoscale Imaging of Carbon Fibre Composites using Near-Field Ptychography
- 2023Quantifying electrochemical degradation in single-crystalline LiNi0.8Mn0.1Co0.1O2–graphite pouch cells through operando X-ray and post-mortem investigations
- 2023Numerical microstructural optimization for the hydrogen electrode of solid oxide cellscitations
- 2022A stochastic geometrical 3D model for time evolution simulation of microstructures in SOC-electrodescitations
- 2020Ultrafine eutectic Ti-Fe-based alloys processed by additive manufacturing – A new candidate for high temperature applicationscitations
- 2020Ultrafine eutectic Ti-Fe-based alloys processed by additive manufacturing – A new candidate for high temperature applicationscitations
- 2019Nanovoid morphology and distribution in deformed High Density PolyEthylene observed at the nanometric scale
- 2017Inducing Stable $alpha$ + $beta$ Microstructures during Selective Laser Melting of Ti-6Al-4V Using Intensified Intrinsic Heat Treatmentscitations
- 2017Using metastability to engineer the microstructure of Ti-6V-4Al produced by selective laser melting
- 2017Inducing Stable alpha plus beta Microstructures during Selective Laser Melting of Ti-6Al-4V Using Intensified Intrinsic Heat Treatmentscitations
- 2015Three-dimensional characterization of fatigue-relevant intermetallic particles in high-strength aluminium alloys using synchrotron X-ray nanotomographycitations
- 2014Quantitative microstructure characterization of a Ni-YSZ bi-layer coupled with simulated electrode polarizationcitations
- 2014Anisotropic elasticity of silicon and its application to the modelling of X-ray opticscitations
- 2012Non-destructive 3-D reconstruction of the martensitic phase in a dual-phase steel using synchrotron holotomographycitations
- 2011The effect of the connectivity of rigid phases on strength of Al-Si alloyscitations
- 2009Polycaprolactone nanomesh cultured with hMSC evaluated by synchrotron tomography
- 2009New opportunities for 3D materials science of polycrystalline materials at the micrometre lengthscale by combined use of X-ray diffraction and X-ray imagingcitations
- 2009Projection phase contrast microscopy with a hard x-ray nanofocused beam: Defocus and contrast transfercitations
- 20093D architecture and load partition in eutectic Al-Si alloyscitations
- 2008In Situ X-Ray tomography studies of microstructural evolution combined with 3D modellingcitations
- 2006Advances in synchrotron radiation microtomographycitations
- 2005Permeability assessment by 3D interdendritic flow simulations on microtomography mappings of Al–Cu alloyscitations
- 2005Three dimensional imaging of damage in structural materials using high resolution micro-tomographycitations
Places of action
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article
Ultrafine eutectic Ti-Fe-based alloys processed by additive manufacturing – A new candidate for high temperature applications
Abstract
High temperature laser powder bed fusion Eutectic Ti-Fe alloys Near-field synchrotron ptychographic X-ray computed tomography Ultrafine microstructures High temperature deformation a b s t r a c t The development of metals tailored to the metallurgical conditions of laser-based additive manufacturing is crucial to advance the maturity of these materials for their use in structural applications. While effort s in this regard are being carried out around the globe, the use of high strength eutectic alloys have, so far, received minor attention, although previous works showed that rapid solidification techniques can result in ultrafine microstructures with excellent mechanical performance, albeit for small sample sizes. In the present work, a eutectic Ti-32.5Fe alloy has been produced by laser powder bed fusion aiming at exploiting rapid solidification and the capability to produce bulk ultrafine microstructures provided by this processing technique. Process energy densities between 160 J/mm ³ and 180 J/mm ³ resulted in a dense and crack-free material with an oxygen content of ~0.45 wt.% in which a hierarchical microstructure is formed by μm-sized η-Ti 4 Fe 2 O x dendrites embedded in an ultrafine eutectic β-Ti/TiFe matrix. The microstructure was studied three-dimensionally using near-field synchrotron ptychographic X-ray computed tomography with an actual spatial resolution down to 39 nm to analyse the morphology of the eutectic and dendritic structures as well as to quantify their mass density, size and distribution. Inter-lamellar spacings down to ~30-50 nm were achieved, revealing the potential of laser-based additive manufacturing to generate mi-crostructures smaller than those obtained by classical rapid solidification techniques for bulk materials. The alloy was deformed at 600 °C under compressive loading up to a strain of ~30% without damage formation, resulting in a compressive yield stress of ~800 MPa. This study provides a first demonstration of the feasibility to produce eutectic Ti-Fe alloys with ultra-fine microstructures by laser powder bed fusion that are suitable for structural applications at elevated temperature.