693.932 PEOPLE
| 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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Connolley, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (38/38 displayed)
- 2024A micromechanical study of heat treatment induced hardening in α -brasscitations
- 2024Revealing per-grain and neighbourhood stress interactions of a deforming ferritic steel via three-dimensional X-ray diffractioncitations
- 2024Investigating grain-resolved evolution of lattice strains during plasticity and creep using 3DXRD and crystal plasticity modellingcitations
- 2024In-Situ synchrotron investigation of elastic and tensile properties of oxide dispersion strengthened EUROFER97 steel for advanced fusion reactorscitations
- 2023The effect of porosity on strain evolution and failure of soldered, small-diameter, thin-walled metallic pipescitations
- 2023Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteriescitations
- 2023In situ correlative observation of humping-induced cracking in directed energy deposition of nickel-based superalloys
- 2023Grain-level effects on in-situ deformation-induced phase transformations in a complex-phase steel using 3DXRD and EBSDcitations
- 2023Per-grain and neighbourhood stress interactions during deformation of a ferritic steel obtained using three-dimensional X-ray diffractioncitations
- 20223D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradientcitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloy:Tensile tests under high energy synchrotron diffractioncitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloycitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel productioncitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel productioncitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca 3 Al 2 O 6 composite catalysts for biodiesel productioncitations
- 2021Correlative synchrotron X-ray imaging and diffraction of directed energy deposition additive manufacturingcitations
- 2021Estimating single-crystal elastic constants of polycrystalline β metastable titanium alloy: A Bayesian inference analysis based on high energy X-ray diffraction and micromechanical modelingcitations
- 2020In situ measurement of elastic and total strains during ambient and high temperature deformation of a polygranular graphitecitations
- 2020Unifying the effects of in and out-of-plane constraint on the fracture of ductile materialscitations
- 2020A novel electromagnetic apparatus for in-situ synchrotron X-ray imaging study of the separation of phases in metal solidificationcitations
- 2019Validating 3D two-parameter fracture mechanics models for structural integrity assessmentscitations
- 2019Localised prior strain-hardening increases the tearing resistance of ductile steelcitations
- 2019Application of neutron imaging to detect and quantify fatigue crackingcitations
- 2019Understanding the Highly Dynamic Phenomena in Ultrasonic Melt Processing by Ultrafast Synchrotron X-ray Imaging
- 2018In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2018Revealing internal flow behaviour in arc welding and additive manufacturing of metalscitations
- 2018Revealing internal flow behaviour in arc welding and additive manufacturing of metalscitations
- 20183D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisationcitations
- 2018In-situ synchrotron X-ray radiography observation of primary Al 2 Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2017In-situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloyscitations
- 2017In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2017A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processingcitations
- 2017In situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloys
- 2016Direct observation of elastic and plastic strain fields during ductile tearing of a ferritic steelcitations
- 2016A refining mechanism of primary Al3Ti intermetallic particles by ultrasonic treatment in the liquid statecitations
- 2016A refining mechanism of primary Al 3 Ti intermetallic particles by ultrasonic treatment in the liquid statecitations
- 2015Transgranular liquation cracking of grains in the semi-solid state
- 2001Initiation and growth of short cracks in u-notch bend specimens of superalloy IN718 during high temperature low cycle fatigue.
Places of action
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article
Correlative synchrotron X-ray imaging and diffraction of directed energy deposition additive manufacturing
Abstract
The governing mechanistic behaviour of Directed Energy Deposition Additive Manufacturing (DED-AM) is revealed by a combined in situ and operando synchrotron X-ray imaging and diffraction study of a nickel-base superalloy, IN718. Using a unique DED-AM process replicator, real-space imaging enables quantification of the melt-pool boundary and flow dynamics during solidification. This imaging knowledge was also used to inform precise diffraction measurements of temporally resolved microstructural phases during transformation and stress development with a spatial resolution of 100 µm. The diffraction quantified thermal gradient enabled a dendritic solidification microstructure to be predicted and coupled to the stress state. The fast cooling rate entirely suppressed the formation of secondary phases or recrystallisation in the solid-state. Upon solidification, the stresses rapidly increase to the yield strength during cooling. This insight, combined with the large solidification range of IN718 suggests that the accumulated plasticity exhausts the ductility of the alloy, causing liquation cracking. This study has revealed the mechanisms that govern the formation of highly non-equilibrium microstructures during DED-AM.