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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing: Advanced Characterization With Synchrotron, Neutron, and In Situ Laboratory-scale Techniques IV
Presentation Title X-ray imaging of Blown-powder Directed Energy Deposition with melt pool flow control via magnetic fields
Author(s) Harry Edward Chapman, Xianqiang Fan, Imogen Cowley, Ivars Krastins, Sebastian Marussi, Martyn A. Jones, Alexander Rack, Andrew Kao, Chu Lun Alex Leung, Peter D. Lee
On-Site Speaker (Planned) Harry Edward Chapman
Abstract Scope Directed Energy Deposition (DED) Additive Manufacturing (AM) utilises a blown powder feedstock and a laser heat input to build up near net shape components in a layer wise fashion, for repair or reconditioning applications, particularly in the aerospace and automotive sectors. Process optimisation is a key concern in DED, with narrow processing windows and a larger build scale compared to some other AM techniques. Flow behaviour in DED melt pools plays a critical role in the process-structure-properties relationship. It can impact thermal gradients, solute transport, and localised undercooling, all of which are controlling factors for grain structure and defect formation. In this work, we use in situ synchrotron radiography to examine the impact of an applied static magnetic field on the melt pool flow in a nickel superalloy, demonstrating how through the thermoelectric magnetohydrodynamic force, the flow can be modified, and subsequently, the melt pool shape can be externally modified.
Proceedings Inclusion? Planned:
Keywords Other, Other, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Environmental gas effect on bubble dynamics in metal additive manufacturing with XFEL-based microscopy
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Evolution of Dislocations during the Rapid Solidification in Additive Manufacturing
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High-Speed Diffraction to Unravel Phase Transformation Pathways and Kinetics in Laser-Melted Fe-Cr-Ni Alloys
High-throughput microstructure evolution via Gleeble thermomechanical simulator
Hybrid CFD–Acoustic Modeling of Acoustic Emissions in Laser Powder Bed Fusion of AlSi10Mg
Imaging External Fields’ Influence on Additive Manufacturing
In-situ characterization of defect formation and elimination dynamics during electron beam melting using high-speed X-ray imaging
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In-situ studies of AMed High Entropy Alloys
In-situ X-ray characterization of electron beam powder bed fusion (PBF-EB)
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In Situ Synchrotron Imaging of Hydrogen Bubble Dynamics in a Recycled Aluminum Alloy during Laser Directed Energy Deposition
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Insights into Additive Manufacturing Processes from Operando Synchrotron X-ray Imaging and Diffraction
Integrating In-Situ Strain Sensing and Neutron Diffraction to Realize Residual Stress–Microstructure Relationships in Laser Powder Bed Fusion
Investigation of solidification behaviour and high-temperature performance of Al-Ce-Fe-Ni-Mn aluminium alloys in additive manufacturing
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Multi-Sensor Process Monitoring for Blue Laser Directed Energy Deposition of Copper
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Neutron Phase and Internal Stresses Characterization in Metal Additive Manufacturing: From 3D Mapping to Real-Time Evolution
Operando Characterization of the Spattering Process in Laser Powder Bed Fusion
Operando Multiscale X-ray Imaging of Defects & Alloying at XFELs in LPBF
Part-Scale Evolution of Microstructural Heterogeneity Quantified at Fine Length-Scale in Solid-State Additive Manufacturing Process
Phase transformation dynamics during laser additive manufacturing of high-entropy alloys via high-speed synchrotron imaging and diffraction
Placeholder - TBD
Powder Particle Impact Behavior in Laser, Powder-blown Directed Energy Deposition
Probing Nanoscale Structural Details in Bulk Systems Using Neutron Grating Interferometry
Probing residual strains in component-scale AM builds using energy dispersive X-ray diffraction for AM Bench 2025
Real-Time Analysis of Phase Transformations in FeCrNiCo-Based High-Entropy Alloys with Varying Aluminum Content Using In-Situ Synchrotron Techniques
Real-Time Detection and Analysis of Spatter-Induced Defects in Laser-Based Powder Bed Fusion Using Optical and Long Wave Infrared Imaging and Machine Learning
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Residual Strain Measurement of AM Parts Using Synchrotron X-Ray Based Diffraction Techniques
Revealing cracking mechanisms and interfacial dynamics in dissimilar alloy additive manufacturing
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Towards high-throughput in-situ SAXS and WAXS measurement of precipitation kinetics – a case study on selective laser melted maraging steels
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Understanding ductility-controlling strain-hardening mechanisms in an additively manufactured Al-7Si-0.3Mg-0.5Cu-1Fe alloy using in-situ synchrotron tensile testing
Uniaxial loading of AM materials at various strain rates during synchrotron based high-speed 3D tomography.
Using synchrotron radiation to understand microstructure and defect formation in additive manufacturing
X-ray Computed Tomography to Inform Near Net Shape-Manufactured Components
X-ray imaging of Blown-powder Directed Energy Deposition with melt pool flow control via magnetic fields
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