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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 Probing Nanoscale Structural Details in Bulk Systems Using Neutron Grating Interferometry
Author(s) Yuxuan Zhang, James Torres, Roger Hobbs, Hassina Bilheux, Erik Stringfellow
On-Site Speaker (Planned) Yuxuan Zhang
Abstract Scope Neutron’s high penetration through metals and high sensitivity to light elements (H, Li, etc.) has enabled neutron imaging as a unique non-destructive tool. It can provide spatial resolution of 20-100 μm when investigating internal structures of a real-life component (bulk system with dimensions on the order of centimeter). Recently, neutron grating interferometry (nGI) has been implemented at the Multimodal Advanced Radiography Station (MARS) at Oak Ridge National Laboratory (ORNL). Such technique enables the utilization of ultra-small angle neutron scattering (USANS) signal as contrast. Therefore, the existence of cracks, voids, and porosity in a much smaller length scale (tens to hundreds of nanometers) than a detector’s direct spatial resolution can be instead resolved indirectly in bulk systems, simultaneously with conventional attenuation contrast. This work will present recently developed neutron grating interferometry capabilities at ORNL, along with demonstration work done on additively manufactured (AM) samples.
Proceedings Inclusion? Planned:
Keywords Characterization, Additive Manufacturing, Solidification

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CW Laser-SEM: A novel continuous-wave laser and SEM coupling
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Effect of Scanning Strategies on Residual Stress Mitigation in Laser Powder Bed Fusion
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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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Heating Rate Dependent Microstructural Evolution of Laser Powder Bed Fusion Additively Manufactured Ti-6Al-4V
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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
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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
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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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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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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
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Placeholder - TBD
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Revealing cracking mechanisms and interfacial dynamics in dissimilar alloy additive manufacturing
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