About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Advanced Characterization With Synchrotron, Neutron, and In Situ Laboratory-scale Techniques IV
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| Presentation Title |
Operando Characterization of the Spattering Process in Laser Powder Bed Fusion |
| Author(s) |
Kyle Mumm, Justin Miner, Sneha Prabha Narra, Anthony Rollett, Tao Sun |
| On-Site Speaker (Planned) |
Kyle Mumm |
| Abstract Scope |
Despite the utility of Laser Powder Bed Fusion for the manufacturing of complex metal components, its application has been limited by the non-deterministic formation of structural defects. Spattered particles are a leading cause of these defects, shielding the powder bed from the laser and causing disruptions to stable melting processes. To enable accurate predictions of spatter-related defects, this work examines spattering behavior from a melt track-scale perspective using bulk-scale conditions. High-speed operando synchrotron x-ray imaging and near-infrared imaging offer clear visibility of spatter particles, vapor plumes, laser-spatter interactions, melt pool behavior, and defect formation mechanisms. Using these techniques, we quantify spattering rates, spatter types, and laser incidence events across the processing window for Ti-6Al-4V. Impacts of key process variables, such as energy density, hatch spacing and pattern, and gas flow on the spattering behavior will be quantitatively evaluated and discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, |