About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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In-Situ Monitoring and Control of Solidification & Deformation Processes in Metal Additive Manufacturing
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| Presentation Title |
High-Throughput In-Situ Ultrasonic Monitoring of Melt Pool Dynamics and Phase Transformations in Laser Additive Manufacturing |
| Author(s) |
Nathan J. Kizer, Jordan S. Lum, Rosa E. Morales, David M. Stobbe, Christopher M. Kube |
| On-Site Speaker (Planned) |
Nathan J. Kizer |
| Abstract Scope |
In-situ characterization of phase transformations during laser-based additive manufacturing (AM) is potentially transformative for understanding and controlling material properties. While traditional in-situ phase monitoring relies on multi-billion-dollar specialized synchrotron X-ray facilities with limited accessibility, a high-throughput ultrasonic characterization system has been developed as a low-cost, accessible alternative to monitor solid-to-solid phase transformations and solidification behavior in powder bed fusion. Ti5553, AlSi10Mg, Fe-Cr-Ni, and SS304L-Ni20Cr were systematically investigated to demonstrate the system's capability across different solidification mechanisms and phase transformation pathways. Single-spot and single-track melt pools were generated with varying laser power and scanning speed parameters to establish correlations between processing conditions, melt pool characteristics, and solidification behavior through ultrasonic measurements. This ultrasonic monitoring approach enables tracking of critical solidification parameters and phase evolution with the spatial and temporal resolution necessary for detailed microstructural analysis, establishing ultrasonic characterization as a robust tool for understanding process-structure relationships in AM processes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Phase Transformations, Solidification |