About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In-Situ Monitoring and Control of Solidification & Deformation Processes in Metal Additive Manufacturing
|
| Presentation Title |
Understanding Microstructure Evolution During Processing in Additively Manufactured Functionally Graded Materials |
| Author(s) |
Kaila Morgen Bertsch, Brandon Bocklund, Brenjamin Ellyson, Jennifer Glerum, Michael Juhasz, Nicholas Ury, Aurelien Perron |
| On-Site Speaker (Planned) |
Kaila Morgen Bertsch |
| Abstract Scope |
Additive manufacturing (AM) of functionally graded materials (FGMs) enables novel design and joining capabilities. However, predicting the microstructures and properties is challenging due to complex thermal histories, especially as material properties change spatially. To address this, we systematically investigated the microstructural evolution in AM FGMs from titanium to tantalum. Multiple instances of the same component were produced, each terminating at a different intermediate layer, then cross-sectioned perpendicular to the “terminal” melt pool in each sample to capture slices of microstructure development across build stages. Characterization using SEM, EDS, EPMA, and EBSD enabled tracking of phase formation, interdiffusion, and grain structure changes throughout the build. In situ thermal histories were recorded via thermocouples on the build plate and compared to analytical simulations, showing the importance of utilizing temperature-dependent property models to track phenomena. These insights provide a foundation for optimizing AM processes for FGMs to achieve precise compositional and geometric control. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Solidification, Phase Transformations |