About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Materials Genome, CALPHAD, and a Career over the Span of 20, 50, and 60 Years: An FMD/SMD Symposium in Honor of Zi-Kui Liu
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Presentation Title |
Design of Compositional Pathways for Functionally Graded Materials in Additive Manufacturing |
Author(s) |
Allison M. Beese |
On-Site Speaker (Planned) |
Allison M. Beese |
Abstract Scope |
Additive manufacturing (AM) can be used to fabricate functionally graded materials (FGMs) through the selective deposition of different powder feedstock compositions in directed energy deposition. Ultimately, this could allow for spatially tailored properties within complex geometry components. However, the combination of liquid-phase mixing of multiple alloys and far from equilibrium processing conditions accessed in AM results in the presence of undesired phases that may result in cracking or resulting in failure-prone regions within the FGM. Additionally, current computational approaches are limited in their prediction of phase transformations due to several factors, including the lack of thermodynamic databases validated across the full compositional space for phase prediction. I will describe the collaborative efforts toward developing a computational-experimental framework for understanding and predicting phase transformation during AM of FGMs, which uses newly developed thermodynamic databases to carry out equilibrium and Scheil solidification simulations, which are then refined and validated using experimental findings. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Phase Transformations, Modeling and Simulation |