| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Spatially Tailored Materials: Processing-Structure-Properties
|
| Presentation Title |
Production and validation of refractory functionally graded materials using CALPHAD-assisted path planning for property predictions |
| Author(s) |
Jennifer Glerum, Nicholas Ury, Benjamin Ellyson, Michael Juhasz, Brandon Bocklund, Raiyan Seede, Scott Peters, Aurelien Perron, Kaila Bertsch |
| On-Site Speaker (Planned) |
Jennifer Glerum |
| Abstract Scope |
Production of functionally graded materials is of rising interest to design spatially varying bespoke alloys with properties tailored to their environments. In this work, computational path planning algorithms were used in combination with CALPHAD to design pathways in the Ti-Nb-Hf-Ta refractory alloy space with optimized properties along the gradient, then compared to corresponding gradient components fabricated using directed energy deposition (DED) additive manufacturing (AM). The microstructure and local properties as a function of composition, particularly thermal properties such as coefficient of thermal expansion and hot cracking index, were analyzed as a function of local composition along the gradient and compared to computational predictions. Alloys graded in opposite directions (i.e. A -> B vs. B -> A) are also compared to quantify the directional effects of underlying microstructure, thermal cycling, and heat buildup during DED fabrication on the resulting microstructures and properties in as-fabricated material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Computational Materials Science & Engineering, Characterization |