| About this Abstract |
| Meeting |
3rd World Congress on High Entropy Alloys (HEA 2023)
|
| Symposium
|
HEA 2023
|
| Presentation Title |
Rapid Solidification Behavior of Refractory Multi-principal Element Alloys |
| Author(s) |
Megan D. Le Corre, Kaitlyn Mullin, Ruben Ochoa, Adriana Eres Castellanos, Tresa Pollock, Amy Clarke |
| On-Site Speaker (Planned) |
Megan D. Le Corre |
| Abstract Scope |
Additive manufacturing (AM) of high temperature refractory alloys and new refractory multi-principal element alloys (RMPEAs) promises to circumvent potential fabrication challenges associated with traditional manufacturing processes like thermomechanical processing. While recent studies of RMPEAs by AM have revealed promising results, much work remains to evaluate the foundational solidification behavior associated with and responsible for the resulting microstructures and properties. Thermal gradients and solidification velocities produced by laser processing parameters in single track melts of refractory alloys were determined using heat transfer modeling and computational fluid dynamics software. These characteristics are then correlated to predicted microstructural morphologies using the Ivantsov Marginal Stability model, the Hunt modification to the Gaümann columnar to equiaxed transition model, and the Scheil-Gulliver model. Agreement or discrepancy between microstructural predictions and experimentally observed microstructures can be used to calibrate solidification models, thereby enabling tailored microstructures and properties in these alloys. |
| Proceedings Inclusion? |
Planned: Metallurgical and Materials Transactions |