| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
B-1: A High Throughput CALPHAD Method of Designing Low Density, Compositionally-complex Alloys Toward Understanding Lightweighting Elements' Effects on Passivity |
| Author(s) |
Peter Connors, Sam B. Inman, John Scully |
| On-Site Speaker (Planned) |
Peter Connors |
| Abstract Scope |
The emergence of compositionally-complex alloys (CCAs) as a new frontier of corrosion-resistant alloys has opened doors for advanced optimization of the usage of corrosion-resistant elements. However, researchers must contend with a design space unfathomable in compositional and microstructural possibilities. In this work, a methodology for the rapid (~1 alloy/second) testing of alloy compositions for desired phase stability using the CALPHAD approach is presented. This approach utilizes equilibrium information of a composition at its solidus temperature to maximize the probability of discovering an alloy with a disordered matrix-(or single-)phase microstructure. Additionally, for multi-phase alloy design, this approach engineers the distribution of passivating elements throughout the predicted microstructure and interfacial area between phases of interest. Alloys with constant phase compositions and variable area fractions are evaluated. A system discovered using this technique is explored toward understanding lightweight, passivating elements’ effects on overall passivation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Environmental Effects, Computational Materials Science & Engineering |