| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Discovery of Oxidation-Resistant Refractory Complex, Concentrated Alloys Through High-Throughput Calculations and Experiments |
| Author(s) |
Akhil Bejjipurapu, Sharmila Karumuri, Saswat Mishra, Joseph C Flanagan, Ilias Bilionis, Alejandro Strachan, Kenneth H. Sandhage, Michael Titus |
| On-Site Speaker (Planned) |
Akhil Bejjipurapu |
| Abstract Scope |
Refractory Complex, Concentrated Alloys (RCCAs) can be promising alternatives to Nickel-based superalloys for high-temperature applications. However, achieving satisfactory high-temperature oxidation and environmental resistance with RCCAs remains a challenge. This research aims to identify RCCA compositions capable of forming external protective scales (e.g., Al2O3, Cr2O3) for enhanced oxidation resistance. The vast design space, encompassing nine refractory elements and aluminum, complicates efficient exploration. To address this challenge, the combined use of a Gaussian Process Regression active learning model with high fidelity and high-throughput-low-fidelity experiments is being developed to accelerate the search for oxidation-resistant RCCAs. This approach utilizes a combination of composition-based descriptors, atomistic descriptors related to oxide layering, and descriptors based on oxide properties. By leveraging this combination of active learning with experiments, predictions of RCCA mass gain behavior will be made, aiding in the efficient identification of promising oxidation-resistant candidates. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, ICME |