| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Role of Surface Deformation on the High-Temperature Oxidation Response of FeNiCr-based HEAs |
| Author(s) |
Kate Moo, Daniele Fatto Offidani, Emmanuelle Marquis |
| On-Site Speaker (Planned) |
Kate Moo |
| Abstract Scope |
High-entropy alloys (HEAs) have gained interest in recent years due to their unique properties. However, the high-temperature oxidation behavior of HEAs remains not well understood, albeit its industrial relevance. Surface deformation has been found to impact the oxidation kinetics and oxide growth mechanisms in conventional alloys, but these effects pertaining to HEAs are notably absent in the literature. This study aims to shed light on the impact of surface deformation on the high-T oxidation behavior of two equimolar quinary HEAs, along with the main drivers behind the formation of the oxide(s). Samples of ground and alumina-polished equimolar FeNiCrCoMn and FeNiCrCoAl were oxidized at temperatures ranging from 500-800C. Differences in oxide thickness, composition, and structure, along with bulk microstructural properties, will be discussed, shedding light on the evolution of the oxide with time and its underlying kinetic contributors from the bulk metal and grain boundaries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Environmental Effects, Characterization |