About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Performance of AM NiCoCr-based Alloys: Cyclic Oxidation in Air and Air-Steam Environments |
| Author(s) |
Elmer A. Prenzlow, William Musinski, Mariah Senfleben, Benjamin Church, Timothy Smith, Christopher Kantzos |
| On-Site Speaker (Planned) |
Elmer A. Prenzlow |
| Abstract Scope |
The influence of air and steam on the oxidation performance of additively manufactured (AM) NiCoCr alloys were investigated. An AM equimolar NiCoCr alloy and GRX-810, along with oxide-dispersion-strengthened (ODS) variants of each material, were subjected to 100-hour cyclic oxidation tests in laboratory air and air 30vol% steam environments at temperatures ranging from 900°C to 1100°C. The ODS variants of both AM alloys showed distinct mass-change performance relative to the non-ODS versions when comparing air and air/steam atmospheres with mass-loss as a function of time in air/steam. Both GRX-810 alloys showed improvements in oxidation resistance compared to their NiCoCr counterparts. Oxide layer constituents and near-surface microstructural damage were characterized via x-ray diffraction, optical microscopy, and SEM/EDS. Comparison between these alloys showed that the alloying modifications to GRX-810, which target mechanical property improvements, provide oxidation benefits compared to the equimolar NiCoCr materials in both air and air-steam in the temperature region examined. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Additive Manufacturing, Other |