| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Cyclic Oxidation of NiCoCr Alloys in Air and Air-Steam Environments |
| Author(s) |
Elmer Prenzlow, Benjamin C. Church, William Musinski, Timothy Smith, Christopher Kantzos |
| On-Site Speaker (Planned) |
Elmer Prenzlow |
| Abstract Scope |
The influence of steam on the oxidation performance of additively manufactured (AM) NiCoCr alloys were investigated. An AM NiCoCr alloy, an oxide-dispersion-strengthened (ODS) AM NiCoCr alloy, and Inconel 625 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 at atmospheric pressure. The ODS NiCoCr alloy showed distinct mass-change performance relative to the non-ODS version when comparing air and air/steam atmospheres with gradual mass-loss as a function of time in air/steam. Oxide layer constituents and near-surface microstructural damage were characterized via x-ray diffraction, optical microscopy, and scanning electron microscopy. Differences in oxide scale phase constituents were noted and related to the performance differences in air or air/steam environments. Comparison with Inconel 625 showed that NiCoCr materials have promise in both air and air-steam environments in the temperature region examined. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Additive Manufacturing, High-Temperature Materials |