| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Oxidation of NiCoCr Alloys in High Temperature Air and Steam Environments |
| Author(s) |
William D. Musinski, Elmer Prenzlow, Benjamin Church, Timothy Smith, Christopher Kantzos |
| On-Site Speaker (Planned) |
William D. Musinski |
| Abstract Scope |
To advance design tools for oxidation-resistant multi-principal component alloys, we present a combined experimental and modeling approach for characterizing the oxidation kinetics in two additively manufactured (AM) NiCoCr alloys. A baseline AM NiCoCr alloy and an oxide-dispersion-strengthened (ODS) AM NiCoCr alloy were subjected to laboratory air and air/steam environments at temperatures ranging from 800degC to 1200degC. Continuous thermogravimetric analysis measured the mass gain versus time for all permutations of test conditions. Exposed samples were subsequently examined via scanning electron microscopy to measure the oxide penetration as a function of time. Marked differences in oxidation results were noted between the baseline and ODS NiCoCr alloys. The characterization results were used to calibrate an analytical/phase field model capable of predicting oxide penetration over time. The proposed temperature-, environmental-, and microstructure-dependent model can be used to assist in materials design of multi-principal component alloys that are exposed to aggressive environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, High-Entropy Alloys |