| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advancing Current and State-of-the-Art Application of Ni- and Co-based Superalloys
|
| Presentation Title |
A Comparative Study of the Effects of Surface Treatments and Finishes on the High Temperature Oxidation Behavior of Alloy 800 in a 400 °C Steam Environment |
| Author(s) |
Richard Chiang, Sebastien Teysseyre, Jeffery Aguiar, Geogy Abraham, Vivekanand Kain, Vijay K. Vasudevan |
| On-Site Speaker (Planned) |
Richard Chiang |
| Abstract Scope |
This study investigates the effect of various surface finishes/treatments (as-received, machined, ground, buffed, electropolished, pickled and passivated, and shot peened) on the oxidation behavior of Alloy800 exposed to 400°C high temperature steam for 336hrs. Characterization of the resulting film layer were conducted using SEM, S/TEM, and Raman spectroscopy. The results indicated that the more deformation-inducing processes (shot peened and machined) produced a more protective film layer while the baseline as-received and processes like electropolishing were observed to have signs of degradation. The specifics of each processes’ effect on the oxidation as a result of alterations to relevant parameters were discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |