About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Materials
|
| Presentation Title |
The Role of Surface Texture on the Oxidation Behavior of Additively Manufactured Chromia-forming Alloys |
| Author(s) |
Reza Roumina, George Vukovic, Emmanuelle A. Marquis |
| On-Site Speaker (Planned) |
Reza Roumina |
| Abstract Scope |
Most oxidation studies tend to ignore the existence and potential impact of alloy texture on the alloys’ oxidation response; however, surface texture can be significantly influenced by materials fabrication routes and affect oxidation behavior. This study quantified the effects of surface texture on the oxidation behavior of additively manufactured chromia-forming nickel-based alloys at 900°C in laboratory air. The initial crystallographic orientations of the surface were characterized by electron backscatter diffraction (EBSD). The evolution of oxide thickness was measured as a function of crystallographic orientation using atomic force microscopy. A strong correlation between the oxidation rate and crystallographic orientation was confirmed as (101)>(001)>(111). The evolution of this dependence varied with alloy chemistry. The underlying mechanisms for the impact of the initial substrate texture over the entire time frame of oxidation were explored. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, Characterization |