| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Structures and Modeling
|
| Presentation Title |
Examination of the Bulk Metal-oxide Layer Interface of a Cr-Nb-Ta-V-W High Entropy Alloy at 700 and 800oC |
| Author(s) |
Rebecca Alexandra Romero, S.K. Varma, Nanthakishore Makeswaran, Ravisankar Naraparaju, C.V. Ramana |
| On-Site Speaker (Planned) |
Rebecca Alexandra Romero |
| Abstract Scope |
The bulk metal-oxide layer interface of a Cr-Nb-Ta-V-W high entropy alloy was exposed to temperatures of 700 and 800oC in air and examined in the oxidized state. An untreated sample was also subjected to high temperature x-ray diffraction measurements to determine oxide patterns up to 800oC. Five different phases which were previously identified in this alloy was confirmed. The microstructure near the interface was studied for an indication of selective oxidation of this alloy. Oxidized samples at 700 and 800oC were studied to evaluate the differences in oxide composition and morphology at interface and surface layer. SEM was employed to evaluate the physical structure of the interface and oxide surface layer, while EDS and x-ray color mapping was utilized to characterize the elemental composition of the bulk metal and oxide layers. |
| Proceedings Inclusion? |
Planned: TMS Journal: Metallurgical and Materials Transactions |
| Keywords |
High-Entropy Alloys, Characterization, High-Temperature Materials |