|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||An In-situ TEM Observation on the Stability of High Entropy Alloys Under High Temperature Oxidation Environments
||Elaf A. Anber, Wayne Harlow, Jean-Philippe Couzinie, Mitra Taheri
|On-Site Speaker (Planned)
||Elaf A. Anber
Recently, new developments of in-situ transmission-electron-microscopy (TEM) have led to new insights into the thermal stability mechanisms of a wider range of metals and alloys. Within this context, we propose to describe some recent results on the stability of two HEA families including refractory-based compositions and 3d transition alloys, under high temperature and oxidation environments with the use of in-situ TEM experiments. Microstructure characterizations at different annealing temperatures and oxygen partial pressures are observed and coupled with phase and orientation analysis using precession electron diffraction techniques. Overall, this work provides a foundation for understanding the stability window for candidate HEAs in extreme environments. Therefore, these results are discussed in the context of the growing literature comparing the ideal methods for stabilizing mechanisms in HEAs for use in high temperature, corrosive environments.