| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Microstructural Evolution of the CoCrFeNiMo0.2 High Entropy Alloy Under Different Annealing Conditions |
| Author(s) |
Fabio da Costa Garcia Filho, Sergio Monteiro |
| On-Site Speaker (Planned) |
Fabio da Costa Garcia Filho |
| Abstract Scope |
High-entropy alloys have been considered a hot topic since their first report in the beginning of the 21st century. Their microstructural stability and mechanical properties were showed to be remarkable even at cryogenic temperatures. Herein, we investigate the effect of different annealing treatments in the microstructure and hardness of a CoCrFeNiMo0.2 high entropy alloy. The alloy was subjected to annealing temperatures ranging from 600 – 900 ˚C for 12h followed by water quenching. The as-cast alloy exhibits single fcc phase structure, however, under certain annealing conditions it was possible to verify the precipitation of hard intermetallic phases in both grains and at the grain boundaries simultaneously. Resulting in the strengthening of the HEA which was verified by the increase of Vickers microhardness. Morphological aspect of such precipitates was assessed by SEM and EDS. Furthermore, lattice distortion has been by line broadening from X-ray diffraction (XRD). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, Phase Transformations |