| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Structures and Modeling
|
| Presentation Title |
Heavy Ion Irradiation Response of AlxFeCrNiMn High Entropy Alloys |
| Author(s) |
Nan Li, Di Chen, Youxing Chen, Jordan Weaver, Yongqiang Wang, Saryu Fensin, Stuart Maloy, Amit Misra |
| On-Site Speaker (Planned) |
Nan Li |
| Abstract Scope |
In recent years, high entropy alloys (HEAs), composed of four or more metallic elements mixed in equal or near equal atomic percent, have attracted significant attention due to their excellent mechanical properties and good radiation resistance. They show significant promise as candidates for high temperature fission and fusion structural applications. Here, 5 MeV Fe2+ ion irradiation at 500 °C to a peak fluence of 50 and 100 displacement per atom (dpa) has been performed on single phase CrFeMnNi and dual-phase AlCrFeMnNi HEAs. Transmission electron microscopy with energy dispersive x-ray spectrometry was applied to characterize the radiation defects and microstructural changes. At the same irradiation condition, AlCrFeMnNi presented a higher density of voids but marginal radiation-induced hardening, in comparison to the single-phase CrFeMnNi. It is found in AlCrFeMnNi, chemical intermixing at the coherent FeCrMn matrix/AlNi precipitate interface is only observed when the radiation fluence reaches >or= 100 dpa. |
| Proceedings Inclusion? |
Planned: TMS Journal: Metallurgical and Materials Transactions |
| Keywords |
High-Entropy Alloys, Nuclear Materials, |