| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
Combining Elemental and Microstructure Heterogeneities in High-entropy Alloys to Enhance Radiation Resistance |
| Author(s) |
Yanwen Zhang, Miguel L. Crespillo, Walker L. Boldman, Philip D. Rack, Hongbin Bei, Yongqin Chang, Li Jiang, Lumin Wang, William J. Weber |
| On-Site Speaker (Planned) |
Yanwen Zhang |
| Abstract Scope |
Understanding critical roles of elemental and microstructure heterogeneities in high-entropy alloys (HEAs), as well as their response to radiation may lead to transformative opportunities in material research. In HEAs, the random arrangement of multiple elemental species creates solid-solution heterogeneities that lead to unique non-periodic electronic structure and energy landscapes. Such chemical complexity resulting from the elemental heterogeneities allow us to tailor defect production and damage evolution in radiation environments. Recent research beyond properties that are intrinsic to HEAs will be discussed, including alloying low concentration of solute elements in the crystal form, high-density grain boundaries and interfaces in the nanocrystalline form, and oxide dispersion strengthened HEAs. The approach by combining chemical complexity with structural complexity is shown to have distinctive improvements in modifying defect dynamics, suppressing extended defect growth, and thus achieving substantially improved radiation resistance.This work was supported by EDDE EFRC, funded by the US DOE/BES. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, |