|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Atomic-level Disorder and Defect Dynamics in Concentrated Solid-solution Alloys
||Yanwen Zhang, Shijun Zhao , Fredric Granberg, Kai Nordlund, Flyura Djurabekova, William J. Weber
|On-Site Speaker (Planned)
Performance enhancement of structural materials in extreme environments has been actively investigated for many decades. Recently developed single-phase concentrated solid solution alloys (CSAs) exhibit significant chemical disorders and unique site-to-site lattice distortions. While it has long been recognized that specific compositions of traditional alloys have enhanced radiation resistance, it remains unclear how the atomic-level alloying affects defect formation, damage accumulation, and microstructural evolution. Such knowledge gaps have been a roadblock to future-generation energy technology. CSAs with a simple crystal structure, but complex chemical disorder are ideal systems to understand how compositional complexity influences defect dynamics, and to fill the knowledge gaps with focus on electronic- and atomic-level interactions, mass and energy transfer processes, and radiation resistance performance. Recent advances of defect dynamics and irradiation performance in CSAs are reviewed, and intrinsic chemical effects on radiation performance are discussed. This work was supported by the Energy Dissipation to Defect Evolution Center (EDDE), an Energy Frontier Research Center funded by the U.S. DOE, BES, MSED.
||Planned: Supplemental Proceedings volume