|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors VII
||Radiation Tolerance of Equiatomic Multicomponent Single Phase Alloys Subjected to Ion Irradiation at 16 K
||Gihan Velisa, Elke Wendler, Ke Jin, Hongbin Bei, William John Weber, Yanwen Zhang
|On-Site Speaker (Planned)
Single-phase concentrated solid-solution alloys (SP-CSAs) have attracted extensive investigations of their irradiation effects at room temperature (RT) or high temperatures (HT) owing to their potential use in harsh environments. Previous investigations have showed a suppressed damage accumulation with increasing chemical disorder. The strong radiation resistance in SP-CSAs is attributed to dynamic annealing of point defects at early stages during irradiations at RT and HT. In order to check if this enhanced defect recombination is not thermally activated, defect evolution in Ar-irradiated Ni, NiFe, and NiFeCoCr is studied at 16 K using in situ ion channeling measurements. Ion channeling results show a substantial reduction of damage accumulation in the alloys, compared to Ni. The enhanced defect recombination observed even at 16 K suggests that the "self-healing" is not a thermally activated process.
||Planned: Supplemental Proceedings volume