|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Radiation Response in Single-phase Concentrated Solid Solution Alloys
||Chenyang Lu, Taini Yang, Lumin Wang, Yanwen Zhang, Fei Gao, Ke Jin, Hongbin Bei, William J Weber
|On-Site Speaker (Planned)
Single-phase concentrated solid solution alloys (SP-CSAs), including high entropy alloys (HEAs) are a novel family of materials for studying defect dynamics without preexisting defect sinks. In contrast to conventional alloys, SP-CSAs are composed of two to five principal elements in equal or near-equal molar ratios that form random solid solutions in either a simple face-centered cubic (fcc) or simple body-centered cubic (bcc) crystal lattice structure. In theory, the high-level site-to-site lattice distortions and compositional complexities in SP-CSAs can effectively reduce the mean free path of electrons, phonons and magnons; these distortions and complexities can also be employed to modify formation energies, migration barriers, and diffusion pathways of irradiation-induced defects, thereby modifying defect generation, interaction, interstitial-vacancy recombination in the early stages of irradiation. This talk demonstrates the enhancement of radiation tolerance in SP-CSAs, and more importantly, reveals its controlling mechanism through a detailed analysis of microstructure characterizations and atomistic computer simulations.
||Planned: Supplemental Proceedings volume