|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Nanostructured Materials for Nuclear Applications
||Radiation Response of Nanolayered, Nanoporous and Nanotwinned Metals
||Xinghang Zhang, Jin Li, Kaiyuan Yu, Youxing Chen, Mark A Kirk, Cheng Sun, Meimei Li, Haiyan Wang
|On-Site Speaker (Planned)
Design of radiation tolerant materials for application in extreme radiation environment is a significant scientific challenge. Numerous types of defect sinks have been applied to mitigate radiation damage. In this presentation, we will review some of our recent studies on radiation tolerance of nanolayered, nanoporous and nanotwinned metals. We provide direct evidence, via in situ Kr ion irradiation in a transmission electron microscope, that immiscible layer interfaces in multilayers can effectively absorb radiation induced dislocation loops, and thus significantly reduce the density and size of defect clusters. Similarly in situ radiation also revealed drastic different response of nanotwinned metal and nanoporous metal to Kr ion irradiation damage compared to their bulk counterparts. Defect migration kinetics (diffusivity of defect clusters) was determined in coarse grained and nanostructured metals. These studies provide an important forward step towards understanding of defect-sinks enabled enhancement of radiation tolerance in nanostructured metallic materials.
||Planned: A print-only volume