|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Separation of Static and Dynamic Displacements in CrMnFeCoNi
||Lewis Owen, Helen Playford, Howard Stone, Nicholas Jones
|On-Site Speaker (Planned)
The strength of HEAs is often attributed to a high level of local-lattice distortion resulting from multiple atomic species of differing atomic radii. However, there are very few direct assessments of these local strains in the literature. Here, neutron total scattering data and analysis of pair distribution functions (PDFs) was used to assess the level of local lattice strain in a CrMnFeCoNi HEA and related compositionally simpler systems. Previous results, at ambient conditions, provided a relative measure of the static displacements but could not separate these from the dynamic displacements associated with thermal motion. By comparing PDFs at several cryogenic temperatures, it is possible to separate out these contributions and provide an estimate of the actual local lattice strain present within the material.
||Planned: Supplemental Proceedings volume