|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||Multiscale mechanical characterization of nanocrystalline and coarse grain refractory HEAs
||Hi Vo, Andrew Alvarado, Koray Iroc, Matheus Tunes, Jonathan G Gigax, Jon Baldwin, Eda Aydogan, Enrique M Saez, Stuart M Maloy, Osman El-Atwani
|On-Site Speaker (Planned)
In the last two decades, the emergence of high entropy alloys (HEAs) has gathered significant interest as it has enabled new pathways to optimize material properties for extreme environments. In particular, refractory HEAs has shown excellent high temperature strength with an absence of ductile-to-brittle transition temperature. In this study, nanocrystalline and coarse grain refractory multi-principle-component systems of four and five elements are designed using CALPHAD and cluster expansion. Multiscale mechanical testing techniques are utilized to investigate the effect of enthalpy and entropy terms on tensile properties. Coupled with atomistic modeling, the experiment work aims to optimize the elemental composition and grain size in order to achieve unique combination of radiation resistance, ductility, and strength in refractory HEAs.