|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-78: Atomic Diffusion in Melts of Refractory HEAs
||Ankit Roy, Ganesh Balasubramanian
|On-Site Speaker (Planned)
The new class of alloys, High-entropy alloys (HEAs) show promising mechanical properties and have to be synthesized at ~ 3300 K due to high intrinsic melting points (MP) of constituent elements. Though solid state properties of HEAs have been well investigated, the dynamics of molten stage aren’t. Such a study can provide important insights about the chances formation of a single phase solid solution. In this work, we employ molecular dynamics (MD) simulations to study molten stage properties of refractory Mo-Ta-Ti-W-Zr HEA family at various temperatures well above theoretical MP (calculated by rule of mixtures). Self-diffusion coefficients have been obtained by using the velocity auto-correlation function (VACF) and mean-squared displacement (MSD) methods. Good agreement exist between values of self-diffusion coefficients obtained by these methods. Further, a structural pair correlation analysis (g (r)) reveals ordering and clustering tendencies which can answer the critical question- will single phase solid solution be formed?
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume