| Abstract Scope |
This project aims to design a new single-phase FCC High Entropy Alloy (HEA) with a high specific modulus using a combined computational and experimental approach. The goal is to develop a lightweight engineering material that achieves ductility through an FCC structure and high stiffness and low density using the compositional freedom of HEAs. Firstly, computational modelling methods are used to efficiently explore the vast compositional space and identify promising candidates. After promising compositions are found through modelling studies, these alloys are manufactured experimentally, and the modelling results are verified by characterization studies. In this direction, CASTEP, an atomistic modelling based on density functional theory, is used in assessing lowest energy phases and their elastic properties. In addition, phase estimation is supported using Thermo-Calc (CALPHAD). Experimentally, Vacuum Arc Melting is used for sample manufacturing. SEM, EDX and XRD are used to characterise the structure, and mechanical properties are evaluated by nanoindentation. |