About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Thermodynamics and Kinetics of Alloys
|
Presentation Title |
High-throughput Design of Multi-principal Element Alloys with Spinodal Decomposition Assisted Microstructures |
Author(s) |
Shalini Roy Koneru, Kamalnath Kadirvel, Yunzhi Wang |
On-Site Speaker (Planned) |
Shalini Roy Koneru |
Abstract Scope |
Researchers recently observed that spinodal decomposition assisted phase transformation pathways in multi-principal element alloys (MPEAs) could generate nanoscale periodic multiphase microstructures with promising mechanical and functional properties. Thus, we recently developed a CALPHAD framework based on existing theoretical analysis of spinodal decomposition in multicomponent systems to predict the stability of solid solutions in MPEAs against spinodal decomposition. Here, we extend this framework to explore the compositional and temperature spaces and design MPEAs with novel microstructures. We illustrate our methodology through high throughput CALPHAD calculations in Fe-Co-Ni-Mn-Cu system. We present the spinodal temperature as a function of alloy composition through Morral’s constant core component diagrams and the MPEAs of interest are selected based on phase equilibrium calculations. We further calculate the initial concentration modulations (CMs) during the early stages of spinodal decomposition for selected MPEAs as their difference from the equilibrium phase compositions could be further utilized in engineering the microstructures. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Phase Transformations, Modeling and Simulation |