| Abstract Scope |
Entropy is a key concept in thermodynamics, and entropy production of an internal process is foundational to kinetics, including plastic deformation. Therefore, the accurate prediction of entropy is necessary for stability and evolution of a system. Over the last two decades, we developed a multiscale entropy approach (recently termed as zentropy theory) that integrates DFT-based quantum mechanics and Gibbs statistical mechanics and has demonstrated its capability to accurately predict entropy and Helmholtz energy (https://doi.org/10.1007/s11669-022-00942-z, https://doi.org/10.1002/mgea.15, https://doi.org/10.20517/microstructures.2023.56). In this presentation, its potential application to plasticity is discussed based on a recent publication by McDowell and the present author (https://doi.org/10.1016/j.ijplas.2025.104303). Furthermore, this work proposes that the plateau on the stress-strain curve can be interpreted in terms of Gibbs phase rule and analogous to spinodal decomposition in binary systems. |