About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamental Science of Microstructural Evolution and Phase Transformations: An MPMD/FMD/SMD Symposium in Honor of Peter Voorhees
|
| Presentation Title |
All Molar Gibbs Free Energies Are Chemical Potentials |
| Author(s) |
Long-Qing Chen |
| On-Site Speaker (Planned) |
Long-Qing Chen |
| Abstract Scope |
Chemical potential was first introduced by Gibbs as the “intrinsic potential” of a chemical substance as one of the basic thermodynamic variables of a chemical system, and its differences among different thermodynamic states or in spatial gradient in an inhomogeneous system drive all chemical processes of materials such as phase transformations and microstructure evolution at a given temperature and pressure. Almost all modern literature claim that equilibrium states of a material are obtained by minimizing its molar Gibbs free energy. In this presentation, I will demonstrate that the molar Gibbs free energy of any types of phases at any temperature, pressure or stress, and chemical composition in a system with any number of components is simply a chemical potential. All materials processes evolve to minimum and uniform chemical potential if all chemical species in a system are allowed to spontaneously react or transform and freely redistribute in a heterogeneous system. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Phase Transformations, |