About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Liquid Metal Dealloying: Formation and Coarsening |
Author(s) |
Pierre-Antoine Geslin, Takeshi Wada, Hidemi Kato |
On-Site Speaker (Planned) |
Pierre-Antoine Geslin |
Abstract Scope |
Liquid metal dealloying has emerged as a promising technique to elaborate finely porous structures of various nature. This work focus on the formation and coarsening mechanisms of microstructures obtained through the liquid metal dealloying technique. First, a phase-field model is carefully parameterized to reproduce the thermodynamics properties of Cu-Ni system dealloyed in liquid Ag. This system is chosen for simplicity reasons and the simulation results are carefully compared to experimental observations. In particular, the diffusion-limited kinetics and the progressive dissolution of Cu from the ligaments into the melt are quantitatively compared between experiments and simulations. Second, we investigate the coarsening of connected microstructures with a phase-field model incorporating surface diffusion. We show that, for different volume fractions, the topological evolution of the microstructure follows the growth of the ligament size such that the connected microstructure evolve in a self-similar way. |
Proceedings Inclusion? |
Undecided |
Keywords |
Modeling and Simulation, Other, Other |