About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Real Time Imaging
|
Presentation Title |
Computational Real Time Imaging and Understanding of Microstructure Evolution |
Author(s) |
Bo Wang, Xiaoxing Cheng, Tiannan Yang, Fei Li, Long-Qing Chen |
On-Site Speaker (Planned) |
Long-Qing Chen |
Abstract Scope |
Phase-field method is a powerful tool for computationally generating real-time images and understanding their evolution mechanisms. Here we present two examples to illustrate how the temporal microstructure images obtained from phase-field simulations can be used to understand experimental observations and guide experiments to achieve enhanced properties. The first example involves the phase-field simulations of real time ferroelectric domain evolution during the alternative current (AC) switching process of a ferroelectric crystal. The temporal image evolution revealed an unexpected positive correlation between an increase in ferroelectric domain size and enhancement in piezoelectric properties of relaxor-based ferroelectric single crystals. The second example is used to demonstrate how the ferroelectric polarization images generated using a dynamic phase-field model under GHz frequency AC field can be employed to understand the different electric conduction behaviors of domains and domain walls. |
Proceedings Inclusion? |
Planned: |