Simulation of anisotropic grain growth by Ostwald ripening
- Sandia National Labs., Albuquerque, NM (United States)
- Case Western Reserve Univ., Cleveland, OH (United States)
In this paper, a two-dimensional Potts model that can simulate anisotropic grain growth by Ostwald ripening in liquid-phase-sintered ceramics will be presented. The model defines a Wulff shape for the grains and allows each individual grain to grow in its local environment which is controlled by the solid/liquid interfacial energy, the spatial distribution of neighboring grains, area fraction of grains, wetting by and distribution of the liquid matrix, and the concentration gradients in the liquid. The results of this simulation technique will be presented with emphasis on the kinetics and grain shape evolution and will be compared to those of isotropic grain growth. Finally, the limitations of the Potts model in such microstructural evolution processes will be discussed.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 266752
- Report Number(s):
- SAND--96-1149C; CONF-9606237--1; ON: DE96011997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Application of the Potts model to simulation of Ostwald ripening
Numerical simulation of grain growth in liquid phase sintered materials. 2: Study of isotropic grain growth