|About this Abstract
||Materials Science & Technology 2012
||Phase Stability, Diffusion, Kinetics and their Applications (PSDK-VII)
||A Phase-Field Model for Elastically Anisotropic Polycrystalline Binary Solid Solutions
||Tae Wook Heo, Saswata Bhattacharyya, Long-Qing Chen
|On-Site Speaker (Planned)
||Tae Wook Heo
In this presentation, a phase-field model for modeling the diffusional processes in an elastically anisotropic polycrystalline binary solid solution will be described. The elastic interactions due to coherency elastic strain are incorporated by solving the mechanical equilibrium equation using an iterative-perturbation scheme taking into account elastic modulus inhomogeneity stemming from different grain orientations. The elastic strain energy of a solid solution will be discussed from the theoretical point of view. We will present the precipitate-interactions among precipitates across a grain boundary and grain boundary segregation-precipitate interactions. We will discuss the effect of the stress field from a coherent precipitate in one grain on the shape of precipitates in other grains and nucleation behavior at the grain boundary.