Title | Migration of inclusions in a matrix due to a spatially varying interface energy |
Publication Type | Journal Article |
Year of Publication | 2022 |
Authors | Zhang Q, Barnett S, Voorhees P |
Journal | Scripta Materialia |
Volume | 206 |
Pagination | 114235 |
ISSN | 1359-6462 |
Keywords | Bulk diffusion, Interface diffusion, Interface energy depends on a field varying with location, Particle migration |
Abstract | An interfacial energy can be a function of a bulk field such as temperature or electric field. We find that in a system with a gradient in temperature or electric potential, the resulting variation in interfacial energy can induce a particle to migrate by either surface or bulk diffusion. For a circular particle under a constant unidirectional gradient in the bulk field, the field dependence of the interfacial energy induces a circular particle to move as a circle at a constant velocity along the direction from higher to lower interfacial energy. A linear stability analysis of this steady state migration suggests that perturbations will damp out as time evolves, and thus under these conditions a migrating circular particle is morphologically stable. Other spatial distributions of interface energy can lead to the distortion of an initially circular shaped particle during migration. A phase field model is developed that captures these distortions and verifies the theoretical results mentioned above. |
URL | https://www.sciencedirect.com/science/article/pii/S1359646221005157 |
DOI | 10.1016/j.scriptamat.2021.114235 |
Migration of inclusions in a matrix due to a spatially varying interface energy
Submitted by nnguyen2 on Thu, 05/12/2022 - 09:16
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