Orientational anisotropy and interfacial transport in polycrystals

摘要: Abstract Interfacial diffusion is governed to a large degree by geometric parameters that are determined crystallographic orientation. In this study, we assess the impact of orientational anisotropy on mass transport at internal interfaces, focusing role preferred orientation (i.e., texture) in polycrystal. More specifically, perform both numerical and analytical studies steady-state for polycrystals having various grain-orientation distributions. By relating grain misorientation grain-boundary energies and, via Borisov relation, diffusivity, link microstructure variability kinetics. Our aim correlate shape features distribution, such as location shapes peaks, with calculated effective diffusivity. Finally, discuss constraints, those associated junctions, determining diffusivity