Simulation of Grain Growth Under the Effect of Stress

Abstract

During anisotropic curvature driven grain growth, high-energy grain boundaries are preferentially eliminated, thus leading to interface texture development and a higher population of low energy grain boundaries. However, when stress is introduced as an additional driving force, the dynamics of grain growth change. To model these effects, a three dimensional anisotropic multi- level set model was modified in order to account for the effect of stress field on grain growth. For this mesoscale study, grain boundaries were treated as dislocation structures and their associated net Burgers vectors were calculated using the misorientation information and boundary inclinations. Using these net Burgers vectors and their associated densities, additional forces due to stress field were calculated via the Peach-Koehler equation. Qualitative comparisons of 5 parameter grain boundary character distribution will be carried out in order to analyze the differences in texture evolution during grain growth.

Publication
In Materials Science Forum.
Date
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