|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Phase-field Simulations of Microstructure Evolution under Elastic-plastic Deformation in Nanostructured Materials
||Shenyang Hu, Yulan Li, Suveen Mathaudhu
|On-Site Speaker (Planned)
The Phase-field approach has been successfully used to predict microstructure evolutions in many important materials processes. The deformation energy due to lattice mismatch between different phases and applied stresses is a significant driving force for microstructural evolution. In order to capture the non-uniform deformation response of polycrystalline metals based on their largest controlling microstructural feature, crystal plasticity formulations are developed that take into account the crystal orientation and dislocation slip systems of each grain. In this lecture, we present an efficient iteration method to find the elastic-plastic solution in polycrystalline materials, and a phase-field model integrating crystal plasticity and microstructure evolution. The developed model has been used to study 1) the effect of microstructures in bimodal crystals and dual phase polycrystals on elastic-plastic deformation and 2) the effect of elastic-plastic deformation on recrystallization in nano-polycrystals. Its potential application in optimizing material fabrication processes and predicting material performance will be discussed.