| Abstract Scope |
High-performance structural materials are usually heterogeneous and contain a high density of interfaces such as stacking faults, grain boundaries (GBs), phase boundaries (PBs), and many more. When subjected to plastic deformation, the overall performance of these materials is largely dictated by the interaction between the dislocation-mediated plastic flow and those interfaces. In this talk, we will present our recent development of an adaptive concurrent atomistic-continuum simulation tool for predicting the slip-GB reaction and the subsequent structure changes in plastically deformed polycrystalline alloys with its grain size spanning from nanometers to micrometers. Without any slip-GB reaction rules being used as inputs, this simulation tool is shown to be capable to capture an experimentally comparable microstructure evolutions in heterogeneous materials exposed to extreme stresses, corrosive, irradiations, and even a combination of them. |