Multiscale modeling of polycrystalline nickel-based superalloys accounting for subgrain microstructures

- Hierarchical crystal plasticity constitutive model for Ni-based superalloys.
- Three scales: sub-grain scale γ-γ′ microstructure, grain-scale, scale of polycrystalline RVE.
- Homogenized activation energy-based crystal plasticity FEM model.
- Sub-grain dislocation density-based non-Schmid crystal plasticity model.
- Good agreement with experimental observations.