  The precise mechanisms underlying the failure of multi-phase materials may be
strongly dependent on the material's microstructural morphology.
Micromechanical modeling has provided much insight into this dependence, but
uncertainties remain about crucial modeling assumptions. This paper assesses
the influence of different grain shapes, damage indicators, and stress states
using a structured numerical model. A distinct spatial arrangement of phases
around fracture incidents is found, consisting of hard regions in the tensile
direction interrupted by soft regions in the directions of shear. These key
features are only mildly sensitive to the studied variations.
