  A systematic study of the sensitivities of simulation input on the computed
stress distributions in two-phase microstructures is presented. The study
supports a related investigation of the initiation and propagation of yielding
in duplex stainless steel. Considered in the study are the identification of
constitutive model parameters for the single-crystal elastic and plastic
behaviors and the importance of including dominant phase and grain morphologies
in the instantiation of virtual samples. Behaviors computed using a finite
element formulation are evaluated against experimental data for the macroscopic
stress-strain behavior and against lattice strain data measured by neutron
diffraction under in situ loading.
