  Voids can limit the life of engineering components. This motivates us to
understand local plasticity around voids in a nickel base superalloy combining
experiments and simulations. Single crystal samples were deformed in tension
with in-situ high angular resolution electron back scatter diffraction to probe
the heterogeneous local stress field under load; the reference stress is
informed by crystal plasticity finite element simulations. This information is
used to understand the activation of plastic deformation around the void. Our
investigation indicates that while the resolved shear stress would indicate
slip activity on multiple slip systems, slip is reduced to specific systems due
to image forces and forest hardening. This study rationalizes the observed
development of plastic deformation around the void, aiding in our understanding
of component failure and engineering design.
