A screw dislocation interacting with a coated nano-inhomogeneity incorporating interface stress

▶ If α < β < 1 and Λ1 = Λ2 > 0, unstable equilibrium position exist for screw dislocation. ▶ If β < α < 1 and Λ1 = Λ2 > 0, local hardening at interface due to the interface stress. ▶ If β < α< 1 and Λ1 = Λ2> 0, screw dislocation will be attracted to coated particle. ▶ For α < 1 and β < 1, coated particle will always attract screw dislocation and repulsion if β > 1. ▶ For α > 1 and β < 1, stable equilibrium position exist for screw dislocation. α and β are the respective shear modulus of the inclusion and the coating normalized by the matrix's shear modulus.