Interpretation of slip behaviour adjacent to (alpha/gamma) phase interfaces at the onset of yielding.

The compatibility requirement of elastic and plastic strains across the phase interfaces, in the (alpha/gamma) duplex steel bicrystals, results in the occurence of additional internally induced stresses, so-called incompatibility stresses. Structural effects observed along the (alpha/gamma) phase interfaces are due to the incompatibility stresses, which arise from elastic anisotropy and asymetry of plastic flow in component crystals as well as the stress relaxation from dislocation pile-ups in adjacent crystals and the stress distribution in the vicinity of the interfaces.