In the present paper, grid points coupled with an image analysis method are used to map strain gradients within grains and across interfaces of duplex stainless steels at the micro- and nanoscale under straining conditions (4.5% plastic strain). Highly heterogeneous strain field are obtained and sites where high strain gradients exist are identified. Local electrochemical meas-urements are then performed in NaCl-based media within these sites by means of the electrochemical microcell technique and 20 11m microcapillaries in order to propose new mechanical-electrochemical criteria leading to a significant enhancement of anodic and/Dr cathodic reactions and pitting susceptibility of deformed materials.
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