Abstract
The influence of residual surface stresses generated by polishing on the pitting susceptibility of duplex stainless steels was studied by combining microelectrochemical measurements with thermal-mechanical simulation. It has been shown that the surface stress state was the driving force for pit initiation along the austenite/ferrite interface. The local stress gradient was the key-parameter in pit initiation and the local average stress was the parameter governing the transition from metastable to stable pitting.
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