Abstract
Pitting corrosion of a cold-worked 18Cr 10Ni 2Mo stainless steel in an 0.1M NaC1 solution was studied using a potentiostatic technique, and statistical measurements of the pit dimensions and distribution were made using a metallographic image analyzer. The effect of cold work (tensile deformation 30 % max) on the number and size of the corrosion pits was evaluated by confronting the electrochemical and the metallographic data. The total area of pits and the corrosion current density increased monotonously with increasing deformation. The number of pits also increased, except at 15 % deformation. The growth rate of the pits was accelerated by ca. 45 % after small deformation (1 %) but was subject to little additional change after heavier deformation.
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