Influence of Plastic Deformation on the Corrosion Behavior of theAustenitic and Martensitic Stainless Steels

摘要

Sliding and corrosion test were performed simultaneously on three stainless steels atrnSurface Phenomena Laboratory of the Polytechnic School – S?o Paulo University. In thisrnpaper the effect of martensitic transformation induced by sliding wear on the corrosionrnbehavior of the austenitic stainless steels AISI 304, AISI 316 and martensitic stainless steelrnAISI 420 is studied. The sliding tests were performed in a pin-on-disk wear machine withrn5,8 N load running distance 3000 m. The corrosion behavior of these specimens wasrndetermined by electrochemical measurements in 3,5% NaCl aqueous solutions and wasrnanalyzed the different phases by X-Ray diffraction. Test results comparations were madernwith samples were only corrosion test were performed without mechanical deformation. Itrnwas observed that martensitic transformations affects the corrosion behavior and resistancernwear of these steels.