Effect of plastic deformation on surface reactivity of 316L stainless steel

摘要

Numerous studies have shown that processes of corrosion (dissolution, passivation) were modified with the increase of plastic strain. In order to study these processes, an experimental investigation was carried out on a 316L stainless steel in acidic chloride solution. The plastic pre-straining effect on polarisation curves were studied for various values of plastic strains corresponding to the three stages of strain hardening. After the specimen pre-straining, polarisation curves were performed after polishing the surface in order to analyse the competition between the passive film behaviour and the dissolution processes without surface roughness effects.