6533b821fe1ef96bd127b6fe

RESEARCH PRODUCT

Study of the mechanical effects on passivity breakdown by local probe techniques

Vincent VignalNicolas MaryRoland Oltra

subject

AusteniteMaterials scienceResidual stressFerrite (iron)Surface stressMetallurgyPitting corrosionPolishingMicrostructureMicroscale chemistry

description

This paper aims at demonstrating that a relationship exists between surface stress and pitting corrosion. The surface stress field generated by polishing was first calculated using a thermo-mechanical model and a finite element code. Pitting corrosion tests performed at the microscale along the austenite/ferrite interface using the electrochemical microcell technique were then analyzed considering the microstructure and the residual surface stress field. Mechano-chemical criteria are proposed leading to an enhancement of pitting corrosion of duplex steels.

yearjournalcountryeditionlanguage
2006-01-01
https://doi.org/10.1016/b978-044452224-5/50072-x