EFFECT OF DEFORMATION ON PITTING CORROSION OF STEEL 1Kh18N10T.

E. M. Gutman, E. V. Budilova, B. Yu Lukin

Research output: Contribution to journalArticlepeer-review

Abstract

Plastic deformation increses the susceptibility of Cr - Ni steel pitting corrosion in chloride solutions, which is associated with the lowered potential of local disruption of passivity. The latter may be due to an increase of local mechanicochemical activity of the metal in the anodic reaction. It has also been observed that pitting corrosion of Fe - Cr alloys increases due to deformation of surface layers, and the electrochemical behavior of iron wire varies with the degree of reduction in local areas. With reference to the behavior of corrugated expansion joints of steel 1Kh18N10T, the authors investigated the variation of the potential at which passivity is disrupted ( psi //p), residual microstresses of second order, and the density of pits (n) with the degree of deformation in all regions of the stresses - strain diagram ( sigma - epsilon ), and also the relationship between the distribution of second-order microstresses and pits.

Original languageEnglish
Pages (from-to)683-684
Number of pages2
JournalProtection of Metals
Volume11
Issue number6
StatePublished - 1 Jan 1975

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