Abstract

ARENAS-MARTINEZ, L.F  and  GARCIA-CERECERO, G.. Hydrogen Sulfide Corrosion of Weld Regions in API X52 Steel. Ing. invest. y tecnol. [online]. 2012, vol.13, n.4, pp.473-478. ISSN 2594-0732.

The corrosion behavior of gas metal arc welding (GMAW) regions has been studied using potentiodynamic polarization and polarization resistance (LPR) techniques. Experiments were conducted in hydrogen sulfide (H₂S)-containing brine and in H₂S-free brine. Welds were made on API 5L X52 steel. Due to differences in their microstructure, chemical composition and residual stress level, weld regions exhibited different responses under H₂S corrosion. Base metal exhibited the highest corrosion rate (CR) and the most cathodic corrosion potential.

Keywords : Weld regions; X52 steel; hydrogen sulfide; GMAW; corrosion.

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