The Corrosion Properties of S355J2 Steel Welded Joint in Chlorides Environment

  • Kamil Borko Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia
  • Branislav Hadzima Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia, Research Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia
  • Filip Pastorek Research Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia

Abstract

Nowadays are steels the most used structural material for creation of constructions in different types of industry for lot of applications but suffer from unsatisfactory corrosion resistance in the presence of aggressive chlorides. Steel S355J2 represents common type steel for constructions. Very important property of S355J2 steel is weldability. S355J2 steel was welded by submerged arc welding (SAW) method. Corrosion resistance of welded joint was evaluated by electrochemical methods - linear polarization (LP) and electrochemical impedance spectroscopy (EIS). Results from electrochemical tests are general electrochemical characteristics - ECorr, iCorr, vCorr and RP. Environments for testing were solutions with different concentration of chlorides (0.01M, 0.1M and 1M NaCl solution). Difference of corrosion resistance between base material and weld metal is app. 14.5 %. This difference is preserved in all concentrations of tested environments. The highest corrosion resistance was reached by base material in 0.01M NaCl and the lowest corrosion resistance was reached by weld metal in 1M NaCl.

Keywords: steel, corrosion, S355, welding, welded joint
Published online
2018-06-18
How to Cite
Borko, K., Hadzima, B. and Pastorek, F. “The Corrosion Properties of S355J2 Steel Welded Joint in Chlorides Environment”, Periodica Polytechnica Transportation Engineering. doi: https://doi.org/10.3311/PPtr.12111.
Section
Articles