Abstract
This paper presents the results of a study examining the Cl− induced corrosion resistance of austenitic, duplex, and martensitic high-strength stainless steels (HSSSs) and a pearlitic prestressing steel using cyclic potentiodynamic polarization (CPP) techniques in simulated alkaline and carbonated concrete solutions. CPP testing found that in alkaline solutions, all HSSSs showed high corrosion resistance at Cl− concentrations from zero to 0.25M. When exposed to carbonated solutions, corrosion resistance was reduced and only duplex grades S32205 and S32304 exhibited high corrosion resistance. A strong correlation between microstructural defects (e.g., strain-induced martensite) and corrosion damage was observed in the cold-drawn HSSSs.
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