Influence of Chromium on Corrosion Resistance of Twip Steels in Sodium Sulfate (Na2so4) Environments
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Date
2025
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Abstract
This research explores the effect of chromium additions (5% and 10%) on
the corrosion behavior of Fe-22Mn-0.6C TWIP (Twinning Induced Plasticity) steel in
0.1 M Na2SO4 solutions at 25°C. Microstructures were characterized by using light
microscopy and X-ray diffraction (XRD). Corrosion products were analyzed via
scanning electron microscopy (SEM) and Raman spectroscopy. The results indicate
that chromium enhances corrosion resistance by promoting the formation of protective
oxide layers, although variations in chromium content significantly affect the uniformity
and stability of these layers. A comprehensive electrochemical analysis, including
open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS),
revealed the benefits of Cr alloying in improving the passivation behavior of TWIP
steels. The study highlights the potential of optimized Cr content to balance
mechanical strength and corrosion resistance in TWIP steels for industrial
applications.