Stress Corrosion Cracking of Pure Iron in Aqueous Amine Solution Saturated with CO2

Key Points

• This research investigates the behavior of pure iron under stress corrosion cracking in an aqueous amine solution.
• Conducted SSRT tests at various electrochemical potentials.
• Evaluated stress corrosion cracking occurrence under different applied potentials.
• Observed specimens using transmission electron microscopy to assess surface conditions.
• SCC did not occur at -0.55 V but was observed at -0.50 V.
• Both maximum stress and elongation dropped with SCC occurrence.
• Grain boundary SCC was confirmed through microscopy observations showing cracks in corrosion product films.