Investigation of Polarization Current During Slow Strain Rate Testing for Small Single-Edge Notch Specimens

Abstract The variation of polarization current during slow strain rate testing (SSRT) of mild steel using small single-edge notch (SEN) specimens in 3.5% NaCl neutral aqueous solution has been investigated. The experimental results indicated that the anodic dissolution current density produced by the monotonic tensile stress was smaller by about two orders of magnitude than that produced during corrosion fatigue (CF). Thus, it is expected that mild steel immersed in neutral NaCl solution will not undergo stress corrosion (SC), but it will exhibit CF.