Degradation of artificially corroded galvanized high-strength steel wires: Corrosion morphology and mechanical behavior

Corrosion fatigue mechanisms and evaluation methods of high‐strength steel wires: A state‐of‐the‐art review

“…Subsequently, mild corrosion initiates shallow pits on the metal surface, which, as corrosion intensifies, can increase in both size and depth. Wan et al 12 identify four distinct pit morphologies on corroded steel wires: conical pits (i-type), hemispherical pits (ii-type), combined pits (iii-type), and secondary pits (iv-type), as depicted in Figure 5. Varied corrosion degrees lead to different surface pit morphologies, with conical and hemispherical pits being prevalent at low corrosion degrees and combined pits and secondary pits more common at higher corrosion levels.…”

“…These corrosion pits create stress concentrations on high-strength steel wire surfaces, adversely affecting the fatigue F I G U R E 5 (A) Corrosion morphology and (B) corrosion pits. 12 [Colour figure can be viewed at wileyonlinelibrary.com]…”

“…Researchers have conducted extensive investigations into the mechanisms governing corrosion fatigue crack initiation and propagation. [11][12][13] The deleterious effects of corrosion extend beyond mere reduction in material mechanical properties, manifesting as surface cracks and notches that hasten fatigue damage. Concurrently, fatigue loading induces stress concentration and dislocation movement, exacerbating corrosion progression and engendering a complex corrosion fatigue process.…”