Influence of Mechanical Parameters on Corrosion Behavior of Metal Coupons in Simulated Environmental Conditions

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This is an unedited manuscript accepted for publication and provided as an Article in Press for early access at the author’s request. The article will undergo copyediting, typesetting, and galley proof review before final publication. Please be aware that errors may be identified during production that could affect the content. All legal disclaimers of the journal apply.

Year : 2025 | Volume : 03 | 02 | Page :
    By

    Akpuh Davidson,

  • Faith Uchendu Okirie,

  1. Lecturer, Mechanical Engineering Department, Federal Polytechnic of Oil and Gas Bonny, Rivers State, Nigeria
  2. Researcher, Chemical/Petrochemical Engineering Department, Rivers state University, Port Harcourt, Rivers State, Nigeria

Abstract

This study investigates the influence of mechanical parameters—namely applied stress, surface roughness, and deformation history—on the corrosion behavior of metal coupons exposed to corrosive environments. Mild steel and aluminum alloy specimens were prepared with controlled variations in tensile stress, polishing grades, and cold-working levels to simulate real-world mechanical influences. These coupons were immersed in a 3.5% NaCl solution under ambient conditions, and their corrosion rates were monitored over a 30-day period using weight loss measurements and electrochemical impedance spectroscopy (EIS). Results showed that increased tensile stress significantly accelerated corrosion, particularly in the steel samples, suggesting a synergistic effect of mechanical strain and electrochemical degradation. Similarly, surface roughness enhanced corrosion initiation due to increased surface area and micro-crevice formation, promoting localized attack. Cold-worked samples exhibited higher susceptibility to pitting and intergranular corrosion, attributed to strain-induced dislocations acting as anodic sites. Among the tested conditions, the combination of high stress and rough surface yielded the highest corrosion rates. These findings demonstrate the critical role mechanical parameters play in influencing corrosion performance, particularly in structures exposed to simultaneous mechanical and environmental stresses. The study underscores the need to incorporate mechanical considerations in corrosion prediction models and highlights the importance of selecting proper finishing and loading conditions in design to improve material longevity. Further studies are recommended to evaluate these effects under dynamic loading and variable environmental parameters.

Keywords: Corrosion, Metal Coupons, Environmental Conditions, metallic materials, Tensile Stress

How to cite this article:
Akpuh Davidson, Faith Uchendu Okirie. Influence of Mechanical Parameters on Corrosion Behavior of Metal Coupons in Simulated Environmental Conditions. International Journal of Fracture Mechanics and Damage Science. 2025; 03(02):-.
How to cite this URL:
Akpuh Davidson, Faith Uchendu Okirie. Influence of Mechanical Parameters on Corrosion Behavior of Metal Coupons in Simulated Environmental Conditions. International Journal of Fracture Mechanics and Damage Science. 2025; 03(02):-. Available from: https://journals.stmjournals.com/ijfmds/article=2025/view=235292


References

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Ahead of Print Subscription Original Research
Volume 03
02
Received 10/12/2025
Accepted 18/12/2025
Published 30/12/2025
Publication Time 20 Days
72

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