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<p>In this study, the modulation mechanism of quenching–tempering (Q&amp;T) treatment on corrosion resistance was revealed through multi-scale interface characterization and finite element simulation methods. Results showed that Q&amp;T treatment significantly enhanced the corrosion resistance of Cu-containing steel. The annual corrosion rate decreased from 0.059&#xa0;mm/a for untampered steel to 0.028&#xa0;mm/a for Q&amp;T steel. Numerical simulations showed that Q&amp;T treatment inhibited the local rapid expansion of cracks, making the crack propagation of the rust layer uniform and slow. Meanwhile, the Cl<sup>-</sup> penetration depth was reduced to 1.2 wt.%, significantly suppressing the invasion of corrosive media. Overall, Q&amp;T treatment inhibited micro-galvanic corrosion and improved rust layer protection, offering theoretical reference for enhancing marine engineering steel durability.</p>

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Corrosion Behavior Analysis of Cu-Containing Steel for Sheet Piles in Simulated Seawater Environment Based on Finite Element Method

  • 期刊论文

  • 发表日期：

    2026年1月20日

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  • Jingdong Wang,
  • Heming Zhao,
  • Xinyang Li,
  • Xingang Zhen,
  • Weijuan Li,
  • Hao Yu,
  • Yu Gao,
  • Junkai Zhang

摘要

In this study, the modulation mechanism of quenching–tempering (Q&T) treatment on corrosion resistance was revealed through multi-scale interface characterization and finite element simulation methods. Results showed that Q&T treatment significantly enhanced the corrosion resistance of Cu-containing steel. The annual corrosion rate decreased from 0.059 mm/a for untampered steel to 0.028 mm/a for Q&T steel. Numerical simulations showed that Q&T treatment inhibited the local rapid expansion of cracks, making the crack propagation of the rust layer uniform and slow. Meanwhile, the Cl- penetration depth was reduced to 1.2 wt.%, significantly suppressing the invasion of corrosive media. Overall, Q&T treatment inhibited micro-galvanic corrosion and improved rust layer protection, offering theoretical reference for enhancing marine engineering steel durability.