Pitting morphologies of E690 low-alloy steel in industrial and non-industrial marine splash zones are statistically analyzed, including the influence of plastic deformation. Results show that in a marine splash zone, E690 low-alloy steel experiences severe uniform corrosion and pitting corrosion, and the corrosion is more severe in the high-temperature non-industrial environment. The relationship between the pitting area changes and the depth can be well fitted to the Boltzmann cumulative distribution function to investigate the corrosion factors. In non-industrial marine splash zone, high content of chloride ions makes the metal surface have a high roughness and anodic dissolution is then promoted. The pitting depth is strongly promoted by anodic dissolution. In the marine splash zone, plastic deformation aggravates the maximum pitting depth, especially in the initial stage and in SO₂-pollutant environments, although this effect gradually decreases. Pitting on low plastic deformation area in U bend samples may influenced by receiving electrons, which inhibits the protective FeOOH generation.

统计分析了E690低合金钢在工业和非工业海洋飞溅区的点蚀形态，包括塑性变形的影响。结果表明，在海洋飞溅区中，E690低合金钢受到严重的均匀腐蚀和点蚀，在高温非工业环境中腐蚀更为严重。点蚀面积变化与深度之间的关系可以很好地拟合到玻尔兹曼累积分布函数，以研究腐蚀因素。在非工业海洋飞溅区中，高含量的氯离子使金属表面具有较高的粗糙度，从而促进了阳极溶解。阳极溶解强烈促进了点蚀深度。在海洋飞溅区，塑性变形加剧了最大点蚀深度，_2-污染环境，尽管这种影响逐渐降低。U形弯曲样品中低塑性变形区域的点蚀可能受到接收电子的影响，从而抑制了保护性FeOOH的产生。