Abstract This work presents an innovative framework for the simulation of stable pit growth that accounts for the material microstructure in the computational model to investigate its effect on pit growth behavior. While many microstructural attributes can affect corrosion kinetics, the current work focuses on the effect of the crystallographic plane orientation at the corrosion front by utilizing variations in polarization behavior with orientation in a single phase material. The current modeling results show that crystallographic orientation significantly affects local pit growth rates (even with corrosion potential variations as little as 5–10% across orientations) and the resultant tortuous shapes are similar to pits observed in experimental studies.

中文翻译：

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点蚀的微观结构敏感建模：晶体取向的影响

摘要 这项工作提出了一种创新的稳定凹坑生长模拟框架，该框架考虑了计算模型中的材料微观结构，以研究其对凹坑生长行为的影响。虽然许多微观结构属性会影响腐蚀动力学，但目前的工作重点是通过利用单相材料中极化行为随取向的变化来研究腐蚀前沿晶面取向的影响。当前的建模结果表明，晶体取向显着影响局部凹坑的生长速率（即使腐蚀电位在不同方向上的变化只有 5-10%），并且由此产生的曲折形状与实验研究中观察到的凹坑相似。