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In Science and technology of advanced materials

The empirical modeling methods are widely used in corrosion behavior analysis. But due to the limited regression ability of conventional algorithms, modeling objects are often limited to individual factors and specific environments. This study proposed a modeling method based on machine learning to simulate the marine atmospheric corrosion behavior of low-alloy steels. The correlations between material, environmental factors and corrosion rate were evaluated, and their influences on the corrosion behavior of steels were analyzed intuitively. By using the selected dominating factors as input variables, an optimized random forest model was established with a high prediction accuracy of corrosion rate (R2 values, 0.94 and 0.73 to the training set and testing set) to different low-alloy steel samples in several typical marine atmospheric environments. The results demonstrated that machine learning was efficient in corrosion behavior analysis, which usually involves a regression analysis of multiple factors.

Yan Luchun, Diao Yupeng, Lang Zhaoyang, Gao Kewei

2020-Jun-19

106 Metallic materials, 212 Surface and interfaces, 404 Materials informatics / Genomics, Atmospheric corrosion, corrosion, data mining, materials informatics, random forest, regression analysis