Simulation of Uniform Corrosion Process of U71Mn Hot-rolled Rail Based on Cellular Automata
The impact of environmental corrosion on rail service operations poses a direct safety threat.Therefore,the quantitative characterization of rail corrosion damage is of great significance for e-valuating rail reliability.Uniform corrosion experiments on U71Mn hot-rolled rail samples in a 3.5 wt.％NaCl solution at room temperature were first carried out.Changes in the diameters of two samples with corrosion time were measured.According to the experimental results,the corrosion mechanism of rail samples in the 3.5 wt.％Nacl solution was analyzed.A corrosion model employing cellular automata was developed to simulate the uniform corrosion behavior of rail samples in the NaCl solution.The corrosion rate was quantified by tracking sample diameter changes through the cellular automaton simulation over va-rying corrosion time.A unified prediction formula for different sample diameters with corrosion time was established.Results revealed an average relative error of 8.7％between predicted and measured data,indi-cating the efficacy of cellular automata in accurately simulating the uniform corrosion process of U71Mn hot-rolled rail samples.
万方数据
维普
