Investigation of a single pit/defect evolution during the corrosion process |
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Authors: | Ramana M Pidaparti Ronak K Patel |
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Affiliation: | Department of Mechanical Engineering, Virginia Commonwealth University, 401 West Main Street, Richmond, VA, USA |
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Abstract: | The investigation of a single pit/defect evolution due to localized corrosion that is commonly observed in a wide range of aluminum alloys is reported. Electrochemical experiments, microscopy and computations were used to predict stresses around a single pit/defect. It was observed that the pit/defect profile changing its shape from slightly conical to more hemispherical shape with increasing corrosion time. Also, stress distribution and levels vary non-linearly around a single pit/defect. The results also indicate that the evolution of these pits/defects may lead to nucleation of a crack over time, which can be predicted from these stresses. |
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Keywords: | Metals Pits Defects Corrosion B AFM Stress analysis |
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