|
| Dynamic Law of Corrosion Damage Distribution of High Strength Aluminum Alloy Based on Two-parameter Weibull Distribution |
| Received:January 17, 2019 Revised:July 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.07.006 |
| KeyWord:aluminum alloy two-parameter Weibull distribution corrosion damage |
| Author | Institution |
| ZHANG Deng |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control China Special Vehicle Research Institute, Jingmen , China |
| LI Meng-si |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control China Special Vehicle Research Institute, Jingmen , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To study the distribution kinetics of corrosion damage in high strength aluminum alloy. Methods By calculating the corrosion pit depth and diameter of high-strength aluminum alloy materials and fitting the two-parameter Weibull distribution, two parameters α and β in the two-parameter Weibull distribution were proposed as the characterization quantities of the corrosion damage distribution of high-strength aluminum alloy materials, and a variety of mathematical models of α and β with the increase of corrosion time were established. Results α decreased with the increase of corrosion time, while β increased with the increase of corrosion time, and the distribution parameters can well conform to the first-order exponential function model. Conclusion Compared with the physical phenomenon of actual pit distribution growth, the change trend of α and β can reveal the change process of pit distribution growth with time, and the dynamic law of corrosion damage distribution can well conform to the first-order exponential function model. |
| Close |