Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation
Based on the real annual average value of atmospheric environmental data in the Wanning area of Hainan Province in China by selecting 7075 ultra-high-strength aluminum alloy specimens for aviation, a new corrosion solution was designed and the traditional alternate immersion corrosion method of usin...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/20/7184 |
| _version_ | 1827704260510351360 |
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| author | Zhigang Gao Yuting He Sheng Zhang Tianyu Zhang Fei Yang |
| author_facet | Zhigang Gao Yuting He Sheng Zhang Tianyu Zhang Fei Yang |
| author_sort | Zhigang Gao |
| collection | DOAJ |
| description | Based on the real annual average value of atmospheric environmental data in the Wanning area of Hainan Province in China by selecting 7075 ultra-high-strength aluminum alloy specimens for aviation, a new corrosion solution was designed and the traditional alternate immersion corrosion method of using the alternate immersion corrosion test box was improved to simulate the environment of the internal structure of the aircraft. On this basis, two kinds of corrosion damage parameters, the depth of corrosion pits and corrosion rate, were quickly and accurately obtained by the three-dimensional profile of the specimen and binarization images’ method. The optimal linear regression equation combination of pitting depth and corrosion rate was established, and the dynamic evolution equation of the depth of corrosion pits and corrosion rate was obtained. The results showed that: The depth of corrosion pits in the early stage of corrosion (8 h and 24 h) obeyed the Gumbel distribution and Weibull distribution, respectively, and the later stage (48 h, 72 h, 96 h, and 120 h) conformed to the normal distribution; the depth of corrosion pits’ evolution law was in the form of double straight lines and the corrosion rate evolution law was in the power function form (<i>y</i> = <i>a</i> × <i>x<sup>b</sup></i>); and the depth of corrosion pits changed rapidly in the early stage and gradually slowed down in the later stage, while the corrosion rate was just the opposite. |
| first_indexed | 2024-03-10T15:36:09Z |
| format | Article |
| id | doaj.art-28c9320948f047708884135f7b33375e |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T15:36:09Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-28c9320948f047708884135f7b33375e2023-11-20T17:10:22ZengMDPI AGApplied Sciences2076-34172020-10-011020718410.3390/app10207184Research on Corrosion Damage Evolution of Aluminum Alloy for AviationZhigang Gao0Yuting He1Sheng Zhang2Tianyu Zhang3Fei Yang4Aeronautics Engineering College, Air Force Engineering University, Xi’an 710038, ChinaAeronautics Engineering College, Air Force Engineering University, Xi’an 710038, ChinaAeronautics Engineering College, Air Force Engineering University, Xi’an 710038, ChinaAeronautics Engineering College, Air Force Engineering University, Xi’an 710038, ChinaAeronautics Engineering College, Air Force Engineering University, Xi’an 710038, ChinaBased on the real annual average value of atmospheric environmental data in the Wanning area of Hainan Province in China by selecting 7075 ultra-high-strength aluminum alloy specimens for aviation, a new corrosion solution was designed and the traditional alternate immersion corrosion method of using the alternate immersion corrosion test box was improved to simulate the environment of the internal structure of the aircraft. On this basis, two kinds of corrosion damage parameters, the depth of corrosion pits and corrosion rate, were quickly and accurately obtained by the three-dimensional profile of the specimen and binarization images’ method. The optimal linear regression equation combination of pitting depth and corrosion rate was established, and the dynamic evolution equation of the depth of corrosion pits and corrosion rate was obtained. The results showed that: The depth of corrosion pits in the early stage of corrosion (8 h and 24 h) obeyed the Gumbel distribution and Weibull distribution, respectively, and the later stage (48 h, 72 h, 96 h, and 120 h) conformed to the normal distribution; the depth of corrosion pits’ evolution law was in the form of double straight lines and the corrosion rate evolution law was in the power function form (<i>y</i> = <i>a</i> × <i>x<sup>b</sup></i>); and the depth of corrosion pits changed rapidly in the early stage and gradually slowed down in the later stage, while the corrosion rate was just the opposite.https://www.mdpi.com/2076-3417/10/20/71847075 aluminum alloydepth of corrosion pitscorrosion ratebinarizationdynamic law |
| spellingShingle | Zhigang Gao Yuting He Sheng Zhang Tianyu Zhang Fei Yang Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation Applied Sciences 7075 aluminum alloy depth of corrosion pits corrosion rate binarization dynamic law |
| title | Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation |
| title_full | Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation |
| title_fullStr | Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation |
| title_full_unstemmed | Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation |
| title_short | Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation |
| title_sort | research on corrosion damage evolution of aluminum alloy for aviation |
| topic | 7075 aluminum alloy depth of corrosion pits corrosion rate binarization dynamic law |
| url | https://www.mdpi.com/2076-3417/10/20/7184 |
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