Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment
Aircraft aluminum alloy is easy to initiate pitting corrosion in the service environment, the pitting corrosion topography characteristics could directly affect the fatigue mechanical property of structure material. In order to obtain the pitting corrosion topography characteristics of LC4 aluminum...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Aeronautical Materials
2017-08-01
|
| Series: | Journal of Aeronautical Materials |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/CN/Y2017/V37/I4/25 |
| _version_ | 1828842953711288320 |
|---|---|
| author | LIU Zhiguo LI Xudong MU Zhitao |
| author_facet | LIU Zhiguo LI Xudong MU Zhitao |
| author_sort | LIU Zhiguo |
| collection | DOAJ |
| description | Aircraft aluminum alloy is easy to initiate pitting corrosion in the service environment, the pitting corrosion topography characteristics could directly affect the fatigue mechanical property of structure material. In order to obtain the pitting corrosion topography characteristics of LC4 aluminum alloy in the service environment, the accelerated corrosion test was carried out along the accelerated corrosion test environment spectrum which imitated the service environment spectrum, and the corrosion topography characteristic parameters of corrosion pit depth <i>H</i>,corrosion pit surface length <i>L</i> and corrosion pit surface width <i>W</i> were defined respectively. During the corrosion test process,the three parameters of typical corrosion pit were successively measured in different equivalent corrosion years for obtaining the corrosion pit damage size data, then the data were analysed through the statistics method and fractal theory. Further more in order to gain the pit topography characteristics in the same equivalent corrosion year and the topography evolution laws during different equivalent corrosion years were gained. The analysis results indicate that LC4 aluminum alloy corrosion pit topography characteristics in the service environment include the following:firstly, the pit topography characteristic parameters conform to the lognormal distributions in the same equivalent corrosion years; secondly,the pit topography characteristic parameters gradually reflect the fractal feature in accordance with the equivalent corrosion year increment, and the pits tend to be shallow, long and moderate wide topography character. |
| first_indexed | 2024-12-12T20:35:32Z |
| format | Article |
| id | doaj.art-ba5da6d9ccfd4073b91bdd96c1e0a5e5 |
| institution | Directory Open Access Journal |
| issn | 1005-5053 1005-5053 |
| language | zho |
| last_indexed | 2024-12-12T20:35:32Z |
| publishDate | 2017-08-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-ba5da6d9ccfd4073b91bdd96c1e0a5e52022-12-22T00:12:56ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50531005-50532017-08-01374253210.11868/j.issn.1005-5053.2016.000229201704000229Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service EnvironmentLIU Zhiguo0LI Xudong1MU Zhitao2Naval Aeronautical Engineering Academy Qingdao Branch, Qingdao 266041, Shandong ChinaNaval Aeronautical Engineering Academy Qingdao Branch, Qingdao 266041, Shandong ChinaNaval Aeronautical Engineering Academy Qingdao Branch, Qingdao 266041, Shandong ChinaAircraft aluminum alloy is easy to initiate pitting corrosion in the service environment, the pitting corrosion topography characteristics could directly affect the fatigue mechanical property of structure material. In order to obtain the pitting corrosion topography characteristics of LC4 aluminum alloy in the service environment, the accelerated corrosion test was carried out along the accelerated corrosion test environment spectrum which imitated the service environment spectrum, and the corrosion topography characteristic parameters of corrosion pit depth <i>H</i>,corrosion pit surface length <i>L</i> and corrosion pit surface width <i>W</i> were defined respectively. During the corrosion test process,the three parameters of typical corrosion pit were successively measured in different equivalent corrosion years for obtaining the corrosion pit damage size data, then the data were analysed through the statistics method and fractal theory. Further more in order to gain the pit topography characteristics in the same equivalent corrosion year and the topography evolution laws during different equivalent corrosion years were gained. The analysis results indicate that LC4 aluminum alloy corrosion pit topography characteristics in the service environment include the following:firstly, the pit topography characteristic parameters conform to the lognormal distributions in the same equivalent corrosion years; secondly,the pit topography characteristic parameters gradually reflect the fractal feature in accordance with the equivalent corrosion year increment, and the pits tend to be shallow, long and moderate wide topography character.http://jam.biam.ac.cn/CN/Y2017/V37/I4/25aluminum alloyspitting corrosiontopography characteristicsstatistical analysisfractal theory |
| spellingShingle | LIU Zhiguo LI Xudong MU Zhitao Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment Journal of Aeronautical Materials aluminum alloys pitting corrosion topography characteristics statistical analysis fractal theory |
| title | Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment |
| title_full | Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment |
| title_fullStr | Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment |
| title_full_unstemmed | Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment |
| title_short | Pitting Corrosion Topography Characteristics and Evolution Laws of LC4 Aluminum Alloy in Service Environment |
| title_sort | pitting corrosion topography characteristics and evolution laws of lc4 aluminum alloy in service environment |
| topic | aluminum alloys pitting corrosion topography characteristics statistical analysis fractal theory |
| url | http://jam.biam.ac.cn/CN/Y2017/V37/I4/25 |
| work_keys_str_mv | AT liuzhiguo pittingcorrosiontopographycharacteristicsandevolutionlawsoflc4aluminumalloyinserviceenvironment AT lixudong pittingcorrosiontopographycharacteristicsandevolutionlawsoflc4aluminumalloyinserviceenvironment AT muzhitao pittingcorrosiontopographycharacteristicsandevolutionlawsoflc4aluminumalloyinserviceenvironment |