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| Accelerated Test Method for High Strength Aluminum Alloy in Typical Coastal Area |
| Received:April 23, 2019 Revised:April 28, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.05.005 |
| KeyWord:high strength aluminium alloy the coastal atmosphere corrodes environment environment spectrum fatigue accelerated test |
| Author | Institution |
| CUI Teng-fei |
Integrated Technology Research Department, China Helicopter Research and Development Institute, Jingdezhen , China;Corrosion and Protection Research Laboratory, Northwestern Polytechnical University, Xi¢an , China |
| LIU Dao-xin |
Corrosion and Protection Research Laboratory, Northwestern Polytechnical University, Xi¢an , China |
| XU Xing-chen |
Integrated Technology Research Department, China Helicopter Research and Development Institute, Jingdezhen , China |
| HE Yu-ting |
Institute of Aerospace Engineering, Air Force Engineering University, Xi¢an , China |
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| Abstract: |
| The paper aims to establish a test method for accelerated corrosion test of high strength aluminum alloys in an industrial marine climate area. Typical high strength 7B04-T6 aluminum alloys for aircraft structure was used for laboratory accelerated corrosion test and atmospheric environment exposure corrosion test. After test, the fatigue property of the sample was evaluated. By average corrosion rate test, corrosion morphology observation and fatigue fracture feature analysis, and corrosion acceleration ratio calculation, the corrosion mechanism and fatigue failure behavior of two types of aluminium alloy were comprehensively compared. The corrosion mode of 7B04-T6 aluminum alloy that undergone accelerated corrosion in laboratory and exposure atmospheric environmental was same. Their mass loss rates were basically the same. Their corrosion morphologies were similar and their fatigue fracture characteristics were consistent. So, the laboratory accelerated environmental spectra and test method could be used as an accelerated test method of high strength aluminum alloy material and structure in an industrial marine climate area. The accelerative ration of laboratory and field exposure is 97.64. |
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