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| Analysis of Corrosion Pitting Effect on Fatigue Crack Growth |
| Received:March 13, 2012 Revised:August 15, 2012 |
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| DOI： |
| KeyWord:aluminum alloy corrosion pitting corrosion morphology crack growth life |
| Author | Institution |
| CHEN Ding-hai |
1. Qingdao Branch of Naval Aeronautical Engineering Academy， Qingdao ， China;2. Unit 91049 of PLA， Qingdao ， China |
| MU Zhi-tao |
Qingdao Branch of Naval Aeronautical Engineering Academy， Qingdao ， China |
| ZHU Zuo-tao |
Unit 91049 of PLA， Qingdao ， China |
| DING Wen-yong |
Qingdao Branch of Naval Aeronautical Engineering Academy， Qingdao ， China |
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| Abstract: |
| Three-dimensional size of corrosion pitting of 6051 aluminum was measured by KH-7700 microscope. The cross-section morphology of corrosion pitting was analyzed, and the corrosion pitting can be approximated to a semi-ellipsoid. Fatigue crack growth life was analyzed with AFGROW. The results showed that pitting depth and width both have significant effect on fatigue crack growth life; with the increase of ratio of pitting depth and width, the fatigue crack growth life tended to be stable; and the pitting depth has greater effect on fatigue crack growth life than the width. |
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