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| Effect of Pitting Corrosion on Mechanical Properties of Pull Plates on Aluminum Ship |
| Received:May 21, 2018 Revised:January 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.01.019 |
| KeyWord:pitting corrosion service for ten years plate of aluminum hull ship mechanical property |
| Author | Institution |
| QI Yun-fei |
Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd, Qingdao , China |
| DONG Cai-chang |
Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd, Qingdao , China |
| LI Chao |
Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd, Qingdao , China |
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| Abstract: |
| Objective To provide the experimental data support for repairing and replacing plates for aluminum hull ship under different corrosion conditions. Methods The mechanical properties of the plate of the aluminum hull ship with different corrosion conditions (areas without apparent corrosion and with penetrating pitting and multipoint pitting) in service for ten years were studied. Results The aluminum plate in the service had no pitting. Its tensile strength was as small as 9.6%. The greater the depth of pitting was, the greater the loss of mechanical properties was. When the maximum pitting depth was 87.7%, the loss rate of tensile strength reached 56%. The mechanical properties of the sample with the same point corrosion cover area were lost more with the greater depth of point corrosion. Conclusion The depth of point corrosion has a great influence on the mechanical prop-erties of the plate of the aluminum hull. |
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