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| Research on Corrosion Behavior of 2D12 Aluminum Alloy for Aircraft in Marine Atmospheric Environment |
| Received:March 27, 2012 Revised:August 15, 2012 |
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| DOI： |
| KeyWord:2D12 aluminum alloy marine atmospheric environment exposure test weight loss mechanical property |
| Author | Institution |
| LUO Lai-zheng |
1. No.59 Institute of China Ordnance Industry， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| XIAO Yong |
1. No.59 Institute of China Ordnance Industry， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| CHEN Zhi-jun |
1. No.59 Institute of China Ordnance Industry， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| WANG Tong-zhou |
No.59 Institute of China Ordnance Industry， Chongqing ， China |
| SHU Chang |
1. No.59 Institute of China Ordnance Industry， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
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| Abstract: |
| Marine atmospheric exposure test of 2D12 aluminum alloy was carried out in Wanning exposure site. The corrosion rule and behavior of 2D12 aluminum alloy were investigated by weight loss, mechanical property, and micrographic morphology analysis. The result showed that the relationship between weight loss and exposure time of 2D12 aluminum alloy can be regressed by power function; the tensile strength of 2D12 decreases first with exposure time and then reach balanced with further increasing exposure time; the percentage elongation after fracture of 2D12 decreases with increasing exposure time. The micrographic morphology analysis showed that 2D12 aluminum alloy corrosion develops from pit corrosion into intergranular corrosion. |
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