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| Atmospheric Exposure Test of AF1410High-strength Steel |
| Received:July 06, 2013 Revised:November 04, 2013 |
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| DOI：10.7643/issn.1672-9242.2013.06.005 |
| KeyWord:atmospheric corrosion high-strength steel corrosion behavior |
| Author | Institution |
| ZHANG Xing-hua |
AVIC Beijing Institute of Aeronautical Materials，Beijing，China |
| LUO Chen |
AVIC Beijing Institute of Aeronautical Materials，Beijing，China |
| LIU Ming |
AVIC Beijing Institute of Aeronautical Materials，Beijing，China |
| SUN Zhi-hua |
AVIC Beijing Institute of Aeronautical Materials，Beijing，China |
| LU Feng |
AVIC Beijing Institute of Aeronautical Materials，Beijing，China |
| TANG Zhi-hui |
AVIC Beijing Institute of Aeronautical Materials，Beijing，China |
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| Abstract: |
| Objective To study the atmospheric corrosion characteristics and rules of AF1410high-strength steel.Methods Through the study of natural atmospheric exposure test, the samples were analyzed using the weight loss analysis, image processing, section analysis, electrochemical Methods and so on.ResultsThe corrosion rate of AF1410 high-strength steel decreased as the thickness of corrosion products increased in the initial corrosion stage. As the exposure time increased, the internal stress of the rust layer increased because of the thickness of corrosion products increased, this situation led to cracking of the rust layer until falling off, and the corrosion rate increased at this point.Later the corrosion rate decreased with the increase in the thickness of the corrosion products. For the samples exposed for 5years, the thickness of corrosion products increased, and the phenomenon of corrosion cracking and local falling off increased.Conclusion The corrosion rate of AF1410high-strength steel showed an undulation process. |
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