Proceedings of the 2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018)

Pitting Corrosion Morphology Characteristics of 7B04 Aluminum Alloys In Airport Environment Based on Fractal Theory

Authors
Zhiguo Liu, Na Zhang, Guang-yao Yan
Corresponding Author
Zhiguo Liu
Available Online May 2018.
DOI
https://doi.org/10.2991/amcce-18.2018.105How to use a DOI?
Keywords
Aluminum alloys, Pitting corrosion, Morphology characteristics, Fractal theory, Fractal dimension
Abstract
Aircraft aluminum alloy is easy to initiate pitting corrosion in the airport environment, and the pitting corrosion topography characteristics could directly affect the fatigue mechanical property of aluminum alloy structure. In order to obtain the pitting corrosion characteristics of 7B04 aluminum alloy in the airport environment, the pitting corrosion test was carried out according to the accelerated corrosion environment spectrum which simulated the airport environment, and the corrosion damage parameters were defined, including corrosion pit depth , corrosion pit surface length and the corrosion pit surface width . During the corrosion test process, the three parameters of typical corrosion pits were successively measured in different corrosion period to obtain the corrosion pit damage size data, then the data was statistically analysed and used to compute the fractal dimension of corrosion damage based on the fractal theory by which to gain the pitting corrosion damage characteristics and its evolvement rules during pitting corrosion process. The computation results show that the corrosion pit damage clearly appears fractal characteristics and the fractal dimension of corrosion pit gradually increases with corrosion time prolongation, which suggests that the corrosion pit damage trends to be shallow and long and moderate wide topography character in the later corrosion period.
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Proceedings
2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018)
Part of series
Advances in Engineering Research
Publication Date
May 2018
ISBN
978-94-6252-508-5
ISSN
2352-5401
DOI
https://doi.org/10.2991/amcce-18.2018.105How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Zhiguo Liu
AU  - Na Zhang
AU  - Guang-yao Yan
PY  - 2018/05
DA  - 2018/05
TI  - Pitting Corrosion Morphology Characteristics of 7B04 Aluminum Alloys In Airport Environment Based on Fractal Theory
BT  - 2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/amcce-18.2018.105
DO  - https://doi.org/10.2991/amcce-18.2018.105
ID  - Liu2018/05
ER  -