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Environmental Durability of Aircraft Aluminum Alloy Skin Materials
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English
Abstract
This paper compares the environmental durability of currently used as well as some of the potential aircraft aluminum alloy skin materials. A simple test was developed to evaluate the environmental durability by simultaneous application of fatigue loads and aerated salt water attack. Alclad alloys showed excellent resistance to corrosion fatigue. On the other hand, 7475 alloy and new potential material 6013 alloy experienced inter-granular corrosion at the fatigue crack origin area. The test results also indicated the significance of corrosion preventive coatings to increase the age of aircraft.
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Citation
Patni, K., Eftekhari, A., Gondhalekar, V., Chaudhuri, J. et al., "Environmental Durability of Aircraft Aluminum Alloy Skin Materials," SAE Technical Paper 931229, 1993, https://doi.org/10.4271/931229.Also In
References
- “Comparison of corrosion fatigue properties of 6013 Bare, Alclad 2024 and 2024 Bare aluminum alloy sheet materials” Chaudhuri J. Tan Y.M. Patni K. Eftekhari A. J. of Mat. Eng. and Perf. 1 1992 91
- Environmental effects on fatigue crack propagation Metals Hand Book Ninth 8