Effect of corrosion pit density on the fatigue life of aluminum 1050A

Adjel, S.; Merakeb, N.; Benchouia, S.; Ehlers, Sören; Baccouche, M.

doi:10.1007/s00170-018-2163-y

Cited by 6 publications

(1 citation statement)

References 18 publications

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“…However, due to the unclear definition of the dangerous corrosion pit, the parameters characterizing the geometric size of corrosion damage will be different [14]. At present, the corrosion pit width [15,16], the aspect ratio [17,18], the projected cross-section area [19,20], and the depth of corrosion pits [21,22] are widely used. However, after corrosion, the corrosion pits' morphology on the surface of the specimen is very complex.…”

Section: Introductionmentioning

confidence: 99%

Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation

Gao

Sheng

et al. 2020

Applied Sciences

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Based on the real annual average value of atmospheric environmental data in the Wanning area of Hainan Province in China by selecting 7075 ultra-high-strength aluminum alloy specimens for aviation, a new corrosion solution was designed and the traditional alternate immersion corrosion method of using the alternate immersion corrosion test box was improved to simulate the environment of the internal structure of the aircraft. On this basis, two kinds of corrosion damage parameters, the depth of corrosion pits and corrosion rate, were quickly and accurately obtained by the three-dimensional profile of the specimen and binarization images’ method. The optimal linear regression equation combination of pitting depth and corrosion rate was established, and the dynamic evolution equation of the depth of corrosion pits and corrosion rate was obtained. The results showed that: The depth of corrosion pits in the early stage of corrosion (8 h and 24 h) obeyed the Gumbel distribution and Weibull distribution, respectively, and the later stage (48 h, 72 h, 96 h, and 120 h) conformed to the normal distribution; the depth of corrosion pits’ evolution law was in the form of double straight lines and the corrosion rate evolution law was in the power function form (y = a × xb); and the depth of corrosion pits changed rapidly in the early stage and gradually slowed down in the later stage, while the corrosion rate was just the opposite.

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Section: Introductionmentioning

confidence: 99%