Study on the galvanic corrosion of aluminum alloy single bolted lap joints in simulated atmospheres

Zhang, Y.; Chen, Y.-L.; Fan, Weijie; Wang, C.-G.; Bian, Guangdong

doi:10.1002/maco.201709555

Cited by 8 publications

(3 citation statements)

References 13 publications

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“…[ 26 ] The corrosion potential of 5083 aluminum alloy and Q235 steel are lower than the redox potential, indicating that the 5083 aluminum alloy and Q235 steel have oxygen absorption corrosion in a 3.5% NaCl solution. [ 27 ] With increasing temperature, the diffusion rate of ions in 3.5% NaCl solution is accelerated, and the corrosion reaction is predominantly controlled by the reduction of cathodic oxygen. Thus, increasing temperature aggravates the corrosion of aluminum alloys and steels.…”

Section: Resultsmentioning

confidence: 99%

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Galvanic corrosion behavior and numerical simulation of 5083 aluminum alloy and Q235 steel in 3.5% NaCl solution

Rong

Fan

Shan

et al. 2023

Materials & Corrosion

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In marine engineering structures, the combination of different materials is inevitable, and the risk of galvanic corrosion is common. In this study, the effects of temperature on the corrosion behavior of 5083 aluminum alloy and Q235 steel in 3.5% NaCl solution were studied by scanning Kelvin probe, stereomicroscopy, X-ray diffraction, and electrochemical analysis. When the 5083 aluminum alloy and Q235 steel were coupled, the 5083 aluminum alloy was the anode, and its corrosion rate was accelerated. Results showed that with increasing temperature, the galvanic potential shifted to slightly more negative values, the galvanic current density increased, and the increase in temperature accelerated the galvanic corrosion rate. A galvanic corrosion simulation model was established, the polarization curve fitting parameters of 5083 aluminum alloy and Q235 steel were used as boundary conditions, and the potential distribution and current density distribution on the electrode surface were simulated by the finite element method. Simulation results were generally consistent with experimental results.

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Section: Resultsmentioning

confidence: 99%

“…According to the mixed potential theory, the galvanic potential and galvanic current density after a coupling between different metals can be inferred from the anodic polarization curve of the anode metal and the cathodic polarization curve of the cathode metal. [25][26][27][28][29]…”

Section: Ocp Measurementsmentioning

confidence: 99%

Galvanic corrosion behavior and numerical simulation of 5083 aluminum alloy and Q235 steel in 3.5% NaCl solution

Rong

Fan

Shan

et al. 2023

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…For now, most relevant investigations focus on the corrosion mechanism of bolted connection and the change of load-carrying performance after corrosion in different structures. For instance, several researchers [17][18][19][20][21][22][23] investigated the bolted joints' corrosion mechanism in aircraft, steel bridges, satellite launch vehicles, and automotive applications, respectively. Moreover, some investigations [24][25][26][27][28] on structural performance degradation caused by bolt corrosion have been reported.…”

Section: Introductionmentioning

confidence: 99%

Identification of multi-bolt head corrosion using linear and nonlinear shapelet-based acousto-ultrasonic methods

Wang

2021

Smart Mater. Struct.

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Among different types of fasteners used in multiple industries, the bolted connection attracts the most attention due to its low costs and ease of operation. However, bolt failures may induce severe catastrophes if not timely detected. One of the most common bolt failures is bolt corrosion (especially at the bolt head), and bolt head corrosion can significantly affect the mechanical performance of the bolted connection and even the entire structure. So far, no relevant investigations have been conducted to detect multi-bolt head corrosion, and thus the author applies the linear and nonlinear acousto-ultrasonic methods to attempt to solve this problem for the first time. Notably, this paper’s main contribution is that two new shapelet-based acousto-ultrasonic methods, i.e. shapelet-based active sensing and shapelet-based vibro-acoustic modulation (VAM), are developed by utilizing the concept of time-series shapelets. Compared to existing approaches such as entropy-enhanced acousto-ultrasonic methods, the proposed shapelet-based active sensing and shapelet-based VAM can achieve better detection performance. Finally, by conducting a multi-bolt head corrosion test, the effectiveness of the proposed methods is verified. Overall, the proposed methods can provide a new direction for researching bolt corrosion identification, and they can also contribute to the development of structural health monitoring, e.g. the detection of other structural damages in future work.

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A method of atmospheric corrosion prediction for aircraft structure

Chen

Huang

Zhang

et al. 2018

Materials & Corrosion

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A simulation prediction system, test pieces → flat test pieces → structural parts, for the atmospheric corrosion of aircraft is proposed to provide guidance for aircraft anti‐corrosion material selection and outfield maintenance. Based on the shell current distribution, a COMSOL corrosion simulation prediction model was constructed and applied to three types of test parts. The correctness of simulation principle is verified by comparing the galvanic current of simulation and test on each electrode surface of multi‐electrode system. Comparing the simulated potential distribution at 100 µm electrolyte layer with the corrosion morphology after 12 wet–dry corrosion periods, it is found that simulation and test are in good agreement. It is also proved that the 100 µm static liquid film can reflect the corrosion of this kind of wet–dry cycle. Comparing the corrosion depths of different periods at three different points and the simulated corrosion depth with time, it is found that the corrosion depth of the first four periods was larger than the simulated depth, which was less than the simulated value after four periods. The model was applied to the local structural parts of aircraft. Then, corrosion position and corrosion area were predicted. The results were compared with the accelerated test results to verify the accuracy of the model's prediction of structural parts. At the same time, the corrosion depth of the structural parts was also predicted.

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Study on the galvanic corrosion of aluminum alloy single bolted lap joints in simulated atmospheres

Cited by 8 publications

References 13 publications

Galvanic corrosion behavior and numerical simulation of 5083 aluminum alloy and Q235 steel in 3.5% NaCl solution

Galvanic corrosion behavior and numerical simulation of 5083 aluminum alloy and Q235 steel in 3.5% NaCl solution

Identification of multi-bolt head corrosion using linear and nonlinear shapelet-based acousto-ultrasonic methods

A method of atmospheric corrosion prediction for aircraft structure

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