On the Global and Localised Corrosion Behaviour of the AA2524-T3 Aluminium Alloy Used as Aircraft Fuselage Skin

Moreto, Jéferson Aparecido; Rossino, Luciana Sgarbi; Filho, Waldek Wladimir Bose; Marino, Cláudia Eliana Bruno; Ferreira, Miguel da Conceição; Taryba, Maryna; Fernandes, João S.

doi:10.1590/1980-5373-mr-2018-0280

Cited by 13 publications

(8 citation statements)

References 27 publications

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“…The EIS results for both alloys were fitted with the two/three-time constants equivalent electric circuits (EEC) shown in Figure 7. These ECC have been established in the literature on aluminium alloys EIS fittings and were also tested in previous works from our research group [9,[44][45][46]. Table 4 presents the parameters obtained from the equivalent electrical circuit fitted to the AA2024-T3 and AA2524-T3 EIS data.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Corrosion Resistance of the AA2524-T3 and the AA2024-T3

Queiroz

Terada

Bugarin

et al. 2021

Metals

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The 2XXX Al alloys are characterized by their superior mechanical properties resulting from alloying elements and precipitation hardening treatments. The AA2524-T3 alloy was developed to replace the AA2024-T3 alloy in the aerospace industry. However, both alloys present many intermetallic particles (IMCs) in their microstructure, and this is the main reason for their high susceptibility to localized corrosion (such as pitting and stress corrosion cracking). Despite the similarities between these alloys (e.g., chemical composition and type of intermetallics) the literature comparing their properties is scarce and focuses mainly on their mechanical properties, not their corrosion resistances. In this investigation, the corrosion resistance of the AA2524-T3 alloy was compared to the AA2024-T3 alloy. The microstructure of both alloys was analyzed by Scanning Electron Microscopy before and after immersion in the test electrolyte, and the number and area fraction of intermetallics of each alloy was determined. The corrosion resistance of both alloys was monitored as a function of exposure time by electrochemical impedance spectroscopy and the results were fitted using electrical equivalent circuits. The AA2524-T3 alloy presented not only higher impedance values but also less corroded areas than the AA2024-T3 alloy.

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Section: Resultsmentioning

confidence: 99%

Comparison of Corrosion Resistance of the AA2524-T3 and the AA2024-T3

Queiroz

Terada

Bugarin

et al. 2021

Metals

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“…Its alloys have low weight and excellent mechanical properties. It is the reason for their use in the manufacturing of car bodies [10,11], ships [12,13], aircraft and space shuttles components [14]. Aluminum magnesium-3 (AlMg3) has a high resistance to corrosion in salted medium and is commonly used in the manufacturing of ships, fuel tanks and chemical agents containers.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Defects Analyses Using High-Speed Imaging during Aluminum Magnesium Alloy Laser Welding

Mihai

Chioibasu

Mahmood

et al. 2021

Metals

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In this study a continuous wave Ytterbium-doped Yttrium Aluminum Garnet (Yb: YAG) disk laser has been used for welding of AlMg3 casted alloy. A high-speed imaging camera has been employed to record hot vapor plume features during the process. The purpose was to identify a mechanism of pores detection in real-time based on correlations between metallographic analyses and area/intensity of the hot vapor in various locations of the samples. The pores formation and especially the position of these pores had to be kept under control in order to weld thick samples. Based on the characterization of the hot vapor, it has been found that the increase of the vapor area that exceeded a threshold value (18.5 ± 1 mm2) was a sign of pores formation within the weld seam. For identification of the pores’ locations during welding, the monitored element was the hot vapor intensity. The hot vapor core spots having a grayscale level reaching 255 was associated with the formation of a local pore. These findings have been devised based on correlation between pores placement in welds cross-section microscopy images and the hot vapor plume features in those respective positions.

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“…Changing the grain scale of metals from micro to nanocrystalline microstructure (< 100 nm) to increase the degree volume fraction of grain boundaries is additionally found to improve the physical, chemical and mechanical properties of those materials. Ultrafine-grained materials with nanoscale grain are one of the necessary targets of nanomaterial production in recent decades [15,16,17]. Completely different Nano-Metals-Phosphate is process alloy technique that's suitable for spectrum line.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behaviour of Passive Layer Growth by Controlling Additives of Nano-Metals-Phosphate to Pure Aluminum

Hussein

kahdim

Atiyah

2020

DJES

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This study investigates how microstructure and chemistry effects by Nano-Metal-Phosphate and the kinetics of growth passive layer and passivity breakdown. Additionally, the passive layer germination behavior on aluminum alloy 1050 with anticorrosive properties. The passive layer is an alloying method which allows an aluminum oxide to germinate. Morphologically and structurally, the aluminum oxide films were characterized using microscopy analyzes and XRD analysis. Results indicated that the reinforcements are well distributed and the grin size is downy. Corrosion behavior tested by Cyclic polarization exam and done at room temperature in (3.5 per cent NaCl) solution. The reinforcement increased the hardness for processed aluminum from Hv81.1 to HV=120.492 as castings. The parameter Nano-Metal-Phosphate has attenuated the current density of corrosion (7.15μA / cm2) compared to the as-cast sample results.

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On the Global and Localised Corrosion Behaviour of the AA2524-T3 Aluminium Alloy Used as Aircraft Fuselage Skin

Cited by 13 publications

References 27 publications

Comparison of Corrosion Resistance of the AA2524-T3 and the AA2024-T3

Comparison of Corrosion Resistance of the AA2524-T3 and the AA2024-T3

Real-Time Defects Analyses Using High-Speed Imaging during Aluminum Magnesium Alloy Laser Welding

Corrosion Behaviour of Passive Layer Growth by Controlling Additives of Nano-Metals-Phosphate to Pure Aluminum

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