Corrosion behaviour of aluminium alloys in deep-sea environment: A review and the KM3NeT test results

Canepa, Elisa; Stifanese, Roberto; Merotto, Lorenzo; Traverso, P.

doi:10.1016/j.marstruc.2018.02.006

Cited by 82 publications

(24 citation statements)

References 39 publications

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“…In particular, 5083 aluminum alloy is one typical 5xxx series aluminum alloy, in which Mg is the main alloying element to improve the corrosion resistance. Exceptional corrosion resistance of 5083-H111 is widely known and has also been confirmed in the deep-sea environment [1]. It should also be noted that in complex structures of marine vessel construction, several connections are an important issue due to the strength and durability of the structure [2][3][4].…”

Section: Introductionmentioning

confidence: 89%

Microstructure and Low Cycle Fatigue Properties of AA5083 H111 Friction Stir Welded Joint

et al. 2020

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The present paper aims to analyze the microstructure, microhardness, tensile properties, and low cycle fatigue (LCF) behavior of friction stir welded (FSW) butt joints. The material used in this study was the 5 mm thick 5083 H111 aluminum alloy sheet. Butt joints of AA 5083 H111 were manufactured at different operating parameters of the FSW process. The effect of the welding parameters on microstructure, microhardness, and tensile properties was investigated. Based on microstructure analysis and strength tests, the most favorable parameters of the FSW process were settled on the point of view of weld quality. Then, LCF tests of base material and friction stir welded specimens made of 5083 H111 were carried out for the examined welded samples under selected friction stir welding parameters. The process of low-cycle fatigue of 5083 H111 aluminum alloy was characterized by cyclic hardening for both: base material and FSW joint. It was revealed by a decrease in the width of the hysteresis loop with the simultaneous significant increase in the values of the range of stress. It was determined that fatigue cracks are initiated by cyclic slip deformation due to local stress concentration from the surface in the corner of the samples for the base material and the heat-affected zone for FSW joints. For all tested strain amplitudes, the fatigue crack propagation region is characterized by the presence of fatigue striation with secondary cracks.

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Section: Introductionmentioning

confidence: 89%

Microstructure and Low Cycle Fatigue Properties of AA5083 H111 Friction Stir Welded Joint

et al. 2020

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“…In this case, the edge zone of the droplet under the end surface of the syringe “mouth wall” would be oxygen‐rich, containing more oxygen than the droplet central area inside the “mouth”. According to the principle of crevice corrosion, the crevice corrosion in the droplet edge zone between the end surface of the “mouth wall” and the sample surface would be suppressed in this case because of the enrichment of oxygen there, while pitting corrosion would preferentially occur on the surface area exposed to the solution in the droplet central area inside the syringe “mouth” due to the relative depletion of oxygen there. Therefore, this syringe electrolyte cell would ensure pitting corrosion to occur on the sample surface, preferentially in the droplet central area in the syringe “mouth” and the crevice corrosion in the droplet edge zone under the end surface of the “mouth wall” to be suppressed.…”

Section: Methodsmentioning

confidence: 99%

A double‐mode cell to measure pitting and crevice corrosion

Shen

Song

Zheng

et al. 2019

Materials & Corrosion

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Pitting corrosion and crevice corrosion of passivated steels were measured by using a double-mode syringe electrolyte cell built on an environment chamber.The setup, when set in noncontact mode, could measure pitting potentials and critical temperatures, and crevice corrosion potentials if in contact mode. It could be employed to distinguish the pitting and crevice corrosion damage of reinforcing steel in concrete. K E Y W O R D Screvice corrosion, electrochemical measurement, passivity, pitting corrosion

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“…This is by Sasono et al [11] which states that Al 7075 T6 tends to be susceptible to local corrosion, such as pitting, intergranular corrosion, or peeling skin. In the results of the study in [12], the corrosion that occurred on Al 7075 T651 has a relationship with the Cu-rich intergranular phase, which increases local corrosion susceptibility. In testing using river water testing media, no significant changes were seen on the surface of the propeller.…”

Section: Macro Photo and Microscope Opticmentioning

confidence: 97%

The Corrosion Erossion of Ship Propeller Al 7075 Produced by Gravity Sand Casting

Rante

Syahid

Sutresman

2019

EPI-IJE

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Propeller is one of the important components of ships and boats that function as motor or boat propulsion. The mechanical properties required in propeller material are high toughness, easy to cast, and good engine capability, as well as good resistance to corrosion and erosion. One of the aluminum alloys that have been widely used in major vessels in propeller systems is the Nickel-aluminum-bronze (NAB) alloy because it has an excellent combination of mechanical properties and corrosion-erosion resistance. Another type of aluminum alloy that is widely used as a machining component is the Al 7075 T651 because it has the highest strength among other aluminum alloys. The mechanical properties of the Al 7075 T651 are directly proportional to the erosion resistance of the propeller which agrees with the pot tester porridge. The higher the value of the erosion propeller failure that occurs also increases with increasing testing rotational speed. For corrosion, a propeller with air testing media at a speed of 1000 rpm which results in significant corrosion products. Keywords: Al 7075 T651, Slurry Pot Tester, Corrosion Erosion

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Corrosion behaviour of aluminium alloys in deep-sea environment: A review and the KM3NeT test results

Cited by 82 publications

References 39 publications

Microstructure and Low Cycle Fatigue Properties of AA5083 H111 Friction Stir Welded Joint

Microstructure and Low Cycle Fatigue Properties of AA5083 H111 Friction Stir Welded Joint

A double‐mode cell to measure pitting and crevice corrosion

The Corrosion Erossion of Ship Propeller Al 7075 Produced by Gravity Sand Casting

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