Long-term marine immersion corrosion of welded ABS grade steels

Chaves, Igor A.; Melchers, Robert E.; Sterjovski, Zoran; Rosen, J.

doi:10.1080/1478422x.2021.2015823

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…E690 high-strength steel [ 1 ] is commonly used in pile leg materials and gears of marine platforms. The complex marine environment can lead to various failure forms of equipment [ 2 , 3 ], among which corrosion [ 4 , 5 ] is the most consequential. Laser shock peening [ 6 , 7 ] is a surface-strengthening process developed in the 1960s, which uses high-power laser irradiation to induce plasma shock waves to act on the target surface.…”

Section: Introductionmentioning

confidence: 99%

Laser Shock Peening Improves the Corrosion Resistance of an E690 High-Strength Steel Cladding Layer

et al. 2023

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To investigate the effect of laser shock peening parameters on the corrosion resistance of an E690 high-strength steel cladding layer, NVE690 high-strength steel powder was selected for testing at various power densities of pulse lasers. The surface roughness and residual stress of the treated samples were measured, and the microstructure morphology of the sample surface was observed. The electrochemical corrosion tests were conducted with an electrochemical workstation to measure the electrometer polarization, obtain the impedance curve, and observe the electrochemical corrosion. As the laser power density increased, the surface grains of the E690 high-strength steel cladding layer continued to refine until nanocrystals formed, and the residual compressive stress on the surface increased. The residual compressive stress on the surface rendered the passivation film stable and dense; furthermore, the refinement of surface grains inhibited the initiation and propagation of microcracks. The positive shift of the corrosion potential increased from −1.004 to −0.771 V, the corrosion current density decreased from 114.5 to 5.41 μA/cm2, the radius of the impedance spectrum curve increased, and the peeling pits, as well as corrosion micropores on the surface, gradually became no longer evident after electrochemical corrosion. After laser shock treatment, the corrosion resistance of the cladding layer sample was substantially improved.

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Section: Introductionmentioning

confidence: 99%

Laser Shock Peening Improves the Corrosion Resistance of an E690 High-Strength Steel Cladding Layer

et al. 2023

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Predicting corrosion for life estimation of ocean and coastal steel infrastructure

Melchers,

Jeffrey,

Chaves

et al. 2024

Materials & Corrosion

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Physical infrastructure in coastal and offshore locations often is constructed from mild and low alloy steels. These are prone to marine corrosion even with the application of protective coatings and cathodic protection. Particularly for high‐value assets such as energy facilities (wind farms, oil and gas production and subsea pipelines), the prediction of their safe and economic life is of much interest. Herein, a review is given of the modern development of models for the prediction of long‐term marine corrosion of steel exposed to various marine environments. These include immersion, tidal, splash and atmospheric zones and contact with sands and soils. The effects of temperature and water pollution are especially important, as is the ability of the steels or irons to form protective corrosion products. Comments are made also about other alloys such as copper‐nickels and aluminium. All show that corrosion, including pitting corrosion, develops with increased exposure time in a bimodal manner. The reasons for such behaviour are considered, together with the practical implications, important for containment structures such as pipelines, tanks and floating offshore energy platforms.

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Corrosion Processes of Steel-Hulled Potentially Polluting Wrecks

Glover

2024

SpringerBriefs in Archaeology

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Submerged metals are continuously affected by the chemical processes of corrosion, the destructive degradation of metal by chemical or electrochemical reactions within the marine environment (Valenca et al., 2022:2–3; Venugopal, 1994:35). Over time, metal ions at anodic sites defuse into electrolytic solutions from the oxidising reactions occurring at cathodic sites, causing the creation of corrosion byproducts, like rust on iron, and the loss of structural mass. The different reduction reactions in the microstructures of alloys and the imperfections found within refined materials, like carbon slag in steel, are targeted by this process, essentially reverting the chemically unstable materials back to their more stable original forms (Moore III, 2015:192; MacLeod 2016:90–92). The deterioration of metallic shipwreck hulls has become a growing concern within the field of marine conservation as many of the fuel tankers deliberately targeted in WWII threaten to release trapped fuel and chemical cargoes after nearly eight decades of exposure to a range of corrosive environments (Barrett, 2011:4–5). With the deterioration rate of ship hulls averaging at around ±0.1–0.4 mm of loss per year and the thickness of ship deck plates from the 1940s to the 1960s ranging generally from 1–4 cm in thickness, the window to act on the majority of potentially polluting shipwrecks (PPW) before a catastrophic breach occurs is closing (MacLeod, 2016a:8; Beldowski, 2018:249; Masetti, 2012:33; Masetti & Calder, 2014:139).

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Long-term marine immersion corrosion of welded ABS grade steels

Cited by 5 publications

References 19 publications

Laser Shock Peening Improves the Corrosion Resistance of an E690 High-Strength Steel Cladding Layer

Laser Shock Peening Improves the Corrosion Resistance of an E690 High-Strength Steel Cladding Layer

Predicting corrosion for life estimation of ocean and coastal steel infrastructure

Corrosion Processes of Steel-Hulled Potentially Polluting Wrecks

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