Influence of Inclusion on Corrosion Behavior of E36 Grade Low-Alloy Steel in Cargo Oil Tank Bottom Plate Environment

Wu, Huibin; Liang, Juhua; Tang, Di; Liu, Xiaotong; Zhang, Pengcheng; Yue, Yuanjie

doi:10.1016/s1006-706x(14)60177-1

Cited by 13 publications

(3 citation statements)

References 13 publications

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“…Thus, it can be assumed that these inclusions will exhibit higher corrosion activity compared to inclusions in Steel 3 based on the amount of aluminate calcium present. With respect to inclusion, it was suggested that the activation of the matrix dissolution around the inclusion could be related to the difference in its chemical composition and the rest of the matrix; this was because of segregation and/or formation of heterogeneity of the chemical composition during the crystallization or subsequent reworking of the steel (Shibaeva et al, 2014;Wu et al, 2014;Costa e Silva, 2019).…”

Section: Distribution Of Elements Around the Inclusionsmentioning

confidence: 99%

Influence of Non-metallic Inclusions on Corrosive Properties of Polar Steel

Sun

2021

Front. Mater.

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Polar steel requires excellent toughness and corrosion resistance for breaking icy surfaces in low-temperature seawater environments. In this study, the effect of inclusions on the corrosion resistance of polar steel was examined. In the experiments conducted, the composition and morphology of the inclusions in steel were controlled using different deoxidation methods during steel refining. The morphology and composition of the corrosion-resistant active inclusions were analyzed using scanning electron microscopy and energy dispersive spectroscopy. The corrosion resistance of polar steel was determined by measuring the saturation current density of the anodic dissolution of steel in a corrosive medium via an electrochemical method. The corrosion resistance under simulated seawater was also investigated under laboratory conditions. It was found that as the ratio of Al/Mg approaches the stoichiometric composition of the spinel (2.3–2.5), the inclusions become less active; as the ratio increases further, the corrosion-resistant activity increases due to the formation of MgAl2O4⋅CaO complexes, leading to an increase in local stress around the inclusions. If steel is deoxidized with Zr–Ti, small Zr–Ti complex oxides form in the steel, providing nucleation particles for the precipitation of spheroidized and uniformly distributed MnS. Therefore, steel deoxidized with Zr–Ti has better seawater corrosion resistance than Al-deoxidized steel.

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Section: Distribution Of Elements Around the Inclusionsmentioning

confidence: 99%

Influence of Non-metallic Inclusions on Corrosive Properties of Polar Steel

Sun

2021

Front. Mater.

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“…Also, once it starts, the rapid propagation speed will give birth to unanticipated failure ranging from mild to catastrophic. Accordingly, imperceptible destructive localized corrosion is used to be conceivable as a likely culprit for the collapse of most metal-based civilization [10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

A critical review of the recent advances in inclusion-triggered localized corrosion in steel

et al. 2022

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Localized corrosion triggered by inclusions is prone to metallic material failure. Except for chemical dissolution of some special inclusions, the principle of galvanic coupling is the most acceptable theory to explain the above corrosion damage mechanism over the past decades. Still, controversies continue to present, in particular, mounting recent evidence obtained by advanced technologies emphasizes the limitations of previous entrenched idea and discloses unexpected results. Here, we review relevant recent studies and carefully summarize their similarities and differences to reduce the knowledge gap between inclusion-triggered localized corrosion and material design, whilst the source of typical inclusions is treated and discussed.

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“…[13][14][15][16][17] As well established in the literature, large nonmetallic inclusions deteriorate the impact toughness of steel, [18][19][20] along with other essential steel properties, such as fatigue life, [21,22] and corrosion resistance. [23,24] Consequently, the presence of large-sized rare-earth inclusions significantly diminishes the beneficial effect of rare-earth treatment on the impact toughness of duplex stainless steel. Generally, the formation of large-sized rare-earth inclusions may be attributed to two principal factors.…”

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confidence: 99%

The Effect of Ca Pretreatment on the Characteristics of Rare‐Earth Nonmetallic Inclusions in Super‐Duplex Stainless Steel

Zheng,

Ren,

Chen

et al. 2024

steel research int.

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Rare‐earth treatment enhances steel properties. Nevertheless, this beneficial effect can be counterbalanced by the formation of large‐sized rare‐earth inclusions. To refine and spheroidize these inclusions, Ca pretreatment is employed between Al deoxidation and Ce treatment stages for super‐duplex stainless steel 2507 at 1580 °C, using a vertical tube furnace. A systematic analysis is performed to compare the characteristics of nonmetallic inclusions between the Ca‐untreated and Ca‐treated tests. Prior to Ce addition, Ca pretreatment transforms irregular and clustered MgO–Al2O3 spinel inclusions into spherical CaO–MgO–Al2O3 inclusions. Additionally, Ca pretreatment significantly reduces mean diameter of the inclusions from 2.36 ± 0.54 to 1.27 ± 0.47 μm. After Ce addition, rare‐earth inclusions appear near‐spherical with few clustered inclusions in Ca pretreatment case. Conversely, the absence of Ca treatment results in numerous clustered inclusions, thereby yielding significantly larger rare‐earth inclusions, measuring 2.75 ± 1.66 μm compared to 1.99 ± 1.09 μm. CaO component in CaO–MgO–Al2O3 inclusions is largely reduced by Ce. Consequently, Ca pretreatment only yields slight alterations in chemical composition of rare‐earth inclusions. Ce in situ reduces parent inclusions, initiating from the periphery and progressing toward the center. Therefore, the size and morphology of final rare‐earth inclusions are largely inherited from parent inclusions.

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Influence of Inclusion on Corrosion Behavior of E36 Grade Low-Alloy Steel in Cargo Oil Tank Bottom Plate Environment

Cited by 13 publications

References 13 publications

Influence of Non-metallic Inclusions on Corrosive Properties of Polar Steel

Influence of Non-metallic Inclusions on Corrosive Properties of Polar Steel

A critical review of the recent advances in inclusion-triggered localized corrosion in steel

The Effect of Ca Pretreatment on the Characteristics of Rare‐Earth Nonmetallic Inclusions in Super‐Duplex Stainless Steel

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