Pitting corrosion resistance of sensitized type 2205 duplex stainless steel in hot concentrated seawater

Zeng, Hongtao; Yang, Yong; Xu, Ronghai; Xin, Sensen; Li, Moucheng

doi:10.1007/s10008-019-04372-9

Cited by 11 publications

(7 citation statements)

References 56 publications

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“…The decrease in corrosion resistance is directly attributed to the formation of the sigma phase, as reported in previous work [49][50][51]. However, the corrosion performance of microstructures containing a secondary austenite with a decrease in corrosion resistance has been reported in some studies [52].…”

Section: Electrochemical Corrosion Testssupporting

confidence: 52%

The Effect of Microstructural Changes on Mechanical and Electrochemical Corrosion Properties of Duplex Stainless Steel Aged for Short Periods

et al. 2020

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This work reports the effects of crystallographic changes due to the secondary phases, in particular sigma (σ), on the mechanical properties and electrochemical behavior of thermally aged duplex stainless steel (DSS). Structural, morphological, mechanical, and electrochemical characterizations were performed. Sigma phase content increased with increasing aging treatment time. It had a lamellar-like shape, as observed by electron backscatter diffractometry (EBSD). Its presence directly damaged mechanical properties. The corrosion assessment included electrochemical impedance spectroscopy (EIS) in 1 M NaCl solution at temperatures of 25, 40, and 65 °C. EIS results demonstrate that an increase in the σ phase content decreased the corrosion resistance (21.1–0.8, 3.5–0.3, and 3.1–0.2 kΩ cm2 at 25, 40, and 60 °C, respectively).

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Section: Electrochemical Corrosion Testssupporting

confidence: 52%

The Effect of Microstructural Changes on Mechanical and Electrochemical Corrosion Properties of Duplex Stainless Steel Aged for Short Periods

et al. 2020

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Section: Introductionmentioning

confidence: 99%

“…The thermal treatment of solubilization aims at adjusting the volumetric fractions between the phases α and γ, by the growth of the austenite grains, and at solubilizing intermetallic phases present in steel, such as sigma (σ), chi (χ) and alpha line (α') (Örnek & Engelberg, 2015, Sáenz et al, 2020, Zeng, Yang, Xu, Xin & Li, 2019, Zhang et al, 2017. The thermal treatment of solubilization is usually performed between 1000-1200°C, followed by cooling in water, to avoid the precipitation of undesirable intermetallic phases (Arturo, Hugo, Rafael, Egberto & Antonio, 2015, Majid & Shahi, 2020, Sáenz et al, 2020, Zeng et al, 2019. The thermal treatment of aging aims at promoting the precipitation of intermetallic phases such as α', σ and χ, and it can be performed after the thermal treatment of solubilization, for the steel to present only the desired phases according to the application (Berecz, Fazakas, Mészáros & Sajó, 2015, Chail & Kangas, 2016, Cronemberger et al, 2014, Cronemberger, M. E. R., Nakamatsu, S., Rovere, C. A. D., Kuri, S. E. & Mariano, N. A., 2015.…”

Section: Introductionmentioning

confidence: 99%

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Temperature and time effect of thermal aging treatment on microstructure and corrosion resistance of UNS S31803 duplex stainless steel

Dainezi

Borges

Sousa

et al. 2021

RSD

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Duplex stainless steels correspond to a class of steel in which the microstructure is composed basically by the phases ferrite and austenite. Given the metastable character of ferrite, associated phase transformations can occur during thermal treatments, which can lead to a reduction in corrosion resistance. Therefore, the aim of this work was to evaluate the influence of the solution-treated at 1100°C for 30min and aging at 500 and 600°C for 1, 3 and 12h, on the microstructure and corrosion resistance of DSS UNS S31803. The steels were characterized by SEM, EDS, XRD, hardness, microhardness and thermal analysis. The steels aged at 500°C for 1h presented the phase alpha line dispersed in the ferrite, and the steels aged at 600°C for 12h presented the phases alpha line, sigma and chi. In the assays of double cycle potentiodynamic reactivation in solution of 0.5M H2SO4 and 0.01M KSNC, it was observed that no sensitization occurred. Furthermore, in the tests of cyclic potentiodynamic polarization, in 3.5% NaCl solution, it was verified that the precipitation of the alpha line phase did not alter corrosion resistance; nevertheless, the sigma phase reduced corrosion resistance.

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“…However, marine engineering materials are highly susceptible to corrosion in the complex marine environment, which seriously affects the safety and stable operation of marine equipment [4]- [5]. The marine environment is a harsh corrosive environment, and its environmental characteristics are highlighted in the "three highs and one strong": high temperature, high humidity, high salinity, and strong sunlight [6]- [7]. Therefore, it is very corrosive, and the flow of seawater causes an impact on metal materials.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of corrosion resistance of marine engineering materials under function integral algorithm

Zhang,

Liu

2023

Applied Mathematics and Nonlinear Sciences

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Significant corrosion problems in materials related to marine engineering projects are bound to be a threat to overall operational safety and reliability. This paper investigates the influence of corrosion time on the material product film performance and its corrosion resistance, combined with the function integral algorithm. The gray matrix transform, image binarization, and wavelet transform of the function integral algorithm are used to establish the corrosion damage image recognition model and quantify the microscopic characteristics of corrosion damage based on the corrosion morphological features. Through the corrosion damage image recognition model, evaluation and analysis of common marine engineering materials 2205 duplex stainless steel and Q420 steel in chloride ion (Cl−). Test results show that: chloride ion on 2205 duplex stainless steel corrosion resistance 17.89μA cm−2 was the critical point, the higher the concentration played a suppressive effect. Chloride ions on Q420 steel corrosion resistance in lower solutions below 2.23μA cm−2 concentration, Q420 surface product film has a certain protective effect on the substrate. The corrosion characteristic value evaluation results based on the function integration algorithm are consistent with the electrochemical test results, so the evaluation model established in this paper can effectively evaluate the corrosion resistance of the material.

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Pitting corrosion resistance of sensitized type 2205 duplex stainless steel in hot concentrated seawater

Cited by 11 publications

References 56 publications

The Effect of Microstructural Changes on Mechanical and Electrochemical Corrosion Properties of Duplex Stainless Steel Aged for Short Periods

The Effect of Microstructural Changes on Mechanical and Electrochemical Corrosion Properties of Duplex Stainless Steel Aged for Short Periods

Temperature and time effect of thermal aging treatment on microstructure and corrosion resistance of UNS S31803 duplex stainless steel

Evaluation of corrosion resistance of marine engineering materials under function integral algorithm

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