A comparative study on the critical pitting criteria of a super ferritic stainless steel at different temperatures in chloride or bromide solution

Lei, Longlin; Sun, Yangting; Zheng, Kangkang; Wang, Xiangyu; He, Peigang; Liu, Yuanyuan; Yao, Qiong; Yin, Limeng; Wan, Yiting; Li, Jin; Jiang, Yiming

doi:10.1016/j.corsci.2021.109311

Cited by 24 publications

(4 citation statements)

References 61 publications

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“…Super ferritic stainless steel (SFSS) is extensively utilized in heat exchange equipment using various water sources as a cooling medium, including seawater, because of its excellent corrosion resistance, high thermal conductivity, low coefficient of thermal expansion, low production cost, and nickel savings [1][2][3][4]. Nonetheless, prolonged exposure to harsh environments such as seawater may result in hydrogen embrittlement (HE) [5].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Embrittlement of 27Cr−4Mo−2Ni Super Ferritic Stainless Steel

Yang,

Nie,

Zhang

et al. 2024

Materials

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The effect of hydrogen content on the deformation and fracture behavior of 27Cr−4Mo−2Ni super ferritic stainless steel (SFSS) was investigated in this study. It was shown that the plasticity and yield strength of SFSS were very susceptible to hydrogen content. The introduction of hydrogen led to a significant decrease in elongation and a concurrent increase in yield strength. Nevertheless, a critical threshold was identified in the elongation reduction, after which the elongation remained approximately constant even with more hydrogen introduced, while the yield strength exhibited a monotonic increase with increasing hydrogen content within the experimental range, attributed to the pinning effect of the hydrogen Cottrell atmosphere on dislocations. Furthermore, the hydrogen-charged SFSS shows an apparent drop in flow stress after upper yielding and a reduced work hardening rate during the subsequent plastic deformation. The more hydrogen is charged, the more the flow stress drops, and the lower the work hardening rate becomes.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Embrittlement of 27Cr−4Mo−2Ni Super Ferritic Stainless Steel

Yang,

Nie,

Zhang

et al. 2024

Materials

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“…Cui et al [ 29 ] established that temperature caused a decrease in the protection of passive properties in 2507 super duplex stainless steel by altering the doping concentrations and structure. Lei et al [ 30 ] reported that pitting corrosion on S44660 stainless steel was more likely to occur in bromide solution than in chloride solution at low temperature. The corrosion behavior of EHEA is greatly affected by temperature, as with stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of the AlCoCrFeNi2.1 Eutectic High-Entropy Alloy in Chloride-Containing Sulfuric Acid Solutions at Different Temperatures

Song

Zhang

et al. 2022

Materials

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In this work, the influence of temperature on the corrosion behavior of AlCoCrFeNi2.1 eutectic high-entropy alloy in a chloride-containing sulfuric acid solution was investigated using electrochemical measurement, X-ray photoelectron spectroscopy, and scanning electron microscopy. Results show that the passive film of AlCoCrFeNi2.1 is stable in chloride-containing sulfuric acid solutions at low temperatures, while an unstable film forms on the alloy at high temperatures. Furthermore, temperature changes the proportion of hydroxide and oxide in Fe and Cr, but it has no noticeable effect on Al and Ni, which is a significant factor on the passive behavior. L12 phase exhibits good corrosion resistance at different temperatures. Pitting occurred on B2 phase in the chloride-containing sulfuric acid solution at a low temperature of 5 °C, while pitting and dissolution take place on AlCoCrFeNi2.1 in the acid solution at room temperature and above.

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“…Stainless steels are highly regarded in iconic buildings for their excellent performance in terms of structure, aesthetics, corrosion resistance, durability, and more [3][4][5][6]. Compared with austenitic stainless steels (ASS) and duplex stainless steels (DSS), super-ferritic stainless steels (SFSS), originally developed in 1970 for chloride-containing media, have a lower coe cient of thermal expansion, lower Ni element content, and lower production cost features [7][8][9]. Besides, the SFSS also showed a good corrosion resistance performance in an environment that contains chloride ions compared with the heat-resistant martensitic stainless steels (MSS) [2,3,6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Super-Ferritic Stainless Steels Used for Marine Construction after Fire Exposure

Shen

2022

Advances in Materials Science and Engineering

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In this paper, the super-ferritic stainless steels (SFSSs) were simulating treated in a fire accident, and their mechanical properties and corrosion performance before/after fire exposure were studied. The experimental results demonstrated that SFSSs have a good combination property with the tensile strength, total elongation, and corrosion rate in FeCl3 solution of ∼600 MPa, ∼22.5%, and 0.03 mm/a. After fire exposure, the mechanical properties and corrosion performance were affected based on the exposure temperature due to the precipitation of intermetallic compounds. When the fire exposure temperature was 700–800°C, the plasticity was exasperated and the value decreased to only 1.5% at the condition of 800°C × 4 h due to the bulk σ-phase precipitation at grain boundaries. Meanwhile, the brittle fracture patterns emerged, and the corrosion rate in FeCl3 solution increased to 0.4 mm/a. When fire exposure takes place at 600°C for less than 4 h, the mechanical properties and the corrosion performance were little affected. Thus, it was possible to use SFSSs in marine environments.

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A comparative study on the critical pitting criteria of a super ferritic stainless steel at different temperatures in chloride or bromide solution

Cited by 24 publications

References 61 publications

Hydrogen Embrittlement of 27Cr−4Mo−2Ni Super Ferritic Stainless Steel

Hydrogen Embrittlement of 27Cr−4Mo−2Ni Super Ferritic Stainless Steel

Corrosion Behavior of the AlCoCrFeNi2.1 Eutectic High-Entropy Alloy in Chloride-Containing Sulfuric Acid Solutions at Different Temperatures

Microstructure and Properties of Super-Ferritic Stainless Steels Used for Marine Construction after Fire Exposure

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