Insight into microstructure, microhardness and corrosion performance of 2205 duplex stainless steel: Effect of plastic pre-strain

Shen, Kuiling; Jiang, Wenchun; Sun, Chi‐Lu; Wan, Yu; Zhao, Weimin; Sun, Jianbo

doi:10.1016/j.corsci.2022.110847

Cited by 18 publications

(4 citation statements)

References 68 publications

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“…The results show that the second phases such as σ, χ, R, π, carbides, and nitrides are precipitated in DSS2205 material during isothermal aging at 300~1000 • C, which seriously affects the performance of dual-phase steel [6,8,[10][11][12]. From the results of this study, it can be seen that when tempering at 750 • C and above for 1 h, the ferrite content of dualphase steel gradually decreases with the increase in temperature, and the σ phase content gradually increases.…”

Section: Analysis and Discussionmentioning

confidence: 99%

“…When the ratio of two phases is close to 1:1, duplex stainless steel exhibits the best comprehensive performance [1][2][3]. After an improper heat treatment (such as sensitization), the two-phase ratio of dual-phase steel will change, and second phases such as σ, χ, carbides, and nitrides will inevitably precipitate at grain boundaries, phase boundaries, and in their vicinities [4][5][6], thus forming a Cr-depleted zone and leading to a certain intergranular corrosion sensitivity in a specific corrosion environment [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Tempering Temperature on Microstructure and Intergranular Corrosion Property of 2205 Duplex Stainless Steel

Luo,

Fang,

Zhang

et al. 2024

Coatings

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The effect of tempering temperature on the microstructure and intergranular corrosion property of 2205 duplex stainless steel (DSS2205) was determined using a boiling acid intergranular corrosion test (boiling 65% nitric acid and 50% sulfuric acid–ferric sulfate), an optical microscope, a transmission electron microscope, and a double-loop electrochemical potentiokinetic reactivation (DL-EPR) test. The results show that the ferrite content of the DSS2205 is about 50% in a specimen close to a solid solution state (1050 °C for 1 h, then water-quenched) when tempered at 675 °C–725 °C for 1 h. As the tempering temperature rises to 750 °C–800 °C for 1 h, the ferrite content drops gradually from 49% to 35%. M23C6, FeCr (σ phase), and Cr2N phases are precipitated when the specimen is tempered at 675°C–800 °C for 1 h. When the tempering temperature rises to 750 °C–800 °C for 1 h, the content and size of σ phase increase significantly. In the boiling acid intergranular corrosion test, when the specimen is tempered at 675 °C–725 °C for 1 h, the corrosion rate is higher than when it is tempered at 750 °C–800 °C for 1 h. In the DL-EPR test, when the specimen is tempered at 675 °C–800 °C for 1 h, the intergranular corrosion sensitivity rises gradually. External polarization is added during the DL-EPR test, and the test principle is different from that of the boiling acid intergranular corrosion test, resulting in a different sensitivity to intergranular corrosion compared to boiling acid intergranular corrosion.

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Section: Analysis and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Tempering Temperature on Microstructure and Intergranular Corrosion Property of 2205 Duplex Stainless Steel

Luo,

Fang,

Zhang

et al. 2024

Coatings

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“…Stainless steels are the most favored steels for SPD processing. Most of the literature confirms an increase in the corrosion resistance of UFG stainless steels regardless of SPD processing (51,57,85,86,87,88) . However, not always the corrosion behavior improves in stainless steels, because it also depends on the process and the nanostructured obtained (30,89) .…”

Section: Stainless Steelmentioning

confidence: 95%

An Overview on the Corrosion Behavior of Steels Processed by Severe Plastic Deformation

Cardonaa

Castillejo

2023

Mater. Trans.

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Ultrafine grained (UFG) and nanostructured steels have gained attention in the last years because of the possibility of improving both strength and ductility, but also because of their potential for improving several properties in metal applications which allows replacing some conventional steels. The refinement of the microstructure obtained through Severe Plastic Deformation (SPD) has allowed for the improvement of mechanical properties and the performing of several studies related to corrosion control, mitigation, and protection. In this review, the corrosion behavior of ultra-fine grained (UFG) steels is presented regarding the existing literature and the microstructural changes produced through different SPD processes. A focus is placed on the importance of the processes for grain refinement and microstructural changes and, therefore, on the corrosion behavior.Keywords: Severe plastic deformation, corrosion behavior, steels Carbon and alloyed steelsCarbon and alloy steels are the most important engineering alloys because they are widely used in many applications. However, they are very susceptible to corrosion environments and require some corrosion control.

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“…The largest value of C f further evidences this finding since C f is inversely proportional to the film thickness. [24][25][26] The HAZ shows the best corrosion resistance, where the R ct and R f are as high as 5.13 × 10 3 and 5.15 × 10 5 Ω cm 2 , respectively. The anticorrosion performance of the WZ sample is quite close to that of the HAZ sample, which is in good agreement with the polarization results.…”

Section: Electrochemical Corrosion Performancementioning

confidence: 99%

Insight into the pitting corrosion behavior of laser‐welded R60702 zirconium alloy in chloride electrolyte

Ren,

Wang,

et al. 2024

Materials & Corrosion

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This work aims to analyze the passivation and pitting corrosion behaviors of laser beam welded R60702 zirconium alloy in neutral and acidic chloride‐containing electrolytes. Potentiodynamic polarization and electrochemical impedance spectroscopy measurements are carried out to investigate the electrochemical performance of the welding joint. Scanning electron microscope, X‐ray diffraction, and three‐dimensional profile digital microscope are utilized to reveal the microstructures and corrosion morphologies. The electrochemical results show that the heat‐affected zone (HAZ) and weld zone have nearly equal corrosion performance, and both of them are more corrosion‐resistant than the base metal. The corrosion morphologies suggest that the HAZ has the lowest sensitivity to pitting corrosion. Moreover, it is unraveled that, in chloride‐containing electrolytes, the quantity and distribution of Zr(Fe,Cr)2 particle phases are the main factors that determine the different corrosion performances of the welding joint.

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Insight into microstructure, microhardness and corrosion performance of 2205 duplex stainless steel: Effect of plastic pre-strain

Cited by 18 publications

References 68 publications

Effect of Tempering Temperature on Microstructure and Intergranular Corrosion Property of 2205 Duplex Stainless Steel

Effect of Tempering Temperature on Microstructure and Intergranular Corrosion Property of 2205 Duplex Stainless Steel

An Overview on the Corrosion Behavior of Steels Processed by Severe Plastic Deformation

Insight into the pitting corrosion behavior of laser‐welded R60702 zirconium alloy in chloride electrolyte

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