The Influence of Porosity on Corrosion Attack of Austenitic Stainless Steel

Abdullah, Zulaikha; Ismail, Azzura; Ahmad, Sufizar

doi:10.1088/1742-6596/914/1/012013

Cited by 5 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to figure 10 and table 6, it can be seen that there is a tendency to pitting in all specimens since E rp is more negative than E pit for them [75,83]. Meanwhile, positive hysteresis (reverse scan current density is greater than that for the forward scan) is observed in the curves of the specimens, which can be a sign of the susceptibility to pitting corrosion and initiation of pits in the transpassive region [78,80]. On the other hand, the specimens were able to repassivate after passivity breakdown, since in their curves, E rp locates inside the passive region and is nobler than E corr .…”

Section: Potentiodynamic Polarization Testmentioning

confidence: 88%

“…Overall, there is a good correlation between the values of corrosion current density from polarization test and the corrosion resistance of the impedance test. Pitting or breakdown potential (E pit ) is the potential at which the resistance of the passive layer is broken and pits initiate and is accompanied by a sharp and sudden increase in current density [76][77][78][79][80]. Initiation of pitting occurs due to the absorption of Cl − ions on the surface of the passive layer, which is followed by passivity breakdown that happens rapidly on a very small scale [76,77].…”

Section: Potentiodynamic Polarization Testmentioning

confidence: 99%

See 1 more Smart Citation

The effect of microstructural and texture evolutions during thermomechanical treatment on corrosion resistance of 310s austenitic stainless steel

Heidari¹,

Eskandari²,

Yeganeh³

2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

In this study, the evolution of the microstructure and texture during thermomechanical treatment and its effect on corrosion properties of 310s austenitic stainless steel were investigated. This stainless steel was cryo-rolled at 50 and 90% thickness reductions, and then the 90% cryo-rolled sample was annealed at 750 °C for 5 and 30 minutes. SEM and optical microscope images were used to examine the microstructure of the samples. Fritoscopy test was also used to calculate the volume fraction of the martensite phase. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and cyclic potentiodynamic polarization tests were performed in the 3.5 wt. % NaCl solution to investigate the corrosion behavior of the studied steel. The results showed that the cryo-rolling process caused the reduction of grain size, texture strengthening and transformation of austenite to strain-induced αʹ-martensite phase. Decreasing grain size and increasing texture components containing dense planes are beneficial factors and the formation of the αʹ-martensite phase is a harmful factor for corrosion resistance. It was observed that annealing at 750 °C for 30 min caused the grain growth and texture weakening, while a favorable condition is developed in the annealed sample for 5 min. After 90% cryo-rolling and subsequent annealing at 750 °C for 5 min, the corrosion resistance was significantly improved compared to the as-received sample and reached 37 kΩ.cm2. Formation of the sub-micron microstructure along with the high volume fraction of Brass and Goss texture components were the main reasons for improving corrosion resistance at 750 °C-5 min.

show abstract

Section: Potentiodynamic Polarization Testmentioning

confidence: 88%

Section: Potentiodynamic Polarization Testmentioning

confidence: 99%

The effect of microstructural and texture evolutions during thermomechanical treatment on corrosion resistance of 310s austenitic stainless steel

Heidari¹,

Eskandari²,

Yeganeh³

2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

show abstract

Fabrication of porous CoCrFeMnNi high entropy alloy using binder jetting additive manufacturing

Zhu

Wang

et al. 2020

Additive Manufacturing

View full text Add to dashboard Cite

Investigating molybdenum’s sulphur scavenging ability for MoS2 formation in preventing pitting corrosion of stainless steels

Kuah,

Blackwood

2023

npj Mater Degrad

View full text Add to dashboard Cite

The addition of Mo enhances pitting corrosion resistance in 304L stainless steel. However, there is no consensus on the underlying mechanism. One possible explanation is that molybdenum converts sulfide to stable MoS2. This study investigates the effect of MoS2 inclusion on the corrosion of 304L stainless steel by introducing both MnS and MoS2 using spark plasma sintering. The reduction of MoS2 to Mo is observed during the sintering process, contradicting the assumption that the sulfide inclusions can be stabilised by forming MoS2. Therefore, MoS2 formation cannot explain the improved corrosion resistance of 304L stainless steel with the addition of Mo.

show abstract

The Influence of Porosity on Corrosion Attack of Austenitic Stainless Steel

Cited by 5 publications

References 7 publications

The effect of microstructural and texture evolutions during thermomechanical treatment on corrosion resistance of 310s austenitic stainless steel

The effect of microstructural and texture evolutions during thermomechanical treatment on corrosion resistance of 310s austenitic stainless steel

Fabrication of porous CoCrFeMnNi high entropy alloy using binder jetting additive manufacturing

Investigating molybdenum’s sulphur scavenging ability for MoS2 formation in preventing pitting corrosion of stainless steels

Contact Info

Product

Resources

About