EBSD Microstructural studies on quenched-tempered API 5L X65 pipeline steel

Ohaeri, Enyinnaya; Jack, Tonye Alaso; Yadav, Sandeep; Szpunar, Jerzy A.; Zhang, Jiming; Qu, Jinbo

doi:10.1080/14786435.2021.1946189

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…γ-Fe is the precursor of α-Fe and Fe 3 C which form within the boundaries of austenite parental grains. However, it is known that the retained austenite can be present after a quenching process or through stabilization achieved in the presence of impurities. , The role of retained γ-Fe is still debated, but it has been suggested to be linked to fatigue crack initiation; however, other authors report benefits, , regardless, small but continuously increasing presence of amorphous γ-Fe and Fe 3 C is yet another indication of steel substrate degradation.…”

Section: Resultsmentioning

confidence: 99%

“…However, it is known that the retained austenite can be present after a quenching process or through stabilization achieved in the presence of impurities. 43,44 The role of retained γ-Fe is still debated, but it has been suggested to be linked to fatigue crack initiation; however, other authors report benefits, 45,46 regardless, small but continuously increasing presence of amorphous γ-Fe and Fe 3 C is yet another indication of steel substrate degradation. Overall, our results show that favorable conditions for dissolution FeCO 3 also affect the integrity of steel regardless of the temperature of the reaction.…”

Section: Synthesis Of Corrosion Sales On Carbon Steelmentioning

confidence: 99%

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Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO₂ Environments

et al. 2023

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Industries transporting CO 2 gas-saturated fluids have infrastructures made of carbon steel. This is a good material with great mechanical properties but prone to corrosion and potential failure. Corrosion in sweet environments involves the formation of FeCO 3 as a corrosion film, which is recognized to play a protective role under certain conditions. This work on the dissolution of corrosion films in sweet environments, under acidic and undersaturated conditions, demonstrates that the effects on the integrity of steel are far more significant than the damage observed on the surface of the corrosion film. Our results prove that dissolution of FeCO 3 involved the presence of an amorphous phase, the intermediate formation of FeCl 2 or FeCl + , and the presence of a phase with short distance atom−atom correlations. The amorphous phase was identified as a mixture of retained γ-Fe and Fe 3 C. Partially broken α-Fe and Fe 3 C structures were identified to prove the damage on the material, confirming the interface zone without evident damage on the corrosion film. Dissolution affected both the α-Fe and FeCO 3 , with the lattice [102̅ ] from the FeCO 3 crystalline structure being the fastest to dissolve. The damage of steel at the molecular scale was evident at the macroscale with pit depths of up to 250 μm. The impact on the integrity of steel can be, therefore, more drastic than frequently reported in industrial operations of CO 2 transport industries that use cleaning procedures (e.g., acid treatment, pigging) as part of their operational activities.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of Corrosion Sales On Carbon Steelmentioning

confidence: 99%

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO₂ Environments

et al. 2023

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Effects of different microstructural parameters on the corrosion and cracking resistance of pipeline steels: A review

Nnoka,

Alaso Jack,

Szpunar

2024

Engineering Failure Analysis

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Investigating the hydrogen diffusion and cracking susceptibility of pipeline steels after various heat treatments

Jack,

Nnoka,

Zhang

et al. 2024

Engineering Failure Analysis

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EBSD Microstructural studies on quenched-tempered API 5L X65 pipeline steel

Cited by 5 publications

References 33 publications

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO₂ Environments

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO₂ Environments

Effects of different microstructural parameters on the corrosion and cracking resistance of pipeline steels: A review

Investigating the hydrogen diffusion and cracking susceptibility of pipeline steels after various heat treatments

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EBSD Microstructural studies on quenched-tempered API 5L X65 pipeline steel

Cited by 5 publications

References 33 publications

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO2 Environments

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO2 Environments

Effects of different microstructural parameters on the corrosion and cracking resistance of pipeline steels: A review

Investigating the hydrogen diffusion and cracking susceptibility of pipeline steels after various heat treatments

Contact Info

Product

Resources

About

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO₂ Environments

Study of a Local Structure at the Interface between Corrosion Films and Carbon Steel Surface in Undersaturated CO₂ Environments