Stress corrosion cracking and corrosion fatigue

Shipilov, S. A.

doi:10.1016/b978-008044635-6.50047-9

Cited by 9 publications

(11 citation statements)

References 73 publications

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“…That is not to say that suitable analogues do not exist. For example, the season cracking of brass reported in the late 19th Century (one of the first reports of any form of EAC in the literature) [27] could be used as an analogue for the stress corrosion cracking (SCC) of copper UFC. The problem of season cracking arose when brass cartridge cases were stored in stables in warm, humid conditions.…”

Section: Environmentally Assisted Cracking (Eac)mentioning

confidence: 99%

Natural and archaeological analogues for corrosion prediction in nuclear waste systems

King¹,

Behazin

Keech

2023

Materials & Corrosion

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Natural and archaeological analogues can be a powerful means to build confidence in the long‐term prediction of corrosion in nuclear waste systems. Analogues are meaningful to both experts and lay audiences. Useful analogues exist to support the long‐term behaviour for both copper and steel used fuel containers (UFC) and examples are given for the corrosion processes that are, and are not, expected to occur under repository conditions for both materials. The concept of kinetic versus thermodynamic stability is used to explain the persistence of such analogues. The use of analogues to support the prediction of the long‐term corrosion performance of the UFC in the safety case is also discussed. While there have been a wide range of analogue studies in the past, it is suggested that future studies should be focussed on addressing specific aspects of the treatment of corrosion issues in the safety case.

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Section: Environmentally Assisted Cracking (Eac)mentioning

confidence: 99%

Natural and archaeological analogues for corrosion prediction in nuclear waste systems

King¹,

Behazin

Keech

2023

Materials & Corrosion

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“…The main disadvantage of this strategy is that it also increases the H 2 production . If the polarisation of the system is excessive, a direct reduction of H 2 O is possible:

2 H_{2} O + 2 e^{-} \to H_{2} + 2 {OH}^{-} .

Before the H 2 molecule formation, H atoms are present on the metal surface and can penetrate into interstitial sites causing embrittlement …”

Section: Theoretical Background: the Pm And Its Application To The Stmentioning

confidence: 99%

Prediction of crack propagation thresholds in notched steels subjected to environmentally assisted cracking: An approach from the theory of critical distances

Gutiérrez

Cicero

Arroyo

et al. 2019

Mat Design & Process Comms

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This article presents the analysis of environmentally assisted cracking (EAC) processes in two steels containing U-shaped notches through the point method (PM). This methodology belongs to the theory of critical distances (TCD) and has been widely validated in fracture and fatigue analysis in many materials. However, it has never been used in EAC process assessment. The resulting methodology is validated by testing C(T) notched specimens of X80 and S420 steels subjected to aggressive environments under hydrogen embrittlement conditions. The parameters of the TCD have been obtained by finite element simulations, and the results reveal that the PM accurately predicts the crack propagation onset condition (K N IEAC), as well as the evolution of the apparent EAC crack propagation threshold of the material. The study has been completed with an exhaustive analysis of the fracture surfaces to determine the failure mechanisms using scanning electron microscopy (SEM).

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“…Before the H 2 molecule formation, H atoms are present on the metal surface during a significant time, which is increased by the presence of poisons of the hydrogen recombination reaction (e.g., H 2 S and As). Hydrogen atoms can penetrate into interstitial sites, facilitated by their small size, and cause embrittlement [26,27].…”

Section: Environmentally Assisted Cracking and Hydrogen Embrittlementmentioning

confidence: 99%

Environmentally Assisted Cracking Behavior of S420 and X80 Steels Containing U-notches at Two Different Cathodic Polarization Levels: An Approach from the Theory of Critical Distances

González

Cicero

Arroyo

et al. 2019

Metals

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This paper analyzes, using the theory of critical distances, the environmentally assisted cracking behavior of two steels (S420 and API X80) subjected to two different aggressive environments. The propagation threshold for environmentally assisted cracking (i.e., the stress intensity factor above which crack propagation initiates) in cracked and notched specimens (KIEAC and KNIEAC) has been experimentally obtained under different environmental conditions. Cathodic polarization has been employed to generate the aggressive environments, at 1 and 5 mA/cm2, causing hydrogen embrittlement on the steels. The point method and the line method, both belonging to the theory of critical distances, have been applied to verify their capacity to predict the initiation of crack propagation. The results demonstrate the capacity of the theory of critical distances to predict the crack propagation onset under the different combinations of material and aggressive environments.

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Stress corrosion cracking and corrosion fatigue

Cited by 9 publications

References 73 publications

Natural and archaeological analogues for corrosion prediction in nuclear waste systems

Natural and archaeological analogues for corrosion prediction in nuclear waste systems

Prediction of crack propagation thresholds in notched steels subjected to environmentally assisted cracking: An approach from the theory of critical distances

Environmentally Assisted Cracking Behavior of S420 and X80 Steels Containing U-notches at Two Different Cathodic Polarization Levels: An Approach from the Theory of Critical Distances

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