A review of stress corrosion cracking of austenitic stainless steels in PWR primary water

Ehrnstén, Ulla; Andresen, Peter L.; Que, Zaiqing

doi:10.1016/j.jnucmat.2023.154815

Cited by 10 publications

(1 citation statement)

References 45 publications

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“…Stress corrosion fracture is not caused by the superposition of the mechanical failure of the metal under the action of stress and the corrosive failure under the action of chemical media, but by the joint action of stress and chemical media. According to the holding mechanism, its fracture resistance is much lower than the sum of the single factors acting separately [5][6][7][8]. The low stress brittle fracture caused by the combined action of tensile stress and corrosive medium is called stress corrosion.…”

Section: Introductionmentioning

confidence: 99%

Failure Analysis of Header Flange Cracking in Propane Dehydrogenation Unit

Lu,

Yu,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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The boiler fault of propane dehydrogenation unit is investigated by macroscopic inspections, mechanical properties testing, chemical composition analysis, metallographic microstructure, X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The experiments confirm the reason for cracks occurrence of SA182-F347H boiler that the stress corrosion cracking occurs. The sulfur injected into the device reacts with the flange metal to produce sulfide corrosion products. The improper control of flange manufacturing process and the operating temperature in the sensitized range lead to the sensitization of flange materials and reduce the corrosion resistance. During the equipment shutdown, the sulfide corrosion products on the surface of the flange reacted with air and water to form polysulfuric acid, and causing stress corrosion cracking and leakage of the sensitized F347H stainless steel flange.

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Section: Introductionmentioning

confidence: 99%