Temperature change induce crack mode transition of 316L stainless steel in H2S environment revealed by dislocation configurations

Liu, Chuansen; Chen, Changfeng; Yu, Haoshui

doi:10.1016/j.corsci.2021.109896

Cited by 20 publications

(4 citation statements)

References 59 publications

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“…The common cracking mechanism of stainless steel is stress corrosion cracking [6][7][8], such as chloride stress corrosion cracking [9][10] and alkali stress corrosion cracking [11][12]. Sometimes there are mechanisms such as cracking in a hydrogen sulfide environment and hydrogen embrittlement cracking [13][14][15]. In addition, sensitization-intergranular corrosion is also a major cause of stainless steel cracking [16][17][18].…”

Section: Discussionmentioning

confidence: 99%

Failure analysis of low-pressure steam superheater in a purification device

Song,

Li,

Din

et al. 2024

J. Phys.: Conf. Ser.

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For a coal chemical enterprise purification unit in the low-pressure steam superheater in the use of frequent occurrence of heat exchanger tube bundle cracking, to find the cause of failure and ensure the safe and stable continuous operation of the device, the failure analysis work shall be carried out. In this paper, we have examined the cracked heat exchanger tube bundle in terms of macroscopic inspection, material chemical composition analysis, mechanical properties analysis scanning electron microscopy analysis, corrosion product analysis, metallurgical analysis, and many other tests, and also analyzed the internal and external media of the tube bundle, ultimately concluding the main reason for cracking of heat exchanger tube bundle for the alkali stress corrosion cracking. At the same time, to avoid similar problems, we hope that the failure analysis of the use and maintenance, inspection, and testing of the equipment provides a good solution to the failure of the equipment, and provides the best solution to the problem. It is hoped that this failure analysis will provide valuable experience for the use and maintenance of this type of equipment.

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Section: Discussionmentioning

confidence: 99%

Failure analysis of low-pressure steam superheater in a purification device

Song,

Li,

Din

et al. 2024

J. Phys.: Conf. Ser.

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“…As the experiment went on during 15-30 days, the number of pitting pits increased gradually, but the area of single pitting pits was small. Especially when the experiment reached the 30th day, the number and depth of pits on the surface of 15CrMo steel increased significantly, and cracks were appeared on the surface [23].…”

Section: Development Of Corrosion Pitsmentioning

confidence: 98%

Study on failure evolution of 15CrMo steel used for aviation kerosene hydrogenation unit

Liu

Wang

Cui

et al. 2023

Mater. Res. Express

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In aviation kerosene hydrogenation unit, the 15CrMo steel with good resistance to hydrogen embrittlement performed obvious pitting corrosion with certain micro-cracks in H2/H2S environment. In this paper, the failure behavior of 15CrMo steel in H2/H2S environment had been studied using electrochemical method and microscopic morphology. The results showed that within 10 days, the 15CrMo steel performed good resistance with a smaller max pit depth (15.48 μm on the 10th day) in H2/H2S environment, proved by the passivation zone (-0.75~-0.62 V on 10th day). Furthermore, 15CrMo steel exhibited activated corrosion with a significantly increasing max pit depth and corrosion current density, especially, reaching 131.91 μm and 17.29 μA/m2 on 30th day. Moreover, the stress corrosion cracking caused by H2S appeared on 30th day.

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“…However, austenitic SS is susceptible to stress corrosion cracking (SCC). The SCC occurs when the susceptible microstructure of austenitic SS with adequate tensile stress encounters a chloride-containing environment such as NaCl and MgCl 2 or other specific environments such as H 2 S or H 2 O 2 , resulting in loss of ductility and brittle failure [1][2][3][4]. SUS 304L or 316L austenitic steel plates are used for the fabrication of canisters for intermittent dry storage of used nuclear fuels [5].…”

Section: Introductionmentioning

confidence: 99%

Chloride-Induced Stress Corrosion Cracking of Friction Stir-Welded 304L Stainless Steel: Effect of Microstructure and Temperature

Naskar,

Bhattacharyya,

Jana

et al. 2024

Crystals

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Dry storage canisters of used nuclear fuels are fabricated using SUS 304L stainless steel. Chloride-induced stress corrosion cracking (CISCC) is one of the major failure modes of dry storage canisters. The cracked canisters can be repaired by friction stir welding (FSW), a low-heat input ‘solid-phase’ welding process. It is important to evaluate the ClSCC resistance of the friction stir welded material. Stress corrosion cracking (SCC) studies were carried out on mill-annealed base materials and friction stir welded 304L stainless U-bend specimens in 3.5% NaCl + 5 N H2SO4 solution at room temperature and boiling MgCl2 solution at 155 °C. The engineering stress on the outer fiber of the FSW U-bend specimen was ~60% higher than that of the base metal (BM). In spite of the higher stress level of the FSW, both materials (FSW and BM) showed almost similar SCC failure times in the two different test solutions. The SCC occurred in the thermo-mechanically affected zone (TMAZ) of the FSW specimens in the 3.5% NaCl + 5 N H2SO4 solution at room temperature, while the stirred zone (SZ) was relatively crack-free. The failure occurred at the stirred zone when tested in the boiling MgCl2 solution. Hydrogen reduction was the cathodic reaction in the boiling MgCl2 solution, which promoted hydrogen-assisted cracking of the heavily deformed stirred zone. The emergence of the slip step followed by passive film rupture and dissolution of the slip step could be the SCC events in the 3.5% NaCl + 5 N H2SO4 solution at room temperature. However, the slip step height was not sufficient to cause passivity breakdown in the fine-grained SZ. Therefore, the SCC occurred in the partially recrystallized softer TMAZ. Overall, the friction-stirred 304L showed higher tolerance to ClSCC than the 304L base metal.

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Temperature change induce crack mode transition of 316L stainless steel in H2S environment revealed by dislocation configurations

Cited by 20 publications

References 59 publications

Failure analysis of low-pressure steam superheater in a purification device

Failure analysis of low-pressure steam superheater in a purification device

Study on failure evolution of 15CrMo steel used for aviation kerosene hydrogenation unit

Chloride-Induced Stress Corrosion Cracking of Friction Stir-Welded 304L Stainless Steel: Effect of Microstructure and Temperature

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