Effect of Low-Temperature Sensitization on Intergranular Stress Corrosion Cracking Behavior of Austenitic Stainless Steels in Simulated Boiling Water Reactor Environment

Bali, Shirish Chandrakant; Kain, Vivekanand; Raja, V.S.

doi:10.5006/1.3319099

Cited by 17 publications

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“…A higher CGR in SS 304 LN1 can thus be attributed to the greater coverage and lower levels of chromium in the depleted regions. The earlier reported studies [63] using SSRT on the similarly heat treated SS also showed a similar trend of nitrogen leading to a lower susceptibility to IGSCC in sensitised type 304LN stainless steels. The present study establishes the beneficial effect of nitrogen on CGR in a quantitative manner under controlled experimental conditions.…”

Section: Effect Of Nitrogen In Stainless Steelsupporting

confidence: 56%

Effect of nitrogen content in sensitised austenitic stainless steel on the crack growth rate in simulated BWR environment

Roychowdhury¹,

Kain²,

Prasad³

2011

Journal of Nuclear Materials

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Section: Effect Of Nitrogen In Stainless Steelsupporting

confidence: 56%

Effect of nitrogen content in sensitised austenitic stainless steel on the crack growth rate in simulated BWR environment

Roychowdhury¹,

Kain²,

Prasad³

2011

Journal of Nuclear Materials

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“…However, the occurrence of stress corrosion cracking (SCC) in these materials under BWR has been still reported (1) (2) especially for welded components, where degradation of corrosion resistance is significantly caused by sensitization in the heat affected zone (3) . It has been also reported that degradation of corrosion resistance is induced by the low-temperature sensitization during prolonged exposure to BWR condition (4) . Due to lifetime extension of BWR, since integrity evaluation is one of the most serious problems to be taken into consideration, the behavior of these existing stress corrosion cracks, regardless of small one or long one, must be clarified to guarantee the safety of the system.…”

Section: Introductionmentioning

confidence: 98%

Failure Behavior of Sensitized SUS304 Stainless Steel with Small Surface Pre-Crack under Constant Load Condition in Simulated BWR Environment

Saengsai

Otsuka

Mutoh

2011

JMMP

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Small surface intergranular cracks similar to those detected in the heat affected zone of the welded components of primary water recirculation loop for boiling water reactor (BWR) were introduced on the surface of sensitized SUS304 stainless steel by using a fretting fatigue technique, where multiple parallel small surface cracks in the localized fretting slip region were nucleated. Constant load tests at various initial stress intensity factors (K i ) were then carried out in 288°C, 7.3MPa pure water, which is the operating condition for BWR, to investigate failure behavior of this material under constant load condition. From the results, it was speculated that the K ISCC for small surface crack was lower than 4.7MPa⋅m 1/2 , which was significantly low compared to that of long crack (10-20 MPa⋅m 1/2 ).

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“…The austenitic stainless steel family is the kind of stainless steel that is most typically utilized for a variety of applications in regions that are prone to having corrosive conditions. When compared to the corrosion resistance of other metals, the corrosion resistance of stainless steel alloys that include chromium is superior [2]. The nano coatings extend the life of the metal so that it may be used in more applications in the future.…”

Section: Introductionmentioning

confidence: 99%

A Study on TiO₂-CeO₂ nanocomposite coatings for corrosion protection of 304LN stainless steel

Suvarna

2023

J. Phys.: Conf. Ser.

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Nano composite coatings are used to modify the substrate properties for a better life of the structures exposed to saline environments. Using a method known as spin coating, the authors of this study coated 304LN stainless steel with a mixture of TiO2 and CeO2 nano particles. The ratio of TiO2 to CeO2 in the coatings was 1:5:10:20 by weight percent. Stainless steel 304 was used as a substrate for the deposition of coatings since it is reasonably affordable. The effect that 3.5 weight percent NaCl solution had on the wett ability of the coating and its resistance to corrosion was investigated. The end effect is improved corrosion resistance in line with the rising coating weight percentage. After being exposed to the solution for 600 hours, the corrosion was significantly decreased. X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled to energy dispersive spectroscopy were used to investigate the deposits (EDS). The nano composites’ inherent physical features ensure their continued presence on the surface. The ratio of surface area to volume is satisfactory. According to the contact angle, the amount of water that is spreading out is extremely little. The photo produced cathodic protection feature of the TiO2-CeO2 coating is shown by the results of spin coating methods applied on 304LN stainless steel that was previously coated with TiO2-CeO2. After being subjected to the corrosion test, the coating made of 10% TiO2-CeO2 exhibited no signs of pitting or pinholes. The structural equation modeling (SEM) studies backed this conclusion. When it comes to the resistance to corrosion, the results produced by the contact angle are better. As a consequence of this finding, it was concluded that the coating could withstand the NaCl attack.

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Effect of Low-Temperature Sensitization on Intergranular Stress Corrosion Cracking Behavior of Austenitic Stainless Steels in Simulated Boiling Water Reactor Environment

Cited by 17 publications

References 0 publications

Effect of nitrogen content in sensitised austenitic stainless steel on the crack growth rate in simulated BWR environment

Effect of nitrogen content in sensitised austenitic stainless steel on the crack growth rate in simulated BWR environment

Failure Behavior of Sensitized SUS304 Stainless Steel with Small Surface Pre-Crack under Constant Load Condition in Simulated BWR Environment

A Study on TiO₂-CeO₂ nanocomposite coatings for corrosion protection of 304LN stainless steel

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Effect of Low-Temperature Sensitization on Intergranular Stress Corrosion Cracking Behavior of Austenitic Stainless Steels in Simulated Boiling Water Reactor Environment

Cited by 17 publications

References 0 publications

Effect of nitrogen content in sensitised austenitic stainless steel on the crack growth rate in simulated BWR environment

Effect of nitrogen content in sensitised austenitic stainless steel on the crack growth rate in simulated BWR environment

Failure Behavior of Sensitized SUS304 Stainless Steel with Small Surface Pre-Crack under Constant Load Condition in Simulated BWR Environment

A Study on TiO2-CeO2 nanocomposite coatings for corrosion protection of 304LN stainless steel

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A Study on TiO₂-CeO₂ nanocomposite coatings for corrosion protection of 304LN stainless steel