The Use of Tapered Specimens to Evaluate the SCC Initiation Susceptibility in Alloy 182 in BWR and PWR Environments

Bai, Juxing; Ritter, Stefan; Seifert, Hans-Peter; Vankeerberghen, Marc; Bosch, Rik-Wouter

doi:10.1007/978-3-319-68454-3_55

Cited by 2 publications

(2 citation statements)

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“…A possible accelerated test technique to identify a stress threshold in a single test is the use of a tapered tensile specimen [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. With the tapered specimen test method, a metallic specimen of variable cross-section is exposed to the environment of interest.…”

Section: Introductionmentioning

confidence: 99%

“…The applicability of the tapered specimen to SCC initiation in high-temperature water autoclave systems was part of the collaborative MICRIN (MItigation of CRack INitiation) project [22,23], a NUGENIA initiative. The method developed in this project was subsequently applied by Bai [24,25] to study the effect of hydrogen on the SCC susceptibility of Alloy 182 in BWR environment.…”

Section: Introductionmentioning

confidence: 99%

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Stress corrosion crack initiation testing with tapered specimens in high-temperature water – results of a collaborative research project

Bosch

Ritter

Herbst

et al. 2020

Corrosion Engineering, Science and Technology

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stress corrosion crack initiation testing with tapered specimens in high-temperature water – results of a collaborative research project

Bosch

Ritter

Herbst

et al. 2020

Corrosion Engineering, Science and Technology

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Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

Vankeerberghen

Bosch

2021

Corrosion Engineering, Science and Technology

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Environmentally assisted cracking of nickel-base alloys has been observed in the primary coolant of light water reactors and is known as primary water stress corrosion cracking. In respect of crack growth, disposition curves are available for integrity analysis. However, in respect of initiation, there is no generally accepted approach. Here, a methodology is proposed to derive a usage factor towards initiation. Reaching a usage factor of 1 means that initiation is incipient. How far one is away from a usage factor of 1 tells us about the margin towards initiation. The key function in the approach is the rate at which the usage factor increases. It is proposed to be a function of strain rate and stress. Data from constant extension rate tests with flat, tapered tensile specimens have been used to parameterise the model. The parameterised model is subsequently used to predict initiation in a tensile-loaded, large-notch specimen.

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The Use of Tapered Specimens to Evaluate the SCC Initiation Susceptibility in Alloy 182 in BWR and PWR Environments

Cited by 2 publications

References 4 publications

Stress corrosion crack initiation testing with tapered specimens in high-temperature water – results of a collaborative research project

Stress corrosion crack initiation testing with tapered specimens in high-temperature water – results of a collaborative research project

Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

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