The Slow Strain Rate Stress Corrosion Cracking Test—A 50 Year Retrospective

Henthorne, Michael

doi:10.5006/2137

Cited by 92 publications

(51 citation statements)

References 269 publications

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“…However, as the most aggressive potential is reached, there is a significant and important difference between the time for crack initiation and the time for failure data. Specifically, the ranking of the HEAC susceptibility of the materials heats based on their time to failure (a common SSRT metric [21]) is not consistent with the ranking obtained when using the time to crack initiation (which is more relevant to the true HEAC susceptibility). For example, despite being considered one of the more HEAC-resistant heats of Monel K-500 [42,43] based on the traditional SSRT metrics, NRL HS is found to exhibit a similar time to crack initiation as the EAC-susceptible NRL LS and TR2 material heats.…”

Section: Implications For the Interpretation Of Ssrt Experimentsmentioning

confidence: 82%

“…low-cost, efficient, modular, simple to perform, etc. [18,21,22,108]). Moreover, it is likely that there are environment/material/loading combinations for which the SSRT remains a useful screening approach.…”

Section: Implications For the Interpretation Of Ssrt Experimentsmentioning

confidence: 99%

“…Second, the current study establishes the utility of a diffusion-based analysis framework to ascertain whether or not sub-critical cracking occurred during SSRT experiments in H-containing/producing environments. Given the simple geometries generally employed for the majority of SSRT experiments [21], the diffusion problem can be readily solved either analytically [74] or with the aid of finite element software packages. Comparison of these calculations with the depth of EAC-induced brittle fracture provides a rigorous pathway for assessing the validity of SSRT experiments.…”

Section: Implications For the Interpretation Of Ssrt Experimentsmentioning

confidence: 99%

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On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility

et al. 2020

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The onset of sub-critical crack growth during slow strain rate tensile testing (SSRT) is assessed through a combined experimental and modeling approach. A systematic comparison of the extent of intergranular fracture and expected hydrogen ingress suggests that hydrogen diffusion alone is insufficient to explain the intergranular fracture depths observed after SSRT experiments in a Ni-Cu superalloy. Simulations of these experiments using a new phase field formulation indicate that crack initiation occurs as low as 40% of the time to failure. The implications of such sub-critical crack growth on the validity and interpretation of SSRT metrics are then explored.

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Section: Implications For the Interpretation Of Ssrt Experimentsmentioning

confidence: 82%

Section: Implications For the Interpretation Of Ssrt Experimentsmentioning

confidence: 99%

Section: Implications For the Interpretation Of Ssrt Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility

et al. 2020

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“…In general, ratios in the range of 0.8-1.0 denote a high resistance to SCC, whereas low values (i.e. <0.5) indicate a high susceptibility [29][30][31]. The features of the fracture surfaces were investigated using a HIROX-3000 digital optical microscope (OM) and a JEOL JSM 6610LV scanning electron microscope (SEM) fitted with a tungsten electron gun, operated with an 15 kV accelerating voltage and a working distance of about 10 mm.…”

Section: Post-test Examinationmentioning

confidence: 99%

“…Welded tensile specimens (MAG, SAW, RPEB) showed slightly lower TTFR and RAR values. However, according to acceptance criteria reported in the literature [29][30][31], the values still remained sufficiently high (≥0.70) to assume a reasonably high resistance to SCC.…”

Section: Post-test Examinationmentioning

confidence: 99%

SCC susceptibility of carbon steel radioactive waste packages exposed to concrete porewater solutions under anoxic conditions

Kursten

2017

Corrosion Engineering, Science and Technology

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The supercontainer (SC) is the reference concept for the post-conditioning of vitrified high-level radioactive waste and spent fuel in Belgium. It comprises a prefabricated concrete buffer that completely surrounds a carbon steel overpack. Welding is being considered as a final closure technique of the carbon steel overpack in order to ensure its water tightness. Welding is known to induce residual stresses near the weld zone, which may lead to an increased susceptibility to stress corrosion cracking (SCC). In this study, slow strain rate tests were conducted to study the SCC behaviour of plain and welded P355 QL2 grade carbon steel exposed to an artificial concrete porewater solution. The tests were performed at 140°C, a constant strain rate of 5 × 10 −7 s −1 and at open circuit potential under anoxic conditions. The effect of sulphide on the SCC behaviour was investigated up to levels of 15.6 mM S 2− (500 mg L −1 ). ARTICLE HISTORY

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Novel stress corrosion testing method for high‐strength steels

Latypova

Kauppi

Mehtonen

et al. 2018

Materials & Corrosion

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This paper presents a novel TFT (tuning fork test) stress corrosion testing method, which was developed for classifying martensitic high‐strength steels. The novel method was developed by applying finite element calculations to optimize a tuning fork geometry to enable accurate stress adjustment with simple inexpensive equipment. Different steels were exposed to cathodic hydrogen charging conditions with various elastic tensile stress levels that were achieved by displacement control. All steels exhibited hydrogen‐induced stress corrosion cracking after exceeding a material‐specific threshold stress level that decreased linearly with increasing hardness.

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The Slow Strain Rate Stress Corrosion Cracking Test—A 50 Year Retrospective

Cited by 92 publications

References 269 publications

On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility

On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility

SCC susceptibility of carbon steel radioactive waste packages exposed to concrete porewater solutions under anoxic conditions

Novel stress corrosion testing method for high‐strength steels

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