Critical analysis of alloy 600 stress corrosion cracking mechanisms in primary water

Ríos, Roger Raupp; Magnin, T.; Noel, D.; Bouvier, O. de

doi:10.1007/bf02649089

Cited by 38 publications

(28 citation statements)

References 8 publications

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“…The same effect can be K ϭ 1.122 Ίa observed for the WF242R tube for the hydrogen partial pressures of 0.01 bar (2 cm 3 STP/kg) and 0.13 bar (25 cm 3 where a is the crack depth and is the applied stress. This simple relation is not exact in the case of SSRT specimens, STP/kg) (Figure 4).…”

Section: Transition Stress Intensity Factorsupporting

confidence: 66%

“…Finally, cold work has a similar influence on the slow CGR (2-times, Table V), which has also been evidenced by Boursier et al [9] on a WF242R SG tube (6 times), allowing PW also increases the slow CGR (4 times), [3] so that a rapid CGR can occur. Figure 3.…”

Section: Introductionsupporting

confidence: 65%

“…Previous results, [3] obtained on the WF242R AR tube in which can be compared to previous studies using a similar equation. Values of K trans measured for alloy 600 NX8360 PW at free potential for different hydrogen partial pressures, have also been plotted in Figure 4.…”

Section: Transition Stress Intensity Factormentioning

confidence: 75%

“…[3,4] The influence of hydrogen partial pressure on selected heats were chosen with regard to their high SCC alloy 600 SCC in PW and on repassivation behavior susceptibility. Moreover, specimens were shaped into a [100] has been investigated in previous studies, [3,5] which have Ni-18Cr-6Fe alloy single crystal in order to test transgranular shown that both effects are not correlated. In this work, SCC.…”

Section: Introductionmentioning

confidence: 99%

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Stress corrosion cracking mechanisms of alloy 600 polycrystals and single crystals in primary water—Influence of hydrogen

Foct,

Magnin,

De Bouvier

2000

Metall Mater Trans A

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This article investigates the mechanisms governing the process of alloy 600 stress corrosion cracking (SCC). Several critical points have been selected. First, the deleterious influence of cathodic polarization on alloy 600 SCC resistance has been assessed by slow strain rate tests (SSRTs) in primary water at 360 ЊC. The effects on crack initiation and propagation have been distinguished. Second, a global hydrogen embrittlement of alloy 600 has also been studied at different temperatures from 25 ЊC to 360 ЊC. Finally, the use of alloy 600 single crystals allowed clear separation of the crack initiation and crack propagation mechanisms. Transgranular SCC propagation has been precisely observed and described. The possible mechanisms for SCC initiation and propagation on polycrystals are then discussed.

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Section: Transition Stress Intensity Factorsupporting

confidence: 66%

Section: Introductionsupporting

confidence: 65%

Section: Transition Stress Intensity Factormentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stress corrosion cracking mechanisms of alloy 600 polycrystals and single crystals in primary water—Influence of hydrogen

Foct,

Magnin,

De Bouvier

2000

Metall Mater Trans A

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“…Among several SCC models, the corrosion-enhanced plasticity model (CEPM) accounts for the majority of experimental observations [12]. It was qualitatively adapted to the case of SCC of alloy 600 in PWR environment [13] and recently used for the development of numerical simulations in SCC field [14].…”

Section: Stress Corrosion Cracking -The Study Of Hydrogen-dislocationmentioning

confidence: 99%

The Use of Ultra-High-Purity Metals and Alloys to Study Environment-Sensitive Damage Mechanisms in Nuclear Power Plants

Wolski

Renaudot

Harabasz

et al. 2002

phys. stat. sol. (a)

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The interest in ultra-high-purity (UHP) metals and alloys (including single crystals and bicrystals) in studying damage mechanisms is presented through three practical cases of environment or precipitation-induced damages in nuclear power plants. First, stress corrosion cracking mechanisms are assessed by direct measurements of hydrogen-dislocation interactions in pure nickel single crystals in low-cycle fatigue tests under cathodic potential. Hydrogen-induced softening is observed, that confirms an important assumption on the corrosion-enhanced plasticity model. Second, mechanisms of high-temperature intergranular cracking of bimetallic welds are analysed on a series of model materials including 302 H stainless steel and UHP stainless steel selectively doped with carbon. The key role of carbide precipitation and localised shearing in a chromium-depleted zone is pointed out. Finally, the analysis of intergranular penetration of liquid Bi-rich films in a polycrystalline solid Ni inducates the presence of very long and brittle films of nanometric thickness, which have to be taken into account in any model of liquid-metal embrittlement.

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Measurement of the Fundamental Parameters for the Film‐Rupture/Oxidation Mechanism ‐ The Effect of Chromium

Attanasio

Fish

Wilkening

et al. 1999

Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems—Water Reactors

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Critical analysis of alloy 600 stress corrosion cracking mechanisms in primary water

Cited by 38 publications

References 8 publications

Stress corrosion cracking mechanisms of alloy 600 polycrystals and single crystals in primary water—Influence of hydrogen

Stress corrosion cracking mechanisms of alloy 600 polycrystals and single crystals in primary water—Influence of hydrogen

The Use of Ultra-High-Purity Metals and Alloys to Study Environment-Sensitive Damage Mechanisms in Nuclear Power Plants

Measurement of the Fundamental Parameters for the Film‐Rupture/Oxidation Mechanism ‐ The Effect of Chromium

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