Three-dimensional study of grain boundary engineering effects on intergranular stress corrosion cracking of 316 stainless steel in high temperature water

Liu, Tingguang; Xia, Shuang; Bai, Qingshun; Zhou, Bangxin; Zhang, Lefu; Lu, Yonghao; Shoji, Tetsuo

doi:10.1016/j.jnucmat.2017.10.004

Cited by 44 publications

(46 citation statements)

References 51 publications

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“…X‐ray µCT is a new technique for 3D scanning of porous material to provide an excellent resolution for the spatial distribution of components within the sample. The main benefits of this technique are; it is non‐destructive to the sample structure, it allows 3D visualization of the material and reconstruction of its components . X‐ray µCT depends on the attenuation value of the beamline.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies show that X‐ray µCT technique was used for identifying and evaluating the porous materials such as rock, soil, concrete and stone, and it has proven successful with such materials . Moreover, it has been applied for studying corrosion of aluminium alloys, magnesium and stainless steel .…”

Section: Discussionmentioning

confidence: 99%

“…For weight percentage calculation of voids, it was assumed that air is currently occupying these voids after rusticles samples became completely dried. X‐ray mass attenuation coefficients were calculated using NIST database at 90 keV and used for phases identification …”

Section: Methodsmentioning

confidence: 99%

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X‐ray micro‐computed tomography analysis of accumulated corrosion products in deep‐water shipwrecks

Albahri

Barifcani

Dwivedi

et al. 2019

Materials & Corrosion

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Accumulated corrosion products from two different shipwrecks which had lain on the seabed (2.5 km depth) for 73 years were systematically analysed by three‐dimensional imaging at high resolution using X‐ray micro‐computed tomography. Complementary surface and chemical characterization experiments were conducted to identify the morphological structure of the corrosion products. Goethite was observed as the main corrosion phase found in both the wreck's corrosion products. However, other corrosion products such as silica, lepidocrocite, maghemite, magnetite, benyacarite, jarosite and amorphous materials were noticed using Fourier transform infrared spectroscopy, Raman spectroscopy and X‐ray diffraction. In addition, mineralized microbial structures were also observed as significant constituents of the corrosion products. However, there were significant differences between samples from the two shipwrecks including porosity, distribution and volume percent of the corrosion products components. The mechanism of different corrosion products formation was proposed and discussed in detail.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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X‐ray micro‐computed tomography analysis of accumulated corrosion products in deep‐water shipwrecks

Albahri

Barifcani

Dwivedi

et al. 2019

Materials & Corrosion

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“…Austenitic 316 stainless steel (SS) has been widely used in PWRs as structural components due to its combination of good mechanical properties and high general corrosion resistance [4,[14][15][16][17][18][19]. However, it also suffers from IGSCC [4,[14][15][16][17][18][19]. However, the IOM has generally not been considered as a plausible IGSCC mechanism for austenitic SS.…”

mentioning

confidence: 99%

Observation of internal oxidation in a 20% cold-worked Fe-17Cr-12Ni stainless steel through high-resolution characterization

et al. 2019

Self Cite

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It is often assumed that internal oxidation cannot occur at temperatures below 400ºC. However, in the present work, internal oxidation was observed in a 20% cold-worked Fe-17Cr-12Ni stainless steel (SS) after exposure to simulated primary water of a pressurized water reactor at 340ºC and not in a similarly tested sample without prior cold-work. The formation of discrete Cr-oxide precipitates and the role of cold-work are discussed. The internal oxidation model is also proposed as a plausible stress corrosion cracking mechanism of Fe-17Cr-12Ni SS at that temperature.

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“…To improve the corrosion resistance of nuclear power equipment, austenitic stainless steel and nickel-based alloys are widely used as the structural materials in the primary circuit of pressurized water reactors (PWRs). Both austenitic stainless steel and nickel-based alloys, however, were found to be susceptible to stress corrosion cracking (SCC) by both laboratory experiment and field experience [1][2][3][4][5][6]. e SCC is typically associated with the combined effect of residual stress and working stress in a high-temperature water environment; such cracking can affect the reliability, integrity, and economy of PWRs and may become a potential service life-limiting issue [7].…”

Section: Introductionmentioning

confidence: 99%

An Approach to Estimate SCC Growing Rate in Slow Strain Rate Tensile Test Based on EPFEM

Wang

Xue

Cui

et al. 2019

Advances in Materials Science and Engineering

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The slow strain rate tensile test (SSRT) is a common means to investigate stress corrosion cracking (SCC) in key engineering structural materials of light-water reactors, and it is an important task to real-time monitor the crack growing length and rate of the specimen during the test. Because the specimen is placed in an autoclave with high-pressure and high-temperature water environment-simulated light-water reactor, the current potential drop method, which includes current potential drop (DCPD) and alternating current potential drop (ACPD), is the main means to real-time monitor crack growth rate in the SCC test. As a supplementary means to obtain the crack growth rate during the test, the SSRT process of nickel-based Alloy 600 CT specimens is investigated by using the elastic-plastic finite element method (EPFEM) in this paper. Based on the consideration that both the elastic-plastic deformation and crack length of the specimen would affect the relationship between the load and the displacement of the loading point during the SSRT test, the relationship between the loading point displacement caused by crack propagation ΔLc and plastic deformation ΔLp is separated by EPFEM. Then, the SCC crack growth rate and the real-time crack length are obtained. This proposed approach could be used to improve the test results in the SSRT test.

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Three-dimensional study of grain boundary engineering effects on intergranular stress corrosion cracking of 316 stainless steel in high temperature water

Cited by 44 publications

References 51 publications

X‐ray micro‐computed tomography analysis of accumulated corrosion products in deep‐water shipwrecks

X‐ray micro‐computed tomography analysis of accumulated corrosion products in deep‐water shipwrecks

Observation of internal oxidation in a 20% cold-worked Fe-17Cr-12Ni stainless steel through high-resolution characterization

An Approach to Estimate SCC Growing Rate in Slow Strain Rate Tensile Test Based on EPFEM

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