Characterization of deformation structure in ion-irradiated stainless steels

Miura, Terumitsu; Fujii, K.; Fukuya, Koji; Ito, Y.

doi:10.1016/j.jnucmat.2008.12.093

Cited by 21 publications

(18 citation statements)

References 7 publications

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“…With increasing dose, a slight increase in average number density and diameter of Frank loops was observed in iron irradiated samples. The saturation in the Frank loop density and diameter observed for the 7 dpa sample seems consistent with the saturation in Frank loop density and size, reported in neutron [4,36,39] and ion irradiated samples [19,20,22,23,40] around 1 dpa and 5 dpa, respectively. Frank loop density was notably higher in proton irradiated sample compared to the iron irradiated samples despite a smaller irradiation dose in the former.…”

Section: Microstructuresupporting

confidence: 89%

“…Considering that plastic zone extends up to about 4e5 times the indent depth in ion irradiated samples [23,35,45], indents made at depths ! 0.6 mm are assumed to have a plastic zone extending up to depths > 2.5 mm (i.e.…”

Section: Irradiation Hardening From Nanoindentation Measurementsmentioning

confidence: 99%

“…Thus using linear fitting, which comes from the assumption of constant mechanical properties, for Fe irradiated samples was questionable. Saturation in density and size of irradiation induced defects has been reported around 5 dpa in ion irradiated austenitic stainless steels [19,20,22,23]. For the 7 dpa e Fe irradiated sample, it was then implicitly assumed that the mechanical properties were constant in the irradiated layer and hence, the hardness value determined could be seen as representative of the irradiated volume.…”

Section: Irradiation Hardening From Nanoindentation Measurementsmentioning

confidence: 99%

“…[16,22e24], authors have shown that dislocation channeling is the prime deformation mode for heavy ion irradiated austenitic stainless steel at PWR relevant temperature as well. However, the strain localization in case of heavy ion irradiated materials has been reported to be less intensive in comparison to its proton irradiated counterparts [16,23,24]. This has been attributed to the shallow penetration depth of heavy ions in austenitic stainless steel [16,23].…”

Section: Introductionmentioning

confidence: 99%

“…However, the strain localization in case of heavy ion irradiated materials has been reported to be less intensive in comparison to its proton irradiated counterparts [16,23,24]. This has been attributed to the shallow penetration depth of heavy ions in austenitic stainless steel [16,23]. In case of heavy ions, the displacement cascade produced is very similar to the neutron irradiation but it is confined to a very small volume of the material (depth of few mms for 10 MeV).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of ion irradiation effects on the microstructure, hardness, deformation and crack initiation behavior of austenitic stainless steel:Heavy ions vs protons

Gupta

Hure

Tanguy

et al. 2018

Journal of Nuclear Materials

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. Proton irradiation is generally used as a representative alternative of neutron irradiation to improve the current understanding of the mechanisms involved in IASCC. This study assesses the possibility of using heavy ions irradiation to evaluate IASCC mechanisms by comparing the irradiation induced modifications (in microstructure and mechanical properties) and cracking susceptibility of SA 304 L after both type of irradiations: Fe irradiation at 450 C and proton irradiation at 350 C. Irradiation-induced defects are characterized and quantified along with nano-hardness measurements, showing a correlation between irradiation hardening and density of Frank loops that is well captured by Orowan's formula. Both irradiations (iron and proton) increase the susceptibility of SA 304 L to intergranular cracking on subjection to Constant Extension Rate Tensile tests (CERT) in simulated nominal PWR primary water environment at 340 C. For these conditions, cracking susceptibility is found to be quantitatively similar for both irradiations, despite significant differences in hardening and degree of localization.

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Section: Microstructuresupporting

confidence: 89%

Section: Irradiation Hardening From Nanoindentation Measurementsmentioning

confidence: 99%

Section: Irradiation Hardening From Nanoindentation Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of ion irradiation effects on the microstructure, hardness, deformation and crack initiation behavior of austenitic stainless steel:Heavy ions vs protons

Gupta

Hure

Tanguy

et al. 2018

Journal of Nuclear Materials

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Charged‐Particle Irradiation for Neutron Radiation Damage Studies

Fluss¹,

Hosemann²,

Marian³

2012

Characterization of Materials

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The use of energetic charged‐particles are a useful experimental method for producing and studying radiation damage. In addition to producing displacement damage via Coulomb‐moderated ballistic collisions, charged‐particles can also be used to implant specific elements thus changing the chemical and compositional nature of the target material. Charged particle beam studies of radiation damage result in specimens that are usually not any more radioactive than prior to the irradiation. The specific aspect of charged‐particle irradiations that makes them a powerful tool for studying the physics of radiation damage accumulation is the high displacement and implantation rates and that the experimenter can vary important variables of the radiation environment. These include the energy and mass of the charged‐particle, the atomic number of the ion, the temperature, the dose and dose rate, and the mechanical stress of the specimen under test. Experiments can be designed to identify and understand the key mechanisms of radiation damage accumulation. Most importantly, the understanding gained from such experiments can inform and validate models that are then used to make science‐based predictions about material performance under other radiation conditions such as those encountered in a fission reactor or as might be expected in a fusion reactor. Particularly, useful examples of charged‐particle irradiation studies are those experiments that follow the growth of helium bubbles and cavities resulting from the combination of helium implantation and displacement damage

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Novel Technique for Quantitative Measurement of Localized Stresses Near Dislocation Channel—Grain Boundary Interaction Sites in Irradiated Stainless Steel

Johnson¹,

Was²

2017

The Minerals, Metals &Amp; Materials Series

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Characterization of deformation structure in ion-irradiated stainless steels

Cited by 21 publications

References 7 publications

Characterization of ion irradiation effects on the microstructure, hardness, deformation and crack initiation behavior of austenitic stainless steel:Heavy ions vs protons

Characterization of ion irradiation effects on the microstructure, hardness, deformation and crack initiation behavior of austenitic stainless steel:Heavy ions vs protons

Charged‐Particle Irradiation for Neutron Radiation Damage Studies

Novel Technique for Quantitative Measurement of Localized Stresses Near Dislocation Channel—Grain Boundary Interaction Sites in Irradiated Stainless Steel

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