Grain boundary segregation in neutron-irradiated 304 stainless steel studied by atom probe tomography

T. Toyama; Y. Nozawa; W. Van Renterghem; Y. Matsukawa; M. Hatakeyama; Y. Nagai; A. Al Mazouzi; S. Van Dyck

doi:10.1016/j.jnucmat.2011.11.072

Grain boundary segregation in neutron-irradiated 304 stainless steel studied by atom probe tomography

T. Toyama, Y. Nozawa, W. Van Renterghem, Y. Matsukawa, M. Hatakeyama, Y. Nagai, A. Al Mazouzi, S. Van Dyck

Research output › peer-review

Abstract

Radiation-induced segregation (RIS) of solute atoms at a grain boundary (GB) in 304 stainless steel (SS), neutron-irradiated to a dose of 24 dpa at 300°C in the fuel wrapper plates of a commercial pressurized water reactor, was investigated using laser-assisted atom probe tomography (APT). Ni, Si, and P enrichment and Cr and Fe depletion at the GB were evident. The full-width at half-maximum of the RIS region was ∼3 nm for the concentration profile peaks of Ni and Si. The atomic percentages of Ni, Si, and Cr at the GB were ∼19%, ∼7%, and ∼14%, respectively, in agreement with previously-reported values for neutron-irradiated SS. A high number density of intra-granular Ni-Si rich precipitates formed in the matrix. A precipitate-denuded zone with a width of ∼10 nm appeared on both sides of the GB.

Original language	English
Pages (from-to)	71-75
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	425
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2011.11.072
State	Published - Jun 2012

Funding

Funders	Funder number
Japan Society for the Promotion of Science	24246155, 22686058, 23760822, 21246142
Ministry of Education, Culture, Sports, Science and Technology

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

Access to Document

10.1016/j.jnucmat.2011.11.072

Cite this

@article{08506a510e744db385efd3e4060d056a,

title = "Grain boundary segregation in neutron-irradiated 304 stainless steel studied by atom probe tomography",

abstract = "Radiation-induced segregation (RIS) of solute atoms at a grain boundary (GB) in 304 stainless steel (SS), neutron-irradiated to a dose of 24 dpa at 300°C in the fuel wrapper plates of a commercial pressurized water reactor, was investigated using laser-assisted atom probe tomography (APT). Ni, Si, and P enrichment and Cr and Fe depletion at the GB were evident. The full-width at half-maximum of the RIS region was ∼3 nm for the concentration profile peaks of Ni and Si. The atomic percentages of Ni, Si, and Cr at the GB were ∼19%, ∼7%, and ∼14%, respectively, in agreement with previously-reported values for neutron-irradiated SS. A high number density of intra-granular Ni-Si rich precipitates formed in the matrix. A precipitate-denuded zone with a width of ∼10 nm appeared on both sides of the GB.",

keywords = "Irradiation, Austenitic stainless steel",

author = "T. Toyama and Y. Nozawa and {Van Renterghem}, W. and Y. Matsukawa and M. Hatakeyama and Y. Nagai and {Al Mazouzi}, A. and {Van Dyck}, S.",

year = "2012",

month = jun,

doi = "10.1016/j.jnucmat.2011.11.072",

language = "English",

volume = "425",

pages = "71--75",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "1-3",

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TY - JOUR

T1 - Grain boundary segregation in neutron-irradiated 304 stainless steel studied by atom probe tomography

AU - Toyama, T.

AU - Nozawa, Y.

AU - Van Renterghem, W.

AU - Matsukawa, Y.

AU - Hatakeyama, M.

AU - Nagai, Y.

AU - Al Mazouzi, A.

AU - Van Dyck, S.

PY - 2012/6

Y1 - 2012/6

N2 - Radiation-induced segregation (RIS) of solute atoms at a grain boundary (GB) in 304 stainless steel (SS), neutron-irradiated to a dose of 24 dpa at 300°C in the fuel wrapper plates of a commercial pressurized water reactor, was investigated using laser-assisted atom probe tomography (APT). Ni, Si, and P enrichment and Cr and Fe depletion at the GB were evident. The full-width at half-maximum of the RIS region was ∼3 nm for the concentration profile peaks of Ni and Si. The atomic percentages of Ni, Si, and Cr at the GB were ∼19%, ∼7%, and ∼14%, respectively, in agreement with previously-reported values for neutron-irradiated SS. A high number density of intra-granular Ni-Si rich precipitates formed in the matrix. A precipitate-denuded zone with a width of ∼10 nm appeared on both sides of the GB.

AB - Radiation-induced segregation (RIS) of solute atoms at a grain boundary (GB) in 304 stainless steel (SS), neutron-irradiated to a dose of 24 dpa at 300°C in the fuel wrapper plates of a commercial pressurized water reactor, was investigated using laser-assisted atom probe tomography (APT). Ni, Si, and P enrichment and Cr and Fe depletion at the GB were evident. The full-width at half-maximum of the RIS region was ∼3 nm for the concentration profile peaks of Ni and Si. The atomic percentages of Ni, Si, and Cr at the GB were ∼19%, ∼7%, and ∼14%, respectively, in agreement with previously-reported values for neutron-irradiated SS. A high number density of intra-granular Ni-Si rich precipitates formed in the matrix. A precipitate-denuded zone with a width of ∼10 nm appeared on both sides of the GB.

KW - Irradiation

KW - Austenitic stainless steel

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