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

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",

}

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

UR - https://www.scopus.com/pages/publications/84860483402

U2 - 10.1016/j.jnucmat.2011.11.072

DO - 10.1016/j.jnucmat.2011.11.072

M3 - Article

AN - SCOPUS:84860483402

SN - 0022-3115

VL - 425

SP - 71

EP - 75

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -