Irradiation-induced changes of the atomic distributions around the interfaces of carbides in a nuclear reactor pressure vessel steel

T. Toyama; N. Tsuchiya; Y. Nagai; A. Almazouzi; M. Hatakeyama; M. Hasegawa; T. Ohkubo; E. Van Walle; R. Gerard

doi:10.1016/j.jnucmat.2010.08.011

Irradiation-induced changes of the atomic distributions around the interfaces of carbides in a nuclear reactor pressure vessel steel

T. Toyama^*, N. Tsuchiya, Y. Nagai, A. Almazouzi, M. Hatakeyama, M. Hasegawa, T. Ohkubo, E. Van Walle, R. Gerard

^*Corresponding author for this work

Materials Design and Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Irradiation-induced changes of the atomic distributions of solute and impurity elements around carbides in a reactor pressure vessel steel of a Belgium nuclear power reactor were investigated by laser-assisted local electrode-type three-dimensional atom probe, before and after in-service irradiation of 12 years. Before irradiation, nano-scale Fe-Mn-Cr-Mo carbides were found to be intragranular. The atomic distributions of Mn, Cr and Mo inside the carbide indicate that their concentrations around the inner carbide-matrix interface were enhanced, while a clear segregation of P at the interface was observed. After irradiation, the Mn concentration in the carbide increased substantially. In addition, the enhancement of Mn, Cr and Mo concentrations around the interface and the segregation of P were markedly intensified.

Original language	English
Pages (from-to)	177-180
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	405
Issue number	2
DOIs	https://doi.org/10.1016/j.jnucmat.2010.08.011
State	Published - 2010/10/15

ASJC Scopus subject areas

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

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title = "Irradiation-induced changes of the atomic distributions around the interfaces of carbides in a nuclear reactor pressure vessel steel",

abstract = "Irradiation-induced changes of the atomic distributions of solute and impurity elements around carbides in a reactor pressure vessel steel of a Belgium nuclear power reactor were investigated by laser-assisted local electrode-type three-dimensional atom probe, before and after in-service irradiation of 12 years. Before irradiation, nano-scale Fe-Mn-Cr-Mo carbides were found to be intragranular. The atomic distributions of Mn, Cr and Mo inside the carbide indicate that their concentrations around the inner carbide-matrix interface were enhanced, while a clear segregation of P at the interface was observed. After irradiation, the Mn concentration in the carbide increased substantially. In addition, the enhancement of Mn, Cr and Mo concentrations around the interface and the segregation of P were markedly intensified.",

author = "T. Toyama and N. Tsuchiya and Y. Nagai and A. Almazouzi and M. Hatakeyama and M. Hasegawa and T. Ohkubo and {Van Walle}, E. and R. Gerard",

year = "2010",

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day = "15",

doi = "10.1016/j.jnucmat.2010.08.011",

language = "英語",

volume = "405",

pages = "177--180",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Irradiation-induced changes of the atomic distributions around the interfaces of carbides in a nuclear reactor pressure vessel steel

AU - Toyama, T.

AU - Tsuchiya, N.

AU - Nagai, Y.

AU - Almazouzi, A.

AU - Hatakeyama, M.

AU - Hasegawa, M.

AU - Ohkubo, T.

AU - Van Walle, E.

AU - Gerard, R.

PY - 2010/10/15

Y1 - 2010/10/15

N2 - Irradiation-induced changes of the atomic distributions of solute and impurity elements around carbides in a reactor pressure vessel steel of a Belgium nuclear power reactor were investigated by laser-assisted local electrode-type three-dimensional atom probe, before and after in-service irradiation of 12 years. Before irradiation, nano-scale Fe-Mn-Cr-Mo carbides were found to be intragranular. The atomic distributions of Mn, Cr and Mo inside the carbide indicate that their concentrations around the inner carbide-matrix interface were enhanced, while a clear segregation of P at the interface was observed. After irradiation, the Mn concentration in the carbide increased substantially. In addition, the enhancement of Mn, Cr and Mo concentrations around the interface and the segregation of P were markedly intensified.

AB - Irradiation-induced changes of the atomic distributions of solute and impurity elements around carbides in a reactor pressure vessel steel of a Belgium nuclear power reactor were investigated by laser-assisted local electrode-type three-dimensional atom probe, before and after in-service irradiation of 12 years. Before irradiation, nano-scale Fe-Mn-Cr-Mo carbides were found to be intragranular. The atomic distributions of Mn, Cr and Mo inside the carbide indicate that their concentrations around the inner carbide-matrix interface were enhanced, while a clear segregation of P at the interface was observed. After irradiation, the Mn concentration in the carbide increased substantially. In addition, the enhancement of Mn, Cr and Mo concentrations around the interface and the segregation of P were markedly intensified.

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U2 - 10.1016/j.jnucmat.2010.08.011

DO - 10.1016/j.jnucmat.2010.08.011

M3 - 学術論文

AN - SCOPUS:77956616796

SN - 0022-3115

VL - 405

SP - 177

EP - 180

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 2

ER -

Irradiation-induced changes of the atomic distributions around the interfaces of carbides in a nuclear reactor pressure vessel steel

Abstract

ASJC Scopus subject areas

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