Irradiation-induced precipitation in V-4Cr-4Ti alloys studied using three-dimensional atom probe

M. Hatakeyama; T. Nagasaka; T. Muroga; T. Toyama; I. Yamagata

doi:10.1016/j.jnucmat.2013.01.320

Irradiation-induced precipitation in V-4Cr-4Ti alloys studied using three-dimensional atom probe

M. Hatakeyama, T. Nagasaka, T. Muroga, T. Toyama, I. Yamagata

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

6 Citations (Scopus)

Abstract

To investigate neutron irradiation effects on the precipitation behavior of Ti(O,N,C) in V-4Cr-4Ti alloy, chemical and structural analyses were conducted using a laser-assisted local electrode three-dimensional atom probe. Ti(O,N,C) precipitates were observed after irradiation at 333 and 673 K. These NaCl-type precipitates mostly consisted of V, Ti, Cr, O, and C. The chemical composition of the precipitate was estimated as about V₃₉Cr₂Ti ₅CO₃ at both irradiation temperatures. This result suggests that most of the Ti sublattice presumed to be replaced by V and O, N, and C sublattice are instead occupied by vacancies. Therefore, compositionally modified V₃₉Cr₂Ti₅CO₃ precipitates might form with larger volume fractions than TiO precipitates.

Original language	English
Pages (from-to)	s346-s349
Journal	Journal of Nuclear Materials
Volume	442
Issue number	1-3 SUPPL.1
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.320
Publication status	Published - 2013

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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@article{6420a0a7451244c3961a580e42d4e80d,

title = "Irradiation-induced precipitation in V-4Cr-4Ti alloys studied using three-dimensional atom probe",

abstract = "To investigate neutron irradiation effects on the precipitation behavior of Ti(O,N,C) in V-4Cr-4Ti alloy, chemical and structural analyses were conducted using a laser-assisted local electrode three-dimensional atom probe. Ti(O,N,C) precipitates were observed after irradiation at 333 and 673 K. These NaCl-type precipitates mostly consisted of V, Ti, Cr, O, and C. The chemical composition of the precipitate was estimated as about V39Cr2Ti 5CO3 at both irradiation temperatures. This result suggests that most of the Ti sublattice presumed to be replaced by V and O, N, and C sublattice are instead occupied by vacancies. Therefore, compositionally modified V39Cr2Ti5CO3 precipitates might form with larger volume fractions than TiO precipitates.",

author = "M. Hatakeyama and T. Nagasaka and T. Muroga and T. Toyama and I. Yamagata",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.320",

language = "English",

volume = "442",

pages = "s346--s349",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "1-3 SUPPL.1",

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TY - JOUR

T1 - Irradiation-induced precipitation in V-4Cr-4Ti alloys studied using three-dimensional atom probe

AU - Hatakeyama, M.

AU - Nagasaka, T.

AU - Muroga, T.

AU - Toyama, T.

AU - Yamagata, I.

PY - 2013

Y1 - 2013

N2 - To investigate neutron irradiation effects on the precipitation behavior of Ti(O,N,C) in V-4Cr-4Ti alloy, chemical and structural analyses were conducted using a laser-assisted local electrode three-dimensional atom probe. Ti(O,N,C) precipitates were observed after irradiation at 333 and 673 K. These NaCl-type precipitates mostly consisted of V, Ti, Cr, O, and C. The chemical composition of the precipitate was estimated as about V39Cr2Ti 5CO3 at both irradiation temperatures. This result suggests that most of the Ti sublattice presumed to be replaced by V and O, N, and C sublattice are instead occupied by vacancies. Therefore, compositionally modified V39Cr2Ti5CO3 precipitates might form with larger volume fractions than TiO precipitates.

AB - To investigate neutron irradiation effects on the precipitation behavior of Ti(O,N,C) in V-4Cr-4Ti alloy, chemical and structural analyses were conducted using a laser-assisted local electrode three-dimensional atom probe. Ti(O,N,C) precipitates were observed after irradiation at 333 and 673 K. These NaCl-type precipitates mostly consisted of V, Ti, Cr, O, and C. The chemical composition of the precipitate was estimated as about V39Cr2Ti 5CO3 at both irradiation temperatures. This result suggests that most of the Ti sublattice presumed to be replaced by V and O, N, and C sublattice are instead occupied by vacancies. Therefore, compositionally modified V39Cr2Ti5CO3 precipitates might form with larger volume fractions than TiO precipitates.

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