The diffusion behaviors of interstitial impurities in V-4Cr-4Ti alloys under ion irradiation

M. Hatakeyama; S. Tamura; T. Muroga; N. Yoshida; M. Hasegawa; H. Matsui

doi:10.1016/j.jnucmat.2007.03.187

The diffusion behaviors of interstitial impurities in V-4Cr-4Ti alloys under ion irradiation

M. Hatakeyama^*, S. Tamura, T. Muroga, N. Yoshida, M. Hasegawa, H. Matsui

^*Corresponding author for this work

Materials Design and Engineering

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

12 Scopus citations

Abstract

NIFS HEAT-1 and four types of the V-4Cr-4Ti alloys with different oxygen and nitrogen content were irradiated with Cu²⁺ ions at 973 K up to dose of 10 dpa. In this irradiation condition, the flux of oxygen, which through the surface is estimated about 2-4 × 10¹⁶ (s m²)^-1, and the oxygen levels in specimens are calculated by finite difference method. In the cases of high purity specimens, oxygen diffused from the surface into the irradiated region. Moreover, oxygen diffused from the back of the irradiated surface into the irradiated region and enhanced the precipitations at the irradiated region. It is shown that the initial impurity level and flux of oxygen, which diffused from the atmosphere, essentially limited the precipitation behavior.

Original language	English
Pages (from-to)	882-886
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	367-370 A
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2007.03.187
State	Published - 2007/08/01

ASJC Scopus subject areas

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

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@article{e950426a634b43c8baea3bd11b41ae03,

title = "The diffusion behaviors of interstitial impurities in V-4Cr-4Ti alloys under ion irradiation",

abstract = "NIFS HEAT-1 and four types of the V-4Cr-4Ti alloys with different oxygen and nitrogen content were irradiated with Cu2+ ions at 973 K up to dose of 10 dpa. In this irradiation condition, the flux of oxygen, which through the surface is estimated about 2-4 × 1016 (s m2)-1, and the oxygen levels in specimens are calculated by finite difference method. In the cases of high purity specimens, oxygen diffused from the surface into the irradiated region. Moreover, oxygen diffused from the back of the irradiated surface into the irradiated region and enhanced the precipitations at the irradiated region. It is shown that the initial impurity level and flux of oxygen, which diffused from the atmosphere, essentially limited the precipitation behavior.",

author = "M. Hatakeyama and S. Tamura and T. Muroga and N. Yoshida and M. Hasegawa and H. Matsui",

year = "2007",

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language = "英語",

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T1 - The diffusion behaviors of interstitial impurities in V-4Cr-4Ti alloys under ion irradiation

AU - Hatakeyama, M.

AU - Tamura, S.

AU - Muroga, T.

AU - Yoshida, N.

AU - Hasegawa, M.

AU - Matsui, H.

PY - 2007/8/1

Y1 - 2007/8/1

N2 - NIFS HEAT-1 and four types of the V-4Cr-4Ti alloys with different oxygen and nitrogen content were irradiated with Cu2+ ions at 973 K up to dose of 10 dpa. In this irradiation condition, the flux of oxygen, which through the surface is estimated about 2-4 × 1016 (s m2)-1, and the oxygen levels in specimens are calculated by finite difference method. In the cases of high purity specimens, oxygen diffused from the surface into the irradiated region. Moreover, oxygen diffused from the back of the irradiated surface into the irradiated region and enhanced the precipitations at the irradiated region. It is shown that the initial impurity level and flux of oxygen, which diffused from the atmosphere, essentially limited the precipitation behavior.

AB - NIFS HEAT-1 and four types of the V-4Cr-4Ti alloys with different oxygen and nitrogen content were irradiated with Cu2+ ions at 973 K up to dose of 10 dpa. In this irradiation condition, the flux of oxygen, which through the surface is estimated about 2-4 × 1016 (s m2)-1, and the oxygen levels in specimens are calculated by finite difference method. In the cases of high purity specimens, oxygen diffused from the surface into the irradiated region. Moreover, oxygen diffused from the back of the irradiated surface into the irradiated region and enhanced the precipitations at the irradiated region. It is shown that the initial impurity level and flux of oxygen, which diffused from the atmosphere, essentially limited the precipitation behavior.

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DO - 10.1016/j.jnucmat.2007.03.187

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SN - 0022-3115

VL - 367-370 A

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SPEC. ISS.

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The diffusion behaviors of interstitial impurities in V-4Cr-4Ti alloys under ion irradiation

Abstract

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