The microstructure of laser welded Y doped V-4Cr-4Ti alloys after ion irradiation

H. Watanabe; A. Higashijima; N. Yoshida; T. Nagasaka; T. Muroga

doi:10.1016/j.jnucmat.2008.12.186

The microstructure of laser welded Y doped V-4Cr-4Ti alloys after ion irradiation

H. Watanabe, A. Higashijima, N. Yoshida, T. Nagasaka, T. Muroga

Division of Nuclear Fusion Dynamics

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

4 Citations (Scopus)

Abstract

Laser welded V-4Cr-4Ti-0.15Y alloy, fabricated by National Institute for Fusion Science (NIFS), was used in this study. Copper ion irradiation was carried out with the tandem accelerator at Kyushu University. The TEM samples were sliced from the welded materials and irradiated at 873 K up to the dose of 12 dpa. The microstructure before the irradiation showed that relatively large precipitates, which were commonly observed in the alloy, disappeared in the center of the weld metal. After the ion irradiation, fine titanium oxides with {1 0 0} habit planes were detected. However, in all irradiation doses, the growth of titanium oxides was suppressed by Y addition.

Original language	English
Pages (from-to)	598-601
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	386-388
Issue number	C
DOIs	https://doi.org/10.1016/j.jnucmat.2008.12.186
Publication status	Published - Apr 30 2009

All Science Journal Classification (ASJC) codes

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

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10.1016/j.jnucmat.2008.12.186

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title = "The microstructure of laser welded Y doped V-4Cr-4Ti alloys after ion irradiation",

abstract = "Laser welded V-4Cr-4Ti-0.15Y alloy, fabricated by National Institute for Fusion Science (NIFS), was used in this study. Copper ion irradiation was carried out with the tandem accelerator at Kyushu University. The TEM samples were sliced from the welded materials and irradiated at 873 K up to the dose of 12 dpa. The microstructure before the irradiation showed that relatively large precipitates, which were commonly observed in the alloy, disappeared in the center of the weld metal. After the ion irradiation, fine titanium oxides with {1 0 0} habit planes were detected. However, in all irradiation doses, the growth of titanium oxides was suppressed by Y addition.",

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T1 - The microstructure of laser welded Y doped V-4Cr-4Ti alloys after ion irradiation

AU - Watanabe, H.

AU - Higashijima, A.

AU - Yoshida, N.

AU - Nagasaka, T.

AU - Muroga, T.

PY - 2009/4/30

Y1 - 2009/4/30

N2 - Laser welded V-4Cr-4Ti-0.15Y alloy, fabricated by National Institute for Fusion Science (NIFS), was used in this study. Copper ion irradiation was carried out with the tandem accelerator at Kyushu University. The TEM samples were sliced from the welded materials and irradiated at 873 K up to the dose of 12 dpa. The microstructure before the irradiation showed that relatively large precipitates, which were commonly observed in the alloy, disappeared in the center of the weld metal. After the ion irradiation, fine titanium oxides with {1 0 0} habit planes were detected. However, in all irradiation doses, the growth of titanium oxides was suppressed by Y addition.

AB - Laser welded V-4Cr-4Ti-0.15Y alloy, fabricated by National Institute for Fusion Science (NIFS), was used in this study. Copper ion irradiation was carried out with the tandem accelerator at Kyushu University. The TEM samples were sliced from the welded materials and irradiated at 873 K up to the dose of 12 dpa. The microstructure before the irradiation showed that relatively large precipitates, which were commonly observed in the alloy, disappeared in the center of the weld metal. After the ion irradiation, fine titanium oxides with {1 0 0} habit planes were detected. However, in all irradiation doses, the growth of titanium oxides was suppressed by Y addition.

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The microstructure of laser welded Y doped V-4Cr-4Ti alloys after ion irradiation

Abstract

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