Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load

Y. Hamaji; H. T. Lee; A. Kreter; S. Möller; M. Rasinski; M. Tokitani; S. Masuzaki; A. Sagara; M. Oya; K. Ibano; Y. Ueda; R. Sakamoto

doi:10.1016/j.nme.2016.11.003

Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load

Y. Hamaji, H. T. Lee, A. Kreter, S. Möller, M. Rasinski, M. Tokitani, S. Masuzaki, A. Sagara, M. Oya, K. Ibano, Y. Ueda, R. Sakamoto

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

7 Citations (Scopus)

Abstract

Surface morphology and hydrogen isotope retention of W specimen melted with vertical displacement event-like heat load and subsequent deuterium (D) plasma exposure were studied. Applied heat loads using electron beam without raster scanning were about 190 and 230 MW/m² in heat flux and 0.08, 0.12 and 0.16 s in duration. After the heat load application, specimens showed apparent melting spots with grain growth or dense micrometer scale convex structure. Cracks were observed only in the part with the convex structure. D retention in the melted part of specimens was not significantly larger than in the reference specimen despite large changes of surface characteristics.

Original language	English
Pages (from-to)	1303-1307
Number of pages	5
Journal	Nuclear Materials and Energy
Volume	12
DOIs	https://doi.org/10.1016/j.nme.2016.11.003
Publication status	Published - Aug 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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10.1016/j.nme.2016.11.003

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Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load. / Hamaji, Y.; Lee, H. T.; Kreter, A.; Möller, S.; Rasinski, M.; Tokitani, M.; Masuzaki, S.; Sagara, A.; Oya, M.; Ibano, K.; Ueda, Y.; Sakamoto, R.

In: Nuclear Materials and Energy, Vol. 12, 08.2017, p. 1303-1307.

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

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abstract = "Surface morphology and hydrogen isotope retention of W specimen melted with vertical displacement event-like heat load and subsequent deuterium (D) plasma exposure were studied. Applied heat loads using electron beam without raster scanning were about 190 and 230 MW/m2 in heat flux and 0.08, 0.12 and 0.16 s in duration. After the heat load application, specimens showed apparent melting spots with grain growth or dense micrometer scale convex structure. Cracks were observed only in the part with the convex structure. D retention in the melted part of specimens was not significantly larger than in the reference specimen despite large changes of surface characteristics.",

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AU - Hamaji, Y.

AU - Lee, H. T.

AU - Kreter, A.

AU - Möller, S.

AU - Rasinski, M.

AU - Tokitani, M.

AU - Masuzaki, S.

AU - Sagara, A.

AU - Oya, M.

AU - Ibano, K.

AU - Ueda, Y.

AU - Sakamoto, R.

PY - 2017/8

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AB - Surface morphology and hydrogen isotope retention of W specimen melted with vertical displacement event-like heat load and subsequent deuterium (D) plasma exposure were studied. Applied heat loads using electron beam without raster scanning were about 190 and 230 MW/m2 in heat flux and 0.08, 0.12 and 0.16 s in duration. After the heat load application, specimens showed apparent melting spots with grain growth or dense micrometer scale convex structure. Cracks were observed only in the part with the convex structure. D retention in the melted part of specimens was not significantly larger than in the reference specimen despite large changes of surface characteristics.

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Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load

Abstract

All Science Journal Classification (ASJC) codes

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