Ion beam induced spinodal decomposition and amorphization in the immiscible bilayer system UMo/Mg

H. Y. Chiang; M. Döblinger; S. H. Park; L. Beck; W. Petry

doi:10.1016/j.jnucmat.2014.06.036

Ion beam induced spinodal decomposition and amorphization in the immiscible bilayer system UMo/Mg

H. Y. Chiang, M. Döblinger, S. H. Park, L. Beck, W. Petry

Department of Physics

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

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Abstract

High density fuel uranium–molybdenum (UMo) alloy embedded in an Mg matrix has been investigated as a candidate material for high density fuel of research reactors. UMo/Mg bilayers were prepared and irradiated with swift heavy ions to simulate damages created by fission fragments during in-pile irradiation. Scanning transmission electron microscopy and X-ray microdiffraction reveal the micro-structural evolution during irradiation including amorphization and spinodal decomposition. Spinodal decomposition during irradiation results in a chessboard-like pattern with a U-rich and a U-poor phase. In addition, an irradiation-induced phase U_0.9Mg_0.1 has been found. In comparison to UMo embedded in an Al matrix, the diffusion reactions and the amorphous region are well detained.

Original language	English
Pages (from-to)	41-47
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	453
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2014.06.036
State	Published - Oct 2014

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title = "Ion beam induced spinodal decomposition and amorphization in the immiscible bilayer system UMo/Mg",

abstract = "High density fuel uranium–molybdenum (UMo) alloy embedded in an Mg matrix has been investigated as a candidate material for high density fuel of research reactors. UMo/Mg bilayers were prepared and irradiated with swift heavy ions to simulate damages created by fission fragments during in-pile irradiation. Scanning transmission electron microscopy and X-ray microdiffraction reveal the micro-structural evolution during irradiation including amorphization and spinodal decomposition. Spinodal decomposition during irradiation results in a chessboard-like pattern with a U-rich and a U-poor phase. In addition, an irradiation-induced phase U0.9Mg0.1 has been found. In comparison to UMo embedded in an Al matrix, the diffusion reactions and the amorphous region are well detained.",

author = "Chiang, {H. Y.} and M. D{\"o}blinger and Park, {S. H.} and L. Beck and W. Petry",

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T1 - Ion beam induced spinodal decomposition and amorphization in the immiscible bilayer system UMo/Mg

AU - Chiang, H. Y.

AU - Döblinger, M.

AU - Park, S. H.

AU - Beck, L.

AU - Petry, W.

PY - 2014/10

Y1 - 2014/10

N2 - High density fuel uranium–molybdenum (UMo) alloy embedded in an Mg matrix has been investigated as a candidate material for high density fuel of research reactors. UMo/Mg bilayers were prepared and irradiated with swift heavy ions to simulate damages created by fission fragments during in-pile irradiation. Scanning transmission electron microscopy and X-ray microdiffraction reveal the micro-structural evolution during irradiation including amorphization and spinodal decomposition. Spinodal decomposition during irradiation results in a chessboard-like pattern with a U-rich and a U-poor phase. In addition, an irradiation-induced phase U0.9Mg0.1 has been found. In comparison to UMo embedded in an Al matrix, the diffusion reactions and the amorphous region are well detained.

AB - High density fuel uranium–molybdenum (UMo) alloy embedded in an Mg matrix has been investigated as a candidate material for high density fuel of research reactors. UMo/Mg bilayers were prepared and irradiated with swift heavy ions to simulate damages created by fission fragments during in-pile irradiation. Scanning transmission electron microscopy and X-ray microdiffraction reveal the micro-structural evolution during irradiation including amorphization and spinodal decomposition. Spinodal decomposition during irradiation results in a chessboard-like pattern with a U-rich and a U-poor phase. In addition, an irradiation-induced phase U0.9Mg0.1 has been found. In comparison to UMo embedded in an Al matrix, the diffusion reactions and the amorphous region are well detained.

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Ion beam induced spinodal decomposition and amorphization in the immiscible bilayer system UMo/Mg

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