Effect of high fluence Au ion irradiation on nanocrystalline tungsten film

Hongwei Wang; Yuan Gao; Engang Fu; Tengfei Yang; Sha Yan; Jianming Xue; Paul K. Chu; Yugang Wang

doi:10.1016/j.jnucmat.2013.08.036

Effect of high fluence Au ion irradiation on nanocrystalline tungsten film

Hongwei Wang, Yuan Gao, Engang Fu, Tengfei Yang, Sha Yan, Jianming Xue, Paul K. Chu, Yugang Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

Abstract

Irradiation-induced microstructure evolution and phase transformation have been studied on the nanocrystalline tungsten film with simple cubic structure (β phase). The samples were irradiated by 4 MeV Au ions at different fluences ranging from 6 × 10¹⁴ to 1 × 10¹⁶ ions/cm², corresponding to the peak damage levels from 6 to 100 dpa (displacements per atom). Analysis by GIXRD and TEM reveals that the structure of tungsten film undergoes a distinct transition from simple cubic phase to bcc phase when the fluence is above 3 × 10¹⁵ ions/cm² (30 dpa) and grain growth occurs with the increasing fluence. Radiation-induced small voids are clearly observed in the interior of coarsened grains at the highest fluence, 1 × 10¹⁶ ions/cm² (100 dpa). © 2013 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	189-194
Journal	Journal of Nuclear Materials
Volume	442
Issue number	1-3
Online published	29 Aug 2013
DOIs	https://doi.org/10.1016/j.jnucmat.2013.08.036
Publication status	Published - Nov 2013

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title = "Effect of high fluence Au ion irradiation on nanocrystalline tungsten film",

abstract = "Irradiation-induced microstructure evolution and phase transformation have been studied on the nanocrystalline tungsten film with simple cubic structure (β phase). The samples were irradiated by 4 MeV Au ions at different fluences ranging from 6 × 1014 to 1 × 1016 ions/cm2, corresponding to the peak damage levels from 6 to 100 dpa (displacements per atom). Analysis by GIXRD and TEM reveals that the structure of tungsten film undergoes a distinct transition from simple cubic phase to bcc phase when the fluence is above 3 × 1015 ions/cm2 (30 dpa) and grain growth occurs with the increasing fluence. Radiation-induced small voids are clearly observed in the interior of coarsened grains at the highest fluence, 1 × 1016 ions/cm2 (100 dpa). {\textcopyright} 2013 Elsevier B.V. All rights reserved.",

author = "Hongwei Wang and Yuan Gao and Engang Fu and Tengfei Yang and Sha Yan and Jianming Xue and Chu, {Paul K.} and Yugang Wang",

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TY - JOUR

T1 - Effect of high fluence Au ion irradiation on nanocrystalline tungsten film

AU - Wang, Hongwei

AU - Gao, Yuan

AU - Fu, Engang

AU - Yang, Tengfei

AU - Yan, Sha

AU - Xue, Jianming

AU - Chu, Paul K.

AU - Wang, Yugang

PY - 2013/11

Y1 - 2013/11

N2 - Irradiation-induced microstructure evolution and phase transformation have been studied on the nanocrystalline tungsten film with simple cubic structure (β phase). The samples were irradiated by 4 MeV Au ions at different fluences ranging from 6 × 1014 to 1 × 1016 ions/cm2, corresponding to the peak damage levels from 6 to 100 dpa (displacements per atom). Analysis by GIXRD and TEM reveals that the structure of tungsten film undergoes a distinct transition from simple cubic phase to bcc phase when the fluence is above 3 × 1015 ions/cm2 (30 dpa) and grain growth occurs with the increasing fluence. Radiation-induced small voids are clearly observed in the interior of coarsened grains at the highest fluence, 1 × 1016 ions/cm2 (100 dpa). © 2013 Elsevier B.V. All rights reserved.

AB - Irradiation-induced microstructure evolution and phase transformation have been studied on the nanocrystalline tungsten film with simple cubic structure (β phase). The samples were irradiated by 4 MeV Au ions at different fluences ranging from 6 × 1014 to 1 × 1016 ions/cm2, corresponding to the peak damage levels from 6 to 100 dpa (displacements per atom). Analysis by GIXRD and TEM reveals that the structure of tungsten film undergoes a distinct transition from simple cubic phase to bcc phase when the fluence is above 3 × 1015 ions/cm2 (30 dpa) and grain growth occurs with the increasing fluence. Radiation-induced small voids are clearly observed in the interior of coarsened grains at the highest fluence, 1 × 1016 ions/cm2 (100 dpa). © 2013 Elsevier B.V. All rights reserved.

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DO - 10.1016/j.jnucmat.2013.08.036

M3 - RGC 21 - Publication in refereed journal

SN - 0022-3115

VL - 442

SP - 189

EP - 194

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Effect of high fluence Au ion irradiation on nanocrystalline tungsten film

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