Grain size threshold for enhanced irradiation resistance in nanocrystalline and ultrafine tungsten

O. El-Atwani; J. A. Hinks; G. Greaves; J. P. Allain; S. A. Maloy

doi:10.1080/21663831.2017.1292326

Grain size threshold for enhanced irradiation resistance in nanocrystalline and ultrafine tungsten

O. El-Atwani, J. A. Hinks, G. Greaves, J. P. Allain, S. A. Maloy

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109 Scopus citations

Abstract

Nanocrystalline metals are considered highly radiation-resistant materials due to their large grain boundary areas. Here, the existence of a grain size threshold for enhanced irradiation resistance in high-temperature helium-irradiated nanocrystalline and ultrafine tungsten is demonstrated. Average bubble density, projected bubble area and the corresponding change in volume were measured via transmission electron microscopy and plotted as a function of grain size for two ion fluences. Nanocrystalline grains of less than 35 nm size possess ∼10–20 times lower change in volume than ultrafine grains and this is discussed in terms of the grain boundaries defect sink efficiency.

Original language	English (US)
Pages (from-to)	343-349
Number of pages	7
Journal	Materials Research Letters
Volume	5
Issue number	5
DOIs	https://doi.org/10.1080/21663831.2017.1292326
State	Published - Sep 3 2017

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1080/21663831.2017.1292326

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title = "Grain size threshold for enhanced irradiation resistance in nanocrystalline and ultrafine tungsten",

abstract = "Nanocrystalline metals are considered highly radiation-resistant materials due to their large grain boundary areas. Here, the existence of a grain size threshold for enhanced irradiation resistance in high-temperature helium-irradiated nanocrystalline and ultrafine tungsten is demonstrated. Average bubble density, projected bubble area and the corresponding change in volume were measured via transmission electron microscopy and plotted as a function of grain size for two ion fluences. Nanocrystalline grains of less than 35 nm size possess ∼10–20 times lower change in volume than ultrafine grains and this is discussed in terms of the grain boundaries defect sink efficiency.",

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AU - El-Atwani, O.

AU - Hinks, J. A.

AU - Greaves, G.

AU - Allain, J. P.

AU - Maloy, S. A.

PY - 2017/9/3

Y1 - 2017/9/3

N2 - Nanocrystalline metals are considered highly radiation-resistant materials due to their large grain boundary areas. Here, the existence of a grain size threshold for enhanced irradiation resistance in high-temperature helium-irradiated nanocrystalline and ultrafine tungsten is demonstrated. Average bubble density, projected bubble area and the corresponding change in volume were measured via transmission electron microscopy and plotted as a function of grain size for two ion fluences. Nanocrystalline grains of less than 35 nm size possess ∼10–20 times lower change in volume than ultrafine grains and this is discussed in terms of the grain boundaries defect sink efficiency.

AB - Nanocrystalline metals are considered highly radiation-resistant materials due to their large grain boundary areas. Here, the existence of a grain size threshold for enhanced irradiation resistance in high-temperature helium-irradiated nanocrystalline and ultrafine tungsten is demonstrated. Average bubble density, projected bubble area and the corresponding change in volume were measured via transmission electron microscopy and plotted as a function of grain size for two ion fluences. Nanocrystalline grains of less than 35 nm size possess ∼10–20 times lower change in volume than ultrafine grains and this is discussed in terms of the grain boundaries defect sink efficiency.

UR - https://www.scopus.com/pages/publications/85013439663

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M3 - Article

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EP - 349

JO - Materials Research Letters

JF - Materials Research Letters

IS - 5

ER -

Grain size threshold for enhanced irradiation resistance in nanocrystalline and ultrafine tungsten

Abstract

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