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El-Atwani, O., Hinks, J. A., Greaves, Graeme, Allain, J. P. and Maloy, S. A. (2017) Grain size threshold for enhanced irradiation resistance in nanocrystalline and ultrafine tungsten. Materials Research Letters, 5 (5). pp. 343-349. ISSN 2166-3831
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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
| Item Type: | Article |
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| Subjects: | Q Science > QC Physics |
| Schools: | School of Computing and Engineering School of Computing and Engineering > Electron Microscopy and Materials Analysis |
| Related URLs: | |
| Depositing User: | Jonathan Hinks |
| Date Deposited: | 22 Jun 2017 08:01 |
| Last Modified: | 26 Mar 2018 18:15 |
| URI: | http://eprints.hud.ac.uk/id/eprint/32275 |
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