Effect of He implantation on the microstructure of zircaloy-4 studied using in situ TEM

Tunes, Matheus A., Harrison, Robert W., Greaves, Graeme, Hinks, J. A. and Donnelly, S. E. (2017) Effect of He implantation on the microstructure of zircaloy-4 studied using in situ TEM. Journal of Nuclear Materials. ISSN 0022-3115

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Abstract

Highlights

• Differences in the evolution of α and βZr microstructures under 6 keV He ion implantation have been analysed as a function of irradiation dose and temperature using in situ TEM.
• Both thermal and irradiation stabilities of Zr hydrides particles were studied and were found to dissolve with increasing fluence.
• It is suggested that the combination of two different mass-transport mechanisms for He in zircaloy-4 play a major rule in the Zr hydride irradiation-induced dissolution.
• He bubble lattices were observed to form during irradiation at 473 K and 1148 K in both crystalline phases, α and βZr, at around the same fluence of 1.7×10^17 ions⋅cm−2 (3.2 dpa).

Item Type:	Article
Subjects:	Q Science > QC Physics
Schools:	School of Computing and Engineering > Electron Microscopy and Materials Analysis School of Computing and Engineering
Related URLs:	Author Author Author Author
Depositing User:	Matheus Araujo Tunes
Date Deposited:	20 Jun 2017 12:03
Last Modified:	20 Jun 2017 12:09
URI:	http://eprints.hud.ac.uk/id/eprint/32270

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