High resolution crystallographic and chemical characterisation of iodine induced stress corrosion crack tips formed in irradiated and non-irradiated zirconium alloys
التفاصيل البيبلوغرافية
العنوان:
High resolution crystallographic and chemical characterisation of iodine induced stress corrosion crack tips formed in irradiated and non-irradiated zirconium alloys
Gillen, C, Garner, A, Jones, C, Moore, K, Tejland, P & Frankel, P 2019, ' High resolution crystallographic and chemical characterisation of iodine induced stress corrosion crack tips formed in irradiated and non-irradiated zirconium alloys ', Journal of Nuclear Materials, vol. 519, pp. 166-172 . https://doi.org/10.1016/j.jnucmat.2019.03.027
High resolution crystallographic and chemical analysis has been performed on iodine-induced stress corrosion crack tips taken from irradiated and non-irradiated zirconium alloys. Defuelled cladding tubes were subjected to mandrel testing and subsequent analysis of the crack tip region showed the predominance of transgranular cracking on non-basal planes for the first time in irradiated material. In a separate mandrel-tested crack tip sample, iodine was unambiguously identified in the crack tip region using both STEM-EDX and NanoSIMS. For comparison, non-irradiated C-ring samples were subjected to testing in iodine-ethanol solution, subsequent crack tip analysis showed large levels of intergranular attack and no significant iodine segregation.