Stability of Y‐Ti‐O nanoparticles in ODS alloys during heat treatment and high temperature swift heavy ion irradiation

Vladimir A. Skuratov, Alexander S. Sohatsky, Jacques Herman O'Connell, K.A. Kornieieva, A. A. Nikitina, Johannes Henoch Neethling, V. S. Ageev, Maxim Vladimirovich Zdorovets, Alexey Volkov

2016

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DOI 10.1002/pssc.201600080

Data confidence 70 medium

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Abstract

Abstract Aim of this report is to compare the morphology of swift (167 and 220 MeV) Xe ion induced latent tracks in Y2Ti2O7 nanoparticles during post‐irradiation heat treatment and after irradiation at different temperatures in pre‐thinned TEM foils and TEM targets prepared from hundreds microns thick irradiated oxide dispersion strengthened (ODS) steel. No difference in track parameters was found in room temperature irradiated nanoparticles in pre‐thinned and conventional samples. Microstructural data gathered from pre‐thinned foils irradiated in the temperature range 350‐650 °C or annealed at similar temperatures demonstrate that amorphous latent tracks interact with the surrounding matrix, changing the track and nanoparticle morphology, while such effect is not observed in conventional ODS material treated at the same conditions. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)