Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation

Research output: Contribution to journalArticle

  • External authors:
  • Andrea Impagnatiello
  • Samir De Moraes Shubeita
  • Paul Wady
  • Iuliia Ipatova
  • Huw Dawson
  • Chiara Barcellini


We have characterised to atomic resolution the mono-layer thick TiO-type precipitate induced by proton irradiation in V-4Cr-4Ti alloy at a dose of 0.3dpa and a temperature of 350C. Its formation coincides with the coarsening radiation-induced interstitial a/2⟨111⟩ dislocation loops that are already present at 300C. The dislocation network induced by prior cold work is mostly recovered at 300C and 0.3dpa, and is therefore expected to exert a minimal effect on the precipitate formation. This monolayer-thick precipitate constitutes an early stage in the radiation-induced aging process of V-4Cr-4Ti at low temperatures, and can potentially absorb additional light elements in reactor environments.

Bibliographical metadata

Original languageEnglish
Pages (from-to)174–177
JournalScripta Materialia
Early online date9 Dec 2016
StatePublished - 15 Mar 2017