Stability of Nanoparticles in an Oxide Dispersion Strengthened Steel Articles uri icon

publication date

  • May 2010

start page

  • 121071

end page

  • 121074


  • 1


  • 241

International Standard Serial Number (ISSN)

  • 1742-6588

Electronic International Standard Serial Number (EISSN)

  • 1742-6596


  • Oxide Dispersion-Strengthened (ODS) reduced-activation ferritic/martensitic steels are strong candidates for structural applications in the first wall and blanket of future fusion reactors. In
    the present work, a model ODS alloy based on a Fe-Cr matrix has been
    produced in order to gain insight into the processes which occur during
    processing and after high-energy ion irradiation. The model ODS alloy
    has been characterized by Energy Dispersive X-Ray and Electron Energy
    Loss Spectroscopy and Energy Filtered Transmission Electron Microscopy,
    focusing on the evolution of the nanoparticle dispersion and the
    chemical composition of individual nanoparticles. The chemical analyses
    reveal that there are three different kinds of nanoparticles in the
    alloys. Particle sizes, distributions and morphologies are not changed
    significantly by irradiation up to doses of ~ 7 dpa.