Investigation of microstructure changes in ODS-EUROFER after hydrogen loading

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • National Research Nuclear University
  • Karlsruhe Institute of Technology
  • Russian Research Centre Kurchatov Institute

Kuvaus

The effect of hydrogen on the microstructure of mechanically tested ODS-EUROFER steel was investigated by means of transmission electron microscopy, thermal desorption spectroscopy, and atomistic simulations. The presence of yttrium oxide particles notably increases hydrogen uptake in ODS-EUROFER steel as compared to ODS-free EUROFER 97. Under tensile loading, hydrogen accumulation promotes the loss of cohesion at the oxide particle interfaces. First-principles molecular dynamics simulations indicate that hydrogen can be trapped at nanoparticle/matrix interface, creating OH-groups. The accumulation of hydrogen atoms at the oxide particle surface can be the reason for the observed hydrogen-induced oxide/matrix interface weakening and de-cohesion under the action of external tensile stress. (c) 2015 Elsevier B.V. All rights reserved.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut355-359
Sivumäärä5
JulkaisuJournal of Nuclear Materials
Vuosikerta468
TilaJulkaistu - tammikuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 1515831