Abstract
The microstructure and distribution of Nb and Fe in a standard Zr-2.5Nb pressure tube alloy has been studied by analytical electron microscopy before and after irradiation (~ 5 × 10 25 n/ m 2; E > 1 MeV at 553 K). Irradiation produces pronounced changes in both the dislocation substructure and the chemical composition of the α and β-phases. Both 〈 a〉 and 〈 c〉-component defects are observed after irradiation; 〈 c〉-component screw dislocations are split after irradiation and are decorated by β Nb particles. There is copious precipitation of β Nb in the α-phase. Fe segregation is found at α-α subboundaries and in the β-phase prior to irradiation. After irradiation increased levels of Fe are observed at α-α subboundaries, while the β-phase is depleted of Fe.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
