Void swelling in ferritic-martensitic steels under high dose ion irradiation: Exploring possible contributions to swelling resistance. (February 2016)

• Record Type: Journal Article
• Authors: Wang, Xu; Yan, Qingzhi; Was, Gary S.; Wang, Lumin
• Is Part Of: Scripta materialia. Volume 112(2016)
• Page Start: 9
• Page End: 14
• Publication Date: 2016-02
• Subjects: Ion irradiation -- Ferritic-martensitic steel -- Void swelling -- Transmission electron microscope (TEM) -- CNS; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.08.032
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Swelling results of CNS preimplanted with 10 appm and 100 appm helium irradiated to 375 dpa and 450 dpa with 5 MeV Fe ++ at 460 °C. Abstract: Ion irradiations were performed on reduced-activation ferritic-martensitic steels CNS (China Nuclear Steel) I and CNS II up to 375 dpa and 450 dpa at 460 °C using 5 MeV Fe ++ ions with 10 appm and 100 appm pre-implanted helium. The swelling of 9Cr CNS I was 5.7–9%, while the 12Cr CNS II showed 20–300× less swelling than CNS I. Helium effects and possible contributions to swelling resistance in ferritic-martensitic steels were explored based on the results of transmission electron microscopy analysis. Radiation induced high density precipitates (Fe, Cr)2 C were found to account for the superior swelling resistance of CNS II.