Abstract
Irradiation using Fe ion at 300 °C up to 100 dpa was carried out on three variants of Grade 91 (G91) steel samples with different grain size ranges: fine-grained (FG, with blocky grains of a few micrometers long and a few hundred nanometers wide), ultrafine-grained (UFG, grain size of ~ 400 nm) and nanocrystalline (NC, lath grains of ~ 200 nm long and ~ 80 nm wide). Electron microscopy investigations indicate that NC G91 exhibit higher resistance to irradiation-induced defect formation than FG and UFG G91. In addition, nano-indentation studies reveal that irradiation-induced hardening is significantly lower in NC G91 than that in FG and UFG G91. Effective mitigation of irradiation damage was achieved in NC G91 steel in the current irradiation condition. Graphical abstract: [Figure not available: see full text.]
Recommended Citation
J. Duan et al., "Effect of Grain Size on the Irradiation Response of Grade 91 Steel Subjected to Fe Ion Irradiation at 300 °C," Journal of Materials Science, vol. 57, no. 28, pp. 13767 - 13778, Springer, Jul 2022.
The definitive version is available at https://doi.org/10.1007/s10853-022-07480-6
Department(s)
Materials Science and Engineering
International Standard Serial Number (ISSN)
1573-4803; 0022-2461
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 Springer, All rights reserved.
Publication Date
01 Jul 2022
Comments
U.S. Department of Energy, Grant DE-NE0008524