Linking Lattice Strain and Fractal Dimensions to Non‐monotonic Volume Changes in Irradiated Nuclear Graphite
Name
Interdisciplinary Materials - 2025 - Sprouster - Linking Lattice Strain and Fractal Dimensions to Non‐monotonic Volume.pdf
Description
Published version
Size
1.06 MB
Format
Adobe PDF
Checksum (MD5)
6096afdc4e5c35cab06262bb33e9db1e
Author(s)
Sprouster, David J
Fayfar, Sean
Rai, Durgesh K
Campbell, Anne
Ilavsky, Jan
Snead, Lance L
Khaykovich, Boris
Date Issued
August 12, 2025
Journal
Interdisciplinary Materials
Publisher
Wiley
Citation
Sprouster, D.J., Fayfar, S., Rai, D.K., Campbell, A., Ilavsky, J., Snead, L.L. and Khaykovich, B. (2025), Linking Lattice Strain and Fractal Dimensions to Non-monotonic Volume Changes in Irradiated Nuclear Graphite. Interdisciplinary Materials, 4: 714-718.
Version
Final published version
Abstract
Graphite's resilience to high temperatures and neutron damage makes it vital for nuclear reactors, yet irradiation alters its microstructure, degrading key properties. We used small- and wide-angle X-ray scattering to study neutron-irradiated fine-grain nuclear graphite (Grade G347A) across varied temperatures and fluences. Results show significant shifts in internal strain and porosity, correlating with radiation-induced volume changes. Notably, porosity volume distribution (fractal dimensions) follows non-monotonic volume changes, suggesting a link to the Weibull distribution of fracture stress.
MIT Department
MIT Nuclear Reactor Laboratory
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1002/idm2.70008
