Revealing hidden defects through stored energy measurements of radiation damage
Name
sciadv.abn2733.pdf
Description
Published version
Size
1.31 MB
Format
Adobe PDF
Checksum (MD5)
05016feac024151fd929c3b2fc65e49b
Author(s)
Hirst, Charles A
Granberg, Fredric
Kombaiah, Boopathy
Cao, Penghui
Middlemas, Scott
Kemp, R Scott
Li, Ju
Nordlund, Kai
Short, Michael P
Date Issued
2022
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Hirst, Charles A, Granberg, Fredric, Kombaiah, Boopathy, Cao, Penghui, Middlemas, Scott et al. 2022. "Revealing hidden defects through stored energy measurements of radiation damage." Science Advances, 8 (31).
Version
Final published version
Abstract
With full knowledge of a material’s atomistic structure, it is possible to predict any macroscopic property of interest. In practice, this is hindered by limitations of the chosen characterization techniques. For example, electron microscopy is unable to detect the smallest and most numerous defects in irradiated materials. Instead of spatial characterization, we propose to detect and quantify defects through their excess energy. Differential scanning calorimetry of irradiated Ti measures defect densities five times greater than those determined using transmission electron microscopy. Our experiments also reveal two energetically distinct processes where the established annealing model predicts one. Molecular dynamics simulations discover the defects responsible and inform a new mechanism for the recovery of irradiation-induced defects. The combination of annealing experiments and simulations can reveal defects hidden to other characterization techniques and has the potential to uncover new mechanisms behind the evolution of defects in materials.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/SCIADV.ABN2733
