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Title: Monte Carlo modeling of recrystallization processes in α-uranium

Journal Article · · Journal of Nuclear Materials

Starting with electron backscattered diffraction (EBSD) data obtained from a warm clock-rolled α-uranium deformation microstructure, a Potts Monte Carlo model was used to simulate static site-saturated recrystallization and test which recrystallization nucleation conditions within the microstructure are best validated by experimental observations. The simulations support prior observations that recrystallized nuclei within α-uranium form preferentially on non-twin high-angle grain boundary sites at 450°C. They also demonstrate, in a new finding, that nucleation along these boundaries occurs only at a highly constrained subset of sites possessing the largest degrees of local deformation. Deformation in the EBSD data can be identified by the Kernel Average Misorientation (KAM), which may be considered as a proxy for the local geometrically necessary dislocation (GND) density.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-06NA25396; NA0001942; DE NA 0001942; 20140630 ER
OSTI ID:
1356133
Alternate ID(s):
OSTI ID: 1357186; OSTI ID: 1416830
Report Number(s):
LA-UR-16-25109; MS/GAR-170323-2
Journal Information:
Journal of Nuclear Materials, Vol. 492, Issue C; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Cited By (1)

Study on texture and dynamic recrystallization behavior of high purity copper during reverse extrusion journal December 2019