TY - JOUR
T1 - A new interpretation of the mechanisms in Newtonian creep of uranium dioxides
AU - Wang, J. N.
AU - Nieh, T. G.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 1996/2
Y1 - 1996/2
N2 - Newtonian creep data on both stoichiometric and hyperstoichiometric urania materials are analyzed. It is shown that there may be two distinct regimes: one is grain size sensitive, and the other grain size insensitive. Both qualitative and quantitative evaluations of these two regimes suggest that deformation in the grain size sensitive regime may be controlled by lattice diffusion-accommodated grain boundary sliding whereas that in the grain size insensitive regime by a dislocation process operating in Harper-Dorn creep.
AB - Newtonian creep data on both stoichiometric and hyperstoichiometric urania materials are analyzed. It is shown that there may be two distinct regimes: one is grain size sensitive, and the other grain size insensitive. Both qualitative and quantitative evaluations of these two regimes suggest that deformation in the grain size sensitive regime may be controlled by lattice diffusion-accommodated grain boundary sliding whereas that in the grain size insensitive regime by a dislocation process operating in Harper-Dorn creep.
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U2 - 10.1016/0022-3115(95)00200-6
DO - 10.1016/0022-3115(95)00200-6
M3 - RGC 21 - Publication in refereed journal
SN - 0022-3115
VL - 228
SP - 141
EP - 147
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -