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Irradiation-induced creep in graphite: a review

Technical Report ·
DOI:https://doi.org/10.2172/6069092· OSTI ID:6069092
Data on irradiation-induced creep in graphite published since 1972 are reviewed. Sources include restrained shrinkage tests conducted at Petten, the Netherlands, tensile creep experiments with continuous strain registration at Petten and Grenoble, France, and controlled load tests with out-of-reactor strain measurement performed at Oak Ridge National Laboratory, Petten, and in the United Kingdom. The data provide reasonable confirmation of the linear viscoelastic creep model with a recoverable transient strain component followed by a steady-state strain component, except that the steady-state creep coefficient must be treated as a function of neutron fluence and is higher for tensile loading than for compressive loading. The total transient creep strain is approximately equal to the preceding elastic strain. No temperature dependence of the transient creep parameters has been demonstrated.
Research Organization:
General Atomic Co., San Diego, CA (USA)
DOE Contract Number:
AT03-76ET35301
OSTI ID:
6069092
Report Number(s):
GA-A-16402; ON: DE82001141
Country of Publication:
United States
Language:
English