TY - GEN
T1 - Effects of High-Temperature Irradiation on the Microstructure of Nuclear Graphite
AU - Campbell, Anne A.
AU - Contescu, Cristian I.
AU - Cakmak, Ercan
AU - Gallego, Nidia C.
AU - Burchell, Timothy D.
PY - 2019
Y1 - 2019
N2 - This report summarizes the nondestructive microstructure characterization undertaken at Oak Ridge National Laboratory (ORNL) to understand the effects of high-temperature neutron irradiation on the structure of nuclear graphite. Nuclear graphite specimens were irradiated in the ORNL High Flux Isotope Reactor (HFIR) in the High Temperature Vehicle (HTV) with target irradiation temperatures of 900ºC, 1200ºC, and 1500ºC [1, 2]. The experiment was irradiated in the HFIR flux trap for two irradiation cycles, providing the specimens in the highest-fluence positions a total exposure of 4.5×1021 n/cm2 [E>0.1 MeV], equivalent to radiation damage of ~3.3 dpa (displacements per atom) according to the conversion factor in Burchell [3].
AB - This report summarizes the nondestructive microstructure characterization undertaken at Oak Ridge National Laboratory (ORNL) to understand the effects of high-temperature neutron irradiation on the structure of nuclear graphite. Nuclear graphite specimens were irradiated in the ORNL High Flux Isotope Reactor (HFIR) in the High Temperature Vehicle (HTV) with target irradiation temperatures of 900ºC, 1200ºC, and 1500ºC [1, 2]. The experiment was irradiated in the HFIR flux trap for two irradiation cycles, providing the specimens in the highest-fluence positions a total exposure of 4.5×1021 n/cm2 [E>0.1 MeV], equivalent to radiation damage of ~3.3 dpa (displacements per atom) according to the conversion factor in Burchell [3].
KW - 36 MATERIALS SCIENCE
U2 - 10.2172/1615810
DO - 10.2172/1615810
M3 - Technical Report
CY - United States
ER -