J. Phys. Colloques
Volume 49, Numéro C6, Novembre 198835th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
|Page(s)||C6-283 - C6-288|
J. Phys. Colloques 49 (1988) C6-283-C6-288
SOLUTE CLUSTERING AND PRECIPITATION IN PRESSURE VESSEL STEELS UNDER LOW FLUENCE IRRADIATION CONDITIONSM.G. BURKE1 et M.K. MILLER2
1 Westinghouse R and D Center, Pittsburgh, PA 15235, U.S.A.
2 Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
The microstructural features present in reactor pressure vessel steels after low fluence neutron irradiation have been characterized by atom probe field-ion microscopy. Unlike the clusters and precipitates which have been reported in pressure vessel steels irradiated to intermediate and higher fluences, very diffuse solute-enriched atmospheres have been observed. Although copper is associated with a high proportion of these atmospheres, phosphorus appears to play a more dominant role in the formation of these features.