SMALL-ANGLE NEUTRON-SCATTERING INVESTIGATIONS OF THE MICROSTRUCTURE OF VVER-440-TYPE REACTOR PRESSURE-VESSEL STEEL AFTER IRRADIATION AT 60-DEGREES-C

Authors
GROSSE M BOEHMERT J GILLES R
Citation
M. Grosse et al., SMALL-ANGLE NEUTRON-SCATTERING INVESTIGATIONS OF THE MICROSTRUCTURE OF VVER-440-TYPE REACTOR PRESSURE-VESSEL STEEL AFTER IRRADIATION AT 60-DEGREES-C, Journal of nuclear materials, 254(2-3), 1998, pp. 143-150
Citations number
8
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
254
Issue
2-3
Year of publication
1998
Pages
143 - 150
Database
ISI
SICI code
0022-3115(1998)254:2-3<143:SNIOTM>2.0.ZU;2-2
Abstract
The formation of point defects and precipitates after neutron irradiat ion of VVER-440-type reactor pressure vessel steel was investigated by small angle neutron scattering experiments. Irradiation at 60 degrees C increased the number of point defects, decreased the precipitates, which already exist in the unirradiated state, and formed a new type o f fine-scaled precipitates. Post-irradiation annealing near the operat ional temperature of the nuclear power plants (270 degrees C) provoked a slight decrease of the content of point defects and of the irradiat ion-induced precipitates. The content of these precipitates which are also present in the unirradiated state did not change by annealing. (C ) 1998 Elsevier Science B.V.