PRECIPITATION IN ZR-2.5NB ENHANCED BY PROTON IRRADIATION

Authors
CANN CD SO CB STYLES RC COLEMAN CE
Citation
Cd. Cann et al., PRECIPITATION IN ZR-2.5NB ENHANCED BY PROTON IRRADIATION, Journal of nuclear materials, 205, 1993, pp. 267-272
Citations number
8
Categorie Soggetti
Nuclear Sciences & Tecnology","Metallurgy & Mining","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
205
Year of publication
1993
Pages
267 - 272
Database
ISI
SICI code
0022-3115(1993)205:<267:PIZEBP>2.0.ZU;2-Y
Abstract
A 3.6 MeV proton irradiation of annealed Zr-2.5Nb has been performed t o determine whether proton irradiation will enhance the precipitation of Nb-rich beta-phase precipitates within the alpha-grains. A transmis sion electron microscope examination of a foil after irradiation at 77 0 K for 18 h and at 720 K for 264.5 h to a total damage of 0.94 dpa re vealed a fine dispersion of precipitates within the alpha-grains. Elec tron diffraction analysis of the precipitates found they have lattice plane spacings consistent with the Nb-rich beta-phase. This result is in agreement with the beta-phase precipitation observed following neut ron irradiation, and thus it supports the use of proton irradiation to simulate neutron-irradiation effects in Zr-2.5Nb.