Localized deformation in neutron-irradiated zirconium and ZIRCALOY-4

N. Hashimoto, T. S. Byun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

The effects of neutron-irradiation near 80°C on the deformation behavior of hexagonal close packed (hep) materials, zirconium and zircalloy-4, were investigated by transmission electron microscopy (TEM). Particular emphasis is placed on the deformation microstructure responsible for the changes in mechanical behavior. Neutron irradiation at low temperature up to 1 dpa induced a high number density of defect clusters, which resulted in irradiation-induced hardening. Dislocation channel deformation is observed for doses greater than 0.1 dpa, and is coincident with prompt plastic instability at yield. TEM analysis suggests that the loss of work hardening capacity in irradiated zirconium and zircaloy-4 at higher doses is mainly due to dislocation channels that are formed under a high local resolved shear stress, leading to the observed localized deformation.

Original languageEnglish
Title of host publicationSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PublisherTrans Tech Publications Ltd
Pages1769-1772
Number of pages4
EditionPART 3
ISBN (Print)0878494626, 9780878494620
DOIs
StatePublished - 2007
Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
Duration: Nov 5 2007Nov 9 2007

Publication series

NameMaterials Science Forum
NumberPART 3
Volume561-565
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Country/TerritoryKorea, Republic of
CityJeju
Period11/5/0711/9/07

Keywords

  • Deformation
  • Electron microscopy
  • Neutron irradiation
  • Radiation effects

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