Swelling and Microstructural Evolution in 316 Stainless Steel Hexagonal Ducts Following Long-Term Irradiation in EBR-II

James I. Cole, Todd R. Allen, Hanchung Tsai, Shigeharu Ukai, Shunji Mizuta, Naoaki Akasaka, Takako Donomae, Tsunemitsu Yoshitake

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

3 Scopus citations

Abstract

Swelling behavior and microstructural evolution of 12% cold-worked 316 SS hexagonal ducts following irradiation in the outer rows of EBR-II is described. Immersion density measurements and transmission electron microscopy (TEM) examination were performed on a total of seven irradiation conditions. The samples were irradiated to temperatures between 375 and 430°C to doses between 23 and 51 dpa and at dose-rates ranging from 1.3 x 10"7 to 5.8 x 10"7 dpa/s. Dose-rates and temperatures approach conditions experienced by a variety of components in pressurized water reactors (PWR's) and those which may be present in future advanced reactors designs. TEM analysis was employed to elucidate the effect of radiation on the dislocation, void and precipitate structures as a function of irradiation conditions. A moderate dose-rate effect was observed for samples which were irradiated at dose-rates differing by a factor of two. Lower dose-rate samples contained voids of larger diameter and typically swelled more in the bulk. The dislocation and precipitate structure was not visibly influenced by a dose-rate decrease.

Original languageEnglish
Title of host publicationEffects of Radiation on Materials
Subtitle of host publication20th International Symposium
EditorsStan T. Rosinski, Martin L. Grossbeck, Todd R. Allen, Arvind S. Kumar
PublisherASTM International
Pages413-426
Number of pages14
ISBN (Electronic)9780803128781
DOIs
StatePublished - 2001
Externally publishedYes
Event20th International Symposium on Effects of Radiation on Materials 2000 - Williamsburg, United States
Duration: Jun 6 2000Jun 8 2000

Publication series

NameASTM Special Technical Publication
VolumeSTP 1405
ISSN (Print)0066-0558

Conference

Conference20th International Symposium on Effects of Radiation on Materials 2000
Country/TerritoryUnited States
CityWilliamsburg
Period06/6/0006/8/00

Keywords

  • austenitic stainless steels
  • radiation effects
  • swelling
  • transmission electron microscopy
  • voids

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