Super ODS steels R&D for cladding of highly efficient nuclear plants

Akihiko Kimura, Hangsik Cho, Naoki Toda, Ryuta Kasada, Hirotatsu Kishimoto, Noriyuki Iwata, Shigeharu Ukai, Satoshi Ohtsuka, Masayuki Fujiwara

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

1 Citation (Scopus)

Abstract

Cladding materials development is essential to realize highly efficient and high-burnup operation over 100GWd/t of so called Generation IV nuclear energy system. Oxide dispersion strengthening (ODS) ferritic/ martensitic steels, which contain 9-12%Cr, show rather high resistance to neutron irradiation embrittlement and high strength at elevated temperatures. However, their corrosion resistance is not good enough in supercritical pressurized water and in lead at high temperatures. In order to improve corrosion resistance of the ODS steels in such environment, high-Cr ODS steels have been developed at Kyoto University. An increase in Cr content resulted in a drastic improvement of corrosion resistance in SCW and in lead, while it was expected to cause an enhancement of aging embrittlement as well as Irradiation embrittlement. Anisotropy in tensile properties is another issue. In order to overwhelm these issues, surveillance tests of the material performance have been performed for high Cr-ODS steels produced by new processing technologies. It is demonstrated that high-Cr ODS steels have a high potential as fuel cladding materials for SCWR and LFR with high efficiency and high burnup.

Original languageEnglish
Title of host publicationSociete Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work"
Pages2148-2154
Number of pages7
Publication statusPublished - 2008
EventSociete Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work" - Nice, France
Duration: 2007 May 132007 May 18

Publication series

NameSociete Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work"
Volume4

Conference

ConferenceSociete Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work"
Country/TerritoryFrance
CityNice
Period07/5/1307/5/18

Keywords

  • F0200
  • F0800
  • M0500
  • O0200
  • P0200
  • S1000

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