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Development of oxide-dispersion-strengthened ferritic steel for long-life FBR core materials

Conference · · Transactions of the American Nuclear Society; (United States)
OSTI ID:6683683
; ; ; ;  [1]; ;  [2];
  1. Power Reactor and Nuclear Fuels Development Corp., Ibaraki-ken (Japan)
  2. Kobe Steel, Ltd. (Japan)

An economical fuel cycle cost for fast breeder reactors (FBRs) can be effectively attained by the extension of the fuel burnup. In the class of austenitic steels such as PNC316 and PNC1520, microstructural instabilities leading to the void swelling become a limiting factor for extremely high burnup extension. The ferritic/martensitic steel, PNC-FMS, has excellent resistance to void swelling far beyond 150 dpa, but it is substantially limited to its inferior creep rupture strength. For prospective cladding materials used in long-life FBR cores, work has been directed toward oxide-dispersion-strengthened (ODS) ferritic steel to improve the high-temperature strength.

OSTI ID:
6683683
Report Number(s):
CONF-921102--
Journal Information:
Transactions of the American Nuclear Society; (United States), Journal Name: Transactions of the American Nuclear Society; (United States) Vol. 66; ISSN 0003-018X; ISSN TANSAO
Country of Publication:
United States
Language:
English