PERFORMANCE EVALUATION OF THE CORROSION PERFORMANCE OF SEVERAL ODS STEELS EXPOSED TO SUPERCRITICAL WATER
The 5th International Symposium on SuperCritical Water-cooled Reactors - 2011 March 13-16


Presented at:
The 5th International Symposium on SuperCritical Water-cooled Reactors
2011 March 13-16
Location:
Vancouver,Canada
Session Title:
Materials III (ODS & Microstructure Modeling)

Authors:
William Cook (University of New Brunswick)
Jamie Miles (University of New Brunswick)
Wenyue Zheng (Natural Resources Canada)
Jian Li (Natural Resources Canada)
Zhangjian Zhou (University of Science and Technology Beijing)
Changchun Ge (University of Science and Technology Beijing)
  

Abstract

Oxide-dispersion strengthened (ODS) steels are being considered as candidate alloys for use as primary fuel cladding material in the CANDU-SCWR. ODS steels show improved creep and radiation resistance, which make them promising candidates for the in-core applications in SCWRs. ODS alloys of austenitic stainless steels are also believed to have superior creep properties over their non-ODS counterpart materials. The supercritical water test loop at the University of New Brunswick has been used to test several ODS steels under supercritical water conditions (500oC, 25 MPa, deaerated). The steels that were prepared by ODS processing at the Beijing University of Science and Technology were two 14% Cr steels with different minor alloying elements, one 18% Cr steel, and one 304 commercial austenitic stainless steel. The base steels were atomized, mechanically alloyed with 0.35% Y2O3 and consolidated, to provide for oxide dispersion strengthening. The results of the loop exposure on these ODS steels are compared to those from previous experiments, where steels were of similar composition but not ODS processed. 

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