Isotopic tailoring with 59Ni to study helium generation rates and their effect on tensile properties of neutron-irradiated Fe-Cr-Ni alloys

Frank A. Garner, Margaret L. Hamilton, Larry R. Greenwood, James F Stubbins, Brain M. Oliver

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tensile testing on three model Fe-Cr-Ni alloys removed from four discharges of the 59Ni isotopic doping experiment in FFTF-MOTA indicates that helium/dpa ratios typical of fusion reactors do not produce changes in the yield strength or elongation that are significantly different from those at much lower helium generation rates. It also appears that tensile properties approach a saturation level that is dependent only on the final irradiation temperature, but not prior temperature history or thermomechanical starting condition. The saturation in mechanical properties reflects a similar saturation in microstructure that is independent of starting condition. The successful conduct of an isotopic doping experiment was found to require post-irradiation measurement of the helium levels in order to compensate for uncertainties in the cross sections for burn-out and burn-in of 59Ni and for uncertainties in neutron flux and spectra in the vicinity of the edge of the core.

Original languageEnglish (US)
Title of host publicationASTM Special Technical Publication
EditorsArvind S. Kumar, David S. Gelles, Randy K. Nanstad, Edward A. Little
PublisherPubl by ASTM
Pages921-939
Number of pages19
Edition1175
ISBN (Print)0803114885
StatePublished - 1994
Externally publishedYes
EventProceedings of the 16th International Symposium on Effects of Radiation on Materials - Aurora, CO, USA
Duration: Jun 23 1992Jun 25 1992

Other

OtherProceedings of the 16th International Symposium on Effects of Radiation on Materials
CityAurora, CO, USA
Period6/23/926/25/92

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Garner, F. A., Hamilton, M. L., Greenwood, L. R., Stubbins, J. F., & Oliver, B. M. (1994). Isotopic tailoring with 59Ni to study helium generation rates and their effect on tensile properties of neutron-irradiated Fe-Cr-Ni alloys. In A. S. Kumar, D. S. Gelles, R. K. Nanstad, & E. A. Little (Eds.), ASTM Special Technical Publication (1175 ed., pp. 921-939). Publ by ASTM.