Effect of FFTF irradiation on tensile properties of P- and Ti-modified model austenitic alloys with small amounts of boron

H. Kurishita, T. Muroga, H. Watanabe, N. Yoshida, H. Kayano, M. L. Hamilton

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10 Citations (Scopus)

Abstract

The interactive effects of P and Ti additions, helium dpa ratio, irradiation and test temperature on postirradiation tensile properties of a model Fe-16Cr-17Ni alloy were investigated. Miniature tensile specimens containing 64 and 522 appm 10B (0.75 and 3.8 He dpa ratio), with and without 0.1 wt% P and 0.25 wt% Ti additions, were irradiated to 33 dpa at 703, 793 and 874 K in the Fast Flux Test Facility (FFTF). They were deformed at 300, 473 and 673 K. For all the alloy conditions the irradiation at 703 K increases the yield stress and decreases the uniform elongation significantly. An effect of 10B addition occurs, which is not related to helium generation, but it is small compared to the effects of P and Ti additions. Additions of P and Ti, especially their simultaneous addition, cause a significant strengthening but no appreciable change in uniform elongation. The cause of the strengthening and the observed changes in uniform elongation are discussed.

Original languageEnglish
Pages (from-to)519-524
Number of pages6
JournalJournal of Nuclear Materials
Volume212-215
Issue numberPART 1
DOIs
Publication statusPublished - Sep 1994

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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