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The effect of rhenium on the radiation damage resistivity of Mo–Re alloys

Journal of Nuclear Materials, ISSN: 0022-3115, Vol: 252, Issue: 3, Page: 216-227
1998
  • 32
    Citations
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  • 28
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Metrics Details

  • Citations
    32
    • Citation Indexes
      32
  • Captures
    28

Article Description

The results of investigations of alloys in the Mo–Re system are presented with Re varying from 0.5 to 47%. Samples were irradiated in the SM-2 reactor up to doses of 1–5.5×10 25 n/m 2 ( E >0.1 MeV) at 100°C, 210°C, 260°C and 330°C and in the BOR-60 reactor to doses of 0.8–2.0×10 26 n/m 2 ( E >0.1 MeV) at 480°C, 550°C, 760°C and 800°C. Irradiation to high doses in the SM-2 and BOR-60 reactors results in pronounced embrittlement of Mo–Re alloys in the testing temperature range of 300–600°C. The study of the electrical conductivity of the alloys has shown that irradiation in SM-2 results in a linear increase of the electrical resistivity with increasing Re concentration. Based on the analysis of available data the tentative conclusion has been made, that during irradiation in a mixed-spectrum reactor the resonance reaction proceeds on Re giving rise to the accumulation of transmutants (Os) reducing the electrical conductivity of the alloys.

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