Neutron irradiation embrittlement of molybdenum rhenium alloys and their improvement by heat treatment

Akira Hasegawa, Kazukiyo Ueda, Manabu Satou, Katsunori Abe

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Irradiation-induced embrittlement is one of the major problems with molybdenum alloys, which have been considered as one of the candidates for divertor structural materials. The effects of rhenium content, heat-treatment and irradiation condition on mechanical properties and microstructural development of molybdenum rhenium alloys were studied after neutron exposure by FFTF/MOTA up to high fluence (∼1 × 1027 n/m2, En>0.1 MeV). Appreciable plastic deformation was observed in a bending test on stress-relieved Mo-5 wt% Re irradiated at high temperatures. Fine, dense precipitates were observed in Mo 41 wt% Re, resulting in large hardening and embrittlement.

Original languageEnglish
Pages (from-to)902-906
Number of pages5
JournalJournal of Nuclear Materials
Volume258-263
Issue numberPART 1 A
DOIs
Publication statusPublished - 1998 Oct

ASJC Scopus subject areas

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

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