Microstructure development in neutron irradiated tungsten alloys

Takashi Tanno, Makoto Fukuda, Shuhei Nogami, Akira Hasegawa

Research output: Contribution to journalArticlepeer-review

77 Citations (Scopus)

Abstract

The aim of this work is to investigate the influence of neutron irradiation condition, especially temperature, on irradiation hardening and microstructure development in irradiated tungsten-rhenium (W-Re) alloys. Neutron irradiations were carried out in JOYO at the range of 400 to 750°C, up to 1.54 dpa. Micro Vickers hardness tests and micro structural observations using a TEM were performed. Irradiation hardening of W-Re alloys irradiated at 538°C were clearly larger than those irradiated at other temperatures. Fine voids and fine needle-or plate-like precipitates were observed in pure W and W-Re alloys irradiated at 538°C, respectively, with high number density. The fine complex microstructure seems to be the cause of the characteristic irradiation hardening.

Original languageEnglish
Pages (from-to)1447-1451
Number of pages5
JournalMaterials Transactions
Volume52
Issue number7
DOIs
Publication statusPublished - 2011 Jul

Keywords

  • Irradiation hardening
  • Irradiation induced precipitation
  • Irradiation temperature
  • Microstructure development
  • Neutron irradiation
  • Tungsten

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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