Neutron irradiation effects on the mechanical properties of powder metallurgical processed tungsten alloys

Takeshi Miyazawa, Lauren M. Garrison, Josina W. Geringer, Makoto Fukuda, Yutai Katoh, Tatsuya Hinoki, Akira Hasegawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Neutron irradiation effects on the tensile properties of Pure W, K-doped W, W–3%Re, and K-doped W–3%Re were examined under the US-Japan collaboration project PHENIX. The fission neutron irradiation experiments were carried out up to 0.74 dpa at 600 °C and 800 °C. Pure W (SR) showed irradiation hardening and loss of ductility after irradiation at 600 °C and 800 °C. K-doped W–3%Re (SR) also exhibited irradiation hardening but was ductile after irradiation. Characteristic points of the K-doped W–3%Re (SR) are small grain size and layered structure. The stress-relief treatment and the layered structure may improve the ductility of powder-metallurgy W alloys after neutron irradiation, so a combination of K-doping and Re addition would be beneficial to improve irradiation resistance.

Original languageEnglish
Article number151910
JournalJournal of Nuclear Materials
DOIs
Publication statusAccepted/In press - 2019

Keywords

  • Neutron irradiation
  • Polycrystalline
  • Tensile properties
  • Thermal neutron shield
  • Tungsten

ASJC Scopus subject areas

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

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