Effect of self-ion irradiation on hardening and microstructure of tungsten

T. Hwang, Makoto Fukuda, S. Nogami, Akira Hasegawa, H. Usami, Kiyohiro Yabuuchi, K. Ozawa, H. Tanigawa

研究成果: Article査読

36 被引用数 (Scopus)


The irradiation hardening and microstructures of pure W and W – 3%Re for up to 5.0 dpa by self-ion irradiation were investigated in this work. The ion irradiation was conducted using 18 MeV W6+ at 500 and 800 °C. A focused ion beam followed by electro-polishing was used to make thin foil specimens for transmission electron microscope observations. Dislocation loops were observed in all the irradiated samples. Voids were observed in all of the specimens except the W–3%Re irradiated to 0.2 dpa. The hardness was measured by using nanoindentation. The irradiation hardening was saturated at 1.0 dpa for pure W. In the case of W – 3%Re, the irradiation hardening showed a peak at 1.0 dpa. The correlation between the microstructure and hardening was investigated.

ジャーナルNuclear Materials and Energy
出版ステータスPublished - 2016 12月 1

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 材料科学(その他)
  • 原子力エネルギーおよび原子力工学


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