Effects of 100 keV He-ion irradiation on early stage of plastic deformation of copper polycrystals at 77 K

K. Shinohara, M. Yasuda, K. Yasuda, M. Kutsuwada

研究成果: ジャーナルへの寄稿記事

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The effects of 100 keV He-ion irradiation on the early stage of plastic deformation of copper polycrystals were studied by examining dose-dependence of the yield stress at 77 K and slip behavior at 90 K, and ultra-micro hardness measurements on thin surface damaged layers were also carried out at room temperature. The yield stress increased slightly at a dose of 2 × 1021 ions/m2, but did not increased at 2 × 1019 ions/m2. The hardness increased markedly at 2 × 1021 ions/m2 and slightly at 2 × 1019 ions/m2. The slip behavior was markedly different between unirradiated surfaces and irradiated ones at a higher dose, and slightly at a lower dose. These facts show that the very thin surface damaged layer affects the mechanical properties of fcc bulk materials. The possibility of the use of ultra-micro hardness testing in He irradiation effects is also briefly discussed.

元の言語英語
ページ(範囲)145-150
ページ数6
ジャーナルJournal of Nuclear Materials
182
発行部数C
DOI
出版物ステータス出版済み - 1 1 1991

    フィンガープリント

All Science Journal Classification (ASJC) codes

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

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