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学術誌査読

10 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)145-150
ページ数6
ジャーナルJournal of Nuclear Materials
182
C
DOI
出版ステータス出版済み - 1月 1 1991

!!!All Science Journal Classification (ASJC) codes

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

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