Study of ultrafine Cu precipitates in neutron-irradiated Fe utilizing positron quantum-dot-like states

Y. Nagai, M. Hasegawa, Z. Tang, T. Kanai, M. Saneyasu

研究成果: Conference article査読

5 被引用数 (Scopus)

抄録

Ultrafine Cu precipitates in neutron-irradiated Fe-0.3wt%Cu model alloys are studied by positron lifetime and coincidence Doppler broadening of positron annihilation radiation. We found that irradiation-induced vacancies bound with Cu solute atoms make aggregations to form vacancy clusters (microvoids) and the inner surfaces of the microvoids are mostly coated with Cu atoms. The microvoids recover by post-irradiation annealing up to 400°C. However, the Cu aggregations survive up to higher temperatures as defect-free ultrafine Cu precipitates.

本文言語English
ページ(範囲)91-93
ページ数3
ジャーナルMaterials Science Forum
363-365
DOI
出版ステータスPublished - 2001
イベント12th International Conference on Positron Annihilation - Munchen, Germany
継続期間: 2000 8 62000 8 12

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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