In-situ observation of damage structure in Cu-Cr-Zr and Cu-Cr alloy during 1.25 MeV electron irradiation

M. Hatakeyama, T. Yamamoto, K. Yasuda, S. Matsumura, K. Yasunaga, K. Sato

研究成果: ジャーナルへの寄稿学術誌査読

抄録

The sink strengths of precipitate/matrix interfaces in Cu alloys, were investigated by performing in-situ observation of electron irradiation in high-voltage electron microscopy (HVEM). Fine black spot defects, which seemed to be dislocation loops were observed at irradiation temperature ranging between RT and 373 K in Cu–Cr–Zr, Cu–Cr and GlidCop Al–60 alloys with low number density. In Cu–Cr, loops formed on a part of precipitates interfaces. Hence, a part of precipitate/matrix interfaces is a sink with interstitial bias. Whereas, most of the interfaces are neutral sinks for point defects. In the case of Cu–Cr–Zr and GlidCop Al–60, black spots formed around dislocation, which were induced during two-step heat treatment. The results showed that the precipitate/matrix interface of Cr-rich precipitates in Cu alloys serve as a strong sink for point defects.

本文言語英語
論文番号101144
ジャーナルNuclear Materials and Energy
30
DOI
出版ステータス出版済み - 3月 2022

!!!All Science Journal Classification (ASJC) codes

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

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