HAADF-STEM study on the early stage of precipitation in aged Al-Ag alloys

Toyohiko J. Konno, Eiji Okunishi, Tetsu Ohsuna, Kenji Hiraga

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We report on the structure of Ag precipitates in aged Al-Ag alloys using transmission electron microscopy and high-angle annular detector dark-field scanning transmission electron microscopy (HAADF-STEM). Irregularly shaped small Ag particles of 1-2 nm dominate the alloy annealed at 140°C for 10 h. These particles are present also within large precipitates (10-50 nm), which are often characterized by their {100} and {110} facets. In addition, atomic-resolution HAADF-STEM images revealed that Ag atoms tend to form {111} planar clusters, which criss-cross a colony of the irregularly shaped small Ag precipitates.

本文言語English
ページ(範囲)611-616
ページ数6
ジャーナルJournal of Electron Microscopy
53
6
DOI
出版ステータスPublished - 2004

ASJC Scopus subject areas

  • 器械工学

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