微量のＳｎを含むＡｌ‐Ｃｕ合金におけるＳｎリッチ析出相のＥＤＳ分析

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  • Energy dispersive X-ray spectroscopy on so-called Sn-rich precipitates in Al-Cu alloy containing a small amount of Sn
  • ビリョウ ノ Sn オ フクム Al Cu ゴウキン ニ オケル イワユル S

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The authors reported that θ' phases heterogeneously precipitate on small black spots formed at the just early stage of high temperature aging of a ternary Al-Cu-Sn alloy resulting in the aging acceleration. The present work was undertaken to make clear whether the black spots are really Sn-rich phases or not by means of a energy dispersive X-ray spectroscope mounted on a transmission electron microscope. The black spots are proved to consist of Sn atoms as predicted by the authors. Sn atoms are not absorbed at the interface between θ' and matrix reversely to the theory by Hardy et al. The Sn-rich phases will play an important role even in precipitation of θ" or G.P. zones.

収録刊行物

  • 軽金属

    軽金属 29 (6), 223-226, 1979

    一般社団法人 軽金属学会

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