Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys

Satoshi Hata, Kosuke Kimura, Hongye Gao, Syo Matsumura, Minoru Doi, Tomokazu Moritani, Jonathan S. Barnard, Jenna R. Tong, Jo H. Sharp, Paul A. Midgley

研究成果: ジャーナルへの寄稿学術誌査読

34 被引用数 (Scopus)

抄録

A study was conducted to perform 3D microstructural analysis based on electron tomography. The study also attempted to investigate a unique domain structure in a Ni-Al-Ti alloy. A two-phase microstructure,composed of L1 2-ordered γ domains with cuboidal shape and an A1-disordered γ matrix exhibited secondary phase separation during aging precipitation of fine γ in each domain. A variety of precipitation behaviors and microstructural evolutions were observed in the second stage of phase separation, depending on on the alloy composition. The study also demonstrated tomographic DFTEM and EFTEM observations, to clarify the 3D morphology of the γ precipitates and compositional distribution in the phase-separated microstructure.

本文言語英語
ページ(範囲)1905-1909
ページ数5
ジャーナルAdvanced Materials
20
10
DOI
出版ステータス出版済み - 5月 19 2008

!!!All Science Journal Classification (ASJC) codes

  • 材料科学一般
  • 材料力学
  • 機械工学

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