Characterization of topologically close-packed phases and precipitation behavior of P phase in a Ni-based single crystal superalloy

Youjian Zhang, Jianxin Zhang*, Pan Li, Huixin Jin, Wenyang Zhang, Zihan Wang, Shengcheng Mao

*この研究の対応する著者

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Scanning electron microscopes (SEM) and transmission electron microscopes (TEM) were employed to investigate the topologically close-packed (TCP) phases in an experimental nickel base single crystal superalloy. Orientation relationships between P phase and matrix were found as (010)P//(11‾1)γ and [201]P//[110]γ, in which atomic arrangement of P phase obtains the optimal matching with that of γ/γ’ matrix and the semi-coherent interface forms, achieving the lower interface energy. The elemental composition, atomic arrangement of low index planes and the atomic attachment of P phase with matrix were analyzed in detail to investigate the atomic scale structure of the fast-growing semi-coherent interface and its effects on precipitate growth. Finally, the nucleation of P phase was discussed.

本文言語English
論文番号106887
ジャーナルIntermetallics
125
DOI
出版ステータスPublished - 2020 10月
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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