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

doi:10.1016/j.intermet.2020.106887

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

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.

Original language	English
Article number	106887
Journal	Intermetallics
Volume	125
DOIs	https://doi.org/10.1016/j.intermet.2020.106887
Publication status	Published - 2020 Oct
Externally published	Yes

Keywords

Electron microscopy
Interface structure
Orientation relationships
P phase
Superalloy

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.intermet.2020.106887

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

abstract = "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{\textquoteright} 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.",

keywords = "Electron microscopy, Interface structure, Orientation relationships, P phase, Superalloy",

author = "Youjian Zhang and Jianxin Zhang and Pan Li and Huixin Jin and Wenyang Zhang and Zihan Wang and Shengcheng Mao",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grants No. 51971118 , 51771102 and 51471098 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = oct,

doi = "10.1016/j.intermet.2020.106887",

language = "English",

volume = "125",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Limited",

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T1 - Characterization of topologically close-packed phases and precipitation behavior of P phase in a Ni-based single crystal superalloy

AU - Zhang, Youjian

AU - Zhang, Jianxin

AU - Li, Pan

AU - Jin, Huixin

AU - Zhang, Wenyang

AU - Wang, Zihan

AU - Mao, Shengcheng

PY - 2020/10

Y1 - 2020/10

N2 - 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.

AB - 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.

KW - Electron microscopy

KW - Interface structure

KW - Orientation relationships

KW - P phase

KW - Superalloy

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DO - 10.1016/j.intermet.2020.106887

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JO - Intermetallics

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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