Effect of chemical composition on particle morphology of topologically close-packed precipitates in a Ni-based single crystal superalloy

Haibo Long; Yinong Liu; Shengcheng Mao; Hua Wei; Jianxin Zhang; Shiyu Ma; Qingsong Deng; Yanhui Chen; Ze Zhang; Xiaodong Han

doi:10.1016/j.scriptamat.2018.07.041

Effect of chemical composition on particle morphology of topologically close-packed precipitates in a Ni-based single crystal superalloy

Haibo Long, Yinong Liu, Shengcheng Mao, Hua Wei, Jianxin Zhang, Shiyu Ma, Qingsong Deng, Yanhui Chen, Ze Zhang, Xiaodong Han

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

Topologically close-packed (TCP) phases in Ni-based single crystal superalloys are known to exhibit different morphologies and orientation relationships within the matrix. This study investigated the influence of chemical composition on lattice parameters, which in turn determine the interface lattice misfit between TCP phase and matrix and thus shape and orientation of the TCP phase. In this study, TCP phase particles of different morphologies were formed by ageing at different temperatures. The level of TCP-phase element enrichment was found to increase with increasing growth time and ageing temperature, and thus leads to a same evolution behavior of the atomic volume.

Original language	English
Pages (from-to)	100-105
Number of pages	6
Journal	Scripta Materialia
Volume	157
DOIs	https://doi.org/10.1016/j.scriptamat.2018.07.041
Publication status	Published - 1 Dec 2018

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title = "Effect of chemical composition on particle morphology of topologically close-packed precipitates in a Ni-based single crystal superalloy",

abstract = "Topologically close-packed (TCP) phases in Ni-based single crystal superalloys are known to exhibit different morphologies and orientation relationships within the matrix. This study investigated the influence of chemical composition on lattice parameters, which in turn determine the interface lattice misfit between TCP phase and matrix and thus shape and orientation of the TCP phase. In this study, TCP phase particles of different morphologies were formed by ageing at different temperatures. The level of TCP-phase element enrichment was found to increase with increasing growth time and ageing temperature, and thus leads to a same evolution behavior of the atomic volume.",

keywords = "Nickel, Precipitation, Superalloy, TCP phase, Transmission electron microscopy",

author = "Haibo Long and Yinong Liu and Shengcheng Mao and Hua Wei and Jianxin Zhang and Shiyu Ma and Qingsong Deng and Yanhui Chen and Ze Zhang and Xiaodong Han",

year = "2018",

month = dec,

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doi = "10.1016/j.scriptamat.2018.07.041",

language = "English",

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journal = "Scipta Materialia",

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Effect of chemical composition on particle morphology of topologically close-packed precipitates in a Ni-based single crystal superalloy. / Long, Haibo; Liu, Yinong; Mao, Shengcheng; Wei, Hua; Zhang, Jianxin; Ma, Shiyu; Deng, Qingsong; Chen, Yanhui; Zhang, Ze; Han, Xiaodong.

In: Scripta Materialia, Vol. 157, 01.12.2018, p. 100-105.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Effect of chemical composition on particle morphology of topologically close-packed precipitates in a Ni-based single crystal superalloy

AU - Long, Haibo

AU - Liu, Yinong

AU - Mao, Shengcheng

AU - Wei, Hua

AU - Zhang, Jianxin

AU - Ma, Shiyu

AU - Deng, Qingsong

AU - Chen, Yanhui

AU - Zhang, Ze

AU - Han, Xiaodong

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Topologically close-packed (TCP) phases in Ni-based single crystal superalloys are known to exhibit different morphologies and orientation relationships within the matrix. This study investigated the influence of chemical composition on lattice parameters, which in turn determine the interface lattice misfit between TCP phase and matrix and thus shape and orientation of the TCP phase. In this study, TCP phase particles of different morphologies were formed by ageing at different temperatures. The level of TCP-phase element enrichment was found to increase with increasing growth time and ageing temperature, and thus leads to a same evolution behavior of the atomic volume.

AB - Topologically close-packed (TCP) phases in Ni-based single crystal superalloys are known to exhibit different morphologies and orientation relationships within the matrix. This study investigated the influence of chemical composition on lattice parameters, which in turn determine the interface lattice misfit between TCP phase and matrix and thus shape and orientation of the TCP phase. In this study, TCP phase particles of different morphologies were formed by ageing at different temperatures. The level of TCP-phase element enrichment was found to increase with increasing growth time and ageing temperature, and thus leads to a same evolution behavior of the atomic volume.

KW - Nickel

KW - Precipitation

KW - Superalloy

KW - TCP phase

KW - Transmission electron microscopy

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DO - 10.1016/j.scriptamat.2018.07.041

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VL - 157

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EP - 105

JO - Scipta Materialia

JF - Scipta Materialia

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