Multi-scale characterization of stray grain in the platform of nickel-base single crystal turbine blade

Yafeng Li; Lin Liu; Taiwen Huang; Haifeng Wang; Jun Zhang; Hengzhi Fu

doi:10.1016/j.vacuum.2016.06.016

Multi-scale characterization of stray grain in the platform of nickel-base single crystal turbine blade

Yafeng Li
, Lin Liu
, Taiwen Huang
, Haifeng Wang
, Jun Zhang
, Hengzhi Fu

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

30 引用（Scopus）

摘要

Through comparatively characterizing the platforms with and without stray grain in multi-scale levels, it is determined that stray grain (SG) originates from heterogeneous nucleation with randomly distributed orientations with respect to the matrix grain. This independently nucleated deleterious grain constitutes distinct macro, dendritic and γ′ morphologies and forms a high angle boundary (HAB) in the conjunction area of SG and the matrix grain. Compositional distribution reveals that severe segregation could be identified in GB area due to compositional enrichment and deprivation during the last stage of solidification.

源语言	英语
页（从-至）	181-187
页数	7
期刊	Vacuum
卷	131
DOI	https://doi.org/10.1016/j.vacuum.2016.06.016
出版状态	已出版 - 1 9月 2016

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10.1016/j.vacuum.2016.06.016

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title = "Multi-scale characterization of stray grain in the platform of nickel-base single crystal turbine blade",

abstract = "Through comparatively characterizing the platforms with and without stray grain in multi-scale levels, it is determined that stray grain (SG) originates from heterogeneous nucleation with randomly distributed orientations with respect to the matrix grain. This independently nucleated deleterious grain constitutes distinct macro, dendritic and γ′ morphologies and forms a high angle boundary (HAB) in the conjunction area of SG and the matrix grain. Compositional distribution reveals that severe segregation could be identified in GB area due to compositional enrichment and deprivation during the last stage of solidification.",

keywords = "Characterization, Directional solidification, Nickel-base superalloy, Stray grain",

author = "Yafeng Li and Lin Liu and Taiwen Huang and Haifeng Wang and Jun Zhang and Hengzhi Fu",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

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doi = "10.1016/j.vacuum.2016.06.016",

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T1 - Multi-scale characterization of stray grain in the platform of nickel-base single crystal turbine blade

AU - Li, Yafeng

AU - Liu, Lin

AU - Huang, Taiwen

AU - Wang, Haifeng

AU - Zhang, Jun

AU - Fu, Hengzhi

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Through comparatively characterizing the platforms with and without stray grain in multi-scale levels, it is determined that stray grain (SG) originates from heterogeneous nucleation with randomly distributed orientations with respect to the matrix grain. This independently nucleated deleterious grain constitutes distinct macro, dendritic and γ′ morphologies and forms a high angle boundary (HAB) in the conjunction area of SG and the matrix grain. Compositional distribution reveals that severe segregation could be identified in GB area due to compositional enrichment and deprivation during the last stage of solidification.

AB - Through comparatively characterizing the platforms with and without stray grain in multi-scale levels, it is determined that stray grain (SG) originates from heterogeneous nucleation with randomly distributed orientations with respect to the matrix grain. This independently nucleated deleterious grain constitutes distinct macro, dendritic and γ′ morphologies and forms a high angle boundary (HAB) in the conjunction area of SG and the matrix grain. Compositional distribution reveals that severe segregation could be identified in GB area due to compositional enrichment and deprivation during the last stage of solidification.

KW - Characterization

KW - Directional solidification

KW - Nickel-base superalloy

KW - Stray grain

UR - https://www.scopus.com/pages/publications/84976421912

U2 - 10.1016/j.vacuum.2016.06.016

DO - 10.1016/j.vacuum.2016.06.016

M3 - 文章

AN - SCOPUS:84976421912

SN - 0042-207X

VL - 131

SP - 181

EP - 187

JO - Vacuum

JF - Vacuum

ER -

Multi-scale characterization of stray grain in the platform of nickel-base single crystal turbine blade

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