Microstructure and stress rupture properties of single crystal superalloy CMSX-2 under high thermal gradient directional solidification

L. Liu; T. W. Huang; J. Zhang; H. Z. Fu

doi:10.1016/j.matlet.2006.04.037

Microstructure and stress rupture properties of single crystal superalloy CMSX-2 under high thermal gradient directional solidification

L. Liu, T. W. Huang, J. Zhang, H. Z. Fu

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

113 引用（Scopus）

摘要

The interface morphologies of single crystal superalloy CMSX-2 were studied over a range of cooling rate with large variations in withdrawal speeds in directional solidification. A superfine cellular structure was obtained under both high thermal gradient up to 1000 K/cm and fast withdrawal rate up to 1 mm/s. The high rate directional solidification results in reduction in primary and secondary dendrite arm spacing, refinement of γ′ phase, reduced microsegregation of alloying elements and smaller size of γ-γ′ eutectics. The rupture life and plasticity of fine structure samples produced in high thermal gradient directional solidification increase significantly than that in conventional directional solidification process at 1323 K.

源语言	英语
页（从-至）	227-230
页数	4
期刊	Materials Letters
卷	61
期	1
DOI	https://doi.org/10.1016/j.matlet.2006.04.037
出版状态	已出版 - 1月 2007

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title = "Microstructure and stress rupture properties of single crystal superalloy CMSX-2 under high thermal gradient directional solidification",

abstract = "The interface morphologies of single crystal superalloy CMSX-2 were studied over a range of cooling rate with large variations in withdrawal speeds in directional solidification. A superfine cellular structure was obtained under both high thermal gradient up to 1000 K/cm and fast withdrawal rate up to 1 mm/s. The high rate directional solidification results in reduction in primary and secondary dendrite arm spacing, refinement of γ′ phase, reduced microsegregation of alloying elements and smaller size of γ-γ′ eutectics. The rupture life and plasticity of fine structure samples produced in high thermal gradient directional solidification increase significantly than that in conventional directional solidification process at 1323 K.",

keywords = "Directional solidification, Mechanical properties, Microstructure, Single crystal, Superalloy",

author = "L. Liu and Huang, {T. W.} and J. Zhang and Fu, {H. Z.}",

year = "2007",

month = jan,

doi = "10.1016/j.matlet.2006.04.037",

language = "英语",

volume = "61",

pages = "227--230",

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T1 - Microstructure and stress rupture properties of single crystal superalloy CMSX-2 under high thermal gradient directional solidification

AU - Liu, L.

AU - Huang, T. W.

AU - Zhang, J.

AU - Fu, H. Z.

PY - 2007/1

Y1 - 2007/1

N2 - The interface morphologies of single crystal superalloy CMSX-2 were studied over a range of cooling rate with large variations in withdrawal speeds in directional solidification. A superfine cellular structure was obtained under both high thermal gradient up to 1000 K/cm and fast withdrawal rate up to 1 mm/s. The high rate directional solidification results in reduction in primary and secondary dendrite arm spacing, refinement of γ′ phase, reduced microsegregation of alloying elements and smaller size of γ-γ′ eutectics. The rupture life and plasticity of fine structure samples produced in high thermal gradient directional solidification increase significantly than that in conventional directional solidification process at 1323 K.

AB - The interface morphologies of single crystal superalloy CMSX-2 were studied over a range of cooling rate with large variations in withdrawal speeds in directional solidification. A superfine cellular structure was obtained under both high thermal gradient up to 1000 K/cm and fast withdrawal rate up to 1 mm/s. The high rate directional solidification results in reduction in primary and secondary dendrite arm spacing, refinement of γ′ phase, reduced microsegregation of alloying elements and smaller size of γ-γ′ eutectics. The rupture life and plasticity of fine structure samples produced in high thermal gradient directional solidification increase significantly than that in conventional directional solidification process at 1323 K.

KW - Directional solidification

KW - Mechanical properties

KW - Microstructure

KW - Single crystal

KW - Superalloy

UR - http://www.scopus.com/inward/record.url?scp=33750628291&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2006.04.037

DO - 10.1016/j.matlet.2006.04.037

M3 - 文章

AN - SCOPUS:33750628291

SN - 0167-577X

VL - 61

SP - 227

EP - 230

JO - Materials Letters

JF - Materials Letters

IS - 1

ER -

Microstructure and stress rupture properties of single crystal superalloy CMSX-2 under high thermal gradient directional solidification

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