Simulation of stray grain formation at the platform during Ni-base single crystal superalloy DD403 casting

Si Feng Gao; Lin Liu; Jun Zhang; Jun Feng Xiao; Wen Shu Tang; Yong Jun Li; Qing Nan

Simulation of stray grain formation at the platform during Ni-base single crystal superalloy DD403 casting

Si Feng Gao, Lin Liu, Jun Zhang, Jun Feng Xiao, Wen Shu Tang, Yong Jun Li, Qing Nan

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

10 引用（Scopus）

摘要

The mechanism of stray grain formation at the platform of turbine blade simulator and the effect of withdrawal rate (V) on the stray grain phenomenon have been investigated using a macro-scale ProCAST coupled with a 3D Cellular Automaton Finite Element (CAFE) model. The results indicate that the stray grains nucleate at the edges of platform at V =150 μm·s-¹ and 200 μm·s-¹. Using ProCAST computer simulation software, it was proven that the stray grain formation is significantly dependent on the undercooling and the temperature field distribution in the platform. The macroscopic curvature of the liquidus isotherm becomes markedly concave with an increase in the withdrawal rate. The probability of stray grain formation at the edges of platform can be increased by increasing the withdrawal rate in the range of 70 μm·s-¹ to 200 μm·s-¹.

源语言	英语
文章编号	1672-6421(2015)02-118-05
页（从-至）	118-122
页数	5
期刊	China Foundry
卷	12
期	2
出版状态	已出版 - 2015

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@article{2913c631d0594c939bd024fa27059deb,

title = "Simulation of stray grain formation at the platform during Ni-base single crystal superalloy DD403 casting",

abstract = "The mechanism of stray grain formation at the platform of turbine blade simulator and the effect of withdrawal rate (V) on the stray grain phenomenon have been investigated using a macro-scale ProCAST coupled with a 3D Cellular Automaton Finite Element (CAFE) model. The results indicate that the stray grains nucleate at the edges of platform at V =150 μm·s-1 and 200 μm·s-1. Using ProCAST computer simulation software, it was proven that the stray grain formation is significantly dependent on the undercooling and the temperature field distribution in the platform. The macroscopic curvature of the liquidus isotherm becomes markedly concave with an increase in the withdrawal rate. The probability of stray grain formation at the edges of platform can be increased by increasing the withdrawal rate in the range of 70 μm·s-1 to 200 μm·s-1.",

keywords = "Directional Solidification, Nickel-based single crystal superalloy, Stray grains, Undercooling",

author = "Gao, {Si Feng} and Lin Liu and Jun Zhang and Xiao, {Jun Feng} and Tang, {Wen Shu} and Li, {Yong Jun} and Qing Nan",

year = "2015",

language = "英语",

volume = "12",

pages = "118--122",

journal = "China Foundry",

issn = "1672-6421",

publisher = "Springer Nature",

number = "2",

}

TY - JOUR

T1 - Simulation of stray grain formation at the platform during Ni-base single crystal superalloy DD403 casting

AU - Gao, Si Feng

AU - Liu, Lin

AU - Zhang, Jun

AU - Xiao, Jun Feng

AU - Tang, Wen Shu

AU - Li, Yong Jun

AU - Nan, Qing

PY - 2015

Y1 - 2015

N2 - The mechanism of stray grain formation at the platform of turbine blade simulator and the effect of withdrawal rate (V) on the stray grain phenomenon have been investigated using a macro-scale ProCAST coupled with a 3D Cellular Automaton Finite Element (CAFE) model. The results indicate that the stray grains nucleate at the edges of platform at V =150 μm·s-1 and 200 μm·s-1. Using ProCAST computer simulation software, it was proven that the stray grain formation is significantly dependent on the undercooling and the temperature field distribution in the platform. The macroscopic curvature of the liquidus isotherm becomes markedly concave with an increase in the withdrawal rate. The probability of stray grain formation at the edges of platform can be increased by increasing the withdrawal rate in the range of 70 μm·s-1 to 200 μm·s-1.

AB - The mechanism of stray grain formation at the platform of turbine blade simulator and the effect of withdrawal rate (V) on the stray grain phenomenon have been investigated using a macro-scale ProCAST coupled with a 3D Cellular Automaton Finite Element (CAFE) model. The results indicate that the stray grains nucleate at the edges of platform at V =150 μm·s-1 and 200 μm·s-1. Using ProCAST computer simulation software, it was proven that the stray grain formation is significantly dependent on the undercooling and the temperature field distribution in the platform. The macroscopic curvature of the liquidus isotherm becomes markedly concave with an increase in the withdrawal rate. The probability of stray grain formation at the edges of platform can be increased by increasing the withdrawal rate in the range of 70 μm·s-1 to 200 μm·s-1.

KW - Directional Solidification

KW - Nickel-based single crystal superalloy

KW - Stray grains

KW - Undercooling

UR - http://www.scopus.com/inward/record.url?scp=84928016689&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:84928016689

SN - 1672-6421

VL - 12

SP - 118

EP - 122

JO - China Foundry

JF - China Foundry

IS - 2

M1 - 1672-6421(2015)02-118-05

ER -

Simulation of stray grain formation at the platform during Ni-base single crystal superalloy DD403 casting

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