Effects of laser modes on Nb segregation and Laves phase formation during laser additive manufacturing of nickel-based superalloy

H. Xiao; S. M. Li; W. J. Xiao; Y. Q. Li; L. M. Cha; J. Mazumder; L. J. Song

doi:10.1016/j.matlet.2016.10.118

Effects of laser modes on Nb segregation and Laves phase formation during laser additive manufacturing of nickel-based superalloy

H. Xiao, S. M. Li, W. J. Xiao, Y. Q. Li, L. M. Cha, J. Mazumder, L. J. Song^*

^*Corresponding author for this work

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

121 Scopus citations

Abstract

Nb-bearing nickel-based superalloys were fabricated by laser additive manufacturing using both continuous-wave (CW) and quasi-continuous-wave (QCW) laser modes. Effects of laser modes on Nb segregation and Laves phase morphology were investigated. The responses to aging treatments of two different fabricated samples were also investigated. CW mode tends to develop columnar dendrites, relative severe Nb segregation and continuous distributed Laves phase, while QCW mode tends to produce fine equiaxed dendrites, less Nb segregations and fine discrete Laves phase. In addition, the QCW sample responses better to aging treatment than the CW sample.

Original language	English
Pages (from-to)	260-262
Number of pages	3
Journal	Materials Letters
Volume	188
DOIs	https://doi.org/10.1016/j.matlet.2016.10.118
State	Published - 1 Feb 2017
Externally published	Yes

Keywords

Deposition
Laser additive manufacturing
Laves phases
Segregation

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10.1016/j.matlet.2016.10.118

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title = "Effects of laser modes on Nb segregation and Laves phase formation during laser additive manufacturing of nickel-based superalloy",

abstract = "Nb-bearing nickel-based superalloys were fabricated by laser additive manufacturing using both continuous-wave (CW) and quasi-continuous-wave (QCW) laser modes. Effects of laser modes on Nb segregation and Laves phase morphology were investigated. The responses to aging treatments of two different fabricated samples were also investigated. CW mode tends to develop columnar dendrites, relative severe Nb segregation and continuous distributed Laves phase, while QCW mode tends to produce fine equiaxed dendrites, less Nb segregations and fine discrete Laves phase. In addition, the QCW sample responses better to aging treatment than the CW sample.",

keywords = "Deposition, Laser additive manufacturing, Laves phases, Segregation",

author = "H. Xiao and Li, {S. M.} and Xiao, {W. J.} and Li, {Y. Q.} and Cha, {L. M.} and J. Mazumder and Song, {L. J.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.matlet.2016.10.118",

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TY - JOUR

T1 - Effects of laser modes on Nb segregation and Laves phase formation during laser additive manufacturing of nickel-based superalloy

AU - Xiao, H.

AU - Li, S. M.

AU - Xiao, W. J.

AU - Li, Y. Q.

AU - Cha, L. M.

AU - Mazumder, J.

AU - Song, L. J.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Nb-bearing nickel-based superalloys were fabricated by laser additive manufacturing using both continuous-wave (CW) and quasi-continuous-wave (QCW) laser modes. Effects of laser modes on Nb segregation and Laves phase morphology were investigated. The responses to aging treatments of two different fabricated samples were also investigated. CW mode tends to develop columnar dendrites, relative severe Nb segregation and continuous distributed Laves phase, while QCW mode tends to produce fine equiaxed dendrites, less Nb segregations and fine discrete Laves phase. In addition, the QCW sample responses better to aging treatment than the CW sample.

AB - Nb-bearing nickel-based superalloys were fabricated by laser additive manufacturing using both continuous-wave (CW) and quasi-continuous-wave (QCW) laser modes. Effects of laser modes on Nb segregation and Laves phase morphology were investigated. The responses to aging treatments of two different fabricated samples were also investigated. CW mode tends to develop columnar dendrites, relative severe Nb segregation and continuous distributed Laves phase, while QCW mode tends to produce fine equiaxed dendrites, less Nb segregations and fine discrete Laves phase. In addition, the QCW sample responses better to aging treatment than the CW sample.

KW - Deposition

KW - Laser additive manufacturing

KW - Laves phases

KW - Segregation

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U2 - 10.1016/j.matlet.2016.10.118

DO - 10.1016/j.matlet.2016.10.118

M3 - 文章

AN - SCOPUS:85028270464

SN - 0167-577X

VL - 188

SP - 260

EP - 262

JO - Materials Letters

JF - Materials Letters

ER -

Effects of laser modes on Nb segregation and Laves phase formation during laser additive manufacturing of nickel-based superalloy

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Keywords

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