Solidification path of single-crystal nickel-base superalloys with minor carbon additions under laser rapid directional solidification conditions

Yao Jian Liang; Jia Li; An Li; Xiao Tong Pang; Hua Ming Wang

doi:10.1016/j.scriptamat.2016.08.039

Solidification path of single-crystal nickel-base superalloys with minor carbon additions under laser rapid directional solidification conditions

Yao Jian Liang, Jia Li^*, An Li, Xiao Tong Pang, Hua Ming Wang

^*Corresponding author for this work

Beihang University

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

59 Citations (Scopus)

Abstract

The solidification path of single-crystal nickel-base superalloys containing minor carbon was investigated under various laser rapid directional solidification (LRDS) conditions. By controlling the solidification rate, LRDS processing can provide the evidence whether some diffusion-controlled phase transformations occur because such transformations will be suppressed under high cooling rates. Results show that the solidification path and final solidification microstructure depend upon the cooling rate; the microstructure without γ-γ′ eutectic can be obtained as long as the cooling rate is high enough. A peritectic transformation in carbon-containing single-crystal superalloys was first experimentally verified by controlling the cooling rate during LRDS processing.

Original language	English
Pages (from-to)	58-62
Number of pages	5
Journal	Scripta Materialia
Volume	127
DOIs	https://doi.org/10.1016/j.scriptamat.2016.08.039
Publication status	Published - 15 Jan 2017
Externally published	Yes

Keywords

Laser treatment
Phase transformations
Rapid directional solidification
Solidification microstructure
Superalloy

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10.1016/j.scriptamat.2016.08.039

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Liang, Y. J., Li, J., Li, A., Pang, X. T., & Wang, H. M. (2017). Solidification path of single-crystal nickel-base superalloys with minor carbon additions under laser rapid directional solidification conditions. Scripta Materialia, 127, 58-62. https://doi.org/10.1016/j.scriptamat.2016.08.039

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title = "Solidification path of single-crystal nickel-base superalloys with minor carbon additions under laser rapid directional solidification conditions",

abstract = "The solidification path of single-crystal nickel-base superalloys containing minor carbon was investigated under various laser rapid directional solidification (LRDS) conditions. By controlling the solidification rate, LRDS processing can provide the evidence whether some diffusion-controlled phase transformations occur because such transformations will be suppressed under high cooling rates. Results show that the solidification path and final solidification microstructure depend upon the cooling rate; the microstructure without γ-γ′ eutectic can be obtained as long as the cooling rate is high enough. A peritectic transformation in carbon-containing single-crystal superalloys was first experimentally verified by controlling the cooling rate during LRDS processing.",

keywords = "Laser treatment, Phase transformations, Rapid directional solidification, Solidification microstructure, Superalloy",

author = "Liang, {Yao Jian} and Jia Li and An Li and Pang, {Xiao Tong} and Wang, {Hua Ming}",

note = "Publisher Copyright: {\textcopyright} 2016 Acta Materialia Inc.",

year = "2017",

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doi = "10.1016/j.scriptamat.2016.08.039",

language = "English",

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TY - JOUR

T1 - Solidification path of single-crystal nickel-base superalloys with minor carbon additions under laser rapid directional solidification conditions

AU - Liang, Yao Jian

AU - Li, Jia

AU - Li, An

AU - Pang, Xiao Tong

AU - Wang, Hua Ming

PY - 2017/1/15

Y1 - 2017/1/15

N2 - The solidification path of single-crystal nickel-base superalloys containing minor carbon was investigated under various laser rapid directional solidification (LRDS) conditions. By controlling the solidification rate, LRDS processing can provide the evidence whether some diffusion-controlled phase transformations occur because such transformations will be suppressed under high cooling rates. Results show that the solidification path and final solidification microstructure depend upon the cooling rate; the microstructure without γ-γ′ eutectic can be obtained as long as the cooling rate is high enough. A peritectic transformation in carbon-containing single-crystal superalloys was first experimentally verified by controlling the cooling rate during LRDS processing.

AB - The solidification path of single-crystal nickel-base superalloys containing minor carbon was investigated under various laser rapid directional solidification (LRDS) conditions. By controlling the solidification rate, LRDS processing can provide the evidence whether some diffusion-controlled phase transformations occur because such transformations will be suppressed under high cooling rates. Results show that the solidification path and final solidification microstructure depend upon the cooling rate; the microstructure without γ-γ′ eutectic can be obtained as long as the cooling rate is high enough. A peritectic transformation in carbon-containing single-crystal superalloys was first experimentally verified by controlling the cooling rate during LRDS processing.

KW - Laser treatment

KW - Phase transformations

KW - Rapid directional solidification

KW - Solidification microstructure

KW - Superalloy

UR - http://www.scopus.com/inward/record.url?scp=84986587230&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2016.08.039

DO - 10.1016/j.scriptamat.2016.08.039

M3 - Article

AN - SCOPUS:84986587230

SN - 1359-6462

VL - 127

SP - 58

EP - 62

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Solidification path of single-crystal nickel-base superalloys with minor carbon additions under laser rapid directional solidification conditions

Abstract

Keywords

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