Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing

Fatih Guler; Ahmet Arda Inceyer; Seda Kol; Metin Usta; Huseyin Aydin; Ozgul Keles

doi:10.1002/adem.202402805

Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing

Fatih Guler, Ahmet Arda Inceyer, Seda Kol, Metin Usta, Huseyin Aydin^*, Ozgul Keles^*

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

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

Abstract

Additively manufactured IN939 (AM-IN939) is promising for aeroengine turbine blades, where high-temperature oxidation resistance is essential. This study aims to enhance AM-IN939's high-temperature cyclic oxidation performance by applying nickel aluminide (NiAl) coating via the chemical vapor aluminizing process. Cyclic oxidation tests at 1050 °C for 240 cycles show a stable α-Al₂O₃ layer on NiAl-coated specimens, leading to weight gain due to its protective properties. Uncoated specimens form nonprotective oxides, including Cr₂O₃, TiO₂, CoCr₂O₄, and NiCr₂O₄, resulting in weight loss from spallation, with internal oxidation and nitridation observed. Overall, the NiAl coating significantly enhances the high-temperature cyclic oxidation resistance of AM-IN939.

Original language	English
Article number	2402805
Journal	Advanced Engineering Materials
Volume	27
Issue number	7
DOIs	https://doi.org/10.1002/adem.202402805
Publication status	Published - Apr 2025

Bibliographical note

Publisher Copyright:
© 2025 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.

Keywords

additively manufactured IN939
chemical vapor aluminizing
high-temperature cyclic oxidation
nickel aluminide coating
spallation

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10.1002/adem.202402805

Cite this

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title = "Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing",

abstract = "Additively manufactured IN939 (AM-IN939) is promising for aeroengine turbine blades, where high-temperature oxidation resistance is essential. This study aims to enhance AM-IN939's high-temperature cyclic oxidation performance by applying nickel aluminide (NiAl) coating via the chemical vapor aluminizing process. Cyclic oxidation tests at 1050 °C for 240 cycles show a stable α-Al2O3 layer on NiAl-coated specimens, leading to weight gain due to its protective properties. Uncoated specimens form nonprotective oxides, including Cr2O3, TiO2, CoCr2O4, and NiCr2O4, resulting in weight loss from spallation, with internal oxidation and nitridation observed. Overall, the NiAl coating significantly enhances the high-temperature cyclic oxidation resistance of AM-IN939.",

keywords = "additively manufactured IN939, chemical vapor aluminizing, high-temperature cyclic oxidation, nickel aluminide coating, spallation",

author = "Fatih Guler and Inceyer, \{Ahmet Arda\} and Seda Kol and Metin Usta and Huseyin Aydin and Ozgul Keles",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.",

year = "2025",

month = apr,

doi = "10.1002/adem.202402805",

language = "English",

volume = "27",

journal = "Advanced Engineering Materials",

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AU - Guler, Fatih

AU - Inceyer, Ahmet Arda

AU - Kol, Seda

AU - Usta, Metin

AU - Aydin, Huseyin

AU - Keles, Ozgul

PY - 2025/4

Y1 - 2025/4

N2 - Additively manufactured IN939 (AM-IN939) is promising for aeroengine turbine blades, where high-temperature oxidation resistance is essential. This study aims to enhance AM-IN939's high-temperature cyclic oxidation performance by applying nickel aluminide (NiAl) coating via the chemical vapor aluminizing process. Cyclic oxidation tests at 1050 °C for 240 cycles show a stable α-Al2O3 layer on NiAl-coated specimens, leading to weight gain due to its protective properties. Uncoated specimens form nonprotective oxides, including Cr2O3, TiO2, CoCr2O4, and NiCr2O4, resulting in weight loss from spallation, with internal oxidation and nitridation observed. Overall, the NiAl coating significantly enhances the high-temperature cyclic oxidation resistance of AM-IN939.

AB - Additively manufactured IN939 (AM-IN939) is promising for aeroengine turbine blades, where high-temperature oxidation resistance is essential. This study aims to enhance AM-IN939's high-temperature cyclic oxidation performance by applying nickel aluminide (NiAl) coating via the chemical vapor aluminizing process. Cyclic oxidation tests at 1050 °C for 240 cycles show a stable α-Al2O3 layer on NiAl-coated specimens, leading to weight gain due to its protective properties. Uncoated specimens form nonprotective oxides, including Cr2O3, TiO2, CoCr2O4, and NiCr2O4, resulting in weight loss from spallation, with internal oxidation and nitridation observed. Overall, the NiAl coating significantly enhances the high-temperature cyclic oxidation resistance of AM-IN939.

KW - additively manufactured IN939

KW - chemical vapor aluminizing

KW - high-temperature cyclic oxidation

KW - nickel aluminide coating

KW - spallation

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DO - 10.1002/adem.202402805

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ER -

Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing

Abstract

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Keywords

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