Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing
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 ‐Al 2 O 3 layer on NiAl‐coated specimens, leading to weight gain due to its protective properties. Uncoated specimens form nonprotective oxides, including Cr 2 O 3 , TiO 2 , CoCr 2 O 4 , and NiCr 2 O 4 , 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.
Authors
- Hüseyin Aydın (ORCID: https://orcid.org/0000-0002-8600-2984)
- Metin Usta (ORCID: https://orcid.org/0000-0002-3977-9192)
- Özgül Keleş (ORCID: https://orcid.org/0000-0002-4656-5563)
- Fatih Güler (ORCID: https://orcid.org/0000-0002-3647-6487)
- Ahmet Arda İnceyer (ORCID: https://orcid.org/0000-0001-8086-1406)
- Seda Kol (ORCID: https://orcid.org/0000-0003-2545-7077)
Institutions
- Gebze Technical University (TR)
- TÜBİTAK Marmara Research Center (TR)
- Istanbul Technical University (TR)
Publication Details
- Journal
- Advanced Engineering Materials
- Published
- 2025-03-02
- DOI
- https://doi.org/10.1002/adem.202402805
- Citations
- 1
- Primary Topic
- Additive Manufacturing Materials and Processes
- Type
- article
- Field-Weighted Citation Impact
- 0.71