Fatih Guler, Ahmet Arda Inceyer, Seda Kol, Metin Usta, Huseyin Aydin, Ozgul Keles
{"title":"Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing","authors":"Fatih Guler, Ahmet Arda Inceyer, Seda Kol, Metin Usta, Huseyin Aydin, Ozgul Keles","doi":"10.1002/adem.202402805","DOIUrl":null,"url":null,"abstract":"<p>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 <i>α</i>-Al<sub>2</sub>O<sub>3</sub> layer on NiAl-coated specimens, leading to weight gain due to its protective properties. Uncoated specimens form nonprotective oxides, including Cr<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>, CoCr<sub>2</sub>O<sub>4</sub>, and NiCr<sub>2</sub>O<sub>4</sub>, 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.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4000,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202402805","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Engineering Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adem.202402805","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
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.
期刊介绍：
Advanced Engineering Materials is the membership journal of three leading European Materials Societies
- German Materials Society/DGM,
- French Materials Society/SF2M,
- Swiss Materials Federation/SVMT.
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