Improving oxidation resistance of wire arc additive manufactured Inconel 625 Ni-based superalloy by pack aluminizing

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dc.authoridGürol, Uğur/0000-0002-3205-7226
dc.authoridgunen, ali/0000-0002-4101-9520
dc.authoridCam, Gurel/0000-0003-0222-9274
dc.authorwosidBÖLÜKBAŞI, Ömer Saltuk/AAY-3535-2020
dc.authorwosidGürol, Uğur/AAN-1097-2021
dc.contributor.authorBolukbasi, Omer Saltuk
dc.contributor.authorSerindag, Tarik
dc.contributor.authorGurol, Ugur
dc.contributor.authorGunen, Ali
dc.contributor.authorCam, Guerel
dc.date.accessioned2024-06-13T20:17:55Z
dc.date.available2024-06-13T20:17:55Z
dc.date.issued2023
dc.departmentİstanbul Gedik Üniversitesien_US
dc.description.abstractThe aluminide coating layer was formed on wire arc additive manufactured (WAAM) Inconel 625 (IN625) Ni-based superalloy by a pack-aluminizing process at 700 degrees C for 3 h. The aluminide coatings were evaluated utilizing X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and nanoindentation techniques. In addition, the oxidation performances of the aluminide coatings were compared with as-built WAAM IN625 samples based on their exposure in the open-air environment for 5, 25, and 50 h at 1000 degrees C. The aluminizing process provided a dense aluminide coating with a thickness of 35 mu m, continuous throughout the surface. The coating layer consists of mainly NiAl, Ni2Al3, Cr2Al, and MoAl5 phases and exhibited a nano-hardness of 12.85 +/- 0.43 GPa. Moreover, the applied heat treatment also improved the surface hardness and elasticity modules of WAAM Inconel 625. The stability of aluminide phases (NiAl, Ni2Al3) at temperatures exceeding 1000 degrees C and the formation of stable Al2O3 oxide islands on the surface provided 6.63 times, 2.70 times, and 2.65 times better oxidation resistance in the aluminized samples than the as-built WAAM IN625 in the 5 h, 25 h and 50 h oxidation periods at 1000 degrees C, respectively. In contrast, the increase in the oxidation time changed the oxidation mechanism of as-built WAAM IN625 from Cr2O3 to Cr2O3 and spinel phases such as NiCr2O4, NiMoO4, and NiO. On the other hand, the increase in the oxidation time in aluminized samples caused Kirkendall voids formation and their degradation. Therefore, it was concluded that the mechanical properties could be improved, and the oxidation resistance of these alloys could be improved with the aluminizing heat treatment.(c) 2023 CIRP.en_US
dc.identifier.doi10.1016/j.cirpj.2023.07.011
dc.identifier.endpage97en_US
dc.identifier.issn1755-5817
dc.identifier.issn1878-0016
dc.identifier.scopus2-s2.0-85168247426en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage89en_US
dc.identifier.urihttps://doi.org/10.1016/j.cirpj.2023.07.011
dc.identifier.urihttps://hdl.handle.net/11501/1145
dc.identifier.volume46en_US
dc.identifier.wosWOS:001148439700001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofCirp Journal of Manufacturing Science and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectWire Arc Additiveen_US
dc.subjectInconel 625en_US
dc.subjectAluminizingen_US
dc.subjectCharacterizationen_US
dc.subjectOxidationen_US
dc.subjectCorrosion-Resistanceen_US
dc.subjectCoatingsen_US
dc.subjectMicrostructureen_US
dc.subjectBehavioren_US
dc.subjectAlloyen_US
dc.titleImproving oxidation resistance of wire arc additive manufactured Inconel 625 Ni-based superalloy by pack aluminizingen_US
dc.typeArticleen_US

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