Effect of post-deposition heat treatments on high-temperature wear and corrosion behavior of Inconel 625

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dc.contributor.authorKocaman, Engin
dc.contributor.authorGürol, Uğur
dc.contributor.authorGünen, Ali
dc.contributor.authorÇam, Gürel
dc.date.accessioned2024-12-13T08:58:44Z
dc.date.available2024-12-13T08:58:44Z
dc.date.issued2025
dc.departmentFakülteler, Mühendislik Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümü
dc.description.abstractThis study uses the arc-directed energy deposition method to fabricate and heat treatment of a Ni-based Inconel 625 wall structure. Heat treatment involved solution treatment at 980°C with and without aging at 720°C, comparing results to the as-built condition. The effects of these heat treatments were analyzed through microstructural investigations, nanoindentation tests, and high-temperature wear and corrosion tests in 0.5 M NaCl and 0.5 M HCl solutions. In the as-built state, the Inconel 625 alloy exhibited a columnar dendritic structure predominantly composed of a gamma matrix along with Laves phase and MC carbides. Solution treatment dissolved the Nb-rich Laves phases and encouraged the formation of needle-like particles in regions with high Nb segregation, while also reducing voids and minimizing corrosion susceptibility along grain boundaries. This resulted in the formation of a uniform oxide layer on the surface, significantly enhancing wear and corrosion resistance. Both heat-treated samples showed improvements in mechanical ratios such as H/E, H³/E², and H²/2E in the WAAM-produced Inconel 625 alloy, resulting in a 67 % enhancement in wear resistance compared to the as-built sample. Corrosion tests also revealed that solution treated samples showed the highest corrosion resistance, followed by aged treatment and as-built samples, respectively. In conclusion, this study provides a thorough understanding of the substantial impact of heat treatments on the microstructure, mechanical properties, and corrosion resistance of Inconel 625, offering valuable insights for advancements in the field.
dc.identifier.doi10.1016/j.mtcomm.2024.111101
dc.identifier.issn2352-4928
dc.identifier.scopus2-s2.0-85210536417
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.mtcomm.2024.111101
dc.identifier.urihttps://hdl.handle.net/11501/1578
dc.identifier.volume42
dc.identifier.wosWOS:001370829400001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakScopus
dc.indekslendigikaynakWeb of Science
dc.institutionauthorGürol, Uğur
dc.institutionauthorid0000-0002-3205-7226
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofMaterials Today Communications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectWAAM
dc.subjectInconel 625
dc.subjectHeat Treatment
dc.subjectHigh-Temperature Wear
dc.subjectCorrosion
dc.titleEffect of post-deposition heat treatments on high-temperature wear and corrosion behavior of Inconel 625
dc.typeArticle

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