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dc.contributor.authorGünen, Ali
dc.contributor.authorDöleker, Kadir Mert
dc.contributor.authorKorkmaz, Mehmet Erdi
dc.contributor.authorGök, Mustafa Sabri
dc.contributor.authorErdoğan, Azmi
dc.date.accessioned2021-06-09T09:19:52Z
dc.date.available2021-06-09T09:19:52Z
dc.date.issued2021en_US
dc.identifier.citationGünen, A., Döleker, K.M., Korkmaz, M.E., Gök, M.S., Erdogan, A. (2021). Characteristics, high temperature wear and oxidation behavior of boride layer grown on nimonic 80A Ni-based superalloy. Surface and Coatings Technology, 409, art. no. 126906. https://doi.org/10.1016/j.surfcoat.2021.126906en_US
dc.identifier.urihttps://doi.org/10.1016/j.surfcoat.2021.126906
dc.identifier.urihttps://hdl.handle.net/20.500.12508/1747
dc.description.abstractNickel-based superalloy Nimonic 80A was pack-borided in a solid medium at temperatures of 850 degrees C and 950 degrees C for 2 h and 4 h using silicon-free boriding powders. To investigate the effects of the boriding treatments on mechanical properties (hardness, modulus of elasticity, fracture toughness) and high temperature oxidation resistance, the layers grown on the surfaces were characterized using optical and scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffractometry, and evaluated using microhardness, nanoindentation, wear and oxidation tests. Wear tests were performed on untreated and borided Nimonic 80A alloys using a ball-on-disc tribometer at room temperature and at 500 degrees C under dry sliding conditions. Oxidation tests were carried out in air at 1000 degrees C for 5 h, 25 h and 75 h. Characterization studies revealed a smooth, 22 to 86 mu m thick crack-free boride layer consisting mainly of Ni2B and minor quantities of CrB, Cr2B and Cr5B3 in the borided samples. The hardness and elastic modulus of the boride layer was measured as 15.57-18.95 GPa and 142-217 GPa, respectively. Increasing the boriding temperature and time increased the concentrations of chromium in the boride layer. The hardness and elastic modulus of the boride layer increased with chromium content while its fracture toughness decreased. The boriding treatments improved the dry sliding wear resistance. Increasing boriding time and temperature generally led to a higher wear resistance values. However, the treatments had no significant effect on oxidation resistance. The results of this study show that boriding can significantly improve the wear resistance of Nimonic 80A without compromising its oxidation resistance.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.isversionof10.1016/j.surfcoat.2021.126906en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNi based superalloyen_US
dc.subjectBoridingen_US
dc.subjectMechanical propertiesen_US
dc.subjectHigh temperatureen_US
dc.subjectWearen_US
dc.subjectOxidationen_US
dc.subject.classificationMaterials Science
dc.subject.classificationCoatings & Films
dc.subject.classificationPhysics
dc.subject.classificationApplied
dc.subject.classificationBoriding
dc.subject.classificationChromium Borides
dc.subject.classificationNimonic Alloys
dc.subject.otherWork tool steel
dc.subject.otherMechanical-properties
dc.subject.otherFracture-toughness
dc.subject.otherTribological behavior
dc.subject.otherAlloy
dc.subject.otherResistance
dc.subject.otherKinetics
dc.subject.otherStability
dc.subject.otherChromium
dc.subject.otherCoatings
dc.subject.otherBorides
dc.subject.otherBoriding
dc.subject.otherChromium
dc.subject.otherChromium compounds
dc.subject.otherElastic moduli
dc.subject.otherEnergy dispersive spectroscopy
dc.subject.otherFracture toughness
dc.subject.otherHardness
dc.subject.otherNickel alloys
dc.subject.otherNickel compounds
dc.subject.otherOxidation resistance
dc.subject.otherScanning electron microscopy
dc.subject.otherSuperalloys
dc.subject.otherThermooxidation
dc.subject.otherWear of materials
dc.subject.otherX ray diffraction analysis
dc.subject.otherCharacterization studies
dc.subject.otherChromium contents
dc.subject.otherHardness and elastic modulus
dc.subject.otherHigh temperature wear
dc.subject.otherNi-based superalloys
dc.subject.otherNickel- based superalloys
dc.subject.otherOxidation behaviors
dc.subject.otherResistance values
dc.subject.otherWear resistance
dc.titleCharacteristics, high temperature wear and oxidation behavior of boride layer grown on nimonic 80A Ni-based superalloyen_US
dc.typearticleen_US
dc.relation.journalSurface and Coatings Technologyen_US
dc.contributor.departmentMühendislik ve Doğa Bilimleri Fakültesi -- Metalurji ve Malzeme Mühendisliği Bölümüen_US
dc.identifier.volume409en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.isteauthorGünen, Ali
dc.relation.indexWeb of Science - Scopusen_US
dc.relation.indexWeb of Science Core Collection - Science Citation Index Expanded


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