Determination of the Optimum Conditions for Machining NiTi Shape Memory Alloys by Electrical Discharge Machining

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dc.contributor.authorGüven, Sedat
dc.contributor.authorYilmaz, Metehan
dc.contributor.authorGökkaya, Hasan
dc.contributor.authorNas, Engin
dc.date.accessioned2025-10-11T20:45:19Z
dc.date.available2025-10-11T20:45:19Z
dc.date.issued2024
dc.departmentDüzce Üniversitesien_US
dc.description.abstractIn this study, the machinability of nickel-titanium (NiTi) shape memory alloys (SMAs) was investigated via an unconventional manufacturing method. Experimental studies with electrical discharge machining (EDM) methods were carried out with three different electrodes (copper, graphite, and tungsten-copper) in a dielectric fluid (dielectricum 358). The experimental parameters were three different currents (6, 12, 18 A), pulse durations (200, 400, 600 µs), constant voltage (3 V) and pulse-off time (50 µs). The aim was to determine the most suitable cutting conditions in terms of the material removal rate (MRR) and average surface roughness (SR) from the experiments performed with these parameter values. After the machining operations, the experimental samples and electrode diameters were measured and compared. In addition, gaps and cracks were detected by scanning electron microscopy (SEM) images taken from the workpiece surface. Energy dispersive spectroscopy (EDX) analysis was carried out to determine the extent to which the electrode material broke during the machining process adhered to the sample surface. Analysis of variance (ANOVA) was applied to determine the influence of the experimental parameters on the variables. The use of different electrode materials did not significantly affect the MRR or SR, while the overcut was the most significant and most effective input parameter. In addition, the presence of blobs, debris, lumps, microcracks and pores was determined from the surface images. On the surfaces where high SRs were measured, it was determined that Cu and W residues, which were detached from the electrode material and could not be removed from the cutting zone with dielectric fluid, were adhered to the workpiece surface. © 2024 Elsevier B.V., All rights reserved.en_US
dc.identifier.doi10.1007/s40032-024-01099-z
dc.identifier.endpage1046en_US
dc.identifier.issn2250-0553
dc.identifier.issn2250-0545
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-85206353890en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage1035en_US
dc.identifier.urihttps://doi.org/10.1007/s40032-024-01099-z
dc.identifier.urihttps://hdl.handle.net/20.500.12684/21279
dc.identifier.volume105en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of The Institution of Engineers (India): Series Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKA_Scopus_20250911
dc.subjectElectrical Discharge Machiningen_US
dc.subjectMaterial Removal Rateen_US
dc.subjectShape Memory Alloysen_US
dc.subjectSurface Roughnessen_US
dc.subjectSurface Topographyen_US
dc.subjectCopper Alloysen_US
dc.subjectCutting Fluidsen_US
dc.subjectDielectric Properties Of Liquidsen_US
dc.subjectElectric Dischargesen_US
dc.subjectMercury Amalgamsen_US
dc.subjectMicrocracksen_US
dc.subjectNickel Alloysen_US
dc.subjectTitanium Alloysen_US
dc.subjectDielectric Fluiden_US
dc.subjectElectrical Discharge Machiningen_US
dc.subjectElectrode Materialen_US
dc.subjectExperimental Parametersen_US
dc.subjectMaterial Removal Rateen_US
dc.subjectMemory Alloyen_US
dc.subjectNickel-titanium Shape Memory Alloysen_US
dc.subjectOptimum Conditionsen_US
dc.subjectShape-memoryen_US
dc.subjectWorkpieceen_US
dc.subjectEnergy Dispersive Spectroscopyen_US
dc.titleDetermination of the Optimum Conditions for Machining NiTi Shape Memory Alloys by Electrical Discharge Machiningen_US
dc.typeArticleen_US

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