Correlation Between Machinability and Chip Morphology of Austempered Ductile Iron

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dc.contributor.authorYazman, Şakir
dc.contributor.authorGemi, Lokman
dc.contributor.authorUludağ, Muhammet
dc.contributor.authorAkdemir, Ahmet
dc.contributor.authorUyaner, Mesut
dc.contributor.authorDışpınar, Derya
dc.date.accessioned2020-03-26T19:53:14Z
dc.date.available2020-03-26T19:53:14Z
dc.date.issued2018
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractIn this work, macrostructure, microstructure, and work hardening of as-cast and austempered ductile iron chips produced by different cutting speeds were investigated. Cutting forces, surface roughness, and tool wear were also studied. After austenitizing at 900 degrees C for 90 min, samples were austempered in a salt bath at 360 degrees C for 90 min. Machinability tests were conducted with uncoated cemented carbide tools on a CNC lathe. The tests were carried out without using any lubricant. In these tests, the cutting speed was varied in the range 50-200 m/min, while the feed rate (0.12 mm/rev) and depth of cut (2 mm) were kept constant. The tangential, feed, and radial cutting force components acting on the tool holder were measured with a three-component dynamometer. The chips obtained during machining were polished by embedding into epoxy resin, examined with optical microscope and micrographs were taken. The microhardness values were measured on each chip sample. As the cutting speed was increased, deformation strengthening of the microstructure was increased, which decreased the tool life. It was also detected that during the machining, with the effect of cutting forces and stress, spheroidal graphites were broken off in the chip and lost their sphericity, so the chip became fragile and unstable and the graphite displayed a lubricant feature. At low cutting speed, a built-up edge was observed. However, as the cutting speed was increased because of heating, built-up edges were unstable.en_US
dc.identifier.doi10.1520/JTE20160490en_US
dc.identifier.endpage1021en_US
dc.identifier.issn0090-3973en_US
dc.identifier.issn1945-7553en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage1012en_US
dc.identifier.urihttps://dx.doi.org/10.1520/JTE20160490
dc.identifier.urihttps://hdl.handle.net/20.500.12395/36446
dc.identifier.volume46en_US
dc.identifier.wosWOS:000433146300016en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAMER SOC TESTING MATERIALSen_US
dc.relation.ispartofJOURNAL OF TESTING AND EVALUATIONen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectductile ironsen_US
dc.subjectaustempered ductile ironsen_US
dc.subjectmachinabilityen_US
dc.subjecttool wearen_US
dc.subjectcutting forcesen_US
dc.subjectchip morphologyen_US
dc.subjectbuilt-up edgeen_US
dc.titleCorrelation Between Machinability and Chip Morphology of Austempered Ductile Ironen_US
dc.typeArticleen_US

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