Tool life and wear mechanism of coated and uncoated Al2O3/TiCN mixed ceramic tools in turning hardened alloy steel

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dc.contributor.authorAslantaş, Kubilay
dc.contributor.authorUcun, İrfan
dc.contributor.authorÇiçek, Aydan
dc.date.accessioned2020-04-30T23:34:50Z
dc.date.available2020-04-30T23:34:50Z
dc.date.issued2012
dc.departmentDÜ, Teknoloji Fakültesi, Makine ve İmalat Mühendisliği Bölümüen_US
dc.descriptionAslantas, Kubilay/0000-0003-4558-4516en_US
dc.descriptionWOS: 000301159700049en_US
dc.description.abstractThe focus of this paper is the continuous turning of hardened AISI 52100 (similar to 63HRc) using coated and uncoated ceramic Al2O3-TiCN mixed inserts, which are cheaper than cubic boron nitride (CBN) or polycrystalline cubic boron nitride (PCBN). The machinability of hardened steel was evaluated by measurements of tool wear, tool life, and surface finish of the workpiece. Wear mechanisms and patterns of ceramic inserts in hard turning of hardened AISI 52100 are discussed. According to the results obtained, fracture and chipping type damages occur more frequently in uncoated tools, whereas crater wear is the more common type of damage in TiN coated tools. Most important result obtained from the study is that TiN coating and crater wear affect chip flow direction. In uncoated ceramic tool, the crater formation results in decrease of chip up-curl radius. Besides, uncoated cutting tool results in an increase in the temperature at the tool chip interface. This causes a thermal bi-metallic effect between the upper and lower sides of the chip that forces the chip to curl a smaller radius. Chips accumulate in front of the tool and stick to the workpiece depending on the length of the cutting time. This causes the surface quality to deteriorate. TiN coating not only ensures that the cutting tool is tougher, but also ensures that the surface quality is maintained during cutting processes. (C) 2011 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.wear.2011.11.010en_US
dc.identifier.endpage451en_US
dc.identifier.issn0043-1648
dc.identifier.issn1873-2577
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage442en_US
dc.identifier.urihttps://doi.org/10.1016/j.wear.2011.11.010
dc.identifier.urihttps://hdl.handle.net/20.500.12684/5232
dc.identifier.volume274en_US
dc.identifier.wosWOS:000301159700049en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofWearen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCutting toolen_US
dc.subjectSteelen_US
dc.subjectEngineering ceramicen_US
dc.subjectHard materialsen_US
dc.subjectPVD coatingsen_US
dc.titleTool life and wear mechanism of coated and uncoated Al2O3/TiCN mixed ceramic tools in turning hardened alloy steelen_US
dc.typeArticleen_US

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