Evaluation of tool wear, surface roughness/topography and chip morphology when machining of Ni-based alloy 625 under MQL, cryogenic cooling and CryoMQL

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dc.contributor.authorYıldırım, Çağrı Vakkas
dc.contributor.authorKıvak, Turgay
dc.contributor.authorSarıkaya, Murat
dc.contributor.authorŞirin, Şenol
dc.date.accessioned2020-04-30T13:32:28Z
dc.date.available2020-04-30T13:32:28Z
dc.date.issued2019
dc.departmentDÜ, Teknoloji Fakültesi, Makine ve İmalat Mühendisliği Bölümüen_US
dc.description.abstractAlthough nickel-based aerospace superalloys such as alloy 625 have superior properties including high-tensile and fatigue strength, corrosion resistance and good weldability, etc., its machinability is a difficult task which can be solved with alternative cooling/lubrication strategies. It is also important that these solution methods are sustainable. In order to facilitate the machinability of alloy 625 with sustainable techniques, we investigated the effect of minimum quantity lubrication (MQL), cryogenic cooling with liquid nitrogen (LN2) and hybrid-CryoMQL methods on tool wear behavior, cutting temperature, surface roughness/topography and chip morphology in a turning operation. The experiments were performed at three cutting speeds (50, 75 and 100 m/min), fixed cutting depth (0.5 mm) and feed rate (0.12 mm/rev). As a result, CryoMQL improved surface roughness (1.42 ?m) by 24.82% compared to cryogenic cooling. The medium level of cutting speed (75 m/min) can be preferred for the lowest roughness value and lowest peak-to-valley height when turning of alloy 625. Further, tool wear is decreased by 50.67% and 79.60% by the use of MQL and CryoMQL compared with cryogenic machining. An interesting result that MQL is more effective than cryogenic machining in reducing cutting tool wear. © 2019 The Authors.en_US
dc.description.sponsorshipFBA/2018/8074en_US
dc.description.sponsorshipThe authors thank the Erciyes University Research Fund for financial support (Project Number: FBA/2018/8074 ).en_US
dc.identifier.doi10.1016/j.jmrt.2019.12.069en_US
dc.identifier.issn2238-7854
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.jmrt.2019.12.069
dc.identifier.urihttps://hdl.handle.net/20.500.12684/306
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Editora Ltdaen_US
dc.relation.ispartofJournal of Materials Research and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectChip morphology; Hybrid cooling/lubrication; Ni-based aerospace alloy; Surface topography; Tool wearen_US
dc.titleEvaluation of tool wear, surface roughness/topography and chip morphology when machining of Ni-based alloy 625 under MQL, cryogenic cooling and CryoMQLen_US
dc.typeArticleen_US

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