Abstract
Duplex stainless steel (DSS) presents a machining challenge due to its balanced Austenite-Ferrite composition, necessitating substantial coolant usage, elevating machining costs. Research focuses on evaluating the efficacy of PVD coating in dry cutting conditions when conducting orthogonal turning operations on DSS, utilizing WC-Co (uncoated), TiAlN, and TiAlSiN-coated Carbide tools. The assessment encompasses chemical composition analysis, microstructural examination, and characterization through SEM, EDS, XRD, Calo testing, and white light interferometry (Veeco Wyko NT 1900). Findings reveal that the TiAlN-coated tool outperforms others, demonstrating superior performance. While the TiAlSiN coating also displays a notable impact, the presence of oxygen traces compromises its tool performance. In addition to the mentioned analysis, this study simultaneously investigated surface roughness, cutting forces and chip compression ratios. These parameters were comprehensively examined to provide a more comprehensive understanding of the machining processes on DSS using various PVD-coated tools in a dry-cutting environment. This study underscores the significant advantage of employing TiAlN(sputter) coatings for enhancing machining efficiency in dry-cutting environments when dealing with DSS.
Published Version
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