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Performance evaluation of TiAlSiN and TiSiN/TiSiVN coatings during high-speed dry turning of AISI 316 L considering the role of vanadium-based tribo-oxides
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Orientador(es)
Resumo(s)
This study investigates the tribo-mechanical performance of uncoated, TiAlSiN-coated, and TiSiN/TiSiVN multilayer-coated Al2O3/SiC ceramic tools during dry turning of AISI 316 L austenitic steel across three successive passes at varying cutting speeds. Key machining outputs, including cutting forces, surface roughness, cutting temperature, and tool wear (flank and crater), were analyzed with a focus on oxide formation and selflubricating mechanisms. The TiSiN/TiSiVN-coated tool exhibited the most favorable performance, showing only ~15 % increase in cutting force across passes, ~9 % improvement in flank wear resistance compared to TiAlSiN, and ~ 17 % lower wear progression relative to the uncoated tool at 350 m/min. Surface roughness and cutting temperature trends further confirmed the coating’s superiority, attributed to the formation of V₂O₅ tribo-oxides, which reduce friction and thermal degradation. EDS and SEM analyses validated the wear protection mechanisms, highlighting the adaptive role of vanadium-based layers in mitigating adhesion and thermal fatigue. The results establish TiSiN/TiSiVN as a promising candidate for high-speed dry machining due to its superior mechanical-chemical synergy and wear resistance.
Descrição
Palavras-chave
TiSiN/TiSiVN coating dry turning self-lubricant coating tool wear AISI 316 L
Contexto Educativo
Citação
Ch. Sateesh Kumar, Luis Norberto López de Lacalle, Albano Cavaleiro, Diogo Cavaleiro, Mitjan Kalin, Ramanand Prajapati, Filipe Fernandes, Performance evaluation of TiAlSiN and TiSiN/TiSiVN coatings during high-speed dry turning of AISI 316 L considering the role of vanadium-based tribo-oxides, Surface and Coatings Technology, Volume 516, 2025, 132774, ISSN 0257-8972, https://doi.org/10.1016/j.surfcoat.2025.132774
Editora
Elsevier