Cryogenic turning of Ti-15Mo alloy

Autor(es)

Rubio, Juan C. C. ; Ricci, Virgilio P. ; Rodrigues, Alessandro R. ; Kliauga, Andrea M. ; Ventura, Carlos E. H.

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY; v. 137, n. 7-8, p. 13-pg., 2025-03-24.

Resumo

Titanium alloys face challenges in machinability due to intrinsic properties such as high hardness (even at elevated temperatures), chemical affinity with various tool materials, and low thermal conductivity. Research has been mainly focused on improving the machining processes of titanium and its alloys in terms of tool life, surface quality, and productivity. Therefore, this study determines and explains the influence of the lubri-cooling environment on tool performance and surface characteristics in turning Ti-15Mo alloy at different cutting speeds. Not only wear types and mechanisms were assessed, but also the workpiece surface roughness and hardness. Cutting experiments were conducted in dry, wet, and cryogenic environments for comparison purposes. Results showed that liquid nitrogen delays tool wear more effectively than flood coolant. Additionally, material adhesion from the workpiece to the tool surface was observed in all cases, which, depending on the cutting speed, tended to either preserve or accelerate insert wear, potentially causing tool failure. Regarding the workpiece material characteristics, strain hardening occurred indistinctly for all cutting conditions, due to the occurrence of mechanical twinning. (AU)

• Processo FAPESP: 15/15622-2 - Influência dos parâmetros de retificação na fabricação de insertos de metal duro sobre seu desempenho no torneamento de uma liga de titânio
• Beneficiário: Carlos Eiji Hirata Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 17/12304-5 - EMU concedido no processo 15/15622-2: retificadora CNC para preparação de insertos de corte
• Beneficiário: Carlos Eiji Hirata Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 17/12309-7 - EMU concedido no processo 15/15622-2: microscópio para análise de imagens tridimensionais
• Beneficiário: Carlos Eiji Hirata Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 18/24614-1 - Plano de Aplicação Ano 2018 da Parcela da Reserva Técnica (Base 2017) para Custos de InfraEstrutura Institucional Centro de Ciências Exatas e de Tecnologia (CCET) UFSCAR
• Beneficiário: Luiz Fernando de Oriani e Paulillo
• Modalidade de apoio: Auxílio à Pesquisa - Reserva Técnica para Infraestrutura Institucional de Pesquisa