Surface integrity of finished turned Ti–6Al–4V alloy with PCD tools using conventional and high pressure coolant supplies

By Emmanuel Okechukwu Ezugwu, J. Bonney, R. B. Silva, O. Çakır. 2007

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Sustainable machining of titanium alloys: A critical review (2017, methodology): “Ezugwu et al.27 recommended the use of uncoated carbide tools when compared to PCBN tools for improved machinability during high-speed turning of Ti-6Al-4V.”
The effects of cooling conditions on surface integrity in machining of Ti6Al4V alloy (2013, background): “Other research showed the effects of different cooling strategies, including cryogenic cooling, on surface and subsurface hardness, founding that it generally increases when a drastic cooling is applied [14, 19].”
Machining of Titanium Alloy (Ti-6Al-4V)—Theory to Application (2015, background): “Thus, lesser hardening effect as well as micro-structural damage are generated when high pressure coolant is used (Ezugwu et al., 2007a).”
A critical assessment of lubrication techniques in machining processes: a case for minimum quantity lubrication using vegetable oil-based lubricant (2013, background): “Despite the reported results from various authors, HPC machining is still not widely used because of the lack of the fundamental level of understanding the process (Ezugwu et al., 2007).”
Minimal quantity lubrication-MQL in grinding of Ti–6Al–4V titanium alloy (2009, background): “Generally, the hardening effect is due to high plastic flow rate combining with the heat generation at the primary shear zone [ 25 ].”