The effects of cooling conditions on surface integrity in machining of Ti6Al4V alloy

By Giovanna Rotella, O. Dillon, Domenico Umbrello, Luca Settineri, I. S. Jawahir. The International Journal of Advanced Manufacturing Technology, 2013

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Cryogenic Machining-Induced Surface Integrity: A Review and Comparison with Dry, MQL, and Flood-Cooled Machining (2014, background): “It was reported in their study that cryogenic coolant improves the XRD mechanism containing the regrowth phase; however, dry machining results in a higher β volume fraction, which is beneficial for increased material strength at room temperature (Rotella et al., 2014).”
Application of sustainable techniques in metal cutting for enhanced machinability: a review (2015, background): “The major drawback of dry cutting operation is that sometimes strong adhesion between tool rake face and chip takes place for some combinations of tool and work materials (Chetan et al., 2014; Rotella et al., 2014).”
Hybrid cryogenic MQL for improving tool life in machining of Ti-6Al-4V titanium alloy (2019, background): “Various cooling/lubricating techniques have been proposed to improve the machinability of titanium alloys such as minimum quantity lubrication (MQL) [13], cryogenic machining [14], high pressure emulsion cooling [15], etc.”
Sustainable machining of titanium alloys: A critical review (2017, methodology): “A recent study on the application of cryogenic cooling during orthogonal turning was conducted by Rotella et al.61 on Ti-6Al-4V alloy with various settings of feed rate and cutting speed under dry, cryogenic (coolant LN2 applied through a 2-mm nozzle with a pressure of 12 bar creating a surface temp”