Shah, PrassanPrassanShahKhanna, NavneetNavneetKhannaSingla, Anil KumarAnil KumarSinglaBansal, AnujAnujBansal2025-08-312025-08-312021-11-0110.1016/j.triboint.2021.1071902-s2.0-85110493151https://d8.irins.org/handle/IITG2025/25236For the first time, thrust force, power consumption, flank tool wear using FE-SEM and line scan EDS analysis; hole quality indicators and hole surface analysis using FE-SEM, microhardness and chip morphology for drilling Ti-6Al-4V using cryogenic coolants (LN<inf>2</inf> and LCO<inf>2</inf>) and flood coolant are comprehensively investigated. 146 blind holes are drilled for all three cooling conditions. 72% and 50% lesser tool wear is observed for LCO<inf>2</inf> and LN<inf>2</inf> respectively, compared to flood machining. Adhesion wear mechanism is found to be the predominant factor leading to higher tool wear during flood machining. The demonstrated superior performance of LCO<inf>2</inf> for all the machinability indicators in this research is a significant finding for machining Ti-6Al-4V for the high-value manufacturing industries.falseCryogenic coolants | Drilling | Machinability indicators | Ti-6Al-4VArticleNovember 202145107190arJournal41