Performances of different eco-friendly nanofluid lubricants in the milling of Inconel X-750 superalloy

Abstract

This study investigated the effects of eco-friendly cutting conditions on machining performance in the milling of Inconel X-750 superalloy. To this purpose, a total of 14 different eco-friendly cutting conditions, including dry, base fluid and three different nanofluids at four different concentrations were tested. Surface roughness, cutting temperature, cutting force, tool wear and tool life were addressed as performance criteria. According to the test results, the use of base fluid increased the machining performance significantly compared to the dry cutting; however, the best results on all performance characteristics were obtained under nanofluid cutting conditions. The optimal concentration for the nanofluids was determined as 0.50 vol% and the hexagonal boron nitride (hBN) nanofluid was shown to be superior to the MoS 2 and graphite nanofluids. • Milling performance of Inconel X-750 under eco-friendly conditions was examined. • Dry, base fluid, hBN, graphite and MoS 2 nanofluid cutting conditions were tested. • Performance criteria included roughness, force, temperature, and tool wear/life. • Nanofluid cutting conditions gave the best results for all performance criteria. • The 0.5 vol% hBN nanofluid provided significant improvement in machining performance.