Research Information System
This research investigates the tribological properties and machining behavior of Inconel 718 (IN718) alloys manufactured through laser powder bed fusion (LPBF) and forging methods. The effects of different environments & horbar; dry, oil, and nanofluids enriched with SiC, Al2O3, and MWCNTs-on wear rates, friction coefficients, tool wear, and surface roughness were examined. Under dry conditions, LPBF-IN718 samples exhibited higher friction coefficients and wear rates compared to forged-IN718, mainly due to increased surface roughness and microcrack formation. However, the use of oil and nanofluid environments significantly enhanced the friction and wear performance of both materials, with SiC enriched nanofluids showing the greatest improvements, reducing friction and wear by up to 73.19 % and 91.06 %, respectively. The machining tests revealed that minimum quantity lubrication (MQL) and nanofluids significantly decreased tool wear and enhanced surface finish, resulting in up to a 64 % improvement compared to dry machining. This study contributes to more sustainable production processes, reducing both environmental impact and operational costs by optimizing the use of nanofluids in the machining of IN718 alloys.
