Lucas Melo Queiroz

Abstract Machining Inconel 718, a high-strength superalloy with applications in critical industries, presents unique challenges. Conventional cutting fluid application has long been employed for machining Inconel 718 with cemented carbide tools. While it effectively provides cooling and lubrication, it raises significant sustainability concerns. It contributes substantially to production costs, poses environmental toxicity risks, and impacts workplace safety and environmental well-being.

Abstract Out of all the mechanical energy generated during material cutting, the majority is converted into heat, raising the temperature at the chip-tool interface, particularly in difficult-to-machine materials like Inconel 718, thereby diminishing tool lifespan. Consequently, various lubri-cooling methods mitigate issues related to high temperatures, such as reduced tool life and geometric distortions.

Abstract Inconel 718, valued for its remarkable mechanical, corrosion, and high-temperature resistance up to 700 °C, is a predominant material constituting almost half of all global superalloy usage. Nonetheless, its exceptional properties make it a challenging material to machine, generating elevated heat at the tool-chip interface that strains cutting tools. Although ceramic tools offer one avenue, cemented carbide tools, particularly in “S” grades, find utilization despite limitations.