Sustainable Vegetable Oil-Based Minimum Quantity Lubrication Assisted Machining of AZ91 Magnesium Alloy: A Grey Relational Analysis-Based Study

The implementation of magnesium alloys in a multitude industries has been proven to be mere effect their attractive light weight, corrosion resistant, and biodegradable properties. These traits allow these materials portray an excellent sustainable machinability. However, with increasing demand, it is essential explore means production while mitigating reductions sustainability. current work aims assess optimize the high-speed machinability AZ91 use vegetable oil-based minimum quantity lubrication (MQL) system using grey relational analysis (GRA) on basis chip morphology tool wear. investigation entailed full factorial design MQL flow rate, cutting speed, feed rate as control parameters flank wear, land width, contact length, saw-tooth pitch, segmentation ratio, compression shear angle output responses. optimal predicted experimentally confirmed were 40 mL/h, speed 300 m/min, 0.3 mm/rev. usage said results grade improvement 0.2675 comparison referenced first experimental run. Moreover, was regarded critical variable contribution percentage 20% for grade.