Kam, Menderesİpekçi, AhmetArgun, Kudbeddin2023-07-262023-07-2620220954-40892041-3009https://doi.org/10.1177/09544089221078133https://hdl.handle.net/20.500.12684/12953Electrical Discharge Machining (EDM) is commonly used as non-traditional manufacturing methods for geometrically complex shaped or hardened materials that are extremely difficult-to-machine with traditional machining processes. In this experimental study, investigations were carried out on the machining of Conventional Heat Treated three different deep cryogenically treated and tempering processes (DCT&T) of AISI 4140 steels in EDM process. The process parameter such as discharge current (9, 16, 23, and 30 A), pulse on time (120, 180, 240, 300 mu s) and pulse off time (12, 18, 24, and 30 mu s) were investigated and the output responses like surface roughness, electrode wear ratio, material removal rate, and machining time were explored. Experiments were conducted using L-16 orthogonal array in EDM machining process. The data obtained from experiments were analyzed. As a result, determination of discharge current (30 Amps), pulse off time (12 to 18 mu s), pulse on time (180 to 240 mu s) and deep cryogenically treatment with 24 h and 48 h holding time as the optimum machining processing parameters for tempered steels to be subjected to DCT&T process. As a result of multi-criteria optimization, it is suitable for best surface quality and fast material removal rate.en10.1177/09544089221078133info:eu-repo/semantics/closedAccessEdm; Aisi 4140 Steel; Cu Electrode; Surface Roughness; Machinability; Electrode Wear; Taguchi; OptimizationVibration Damping Capacity; Tool Wear; Edm; TaguchiArticle2365192719352-s2.0-85124885052WOS:000753530800001Q3Q3