Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Gazi University, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2019
Thesis Language: Turkish
Student: Omid Farid Ahmadınıa
Supervisor: GÖKHAN KÜÇÜKTÜRK
Abstract:Metal matrix composites (MMK) are materials that have high elastic modulus, high strength, high toughness, low density and high wear resistance compared to metal alloys. In this study, Al2014 matrix and B4C reinforced composite materials were produced by vacuum infiltration method at 0%, 5% and 10% reinforcement ratios. Optimum production parameters were used in the production of composite materials. The produced workpieces were machined with normal EDM and Powder Mixed Electro Discharge Machining (PM/EDM) and the results were compared with the workpieces that machined with EDM method. The effect of the processing parameters such as current and reinforcement ratio on Material Removal Rate (MRR) and Tool Wear Rate (TWR) were investigated. Furthermore, surface electron microscopy (SEM) were used to investigate surface changes after machining. Moreover, variance analysis was performed to determine the parameters effecting the machining performance. By using PM/EDM method, more stable machinability, higher machining speed and lower electrode wear has been obtained