Machinability of B4C-reinforced Al2014 metal matrix composites in electric discharge machining




Al2014, B4C, Metal matrix composite, Powder mixed electric discharge machining, Vacuum infiltration


This study was conducted to clarify the effect of various variables such as the type of electric discharge machining, discharge current and reinforcement content of B4C-reinforced Al alloy metal matrix composite on workpiece removal rate, electrode wear rate and material removed per discharge pulse, which are not extensively explored in the literature. B4C-reinforced Al2014 matrix composite samples containing 5 and 10 vol.-% B4C particles, produced by vacuum infiltration method, were machined with electric discharge machining and powder mixed electric discharge machining at various discharge current settings. In both types of machining processes, the workpiece removal rate and electrode wear rates decreased and increased, respectively, when the reinforcement contents of the composites increased. However, powder-mixed electric discharge machining enhanced the machining stability, and a comparatively higher workpiece removal rate was observed with a decreased electrode wear rate. On the other hand, by increasing the discharge current, which was also verified as the most effective machining parameter in variance analysis, both workpiece removal rate and electrode wear rate values increased in both machining techniques. The experimentally calculated volumetric workpiece material removed by a discharge pulse was compared to that of a model in the literature, and they were also found to be consistent with each other.


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Aksöz, S., Özdemir, A.T., Çalın, R., Altınok, Z., Bostan, B. (2014). Effects of sintering, aging and cryogenic treatments on structural and mechanical properties of AA2014-B4C composite. Journal of the Faculty of Engineering and Architecture of Gazi University 28 (4), 831-839.

Bodukuri, A.K., Eswaraiah, K., Rajendar, K., Sampath, V. (2016). Fabrication of Al-SiC-B4C metal matrix composite by powder metallurgy technique and evaluating mechanical properties. Perspect. Sci. 8, 428-431.

Çelik, Y.H., Seçilmiş, K. (2017). Investigation of Wear Behaviours of Al matrix composites reinforced with different B4C rate produced by powder metallurgy method. Adv. Powder Technol. 28 (9), 2218-2224.

Dhar, S., Purohit, R., Saini, N., Sharma, A., Kumar, G.H. (2007). Mathematical Modeling of Electric Discharge Machining of Cast Al-4Cu-6Si Alloy-10 Wt.% SiCP Composites. J. Mater. Process. Technol. 194 (1.3), 24-29.

Dubey, V., Singh, B. (2018). Study of Material Removal Rate in Powder Mixed EDM of AA7075/B4C Composite. Mater. Today: Proc. 5 (2), 7466-7475.

Gopalakannan, S., Senthilvelan, T., Ranganathan, S. (2013). Statistical Optimization of EDM Parameters on Machining of Aluminum Hybrid Metal Matrix Composite by Applying Taguchi Based Grey Analysis. JSIR 72, 358-365.

Hocheng, H., Lei, W.T., Hsu, H.S. (1997). Preliminary Study of Material Removal in Electrical-Discharge Machining of SiC/Al. J. Mater. Process. Technol. 63 (1-3), 813-818.

Ikai, T., Hashiguchi, K. (1995). Heat Input for Crater Formation in EDM. In 11th International Symposium for Electromachining. ISEM 11, 163-170. Lausanne, Switzerland, Lausanne; Switzerland: Les Presses Polytechniques Romandes;

Kandpal, B.C., Kumar, J., Singh, H. (2018). Optimization of Electrical Discharge Machining AA6061/ 10 %Al2O3 Composite Using Taguchi Optimization Technique. Mater. Today: Proc. 5 (9), 18946-18955.

Kar, C., Surekha, B., Jena, H., Choudhury, S.D. (2018). Study of Influence of Process Parameters in Electric Discharge Machining of Aluminum - Red Mud Metal Matrix Composite. Procedia Manuf. 20, 392-399.

Kathiresan, M., Sornakumar, T. (2010). EDM Studies on Aluminum Alloy-Silicon Carbide Composites Developed by Vortex Technique and Pressure Die Casting. JMMCE 9 (1), 79-88.

Kumar, S., Uthayakumar, M., Kumaran, S.T., Parameswaran, P., Mohandas, E. (2014). Electrical Discharge Machining of Al (6351)-5% SiC-10% B4C Hybrid Composite: A Grey Relational Approach. Edited by Azah Mohamed. Model. Simul. Eng. ID 426718.

Manish, S., Dhakad, S.K. (2018). Optimisation of Electrical Discharge Machining of Al-LM-6/ SiC/ B4C Composite: A Grey Relational Approach. Mater. Today: Proc. 5 (9), 19147-19155.

Müller, F., Monaghan, J. (2000). Non-Conventional Machining of Particle Reinforced Metal Matrix Composite. Int. J. Mach. Tools Manuf. 40 (9), 1351-1366.

Naik, S., Das, S.R., Dhupal, D. (2020). Analysis, predictive modelling and multi-response optimization in electrical discharge machining of Al-22% SiC metal matrix composite for minimization of surface roughness and hole overcut. Manuf. Rev. 7, #20.

Naik, S., Das, S.R., Dhupal, D., Khatua, A.K. (2022). Electrical discharge machining of engineered Al-22% SiC metal matrix composite: surface roughness analysis, optimization, economic analysis, and sustainability assessment. Process. Integr. Optim. Sustain. 6 (2), 223-251.

Prabu, M., Ramadoss, G., Narendersingh, P., Christy, T.V., Eswaran, V.V. (2013). Electrical Discharge Machining of Al-TiB2 with a Low-Frequency Vibrating Tool. Sci. Eng. Compos. Mater. 21 (3), 445-452.

Prasanna, P., Sashank Tallapragada, V.S.S.P., Manikanta, B., Aluri, P. (2017). Optimizing the process parameters of electrical discharge machining on AA7075 - SiC Alloys. Mater. Today: Proc. 4(8), 8517-8527.

Pul, M. (2010). Production of MgO Reinforced Al Matrix Composites by Vacuum Infiltration Method and Evaluation of Its Machinability. Gazi University, Ankara.

Radhika, N., Sudhamshu, A.R., Chandran, G.K. (2014). Optimization of Electrical Discharge Machining Parameters of Aluminium Hybrid Composites Using Taguchi Method. J. Eng. Sci. Technol. 9 (4), 502-512.

Ravi, B., Naik, B.B., Prakash, J.U. (2015). Characterization of Aluminium Matrix Composites (AA6061/B4C) Fabricated by Stir Casting Technique. Mater. Today: Proc. 2 (4), 2984-2990.

Sarikavak, Y., Cogun, C. (2012). Single discharge thermo-electrical modeling of micromachining mechanism in electric discharge machining. J. Mech. Sci. Technol. 26 (5), 1591-1597.

Senthil, P., Vinodh, S., Singh, A.K. (2014). Parametric optimisation of EDM on Al-Cu/TiB2 in-Situ metal matrix composites using TOPSIS method. IJMMM 16 (1), 80-94.

Sidhu, S.S., Batish, A., Kumar, S. (2014). Study of Surface Properties in Particulate-Reinforced Metal Matrix Composites (MMCs) Using Powder-Mixed Electrical Discharge Machining (EDM). Mater. Manuf. Process. 29 (1), 46-52.

Singh, P.N., Raghukandan, K., Rathinasabapathi, M., Pai, B.C. (2004). Electric Discharge Machining of Al-10%SiCP as-Cast Metal Matrix Composites. J. Mater. Process. Technol. 155-156, 1653-1657.

Yantao, Y., Chen, L. (2014). Processing of B4C Particulate-Reinforced Magnesium-Matrix Composites by Metal-Assisted Melt Infiltration Technique. J. Mater. Sci. Technol. 30 (7), 661-665.



How to Cite

Farid Ahmadinia, O. ., Küçüktürk, G. ., Sucularlı, F. ., & Gürün, H. . (2022). Machinability of B4C-reinforced Al2014 metal matrix composites in electric discharge machining. Revista De Metalurgia, 58(4), e228.