The present study deals with the optimization of parameters to check the effectiveness of thermoelectric machining of aluminum based SiC reinforced composites. Here, hybrid ED machining of Al-SiC metal matrix composites (MMCs) is investigated in magnetic field incorporated conventional Electrical Discharge Machining (EDM). The input processing parameters, such as pulse-on/off duration, current were assessed to analyze their outcome on the response parameters in terms of material erosion rate (MER), microhardness (MH), surface roughness (SR) and recast layer formation. The experimental results witnessed decrease in microhardness values and reduced thickness of recast layer, accompanied by a significant effect on MER and surface finish while machining in the magnetic field coupled higher spark energy. The experimental results conferred the process stability and an excellent correspondence with experimental verifications. Keywords Silicon carbide · Metal matrix composites · Non-conventional machining · Magnetic field · MER · MH Abbreviations MFAPMEDM Magnetic field assisted powder mixed p-value Probability EDM Adj MS Adjusted mean square dB decibels J (vector quantity) Current density MER Material Erosion Rate Al-SiC Aluminum-Silicon Carbide MH(HV) Microhardness (Vickers Pyramid Number) Adj SS Adjusted sums of squares MMC Metal Matrix Composite EDM Electrical Discharge Machining 1 Introduction RC RECAST B(T) Magnetic Field (Tesla)
Silicon – Springer Journals
Published: Jun 4, 2018
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