Optimization of wire-EDM process parameters on Mg-Al2o3-B4c

The Magnesium (Mg) based metal matrix composites (MMC) are fabricated using many techniques like powder metallurgy, stir casting, squeeze casting, etc., to improve the mechanical, physical and chemical properties of magnesium MMC. This research is mainly intended towards fabrication and characterization of the hybrid metal matrix composite (MMC) of Magnesium using powder metallurgy technique. Magnesium is a widely used metal especially in the field of automotive industries as it is got some unique features like low density, corrosion resistance and good strength to weight ratio. The hybrid composite is fabricated by reinforcing pure magnesium (Mg) with alumina (Al2O3) and boron carbide (B4C) particles of different proposition (5%, 10%, and 15%) using powder metallurgy technique. The machining control parameters (cutting speed, feed rate and depth of cut) are designed using design of experiments (DOE). The constructed MMC is machined in a WEDM machine in accordance with the design to acquire output responses like MRR and surface roughness. The input control parameters, such as pulse on time, pulse off time, voltage, and current, are to be optimized using Surface Response Methodology (RSM) to get high MRR and LOW surface roughness. The confirmation experiment is then conducted to confirm the results.