Experimental Study on Machinability of Metal Matrix Composite by Abrasive Water Jets

Abstract

The unconventional machining of ceramic reinforced metal matrix composites is innovative. The machinability of aluminium alloy and boron carbide metal matrix composite with the abrasive water jets is discussed here. Two discrete proportions of Al-B4C metal matrix composites were prepared with different mesh size, transverse rate, flow rate of abrasives and water pressure so as to distinguish the effectiveness of the AWJ machine for possible handling of metal matrix composites with abrasive water jets (AWJs). The penetration capability of abrasive water jets in various cases of metal matrix composites (MMCs) was experimented in trapezoidal-shaped aluminium boron metal matrix composite specimens which are prepared by stir casting method. Optical micrographs of metal matrix composite tests and scanning electron microscopic (SEM) examination of abrasive water jet cut surfaces empower to clarify the trends of material evacuation by the abrasives. Examination of results distinctly demonstrated the decision of abrasives of mesh size 80 with high water pressure and stream rate and low transverse rate results in effective processing of Al-B4C MMCs with AWJs.