Abstract
The current work focuses on the synthesis of near equi-atomic Fe-Ni-Co-Al-Ti high entropy alloy manufactured by powder metallurgy technique. Elemental powders have been blended by the use of ball milling in Ar gas atmosphere, compaction was performed at room temperature at 600 MPa using a rectangular cross-section die, and the sintering was then performed by the use of pressureless vacuum sintering furnace. Taguchi experimental design (L9 design of three factors at three levels) and results analysis has been used to establish the experimental regime in which the effect of Ti concentration (10, 15 and 20 wt.%), grapheme composition in the composite (0, 0.1 and 0.2 wt.%), and sintering temperature (750, 775 and 800 °C). The alloy and composite have shown relatively high porosity level and the metallurgical investigation has revealed the proper choice of synthesis conditions and their effects on the properties of the materials
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