Effect of Aluminum Content on the Properties of Spark Plasma Sintered Tungsten, Niobium, Vanadium, Molybdenum & Aluminum Refractory High Entropy Alloys

Four samples with 6 hours MA durations were prepared with the Al concentrations of 0.25, 0.5, 0.75 and 1 for spark plasma sintering. XRD analysis for both pre-sintered and sintered samples showed single BCC phase. Equiaxed grain morphology and homogenous distribution of the elements were detected by SEM/EDS investigations. Highest hardness value was acquired as 1.5 GPa from Al 0.5 M sample.