  New approaches for the design of alloy systems with multiprincipal elements
is recently researched in refractory materials field. However, most research
aimed at arc melting process with weakness of coarsening of grains and
inhomogeneous microstructure of segregation of elements during the cooling.
This study aims to design and fabricate high-entropy alloy with powder
metallurgy. In this study, a refractory high entropy alloys with composition
near AlMo0.5NbTa0.5TiZr were produced by powder metallurgy. The alloy consists
of two body-centered cubic (BCC) phases. One phase was disordered BCC enriched
with Mo, Nb and Ta and the other phase was ordered BCC enriched with Al and Zr.
The AlMo0.5NbTa0.5TiZr alloy had a density of 7.46g/cm3 and Vickers
microhardness of 678HV. Its compressive yield strength was 2466MPa at 298K and
964MPa at 1273K. The properties of the alloy and the beneficial effects from
powder metallurgy on the microstructure and properties were outlined.
