| Abstract Scope |
High strength and good ductility combination makes it appealing for advanced structural and functional applications. FCC, BCC, and B2 phases are commonly found in high-entropy alloys (HEAs), which are the subject of extensive research to tweak their mechanical properties. In this study, Al15Cu20Fe25Ni30Ti10 low-density, dual-phase high entropy alloy (LDDP-HEA) was designed by phase formation rules, and heat-treated at 800, 900, and 1000 ℃ for 24 h, followed by water quenching. The microstructural and mechanical properties were investigated by combining FESEM, EBSD, EDS, XRD, microhardness, and compression tests. The LDDP-HEA exhibited an excellent combination of yield strength of ~1675 MPa, ultimate compressive strength of ~2250 MPa, and elongation of ~10 % in the as-cast condition. The strength and low density of the alloy lead to superior specific compressive yield strength of 240 MPa g-1 cm3 and 121.70 MPa g-1 cm3 in as-cast and at 1000 ℃, respectively. |