The high-temperature tensile deformation behaviors of the recrystallization annealed Al7(CoNiV)93 medium entropy alloy with a duplex hierarchical microstructure face-centered cubic (fcc) and ordered body-centered L21 Heusler-type grains were investigated. showed remarkably high strength ∼1.1 GPa good ductility ∼17% at 923 K due to strain hardening capacity 60 MPa. At 1073 K, highest fracture el...