Abstract
Duplex phase Al0.25FeMnNiCrCu0.5 high entropy alloy (HEA) was fabricated successfully from elemental powder blends through a Laser Melting Deposition (LMD) process. The structural characteristics and tensile properties of the alloy have been studied by XRD, optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), and tensile test. The alloy consists of (FCC1 + FCC2 + BCC) phases with lattice parameters of 3.62 Å, 3.58 Å and 2.85 Å, respectively. The yield strength, tensile strength and elongation of LAM Al0.25FeMnNiCrCu0.5 at room temperature are 636 MPa, 1052 MPa and 24.5%, respectively. The LMD Al0.25FeMnNiCrCu0.5 alloy presents an outstanding combination of high tensile strength and good ductility.
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