Abstract
Equi-atomic AgCuCoNiFe high entropy alloy was synthesized via mechanical alloying and the milled powder sample was annealed at 770 °C for 60 min in an argon atmosphere. A solid solution of AgCuCoNiFe having two FCC phases was obtained after alloying. Broadening in X-ray diffraction (XRD) peaks was observed with progression of milling time indicating the formation of a solid solution. XRD graph of the annealed sample showed the re-emergence of FCC-Cu peaks thereby implying the decomposition of the HEA. High resolution transmission electron microscopy (HRTEM) showed as-milled crystallites having lattice fringes from 0.286 nm to 0.32 nm and possessing a ring diffraction pattern indexed to FCC phases. Its annealed counterpart had lattice fringes of 0.24 nm with crystalline dot diffraction pattern indexed to FCC phase.
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