A single-phase bcc high-entropy alloy in the refractory Zr-Nb-Ti-V-Hf system

TL;DR

This paper reports the creation and detailed characterization of a single-phase, bcc high-entropy alloy in the refractory Zr-Nb-Ti-V-Hf system, demonstrating successful synthesis of a homogeneous, chemically disordered solid solution.

Contribution

It introduces a new refractory high-entropy alloy with a bcc structure, produced via arc and levitation melting, and thoroughly characterized for the first time.

Findings

Achieved a homogeneous, single-phase bcc high-entropy alloy

Demonstrated a chemically disordered solid solution with a specific lattice parameter

Produced alloy with uniform elemental distribution

Abstract

We report on the production and characterization of a high-entropy alloy in the refractory Zr-Nb-Ti-V-Hf system. Equiatomic ingots were produced by arc and levitation melting, and were subsequently homogenized by high-temperature annealing. We obtained a coarse-grained, single-phase high-entropy alloy, with a homogeneous distribution of the constituting elements. The phase is a chemically disordered solid solution, based on a bcc lattice with a lattice parameter of 0.336(5) nm.