Hexagonal High-Entropy Alloys
Michael Feuerbacher, Markus Heidelmann, and Carsten Thomas
TL;DR
This paper reports the discovery of a new hexagonal high-entropy alloy in the Ho-Dy-Y-Gd-Tb system, characterized by electron microscopy, expanding the known structures of high-entropy alloys.
Contribution
It presents the first known high-entropy alloy with a hexagonal crystal structure, demonstrating the potential for new alloy systems.
Findings
Homogeneous single-phase hexagonal structure identified
Electron diffraction confirms Mg-type hexagonal structure
Potential for hexagonal high-entropy alloys in other systems
Abstract
We report on the discovery of a high-entropy alloy with a hexagonal crystal structure. Equiatomic samples in the alloy system Ho-Dy-Y-Gd-Tb were found to solidify as homogeneous single-phase high-entropy alloys. The results of our electron diffraction investigations and high-resolution scanning transmission electron microscopy are consistent with a Mg-type hexagonal structure. The possibility of hexagonal high-entropy alloys in other alloy systems is discussed.
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