Strain-induced fully coherent triphase nanoarchitecture in refractory high-entropy alloys.

Authors

Yu Zhang, Zhiqiao Li, Jin Xie, Xiaojun Zhao, Houwen Chen, Yunzhi Wang, Jian-Feng Nie

Published in

Science (New York, N.Y.). Volume 392. Issue 6804. Pages 1308-1312. Jun 18, 2026. Epub Jun 18, 2026.

Abstract

Nanostructured materials have exceptional properties, yet scalable fabrication of bulk, three-dimensional, nanograined structures remains a formidable challenge. We report the self-assembly of a fully coherent, triphase nanostructure-resembling a mesocrystal-formed through solid-state phase separation in an equiatomic refractory alloy. The resulting architecture integrates three common metallic crystal structures-face-centered cubic, body-centered cubic, and hexagonal close-packed-interwoven through strain-induced phase separation and unconventional transformation pathways triggered by the separation itself. This nanostructure accommodates large atomic-size mismatches and lattice misfits while maintaining full coherency and thermal stability. The resulting material exhibits a compressive yield strength exceeding 2 gigapascals. These findings provide a method for nanostructure engineering in compositionally complex alloys through strain-induced transformation pathway engineering.

PMID:
42313972
Bibliographic data and abstract were imported from PubMed on 19 Jun 2026.

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