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Letter | Open Access

Orientation dependence of extremely high strength in Mg-Li-Zn single crystals

Koji Hagiharaa,b( ), Shuhei Ohsawaa, Toko Tokunagaa, Muhammadsanim Tsunekawaa
Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokisocho, Showa-ku, Nagoya, Aichi 466-8555, Japan
Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

Peer review under the responsibility of Chongqing University.

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Abstract

An extremely high yield stress of approximately 430 MPa was obtained in a single crystal of an Mg-Li-Zn alloy with a body-centered cubic (bcc) structure, accompanied by the inhomogeneous distribution of Zn in bcc-matrix phase. This significantly exceeds the yield stress of approximately 50 MPa for binary Mg-Li single crystals. This significant strengthening was similar to that measured in the Al-added alloy, but a stronger orientation dependence of the yield stress was observed in the Zn-added alloy. However, this extremely high strength gradually decreased when the alloy was left at room temperature. This suggests that the microstructure formed by spinodal decomposition has low thermal stability.

Keywords

Mg-alloysStrengtheningDislocationSingle crystalOrientation dependence

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Journal of Magnesium and Alloys
Volume 15 Issue C,
February 2026
DOI: 10.1016/j.jma.2025.11.012

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Cite this article:
Hagihara K, Ohsawa S, Tokunaga T, et al. Orientation dependence of extremely high strength in Mg-Li-Zn single crystals. Journal of Magnesium and Alloys, 2026, 15(C). https://doi.org/10.1016/j.jma.2025.11.012

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Received: 21 July 2025
Revised: 17 October 2025
Accepted: 09 November 2025
Published: 11 December 2025
© 2025 Chongqing University.

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)