Campus Units

Materials Science and Engineering, Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

4-30-2019

Journal or Book Title

Scientific Reports

Volume

9

Issue

1

First Page

6692

DOI

10.1038/s41598-019-43079-9

Abstract

Using an effective genetic algorithm, we uncover the structure of a metastable Al41Sm5 phase that supplements its family sharing similar short-range orders. The phase evolves upon heating an amorphous Al-9.7 at.% Sm ribbon, produced by melt-spinning. The dynamical phase selection is discussed with respect to the structural connections between the short-range packing motifs in the amorphous precursor and those observed in the selected phases. The phase elucidated here is one of several newly discovered large-unit-cell phases found to form during devitrification from the glass in this binary system, further illustrating the power and efficiency of our approach, the important role of structural hierarchy in phase selection, and the richness of the metastable phase landscape accessible from the glassy structure.

Comments

This article is published as Ye, Z., F. Meng, F. Zhang, Y. Sun, L. Yang, S. H. Zhou, R. E. Napolitano, M. I. Mendelev, R. T. Ott, M. J. Kramer, C. Z. Wang, and K. M. Ho. "Observation of η-Al 41 Sm 5 reveals motif-aware structural evolution in Al-Sm alloys." Scientific Reports 9, (2019): 6692. DOI: 10.1038/s41598-019-43079-9. Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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