Linking stress-driven microstructural evolution in nanocrystalline aluminium with grain boundary doping of oxygen

Mo-Rigen He; Saritha K. Samudrala; Gyuseok Kim; Peter J. Felfer; Andrew J. Breen; Julie M. Cairney; Daniel S. Gianola

doi:10.1038/ncomms11225

Nature Communications (Apr 2016)

Linking stress-driven microstructural evolution in nanocrystalline aluminium with grain boundary doping of oxygen

Mo-Rigen He,
Saritha K. Samudrala,
Gyuseok Kim,
Peter J. Felfer,
Andrew J. Breen,
Julie M. Cairney,
Daniel S. Gianola

Affiliations

Mo-Rigen He: Department of Materials Science and Engineering, University of Pennsylvania
Saritha K. Samudrala: Australian Centre for Microscopy and Microanalysis, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney
Gyuseok Kim: Department of Materials Science and Engineering, University of Pennsylvania
Peter J. Felfer: Australian Centre for Microscopy and Microanalysis, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney
Andrew J. Breen: Australian Centre for Microscopy and Microanalysis, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney
Julie M. Cairney: Australian Centre for Microscopy and Microanalysis, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney
Daniel S. Gianola: Department of Materials Science and Engineering, University of Pennsylvania

DOI: https://doi.org/10.1038/ncomms11225
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 9

Abstract

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Nanocrystalline metals are ultra-strong because of the large fraction of material at the grain boundaries, but this also leads to instability under applied loads. Here, the authors deepen our understanding of this by linking stress-driven motion of grain boundaries to grain boundary chemistry.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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