Observations of grain boundary impurities in nanocrystalline Al and their influence on micro structural stability and mechanical behaviour

Journal article

The exceptional properties of nanocrystalline materials lend themselves to a wide range of structural and functional applications. There is recent evidence to suggest that grain boundary impurities may have a dramatic effect on the stability, strength and ductility of nanocrystalline metals and alloys. In this study, transmission electron microscopy and atom probe tomography were used to characterize specimens deposited at different base pressures, thus providing a direct comparison of impuri...

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Authors: Tang, F; Gianola, D; Moody, M; Hemker, K; Cairney, J

• Publication status: Published
• Journal: ACTA MATERIALIA
• Volume: 60
• Issue: 3
• Pages: 1038-1047
• Publication date: 2012-02-01
• DOI: 10.1016/j.actamat.2011.10.061
• ISSN: 1359-6454
• Language: English
• Keywords: Deformation; Atom probe tomography; Aluminium; Nanocrystalline; Impurity segregation