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Linking Surface Precipitation in Fe-Au Alloys to Its Self-healing Potential During Creep Loading

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Abstract

The precipitation of Au-rich precipitates on the external surfaces of Fe-Au alloys has been studied by scanning and transmission electron microscopy. The surface precipitates formed at elevated temperatures are found to self-organize in regular patterns and their growth rate is determined quantitatively. The observed surface precipitation at a free surface is compared to the precipitation at the internal surface of grain boundary cavities induced by creep loading. A close agreement between both processes is observed.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Monash University, Clayton, 3800, VIC, Australia

    W. W. Sun & C. R. Hutchinson

  2. Fundamental Aspects of Materials and Energy Group, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB, Delft, The Netherlands

    H. Fang & N. H. van Dijk

  3. Novel Aerospace Materials Group, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands

    H. Fang & S. van der Zwaag

Authors
  1. W. W. Sun
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  2. H. Fang
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  3. N. H. van Dijk
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  4. S. van der Zwaag
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  5. C. R. Hutchinson
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Corresponding author

Correspondence to C. R. Hutchinson.

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Manuscript submitted December 7, 2016.

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Sun, W.W., Fang, H., van Dijk, N.H. et al. Linking Surface Precipitation in Fe-Au Alloys to Its Self-healing Potential During Creep Loading. Metall Mater Trans A 48, 2109–2114 (2017). https://doi.org/10.1007/s11661-017-4025-x

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  • DOI: https://doi.org/10.1007/s11661-017-4025-x

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