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

Journal article (2017)

Authors

W. W. Sun Monash University
H. Fang Novel Aerospace Materials - Aerospace Engineering
N.H. van Dijk RST/Fundamental Aspects of Materials and Energy - AS
S. van der Zwaag Novel Aerospace Materials - Aerospace Engineering
Christopher R. Hutchinson Monash University
Research Group
Novel Aerospace Materials (Aerospace Engineering) (TU Delft)
Copyright: © 2017 W. W. Sun, H. Fang, N.H. van Dijk, S. van der Zwaag, C. R. Hutchinson
DOI
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https://doi.org/10.1007/s11661-017-4025-x
More Info
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Published Date

27-02-2017

Language

English

Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Novel Aerospace Materials

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.