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

W. W. Sun; H. Fang; N. H. van Dijk; S. van der Zwaag; C. R. Hutchinson

doi:10.1007/s11661-017-4025-x

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

W. W. Sun, H. Fang, N. H. van Dijk, S. van der Zwaag, C. R. Hutchinson^*

^*Corresponding author for this work

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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.

Original language	English
Pages (from-to)	2109–2114
Number of pages	6
Journal	Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
Volume	48
Issue number	5
DOIs	https://doi.org/10.1007/s11661-017-4025-x
Publication status	Published - 27 Feb 2017

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art%3A10.1007%2Fs11661-017-4025-xFinal published version, 1.07 MBLicence: CC BY-NC-ND

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AU - Fang, H.

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AU - van der Zwaag, S.

AU - Hutchinson, C. R.

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

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