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Journal of Materials Science
Erschienen in: Journal of Materials Science 9/2016

27.01.2016 | Original Paper

Crystallographic orientation relationships and interfaces in laser-processed directionally solidified WC–W2C eutectoid ceramics

verfasst von: Wei-Ting Chen, Elizabeth C. Dickey

Erschienen in: Journal of Materials Science | Ausgabe 9/2016

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Abstract

Crystallographic orientation relationships and interfaces in directionally solidified WC–W2C eutectoids are investigated by electron microscopy and electron back-scattered diffraction. The WC–W2C eutectoids are prepared by a laser surface processing method, which unidirectionally melts and resolidifies ceramic powder substrates. Lamellar-type microstructures are observed in all samples with preferred nominal growth directions of [\( \overline{1} 2\overline{1} 0 \)]WC//[\( \overline{1} 2\overline{1} 0 \)]W2C along the solidification direction. The majority of interface habit planes are found to be (0001)WC//(0001)W2C. The interfaces are found to be semicoherent, with a misfit Burger’s vector of 1/3[\( 2{\bar{1}} {\bar{1}} 0 \)]. An intermediate layer is identified at the interface and is associated with a change in the stacking sequence of the close-packed (0001) tungsten planes.
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Metadaten
Titel
Crystallographic orientation relationships and interfaces in laser-processed directionally solidified WC–W2C eutectoid ceramics
verfasst von
Wei-Ting Chen
Elizabeth C. Dickey
Publikationsdatum
27.01.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 9/2016
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-9749-2

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