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HomeMaterials Science ForumMaterials Science Forum Vol. 925Crystallography of Growth Blocks in Spheroidal...

Crystallography of Growth Blocks in Spheroidal Graphite

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Abstract:

A better understanding of spheroidal graphite growth is expected in a near future thanks to widespread use of transmission electron microscopy. However, common transmission electron microscopy is quite time consuming and new indexing techniques are being developed, among them is transmission Kikuchi diffraction in a scanning electron microscope, a recent technique derived from electron backscatter diffraction. In the present work, on-axis transmission Kikuchi diffraction in scanning electron microscope, completed by transmission electron microscopy, was used with the objective of producing new observations on the microstructure of spheroidal graphite. This study shows that disorientations between blocks and sectors in spheroidal graphite are quite large in the early growth stage, which may be indicative of a competition process selecting the best orientations for achieving radial growth along the c direction of graphite.

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Science and Processing of Cast Iron XI

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Periodical:

Materials Science Forum (Volume 925)

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54-61

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.925.54

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Online since:

June 2018

Authors:

Etienne Brodu, Emmanuel Bouzy, Jean Jacques Fundenberger, Benoit Beausir, Lydia Laffont, Jacques Lacaze*

Keywords:

Cast Iron, Crystallinity, Spheroidal Graphite, Transmission Electron Microscopy, Transmission Kikuchi Diffraction (TKD)

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