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Lee, Sukbin
Multidimensional Structural Materials Lab
Research Interests
  • Microstructural evolution, advanced characterization, computational materials science, 3D materials science, microstructure-property relation

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Deriving grain boundary character distributions and relative grain boundary energies from three-dimensional EBSD data

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Title
Deriving grain boundary character distributions and relative grain boundary energies from three-dimensional EBSD data
Author
Rohrer, G. S.Li, J.Lee, SukbinRollett, A. D.Groeber, M.Uchic, M. D.
Keywords
EBSD;  Grain boundaries;  Grain boundary energy;  Serial sectioning;  Superalloy;  Three-dimensional microstructure
Issue Date
2010-06
Publisher
MANEY PUBLISHING
Citation
MATERIALS SCIENCE AND TECHNOLOGY, v.26, no.6, pp.661 - 669
Abstract
Three-dimensional electron backscatter diffraction data, obtained by serial sectioning a nickel-base superalloy, has been analysed to measure the geometric arrangement of grain boundary planes at triple junctions. This information has been used to calculate the grain boundary character distribution (GBCD) and the grain boundary energy distribution (GBED). The twin content from the three-dimensional GBCD calculation compares favourably with the twin content estimated by stereology. Important factors in the analysis are the alignment of the parallel layers, the ratio of the out-of-plane to in-plane spacing of the discrete orientation data and the discretisation of the domain of grain boundary types. The results show that grain boundaries comprised of (111) planes occur most frequently and that these grain boundaries have a relatively low energy. The GBCD and GBED are inversely correlated.
URI
https://scholarworks.unist.ac.kr/handle/201301/7881
DOI
10.1179/026708309X12468927349370
ISSN
0267-0836
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