Wielewski, E. , Menasche, D. B., Callahan, P. G. and Suter, R. (2015) 3-D α colony characterisation and prior-β grain reconstruction of a lamellar Ti-6Al-4V specimen using near-field high energy x-ray diffraction microscopy. Journal of Applied Crystallography, 48(4), pp. 1165-1171. (doi: 10.1107/S1600576715011139)
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Abstract
Near-field high energy X-ray diffraction microscopy (nf-HEDM) has been used to characterize the 3-D crystallographic orientation field of the hexagonal close-packed (hcp) α phase in a bulk Ti-6Al-4V specimen with a lamellar (β-annealed) microstructure. These data have been segmented using a 3-D misorientation-based grain finding algorithm, providing unprecedented information about the complex 3-D morphologies and spatial misorientation distributions of the transformed α lamellae colonies. A 3-D Burgers orientation relationship-based flood fill algorithm has been implemented to reconstruct the morphologies and crystallographic orientations of the high temperature body centred cubic (bcc) prior-β grains. The combination of these data has been used to gain understanding of the role of the prior-β grain structure on the formation of specific morphologies and spatial misorientation distributions observed in the transformed α colony structures. It is hoped that this understanding can be used to develop transformation structures optimized for specific applications and to produce more physically realistic synthetic microstructures for use in simulations.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Wielewski, Dr Euan |
Authors: | Wielewski, E., Menasche, D. B., Callahan, P. G., and Suter, R. |
College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
Journal Name: | Journal of Applied Crystallography |
Publisher: | International Union of Crystallography |
ISSN: | 0021-8898 |
ISSN (Online): | 1600-5767 |
Copyright Holders: | Copyright © 2015 International Union of Crystallography |
First Published: | First published in Journal of Applied Crystallography 48(4):1165-1171 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher. |
Data DOI: | 10.5525/gla.researchdata.163 |
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