3D reconstruction of prior β grains in friction stir–processed Ti–6Al–4V

Summary The prior β grain structure and orientations in the central stir zone of friction stir–processed Ti–6Al–4V were reconstructed from measured α phase orientations obtained by three‐dimensional serial sectioning in a dual‐beam focused ion beam scanning electron microscope. The data were process...

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Bibliographic Details
Published in:Journal of microscopy (Oxford) 2014-08, Vol.255 (2), p.71-77
Main Authors: TILEY, J.S., SHIVELEY, A.R., PILCHAK, A.L., SHADE, P.A., GROEBER, M.A.
Format: Article
Language:English
Subjects:
3D reconstruction
EBSD characterization
Friction
Grain structure
Grains
Orientation
Scanning electron microscopy
Serials
Three dimensional
titanium alloys
Titanium base alloys
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Summary:Summary The prior β grain structure and orientations in the central stir zone of friction stir–processed Ti–6Al–4V were reconstructed from measured α phase orientations obtained by three‐dimensional serial sectioning in a dual‐beam focused ion beam scanning electron microscope. The data were processed to obtain the α colony and β grain size distributions in the volume. Several β grains were individually analysed to determine the total number of unique α variants and the respective volume fractions of each. The analysis revealed that some grains experienced overwhelming variant selection (i.e. one variant dominated) whereas other β grains contained a more evenly distributed mixture of all 12 variants.
ISSN:0022-2720
1365-2818
DOI:10.1111/jmi.12137