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Schematic sample geometry (the dimensions are not in scale).
SEM images of the IMC crystals observed from the etched surfaces of the samples stored at for (a) , corner zone, (b) , edge zone, (c) , central zone, and (d) , central zone.
Plot of averaging size of the IMC crystals, , vs storage time, : (a) the mean curves of the corner, edge and center zones for all the four storage temperatures and (b) the separate curves of the corner, edge, and central zones for the storage temperatures of .
The contours of Nb concentration in the dimensionless form of on the and planes simulated for the times of (a), (b) and (c), (d) .
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