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Welly,
The
main Grain Size measurement in Materials-Pro is a whole-image measurement. The
grain size is arrived at by calculating the average intercept length, which is
calculated by the total length of the intercept lines divided by the number of
intercepts. Since the intercept lines cross the grains at different
cross-sections, the individual intercept lengths are not meaningful for
determining individual grain sizes.
There
is an additional function that will calculate the grain size of individual
grains, Measure ALA Grain Size. This will give you the statistics that you
want, but this function requires that you have very good grain
boundaries.
Hope
this helps,
John A. Schmitz
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