Two dual phase steels with markedly different microstructural banding have been serial sectioned for characterisation and quantification of the banding in three dimension (3D). Two parameters, bounded on a scale of zero to one, have been defined to quantify the amount of microstructural banding in two dimension (2D). The band continuity index Cb quantifies the continuity of each band within the band. The perpendicular continuity index Cp describes the continuity between adjacent bands. In the present work, these parameters are extended and applied to full 3D bands. The results show that while the connectivity of bands in 3D is different than what is observed in 2D, the quantification of banding with these parameters in 2D is sufficient to accurately represent the banding in 3D, thus validating these newly defined parameters.
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