Why does pitting preferentially occur on shear bands in bulk metallic glasses?

The effect of shear bands on pitting corrosion of a pre-deformed Zr-based bulk metallic glass was studied through immersion test in 1 M HCl solution. It was found that pitting always preferentially occurred at the offsets of the shear bands, but this selective corrosion behavior disappeared when the shear offsets were polished, although shear bands did exist at the same locations. This demonstrates that the shear offsets, rather than the structural changes in the shear bands, is the dominant factor for the pitting initiation.