◆V. Morpho logy 1. Band structure 2. Orange peal structure due to the diferent in account of deformation between grain center and grain boundary 3. Fibre structure(mechanical texture In plastic deformation, both the grains and the impurities or second phases may be elongated along the principal direction of flow, forming fibre structure◆ Ⅴ.Morphology 1. Band structure. 2. Orange peal structure due to the different in account of deformation between grain center and grain boundary. 3. Fibre structure (mechanical texture). In plastic deformation, both the grains and the impurities or second phases may be elongated along the principal direction of flow, forming fibre structure