Effect of Crystal Orientation and Crystallographic Anisotropy on Shear Band Formation During Ductile Fracture in Fe Single Crystals

Abstract

Shear bands are very common microstructural features in metals undergoing high plastic deformation. In processes like cold rolling, shear banding plays an essential role in obtaining the desired crystallographic texture. However, the exact deformation mechanism of shear bands is yet to be fully understood. This work explores the modeling of shear band formation and the effect of orientation of the crystal, prior to the deformation, through single crystal simulations. The effect of crystal orientation and crystallographic anisotropy on shear band formation is studied using a gradient damage model coupled with plasticity and crystallographic information. It is observed that the orientation affects shear band thickness and the strain at which shear bands are formed. © 2023, The Minerals, Metals & Materials Society and ASM International.