Lattice rotation during severe local shear in a fully hardened Al–4%Cu–0.1%Fe single crystal alloy

Electron backscatter diffraction revealed that the shear bands developed in fully hardened Al–4%Cu–0.1%Fe single crystals are formed by dense arrays of low angle boundaries (<3°), parallel to the band, originated by local lattice rotations due to slip on the conjugate system. When traversing the band, the tensile axis swings repeatedly at discrete steps.