Shear band healing in amorphous materials by small-amplitude oscillatory shear deformation

The effect of small-amplitude periodic shear on annealing a band in binary glasses is investigated using molecular dynamics simulations. first introduced stable via large-amplitude shear, and then amorphous samples are subjected to repeated loading during thousands cycles at strain amplitudes below the yield strain. It was found that with increasing amplitude, relocated deeper potential energy levels, while change upon not affected by glass initial stability. results mechanical tests indicate modulus stress both increase towards plateau levels few hundred cycles, their magnitudes largest when loaded close analysis nonaffine displacements reveals breaks up into isolated clusters gradually decay over time, leading nearly reversible deformation within elastic range. These might be useful for processing metallic additive manufacturing.