The Local Rearrangement of Tension Deformation in AlSi Amorphous Alloy: A Molecular Dynamics Study

Al100−xSix (x = 2, 4, 6, 8, 10) amorphous alloy models are constructed by using molecular dynamics (MD) simulations. In order to investigate the local rearrangement during the tension deformation, Honeycutt-Andersen (HA) method and Voronoi tessellation method are performed for the initial state, The HA method and the atomic local shear strain are used for the deformed states of the models. The structure of AlSi alloys is mainly amorphous structure. It is found that the Si element enhanced glass-forming ability. Moreover, the amorphous structure breaks and transforms into other tiny complex structure during the tension deformation. In addition, it is observed that the amorphous regions which preferentially undergo atomic rearrangement in the elastic stage and early plastic stage.