Plastic Properties of a Metallic Iron Glass Model under Uniaxial Tension

Resumo

The nucleation and propagation of a shear band in a metallic iron glass model under uniaxial tension were studied by analyzing the quadratic nonaffine displacements of atoms. The evolution of its atomic structure was performed using statistical geometric analysis based on the construction of Voronoy polyhedra. A model was proposed based on notions about the formation of an elastic stress field equivalent to the field of a dislocation located in the area of a minimum gradient in the concentration of local shear-induced transformation centers for the nucleation and motion of a shear band.