Numerical Study of the Kinetic Aspects of Fracture of Metal Nanocrystals

Resumo

This paper deals with the investigation of the temperature effect on the fracture of a metal nanostructure during constant-rate uniaxial deformation. The temperature varied within the range from 0 to 550 K, and the velocity of the movable grip varied from 50 to 500 m/s. It has been demonstrated that the temperature significantly affects both the macrocharacteristics of fracture (fracture site, the number of structural fragments, grip stresses) and the kinetic characteristics (time to maximum grip stresses, fracture time, mass transfer, and necking).