The Activation Energy for Plastic Flow in Spatially Extended Polycrystalline Systems during Tension Test

摘要

The target of this work is to obtain the activation energy for plastic flow in spatially extended polycrystalline systems during tension test with constant crosshead velocity. For the reason that, during a tension test at constant crosshead velocity in spatially extended polycrystalline systems, the strain rate is reduced period-by-period and these thermo mechanical conditions could change the amplitude of vibration of the atoms and their frequency due to the amount of vibration energy absorbed and related with the variety of disorders occurring during such irreversible deformation process. In this framework, the activation energy for plastic flow in spatially extended polycrystalline systems is obtained by applying the theoretical mathematical model of quantum mechanics and relativistic cosmic micromechanics connection proposed by Muñoz-Andrade.