Prediction of metal fracture in the processes of cold plastic working report 2. consideration of the anisotropic hardening and the experimental verification of the model of plastic strain and fracture

摘要

Based on the experimental investigation into the Bauschinger effect for induced preliminary strains of steels, the generalization of the model for plastic strain is made in case of anisotropic hardening.Within the framework of the model it is shown that for large deformations the Bauschinger effect has a dislocation nature.The results of the experimental verification of the semiphenological model developed for a single process of plastic deformation and fracture of metals under conditions of cold strain. The model is shown to make a prediction, which fits the experimentaldata adequately, of the probability of metal fracture due to the exhaustion of the available plasticity in the processes of plastic deformation occurring under conditions of both simple and complex loadings.