Development of Mathematical Models of Superplasticity Properties as a Function of Parameters of Aluminum Alloys of Al-Mg-Si System

摘要

The article discusses the superplasticity properties and structure parameters of cold-worked alloys of a quasi-binary section of the Al-Mg-Si system with a volume fraction of eutectic particles of 0.08-0.18. Mathematical models of yield stress and effective elongation as a function of the structure and engineering parameters have been developed for alloys of this system. An analysis of the developed models shows that, in the temperature range of 520-560, superplastic deformation is controlled by the rate of diffusion of aluminum atoms in the grain bulk.