Modelling Heterogeneous Microstructures, Inhomogeneous Deformation and Failure in Superplasticity

摘要

A material model is presented for superplastic deformation, at the continuum level, that is coupled with the inhomogeneous micro structural evolution that occurs through normal grain growth and deformation enhanced growth. The model has been developed to enable finite element analyses at the process level, in which the evolution of experimentally observed distributions of grain size can be predicted, together with localisation and failure.