Microstructural Evolution and Control in Hot Forging of AZ31 Magnesium Alloy: Validation of Materials Models
DescriptionMicrostructural control during hot working is critical to achieving adequate and reproducible mechanical properties in the components. Materials modeling techniques like processing maps and kinetic analysis provide the basis for predicting the microstructural development during hot working. These models have been recently developed by PI for hot working of AZ31, which is the most popular wrought magnesium alloy. The processing maps revealed that in addition to the availability of two workability domains, there is a change-over region (called bifurcation in dynamical systems terminology) where microstructural control is difficult. In the workability domains, however, a deterministic relation exists between grain size and processing parameters. In this project, the above results from the materials models will be validated on a laboratory scale hot forging of an AZ31 component in combination with finite element simulations. A processing schedule will be developed for microstructural control that ensures product quality and reproducibility.
|Effective start/end date||1/04/09 → 14/11/11|