Numerical Simulation and Experiment of Cavity Growth DuringSuperplastic Bulging of Magnesium Alloy ZK60

摘要

In this paper, numerical simulation and experimental studies on cavity growth were carried out during thebulging process of superplastic magnesium Alloy. A three-dimensional rigid-viscoplastic finite elementprogram has been developed and applied to predict the cavity radiusand volume fraction of cavity growth.The final prediction on the cavity radius and volume fraction distribution was exhibited as colorful shadepictures. The experimental studies wereperformed under similar conditions to the numerical one andprovided for quantitativecomparison. According to the metallography observation, the radius and volumefraction of cavity growth was quantitative achieved by using Profound-Iron&steel software. Thenumerical results were in reasonable quantitative agreement with the experiment.