Abstract:Superplasticity is characterized by the very large elongations at break and the relatively low strain rates in the forming process. Superplastic forming is mostly used to produce the aluminum alloys parts in aeronautics and astronautics fields, and this process is usually carried out under an elevated temperature with a forming gas pressure. To reach the best forming effect, the optimization of superplastic forming is necessary. This paper introduces the superplasticity and its forming processes firstly. And then the paper presents the strategies for the optimization of superplastic forming which are proposed with the numerical simulation and verified by the experiments. These optimizations are divided into two types: monoparameter optimization and multiparameter optimization. The related optimization strategies are given in these two types, and the strategies of the pressure control, the control space search and the optimization of thickness are addressed. The research objectives in the future are given at the conclusion.