On the basis of the rigid visco-plastic FEM technique,the numerical simulation of the cavity-damage evoluation process during superplastic bulging process was carried out using the model of cavity-damage evolution deduced from continuous damage mechanics.

In order to shorten forming time and to achieve uniform thickness of parts in superplastic bulging of void-sensitive materials, it is well known that maximum effective strain rate should be kept within a very small range.

Therefore, there will be more practical significance on its practical application to the expansion of the scope of a more complex shape of magnesium alloy parts, whether or not it has superplasticity study under certain conditions using superplastic bulging forming.

Combination of differential temperature drawing and superplastic bulging;

However, up to now, the theoreticalanalysis for the superplastic constrained bulging has only a few research reports.

Research on Design and Implement of a Pressure-Time Curve Controlled Superplastic Bulging System;

Effect of holding time on high temperature microstructures of hydrogenation TC4 alloy before superplastic deformation;

This paper studied the superplastic deformation behavior of enhanced titanium-base composite material in-si- tu autogenesis TiB and TiC under conditions of temperature varied in the range of 920～1080℃ and initial strain rate was 2× 10~(-2)s~(-1)～10~(-4)s~(-1).

Optical microscope and scanning electronic microscope ( SEM) were employed to observe the microstructure evolution and fracture behavior in superplastic deformation of AZ31 Mg alloy and the values of deformation activation energy at various.