Abstract
A commercial software MARC is used to simulate direct-reverse superplastic bulging process of 7475 alloy deep box part with groove shape. Thickness distribution under different process conditions is analyzed. The results show the following conclusions. The direct-reverse superplastic bulging process is an effectual approach to control thickness distribution of parts. Through optimizing the curve of pressure-time and the shape of reverse bulging die, thickness distribution of the part is apparently improved and the design requirement of the part is satisfied. The whole process of the part's direct-reverse superplastic bulging is shown by post treatment. It provides a logical scheme for actual forming. The strain rate of each forming stage is controlled in the range of 7475 alloy's strain rate. This shows the design of pressure-time curve is reasonable.
| Original language | English |
|---|---|
| Pages (from-to) | 279-282 |
| Number of pages | 4 |
| Journal | Cailiao Kexue yu Gongyi/Material Science and Technology |
| Volume | 12 |
| Issue number | 3 |
| State | Published - Jun 2004 |
| Externally published | Yes |
Keywords
- Direct-reverse bulging process
- Finite element simulation
- Strain rate
- Superplasticity
- Thickness distribution
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