A short review on high strain rate superplasticity in magnesium-based composites materials

Abstract

Magnesium composites are next-generation lightweight materials for aerospace and military industries. However, the complex shape components of magnesium composites cannot be designed at ambient temperature, therefore, they need to be processed at elevated temperatures. Generally, material at elevated temperatures displays superplasticity. It is more interesting that magnesium composites exhibite high strain rate superplasticity compared to aluminum alloys. Therefore, this review article sheds light on the superplastic deformation behavior of magnesium composites fabricated by different routes. Further, the stress-energy, cavitation nucleation and its impact on the elongation to fracture have been explored. At the end of the review article, some terrifying unresolved subjects have been addressed, so that their potential use can be enhanced as complex shape components.

Keywords

• Mg composites
• Thermomechanical processing
• HSRS
• Cavitation
• Elongation to fracture