Abstract
The microstructure and mechanical properties of extruded Mg94Ni3Y1.5CeMM1.5 alloy were evaluated between 250 and 400 °C. The alloy exhibited superplasticity between 300 and 400 °C. Superplastic deformation was characterized by the refinement of coarse second-phase particles and their continuous redistribution in the magnesium matrix. The equiaxed structure of the magnesium matrix in the deformed samples as well as the stress exponent close to 2 indicated that grain boundary sliding was the mechanism controlling the superplastic deformation.
| Original language | English |
|---|---|
| Pages (from-to) | 33-36 |
| Journal | Scripta Materialia |
| Volume | 64 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2011 |
Keywords
- Magnesium alloys
- Deformation microstructure
- Mechanical properties
- Superplasticity
- Particle refinement