Abstract
As-cast microstructures of the sand-casting magnesium alloys ZA53 (Mg-5%Zn-3%Al-0.2%Mn) contain δ-Mg and τ(Mg32(Al, Zn)49) phases. By adding trace elements Sr, Ti and B into the melt of the ZA53 alloys, the primary grain of 6-Mg was refined, meanwhile the morphology of T phase was changed from semi-netted shape to short rods or spheres, and the distribution of T phase tended to be more homogeneous. In the case of additions of 0.06%Ti, 0.012%B, and 0.1%Sr, δ-Mg grain was greatly refined and the best mechanical properties were got.
| Original language | English |
|---|---|
| Pages (from-to) | 230-234 |
| Number of pages | 5 |
| Journal | Zhuzao/Foundry |
| Volume | 55 |
| Issue number | 3 |
| State | Published - Mar 2006 |
Keywords
- Casting magnesium alloy
- Microstructures
- Refinement
- Room temperature mechanical properties