Mechanism of grain refinement of Mg-Al alloys by SiC inoculation
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Authors
The mechanism of grain refinement was investigated for Mg-Al alloys inoculated with SiC particles. Contrary to the previously reported Al 4C3 hypothesis, the ternary carbide Al2MgC 2 was observed, which has a crystal structure closer to that of Mg than to that of Al4C3. In the centre of the grains, one or more "hillocks" enriched in Al and C were observed. Based on the observed phenomena, a novel mechanism is suggested to explain the grain refinement of Mg-Al alloys with the addition of SiC particles.
| Original language | English |
|---|---|
| Journal | Scripta Materialia |
| Volume | 64 |
| Issue number | 8 |
| Pages (from-to) | 793-796 |
| Number of pages | 4 |
| ISSN | 1359-6462 |
| DOIs | |
| Publication status | Published - 04.2011 |
| Externally published | Yes |
- AlMgC, Carbon inoculation, Grain refining, Magnesium alloys, Solidification
- Engineering