Abstract
The hot working characteristics of as-cast Mg-3Sn-1Ca alloy have been studied using processing-map technique and the kinetic rate equation. The map exhibited two domains; one in the lower strain rate range (0.0003-0.01 s- 1) and the other in the higher strain rate range (0.1-10 s- 1)-both falling in the same temperature range of 350-550 s- 1. Hot extrusion at 500 °C and a speed corresponding to an average strain rate of 3 s- 1 exhibited dynamically recrystallized microstructure. The estimated apparent activation energy values are higher than those for self-diffusion in pure magnesium suggesting that the large volume fraction of MgSnCa intermetallic particles causes significant back stress.
| Original language | English |
|---|---|
| Journal | Materials Letters |
| Volume | 62 |
| Issue number | 26 |
| Pages (from-to) | 4207-4209 |
| Number of pages | 3 |
| ISSN | 0167-577X |
| DOIs | |
| Publication status | Published - 15.10.2008 |
| Externally published | Yes |
Research areas and keywords
- Dynamic recrystallization
- Hot working
- Kinetics
- Magnesium alloys
- Processing map
- Engineering
ASJC Scopus Subject Areas
- Mechanical Engineering
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
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