The influence of Aluminum on the iron-carbon system
Legend (Phases):
- Liquid
- Liquid-Graphite
- Liquid-FCC_A1
- Graphite-FCC_A1
- FCC_A1
- BCC_A2-FCC_A1
- FCC_A1-BCC_A2-Graphite
- BCC_A2-Graphite
- Liquid-BCC_A2
- Liquid-BCC_A2-FCC_A1
- Liquid-FCC_A1-Graphite
- FCC_A1-Graphite-Kappa
- BCC_A2-FCC_A1-Kappa
- FCC_A1-Kappa
- BCC_A2-Kappa
- Liquid-Graphite-Kappa
- Liquid-FCC_A1-Kappa
- Liquid-Kappa
Ideas
- The austenitic region is less when the aluminum content grows up.
- The mixed between FCC-BCC phase is directly proportional to the aluminum content.
- There are not carbides precipitation.
- There is graphite phase because There is Cementite descomposition.
- The aluminum content does not have a big effect in the peritectic point.
Profile Critical Points
The next table and graphic show the temperature and composition variation with Aluminum content in the system.
| Al(%wt) | Peritectic | Eutectic | ||
| C (%wt) | T (°C) | C (%wt) | T (°C) | |
| 0.5 | 0.358 | 1466 | 4.347 | 1193 |
| 1 | 0.367 | 1468 | 4.323 | 1217 |
| 1.5 | 0.375 | 1469 | 4.286 | 1235 |
| 2.5 | 0.389 | 1470 | 4.195 | 1261 |
| 3 | 0.3969 | 1469 | 4.145 | 1261 |
| 3.5 | 0.404 | 1468 | 4.092 | 1278 |
| 4 | 0.41 | 1466 | 4.039 | 1285 |
| 5 | 0.423 | 1461 | 3.93 | 1296 |
Critical Points
