TCFE14 Elements, Systems, and Phases
This section summarizes the available elements, assessed systems, and total number of phases in the TCS Steel and Fe-alloys Database (TCFE).
Included Elements
There are 30 elements included in the most recent version of the database.
| Included Elements | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ar | Al | B | C | Ca | Ce | Co | Cr | Cu | Fe |
| H | Mg | Mn | Mo | N | Nb | Ni | O | P | Ru |
| S | Si | Sn | Ta | Ti | V | W | Y | Zn | Zr |
Assessed Systems
Also see information about TCFE14 Composition Limits
The database is developed on the basis of complete assessments of binary, ternary, and some higher order systems. However, many intermediate compounds that usually do not occur in steels/Fe-alloys are ignored in the database. Therefore, the database may not be suitable to calculate complete binary and ternary systems, but only rather in the Fe-rich corner.
Sometimes, for some special steels/Fe-alloys, you may prefer to append some other stoichiometric or solution phases (usually intermediate compound phases that have been ignored in the TCFE Database) from another compatible database (e.g. SSOL: SGTE Solutions Database and/or SSUB: SGTE Substances Database). But you must be careful about appropriately appending such data in the combination.
The most recent version of the database contains the following:
- 371 assessed binary systems
- 335 assessed ternary systems
- 84 assessed quaternary systems
Included Phases
Common Phases for Steel and Fe-alloys and TCFE14 Models for the Included Phases
The TCS Steel and Fe-alloys Database (TCFE) includes 465 phases. It contains an extensive GAS mixture phase for the main purpose of considering oxygen/nitrogen-gas controls in steel-making processes, and different gas atmospheres under e.g. heat treatments.
When it is really necessary to consider a more comprehensive ionic liquid phase for calculations of e.g. formations of complex oxides on steel surfaces or investigating various steelmaking metallurgical processes, an IONIC_LIQ solution phase can be appended from the TCS Metal Oxide Solutions Database (TCOX).
In Console Mode, you can list phases and constituents in the Database (TDB) module and the Gibbs (GES) module. For some phases, supplementary information is included in the definitions. To show the information, it is recommended in the Database (TDB) module to use the command List_System with the option Constituents.