MOBCU5: TCS Cu-based Alloys Mobility Database

TCS Cu-based Alloys Mobility Database (MOBCU) is a kinetic database containing mobility data for Cu-based alloys. Data is present in a format suitable for simulation of diffusion controlled phenomena using the add-on Diffusion Module (DICTRA) and/or Precipitation Module (TC-PRISMA), and/or for use together with any Thermo‑Calc programming interface.

MOBCU5 is intended for use in combination with the TCCU6 (TCS Cu-based Alloys) thermodynamic database.

Together with the Diffusion Module (DICTRA) and a thermodynamic database for Cu-alloys (e.g. TCCU) use the MOBCU5 database to study diffusion-controlled phenomena in copper alloys, e.g. microsegregation during solidification, homogenization kinetics, growth/dissolution kinetics of precipitates, interdiffusion, and so forth. You can also use it with the Precipitation Module (TC-PRISMA) to simulate concurrent nucleation, growth, and coarsening of precipitates in Cu-based alloys.

MOBCU: TCS Copper Mobility Database Revision History. The current version of the database is MOBCU5. See the link for any subversion release details.

Included Elements

There are 32 elements included in the most recent version of the database.

Ag	Al	Au	As	B	Be	Bi	C	Ca	Cd
Ce	Co	Cr	Cu	Fe	Ge	La	Mg	Mn	Mo
Nb	Ni	O	P	Pb	Pt	Se	Si	Sn	Ti
Zn	Zr

Included Phases

This database has FCC_A1 and LIQUID phases.

The phases have diffusion data included in the database. You can include other phases in a diffusion simulation. However, these other phases are treated as so-called diffusion NONE, i.e. there is no diffusion considered in these other phases. Any phase not listed above is automatically entered as diffusion NONE (in Console Mode in the DICTRA module or in Graphical Mode with the Diffusion Module (DICTRA) and/or Precipitation Module (TC-PRISMA)), as long as a thermodynamic description for the phases is retrieved prior to reading data from the mobility database.

Assessed Systems

FCC_A1

The database contains assessed impurity diffusion data in Cu for all 31 alloying elements. Included are the complete and critical assessments for FCC_A1 in 40 binary systems, 32 ternary systems, and 3 quaternary systems.

Binary

FCC_A1 Binary Assessed Systems
Ag-Al	Ag-Au	Ag-Cu	Ag-Sn	Al-Cr	Al-Cu	Al-Fe	Al-Mg
Al-Mn	Al-Ni	Al-Pt	Al-Si	Al-Ti	Al-Zn	Au-Cu	Be-Cu
Co-Cu	Co-Fe	Co-Mn	Co-Ni	Co-Pt	Cr-Fe	Cr-Ni	Cu-Fe
Cu-Mg	Cu-Mn	Cu-Ni	Cu-Si	Cu-Sn	Cu-Ti	Cu-Zn	Fe-Mn
Fe-Ni	Mn-Ni	Mn-Zn	Mo-Ni	Ni-Pt	Ni-Si	Ni-Ti	Ni-Zn

Ternary

FCC_A1 Ternary Assessed Systems
Ag-Al-Cu	Ag-Au-Cu	Al-Cr-Ni	Al-Cu-Fe	Al-Cu-Mg	Al-Cu-Mn	Al-Cu-Ni	Al-Cu-Si
Al-Cu-Sn	Al-Cu-Zn	Al-Mn-Ni	Al-Ni-Pt	Al-Ni-Ti	C-Cr-Fe	C-Cr-Ni	C-Fe-Ni
Co-Cu-Mn	Co-Cu-Ni	Co-Fe-Ni	Cr-Cu-Ni	Cr-Fe-Ni	Cu-Fe-Mn	Cu-Fe-Ni	Cu-Mn-Ni
Cu-Mn-Si	Cu-Mn-Zn	Cu-Mo-Ni	Cu-Ni-Si	Cu-Ni-Sn	Cu-Ni-Ti	Cu-Ni-Zn	Cu-Sn-Zn

Quaternary

FCC_A1 Quaternary Assessed Systems
Cu-Al-Ni-Sn
Cu-Mn-Ni-Zn
Cu-Ni-Al-Zn

LIQUID

Data for diffusion in LIQUID Cu alloys are also assessed or estimated for all elements in the database. Complete and critical assessments of 15 binary systems for the LIQUID phase are included.

Binary

LIQUID Binary Assessed Systems
Ag-Cu	Ag-Sn	Al-Ce	Al-Cu	Al-Mg	Al-Ni	Al-Si	Al-Zn
Ce-Cu	Cu-Sn	Fe-Mn	Fe-Si	Ni-P	Ni-Si	Pb-Sn

Limits

The database is applicable for most commercial Cu-based alloys; care should be taken with alloys including high amounts of alloying elements.

As in the spirit of the CALPHAD method, predictions can be made for multicomponent systems by extrapolation into multicomponent space of data critically evaluated and assessed based on binary, ternary and in some cases higher order systems. However, critical calculations must always be verified by equilibrium experimental data; it is the user's responsibility to verify the calculations but Thermo‑Calc Software AB is interested to know about any significant deviations in order to improve any future release.

The CALPHAD Method

The Thermo‑Calc databases are developed with the CALPHAD approach based on various types of experimental data and theoretical values (e.g. those from first-principles calculations). It is based on the critical evaluation of binary, ternary, and for some databases, important higher order systems. This enables predictions to be made for multicomponent systems and alloys of industrial importance. Among these, the thermodynamic database is of fundamental importance.

The CALPHAD Method and the Thermo‑Calc Databases. Also visit the video tutorials on our website or our YouTube playlist.

Additional Resources

Go to the Copper-based Alloys Databases page on our website where you can access this Technical Information plus learn more about the compatible thermodynamic database and its Validation and Calculation Examples Collection. Also explore further applications of Thermo‑Calc to Copper including links to resources such as examples, publications, and more.