MOBAL: TCS Aluminum Mobility Database Revision History

Current Database Version

Database name (acronym):

TCS Al-alloys Mobility Database (MOBAL)

Database owner:

Thermo‑Calc Software AB

Database version:

8.0

First release:

MOBAL1 was released in 2010

MOBAL1 continues to be compatible with the TT Al-based Alloys Database (TTAL8). However, all other subsequent versions of this database (i.e. MOBAL2 and newer) are intended for use with the TCS Al‑based Alloy Database (TCAL) database.

Changes in the Most Recent Database Release

Software release 2024a (December 2023/January 2024)

  • New Elements: Ba, Sb, Ta, and W
  • Assessments for FCC_A1 Phase
    • New assessments for Ag-Cu, Ag-Zn, Al-Li, Al-Ag-Cu, Al-Ag-Zn, Al-Cu-Sn
    • Improved for Al-Si
    • Added mobility of impurity diffusivity for Al-Ba, Al-Sb, Al-Ta, and Al-W
  • Assessments for Liquid Phase
    • Mobility parameters for self- and impurity- diffusivity of the systems not previously included in MOBAL version 7 and earlier are estimated using the Modified Sutherland equation.

Previous Releases

Software release 2022a (December 2021/January 2022)

  • Addition of five elements Nd, Pr, S, Se, and Te in the FCC and liquid phases.
  • The atomic mobility data of Hf in the fcc phase was updated.
  • A typo error that leads to wrong interaction between Si and Sn in the fcc phase was corrected.

Software release 2021a (December 2020/January 2021).

  • Three elements added to the database: Nb, P, and Y.

Software release 2019a (December 2018).

  • Added Mo and Al-Mo.
  • FCC_A1 is now independently modeled and no longer coupled with FCC_L12. The FCC_L12 phase modeled with the partitioning model is now separated and named as ORD_L12.

Software release version: 2018a (April 2018)

The main changes to the TCS Aluminum-alloys Mobility Database (MOBAL4) compared with MOBAL3 are that it:

  • Contains a new element Er
  • Has an improved description of liquid
  • Has many updated and new binaries and now includes ternary and quaternary descriptions:
    • 3 phases
    • 37 binary systems
    • 20 ternary systems
    • 2 quaternary systems

Software release version: 3.1 (December 2013)

  • Mobility data for the new elements Be, Bi, Cd, Ce, Co, Ga, In and Pb in TCAL2 have been added for FCC_A1 and LIQUID phases.
  • The mobility data for the interstitial elements B, C and H in the ordered phase FCC_L12 are now accessible thanks to the modified treatment of interstitials in ordered phases in DICTRA.
  • The description of diffusion in the LIQUID phase has been greatly improved.