MOBFE: TCS Steel and Fe- Mobility Database Revision History

Current Database Version

Database name (acronym):

TCS Steels/Fe-Alloys Mobility Database (MOBFE)

Database owner:

Thermo‑Calc Software AB

Database version:

8.1

First release:

MOBFE1 was released in 2009

Changes in the Most Recent Database Release

Software release version: 2025a (January 2025)

  • Reassessment of BCC_A2 Fe-Mn-Si system

Previous Releases

Software release version: 2023b (June 2023)

  • The mobility parameters for N in FCC_A1 Ni, Fe-Ni, Fe-Cr and Cr-Ni are assessed.

  • Added mobility of C and Fe in CEMENTITE and M5C2 phases.

  • New updated mobility for Fe-X:

    • FCC_A1 : Fe-Co, Fe-Ni, Fe-V, and Fe-Zn

    • BCC_A2: Fe-Cu, Fe-Si, Fe-Ti, Fe-V, and Fe-Zn

    • CEMENTITE_D011: Fe-C

    • M5C2: Fe-C

  • New updated mobility for Fe-X-Y:

    • FCC_A1 : Fe-Co-Ni, Fe-Co-Cu, Fe-Cu-Ni, Fe-Ni-Ti, Fe-Ni-V, Fe-Co-Cr, Fe-Ni-N, and Fe-Cr-N

    • BCC_A2: Fe-Al-Mn, Fe-Al-Ni, Fe-Al-Ti, Fe-Al-V, Fe-Cr-Mo, Fe-Cr-V, and Fe-Mn-Si

Software release version: 2022a (December 2021/January 2022)

  • Addition of Sn in BCC, FCC, and liquid phases.

Software release version: 2021a (December 2020/January 2021)

Addition of Hydrogen (H) to the database with the following assessed systems:

  • FCC_A1: Al-H, Co-H, Cu-H, Fe-H, H-Ni, Fe-H-Ni, Cr-Fe-H, Co-H-Ni
  • BCC_A2: Cr-H, Fe-H, Mo-H, Nb-H, Ti-H, Ta-H, V-H, Fe-H-Si, Cr-Fe-H, H-Mo-Ti, H-Nb-V, H-Ti-V
  • HCP_A3: Al-H, Co-H, Ti-H
  • LIQUID: Al-H, Cu-H, Fe-H, Mg-H, H-Ni, H-Si, Co-Fe-H, Cr-Fe-H, Cu-Fe-H, Fe-H-Mn, Fe-H-Mo, Fe-H-Ni, Fe-H-Nb, Fe-H-V, Fe-H-W

Software release version: 2020a (January 2020)

  • Added new element Ru and mobility of Ru.
  • Added mobility of C and W in FCC-Co.
  • Revised default composition sets (type_defs).
  • Updated the reference states of elements according to PURE5.

Software release version: 2017a (March 2017)

Ce has been added in MOBFE4. The self-diffusion and impurity diffusion data related to Ce were included in the BCC_A2, FCC_A1, HCP_A3 and LIQUID phases. Mobility data for several Mn containing binary and ternary systems was also added. Diffusion data for the LIQUID phase has also been assessed for systems where experimental data is available; otherwise the modified Sutherland equation was used for estimation. Therefore, the description of the LIQUID phase has been entirely updated in this version of the database, from a constant value (1ยท10-9 [m/s2]) to temperature dependent ones. In addition to pure element data, complete and critical assessments for the LIQUID phase in 11 binary systems are implemented.

Software release version: 2015a (June 2015)

The change from MOBFE2 to MOBFE3 is the addition of atomic mobilities of Y and Zn in bcc, fcc and liquid Fe.