MOBTI: TCS Titanium Mobility Database Revision History

Current Database Version

Database name (acronym):

TCS Ti-alloys Mobility Database (MOBTI)

Database owner:

Thermo‑Calc Software AB

Database version:

5.0

First release:

MOBTI1 was released in 2013

MOBTI versions 2 and higher are for use with the Thermo‑Calc thermodynamic TCTI database. MOBTI1 is for use with the ThermoTech TTTI3 database.

Changes in the Most Recent Database Release

Software release version: 2024b (June 2024)

  • New compound phase ALTI3_D019 is added, the corresponding mobility data for H, O, Al, Ni, Nb, and Ti elements are assessed, and the mobility data for other elements are estimated.

  • Four updated phases: BCC_A2, HCP_A3, LIQUID, and ALTI_L10.
  • The description of diffusion in the LIQUID phase is greatly improved.
  • Mobility data for the O element in the compound phase ALTI_L10 are added.
  • BCC_A2
    • Binary: Al-Nb, Al-Ni, Al-Sn, Cr-Mn, Cr-Nb, Fe-V, Mo-Nb, Nb-Ta, Nb-V, Nb-W, Ti-Mn, Ti-Pd, Ti-W, Zr-Hf, Zr-Nb, and Zr-Ta.
    • Ternary: Al-Mo-Ti, Ti-Al-Zr, Ti-Al-Nb, Ti-Al-Sn, Ti-Cr-Mn, Ti-Nb-Ta, Ti-Nb-Zr, Ti-Al-Ni, Ti-Cr-V, Ti-Mo-Nb, Ti-Fe-V, Ti-Fe-Nb, Ti-Cr-Zr, Ti-Cr-Nb, Ti-Nb-V, and Zr-Ta-Nb.
    • Quaternary: Ti-Nb-Zr-Hf, Ti-Nb-Zr-Ta, Ti-Nb-Zr-Cr, TI-Nb-Zr-Sn, and Ti-Nb-Zr-W.
  • HCP_A3
    • One binary system (Cu-Ti) for HCP_A3 phase is newly assessed.

Previous Releases

Software release 2023a (December 2022/January 2023)

  • Modified the impurity diffusivity parameter of nitrogen in HCP_A3 titanium.

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

The element Copper (Cu) is added in the Bcc_A2, Hcp_A3, and liquid phases.

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

The diffusivity of O in Bcc_A2 Ti is corrected.

Software release version: 2019a (January 2019)

  • 4 new elements added: Ag, H, Pd, Pt
  • 7 new binary systems added: Ag-Ti, Al-H, H-Ti, H-V, H-Nb, H-Mo, Pd-Ti
  • 4 new ternary systems added: H-Mo-Ti, H-Ti-V, H-Nb-V, H-Al-Ti

Software release version: 2017a (June 2017)

The following is what is included with MOBTI2.

  • 23 elements Al, B, C, Co, Cr, Fe. Hf, Mn, Mo, N, Nb, Ni, O, Re, Ru, Si, Sn, Ta, Ti, V, W, Y, Zr.
  • 4 phases: BCC_A2, HCP_A3, ALTI_L10, LIQUID.
  • 20 assessed binary systems.
  • 7 assessed ternary systems.