Molar Volume and Related Examples

The TCS Al-based Alloy Database (TCAL) contains a molar volume and thermal expansion coefficients of all phases starting with version 2 (TCAL2).

The database can be used for:

  • Calculating the molar volume (and thus the density) of the (Al) solid solution (Figure 1).
  • Predicting the casting shrinkage of aluminum alloys (Figure 2).
  • Calculating the thermal expansion (Figure 3)

Al-X (X=Li, Mg, Si, Zn) Molar Volumes

Calculated molar volumes of the Al-X (X=Li, Mg, Si, Zn) fcc_A1 phase.

Figure 1: Calculated molar volumes of the Al-X (X=Li, Mg, Si, Zn) fcc_A1 phase.

Al and Al-Si Alloy Densities

Calculated densities of pure Al and Al-Si alloys versus the temperature, in comparison with experimental data from Magnusson and Arnberg [2001]

Figure 2: Calculated densities of pure Al and Al-Si alloys versus the temperature, in comparison with experimental data from [2001Mag].

Al-Sc, Al-Ti, and Al-Zr Thermal Expansivity

Calculated volume thermal expansivity for Al3Sc, Al3Ti and Al3Zr.

Figure 3: Calculated volume thermal expansivity for Al3Sc, Al3Ti, and Al3Zr [2017Che].

References

[2001Mag] T. Magnusson, L. Arnberg, Density and solidification shrinkage of hypoeutectic aluminum-silicon alloys. Metall. Mater. Trans. A. 32, 2605–2613 (2001).

[2017Che] H.-L. Chen, Thermodynamic modeling of phase equilibria and molar volume in the Sc-Ti, Al-Sc-Si, Al-Sc-Ti, Al-Sc-Zr and Al-Si-Ti systems (Stockholm, Sweden, 2017), unpublished work.