Thermophysical Property Database

The thermophysical property database PanNb2024_TP is compatible with the PanNb2024_TH thermodynamic database and suitable for the simulation of thermophysical properties of Nb-based alloys. It includes the molar volume data for all the phases, surface tension and viscosity properties for the liquid phase.

Molar Volume

The current molar volume database covers all 192 phases assessed in the PanNb2024_TH database. It is used to calculate the density, thermal expansion, solidification shrinkage of Nb alloys.

The simulated density changes vs. temperature of a series of Nb-based alloys are shown below to validate the current PanNb2024_MV database.

Figure 1: Molar volume of Nb-Ti Bcc binary alloys at 298K [2016Yan]

[2016Yan] J.-Y. Yan and G.B. Olson, Molar volumes of bcc, hcp, and orthorhombic Ti-base solid solutions at room temperature. Calphad, 2016. 52: p. 152-158.