Linear Expansion and Density
The TCS Ti/TiAl-based Alloys Database (TCTI) contains all necessary volume data (including molar volume and thermal expansion) for most phases of importance to titanium alloys. This enables you to calculate properties related to molar volume, including volume fraction of phases, density, and thermal expansivity, as well as lattice parameters for cubic structures.
Volume related properties, such as density and thermal expansion, are normally required as input for process simulations. A major achievement of the TCS Ti/TiAl-based Alloys Database (TCTI) is that such data can be readily calculated for different alloys from room temperature into the liquid state, which is of vital importance for process (e.g. casting, welding, etc.) simulations but difficult to measure or otherwise estimate.
Ti-6Al-4V Linear Expansion Rate
Figure 1: Linear expansion rate for Ti-6Al-4V. In this plot a good prediction can be made even in the region close to the β-transus where the amounts of α and β change rapidly with temperature..
Ti-Al-Nb Density of Liquid
Density is a fundamental material property. It is crucial for casting processes and to determine surface tension and viscosity from the measured raw data.
Figure 2: Density of liquid Ti-Al-Nb compared to experimental data.
Ti-45.5Al-8Nb Density
The composition of Ti-45.5Al-8Nb is of high interest for investigations of TiAl-based alloys. This plot shows a comparison between calculated density and experimental data from room temperature to 1200 °C. With the assessed volume data in TCTI, it is possible to make accurate predictions on density covering a wide temperature range.
Figure 3: Calculated density of Ti-45.5Al-8Nb in a wide temperature range.