Comparing with empirical regression analysis and artificial neural networks, the CALPHAD approach offers a unique and remarkable advantage in accurately obtaining all critical features at the same time for a wide spectrum of conventional Ti-alloys.
Examples of calculation results for conventional Ti-alloys:
Knowledge of the above information through computational thermodynamics provides us a better, cheaper and faster way to tailor materials chemistry, optimise heat treatment schedules and enable quality assurance.
For γ-TiAl-based alloys, users frequently calculate:
Due to the fact that the approach is based on thermodynamics, various important thermodynamic properties can also be readily calculated and utilised in kinetic simulations of phase transformation and microstructural evolution, such as:
By using the Diffusion module (DICTRA) and combining both thermodynamic and kinetic databases, typical diffusion-controlled phase transformations in Ti-alloys can be simulated under arbitrary heat treatment conditions. Some examples of applications are: