TCS High Entropy Alloys Database (TCHEA) Resources

Information about the database is available on our website and in the Thermo‑Calc software online Help.

  • Website: On our website the information is both searchable and the database specific PDFs are available to download.
  • Online Help: Technical database information is included with the Thermo‑Calc software online Help. When in Thermo‑Calc, press F1 to search for the same information as is contained in the PDF documents described. Depending on the database, there are additional examples available on the website.
  • The TCS High Entropy Alloys Database (TCHEA) Technical Information PDF document contains version specific information such as the binary and ternary assessed systems, phases and models. It also includes details about the thermophysical and elastic properties data (e.g. viscosity, surface tension, etc.), a list of the included elements, and summaries of the database revision history by version.
  • The TCS High Entropy Alloys Database (TCHEA) Validation and Calculation Examples Collection PDF document contains a series of validation examples using experimental data, and a set of calculation examples showing some of the ways the database can be used.

Go to the High Entropy Alloys Databases page on our website where you can access a Validation and Calculation Examples Collection and the Technical Information plus learn more about the compatible kinetic database. Also explore further applications of Thermo‑Calc to high entropy alloys and the Refractory Alloys Solutions page on our website, that includes links to resources such as examples, publications, and more.

The Thermo‑Calc databases are developed with the CALPHAD approach based on various types of experimental data and theoretical values (e.g. those from first-principles calculations). It is based on the critical evaluation of all the binary systems and many ternary systems. A hybrid approach of experiments, first-principal calculations and CALPHAD modeling has been used to obtain reliable thermodynamic descriptions of the BCC, FCC and HCP solutions. That enables predictions to be made for multicomponent alloy systems, especially for HEAs.

The extrapolation to higher-order systems helps to understand the phase equilibria in HEAs, so as to predict the phase formation, phase fractions and phase compositions or to calculate the driving force of forming a phase. All necessary molar volume data and thermal expansion data are assessed or estimated for most of the phases.

The CALPHAD Method and the Thermo‑Calc Databases. Also visit the video tutorials on our website or our YouTube playlist.