How to extract enthalpy of formation of 2nd phase in a binary alloy system using ThermoCalc?

09 October 2022 1 9K Report

I need to get the values of enthalpy of formation of intermetallic compounds such as Al3Zr, Al3Sc etc in Al-Zr,Al-Sc alloys using thermocalc.

Yassine El Khessaimi

To extract the enthalpy of formation of the second phase in a binary alloy system using ThermoCalc, you will need to perform a thermodynamic calculation using the appropriate database and inputs. Below is a general outline of the steps involved in this process:

Install and launch ThermoCalc on your computer.

Select the appropriate database for the binary alloy system you are studying. This database should contain thermodynamic data for the two alloying elements and any intermediate or intermediate-like phases that may be present in the system.

Select the calculation type and options that are appropriate for your study. This may include selecting the temperature range, the calculation mode (equilibrium or nonequilibrium), and the phase diagram type (binary, ternary, etc.).

Input the composition and temperature of the binary alloy system, as well as any other necessary information, such as the pressure or external conditions.

Run the calculation to generate the phase diagram for the binary alloy system. This will show the relative stability of the different phases at the specified composition and temperature.

Extract the enthalpy of formation of the second phase from the phase diagram or the output data. This will typically be reported in units of kJ/mol or J/mol.

Use the enthalpy of formation data to analyze the stability and behavior of the second phase in the binary alloy system.

Overall, the process of extracting the enthalpy of formation of the second phase in a binary alloy system using ThermoCalc involves performing a thermodynamic calculation and analyzing the output data to determine the relative stability of the different phases in the system. This process can provide valuable insights into the behavior of the alloy and the properties of the second phase.

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