PM_G_14: Ti-Fe T-Zero Martensite

The example uses the Property Model Calculator and the T-Zero Temperature Property Model to demonstrate the martensitic BCC → HCP transformation for a binary Ti-Fe system. A setting is used to include a Gibbs energy addition to the second phase, which allows for the inclusion of an energy barrier for martensitic phase transformations.

About the T0 Temperature Property Model

  • Folder: Property Models → General
  • File name: PM_G_14_Ti_Fe_T-Zero_Martensite.tcu

The TCS Ti/TiAl-based Alloys Database (TCTI) is used in this example. A valid license is required to run the example.

Visualizations

Many of our Graphical Mode examples have video tutorials, which you can access in a variety of ways. When in Thermo‑Calc, from the menu select Help → Video Tutorials, or from the main My Project window, click Video Tutorials. Alternately, you can go to the website or our YouTube channel.

Open the example project file to review the node setup on the Project window and the associated settings on the Configuration window for each node. For some types of projects, you can also adjust settings on the Plot Renderer Configuration window to preview results before performing the simulation. Click Perform Tree to generate plots and tables to see the results on the Visualizations window.

The T-Zero (barrier = 0) line is the temperature without energy addition, the solid blue line is the T-Zero temperature with an energy addition of 4000*w(Fe) [J/mol],

Figure 1: The T-Zero (barrier = 0) line is the temperature without energy addition, the solid blue line is the T-Zero temperature with an energy addition of 4000*w(Fe) [J/mol], that well reproduces the experimental data from Duwez (1952).

Reference

[1952Duw] P. Duwez, “The Martensite Transformation Temperature in Titanium Binary Alloys, Third Technical Report” (U.S. Atomic Energy Commission, 1952).