PM_Fe_10: Martensitic Steel Strength

The Martensitic Steel Strength Property Model, available with the Property Model Calculator and the Steel Model Library, is available to predict the general flow stress properties of martensitic steels, such as hardness, stress at arbitrary strain, yield strength, ultimate tensile strength, Young's modulus, etc.

In this example, data for AISI4068 from [1956Gra] are compared to calculations using the Martensitic Steel Strength model. In the set up, one System Definer and two Experimental File Reader activities are used along with four Property Model Calculators. The Martensitic Steel Strength Property Model is used in all cases with One Axis calculations to produce two plots that compare the tempering temperature and time to the total hardness of tempered steels.

For more information about the Property Model, see About the Martensitic Steel Strength Property Model and Martensitic Steel Strength Property Model Settings.

  • Folder: Property Models → Steel
  • File name: PM_Fe_10_Martensitic_Steel_Strength.tcu

To run calculations with the Steel Models requires a valid maintenance license plus licenses for both the TCFE (version 9 and newer) and MOBFE (version 4 and newer) databases. Also see our website to learn more about the Steel Model Library and other related examples.

This example uses TCFE13. Earlier versions of this database can be used although there may be slight differences in the results.

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.

For some Windows-based systems, performing the full calculation from the top My Project node can result in out of memory issues due to the number of calculators. If this happens, perform individual calculations for each Property Model Calculator (e.g. right-click the node and select Perform Now). This produces the full plots that are output to the Visualizations window.

When you run (Perform) this example, it takes a few minutes for the calculations to complete.

Tempering temperature compared to Total hardness of the tempered steel compared to handbook data for 1030, 1095, and 1144 steels

Figure 1: Total hardness of the tempered steel versus tempering time, for two tempering temperatures, compared to data from [1956Gra].

Tempering temperature compared to Total hardness of the tempered steel compared to handbook data for a 4130 steel

Figure 2: Total hardness of the tempered steel versus tempering temperature, for two tempering times, compared to handbook data from [1956Gra].

Reference

[1956Gra] R.A. Grange and R.W. Baughman. Hardness of tempered martensite in carbon and low alloy steels, Transactions of American Society for Metals, Vol. XLVIII, 165–197 (1956).