Precipitation Calculator: Calculation Type Settings

Below are details about the settings for the Calculation Type, which is selected from the Conditions tab on the Precipitation Calculator Configuration window.

There are additional Conditions tab settings described for the Matrix Phase and Precipitate Phase.

Isothermal

Use an Isothermal calculation type to do a simulation at constant temperature.

These settings are described in the section for the Precipitation Calculator Thermal Profile.

Non-isothermal

Nucleation During a Non-isothermal Process

Use a Non-isothermal calculation type to do a simulation with a user-defined temperature profile. You can enter information directly or import a data file.

These settings are described for the Precipitation Calculator Thermal Profile including information about importing data files.

When you also have a license for the Additive Manufacturing (AM) Module you can include probe data from the AM Calculator in the set up of the thermal profile.

TTT Diagram

Use a TTT-diagram to calculate the time-temperature-transformation (TTT) curve for the formation of the precipitate phase.

Temperature: Enter Min, Max, and Step numerical values and choose a temperature Unit.
Max annealing time: Enter a numerical value and choose a time Unit.
Stop criteria: Choose Volume fraction of phase or % of equilibrium fraction and then enter a numerical value. For each temperature, the simulation stops when the stop criteria is fulfilled or if the maximum annealing time is reached, whichever happens first.

See example P_03: Stable and Metastable Carbides - TTT Diagram

CCT Diagram

Use a CCT-diagram to calculate the continuous-cooling-transformation (CCT) curve for precipitation.

Temperature: Enter Min and Max numerical values and choose a temperature Unit.
Cooling rate(s): Enter a range of values in the field, e.g..01 .1 1 10 100. These values are equal to K/s, °C/s or °F/s per second based on the temperature Unit selected.
Stop criteria: Enter a numerical value for the Volume fraction of phase. For each temperature, the simulation stops when the stop criteria is fulfilled.

See example P_07: Continuous Cooling Transformation (CCT) Diagram of Ni-Al-Cr γ-γ’.