In KDB file, use keyword “IFE_CALC(*)” to get the calculated interfacial energy. The value can also be an expression, such as: value="1.2 * IFE_CALC(*)". The optional parameter “Interfacial_Energy_Tc” is used to define the temperature at which γ’ forms from γ congruently, and T_C represents the congruent point. In many cases this point does not exist. This parameter is optional and users should not give an arbitrary value to this parameter since it will lead to unrealistic results. In this example, this parameter is commented out in the Ni-14Al_Precipitation.kdb kinetic database. This means the correction factor b_eff in Eq. 13 in Precipitation Nucleation is set to be 1.

<Parameter type="Interfacial_Energy" value = "IFE_CALC(*)" description = "Interfacial Energy" />