Many casting and solidification finite element codes require material property data, such as latent heat, as inputs. Typically, these values are obtained from a handbook or by physically testing the material. Handbook data can be limiting as it typically does not account for heat to heat variations, temperature, and meta-stability, and simply may not exist for every alloy or novel chemistry. With Thermo-Calc, properties such as density, specific heat, and enthalpy can be calculated as a function of composition and temperature, and used to improve finite element modeling. These values can also be calculated under equilibrium (slow cooling) and non-equilibrium (rapid cooling) conditions.
This figure shows the calculated latent heat as a function of temperature during non-equilibrium solidification for a specific heat of alloy 316L. Some handbook values—which are for equilibrium and for an unknown chemistry—are shown for reference.