Kaisheng Wu¹, Deepankar Pal², Adam Hope¹, Paul Mason¹; ¹Thermo-Calc Software Inc, ²ANSYS Inc.

The complicated and highly non-equilibrium conditions of additive manufacturing pose a grand challenge to existing computational thermodynamic and kinetic tools that have had great values for traditional solidification and heat treatment processes. Meanwhile, increasingly sophisticated numerical algorithms in microstructural and mechanical simulations for AM applications require a variety of materials data that are not only reasonably accurate, but also deliberately processed and organized. In the present work, a cooling rate dependent solute drag model for multi-component systems has been developed to account for the non-equilibrium solute partitioning during the rapid cooling AM process. It has also been embedded in Scheil model for micro-segregation behavior. Work has also been done to provide well-curated materials data, e.g., heat capacity, density, etc. for facilitating subsequent mechanical analyses. These functionalities have been integrated into ANSYS additive manufacturing software to perform processing simulations. Preliminary results of some alloys have been shown to demonstrate their capabilities.