Introduction

Nickel based superalloys are high temperature materials used for turbine parts, airplane parts etc. CM247LC is alloy used for polycrystalline turbine blades and it is strengthen by  and gamma-prime precipitation. Selective laser melting (SLM) is used to selectively melt the powder in layer by layer fashion, and thus create 3D parts. Advantage of SLM to more traditional manufacturing methods is freedom of the geometry and possibility of very complex cooling channels, which is of course interesting for high temperature applications. Heat treatment if often used to reduce the residual stresses, 
Phase field models are used to model microstructure evolution during the solidification process. The application of the phase field model to additive manufacturing was recently done by \cite{Keller_2017} for Inconel 625 Ni-superalloy.

Numerical methods

We used the Abaqus for modeling the heat transfer in Additive Manufacturing process. The heat transfer in SLM process is modelled using the heat equation with Fouriers law and laser heat source: