Selective Laser Melting/ Laser Powder Bed Fusion

Hello everyone!! I am new to DEM and CFD. I have been using LIGGGHTS for past few months. I want to model the melting and solidification of powder bed as in Selective Laser Melting(SLM) or Laser Powder Bed Fusion(LPBF). From the papers which I have read, I came to know that it can be done using CFDEM coupling. I started just with LIGGGHTS and have been able to model the powder bed. Now I want to move forward with melting and solidification. Any help in this direction would be much appreciated as I am running out of time. I want to know how to export the powder bed from LIGGGHTS to OpenFOAM? Can I do it separately in LIGGGHTS and OpenFOAM or I need to do it in CFDEM Coupling?
Thank you