Hi,

I think you just compressed a lot in a single question. It is not an easy task and you should start from the basics and then may be ask some questions as a part of the whole problem. I would suggest you to go through basic heat transfer and structural analysis, use of functions and knowing how to analyse the results properly.

ANSYS has recently released its AM simulation tools but I don't know what features it contains. Seems it generally computes the temperature rise during the AM process. If you're going to focus on the microstructural evolution of the materials, you need to develop a micro-mechanical model containing the heat transfer equations.