Modelling study of Ti64 and Ti6242 as a first approach to understand their additive manufacturing behaviors

Abstract: Aerospace and aeronautics industries push forward the research to improve constantly the quality, safety, and cost of flights. The main ways of improving products are to create lighter and better components, under a highly controlled processing from the research and development to the production at a big scale.  To achieve those goals, new processes and new materials are constantly created by engineers. In this perspective, titanium alloys have been developed and studied as they provide good mechanical properties and low density. To reduce the production costs and waste due to machining, additive manufacturing has started to be implemented on the manufacturing chains. Titanium alloys seemed to react very well to additive manufacturing, but there are still some problematics that need to be answered.  The main problematic of this thesis comes from the process development cell. It has been stated that two different titanium-based alloys, Ti-6Al-4V and Ti-6Al-2Mo-4Zr-2Sn, showed the same behavior under additive manufacturing, which is not an evident statement. Therefore, the goal of this work will be to understand the behavior of those two alloys by simulations and use of key parameters in order to model the process in a proper and accurate way.