Abstract Scope |
Additive manufacturing (AM) generated microstructures are usually more complex than conventionally manufactured counterparts. One example is AM Ti-6Al-4V alloys, which display lamellar morphologies within prior β-grains. While AM microstructures are highly dependent on temperature profiles, these features, in turn, influence the mechanical behaviour. This paper aims at introducing an approach that integrates phase-field modelling (PFM) with crystal plasticity finite element (CPFE) modelling, to investigate the process-structure-property relationships for post-processing heat treatment.
In particular, quantitative PFM is implemented to simulate grain growth during annealing, which is necessary to eliminate initial defects. The evolved microstructure predicted is firstly compared to measurements from electron backscatter diffraction analysis, and is then imported into a CPFE model for prediction of mechanical response. Finally, the predicted results of the CPFE model are validated against mechanical test data. Prediction of microstructure and associated properties is key to fulfilling the potential benefits of producing tailored AM components. |