|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Predicting Deformation and Cracking as a Function of Additive Manufacturing Process Parameters
||Richard Otis, Cornelia Altenbuchner, Andrew Shapiro
|On-Site Speaker (Planned)
A key challenge in maturing metal additive manufacturing (AM) technology is contending with heterogeneity of the thermal profile due to differences in part geometry and build orientation. Due to the complexity of a given macroscopically well-understood metallurgy process, part-level differences lead to empirical process optimization work being required for every new part, or even between revisions of the same design.
In the scope of this work, a part-level FEM model of residual stresses is combined with a CALPHAD-based phase transformation model to predict part deformation due to thermal stresses, as well as cracking due to precipitation of brittle intermetallic compounds, during the AM building process. In addition to enabling faster optimization of process parameters, this work is a step toward fully-coupled, part-level thermomechanical simulation of the additive manufacturing process, including secondary phase precipitation.
||Planned: Supplemental Proceedings volume