Authors:
Tim Marter (Element22 GmbH, Germany)
Abstract:
Sinter-based additive manufacturing of Titanium and its alloys faces challenges from deformation and shrinkage during sintering, limiting its adoption for complex geometries and small batch sizes. To address these issues, this presentation explores Finite Element Method (FEM)-based sinter simulations, incorporating sinter stress, gravity load, viscosity, friction, and time-temperature-densification effects. Traditional simulation models require hard-to-measure parameters and fail to match experimental curves, such as dilatometric studies.A phenomenological approach, leveraging real-world data from dilatometer measurements, overcomes these limitations by reducing the need for extensive material-specific investigations. This approach enables accurate simulations using a single temperature-time profile, simplifying data collection and improving predictive accuracy.The talk highlights the integration of these simulations into the Cold Metal Fusion (CMF) process, comparing real-world and simulated results, and discussing potential refinements. This research aims to optimize sinter-based additive manufacturing, minimizing costs in time, labour, and materials while enhancing process efficiency.
DOI:
https://doi.org/10.59499/EP256766761
