|About this Abstract
||MS&T22: Materials Science & Technology
||Energy Materials for Sustainable Development
||Multi-layer Numerical Modeling of Selective Laser Melting Based Additive Manufacturing of Thermoelectric Powders
||Jagannath Suresh, Lei Zuo
|On-Site Speaker (Planned)
Thermoelectric generators convert heat energy to electricity and can be used for waste heat recovery, enabling sustainable development. Selective laser melting (SLM) based additive manufacturing process is a scalable and flexible method to manufacture high efficiency compact thermoelectric materials. Analyzing the thermo-fluid model of the SLM process for multiple layers is essential to decide the laser scanning parameters and thickness of each layer. In this work, a single-layer and multi-layer numerical model is developed using the volume of fluid and finite volume method to study the fluid flow, solidification, and heat transfer in the SLM melt-pool. Physical flow behaviors like the Marangoni effect, buoyant force, surface tension, and drag force are considered. The developed model provided the effects of the process parameters on the melt-pool and helped decide the precise scanning parameters for efficient fabrication along with a comparative study of the effects of layer thickness.