|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||J-14: Process-property Relationship for Fabricating Complex Heat Exchanger Geometry via Laser Powder Bed Fusion Additive Manufacturing
||Junwon Seo, Ziheng Wu, Nicholas Lamprinakos, Srujana Rao Yarasi, Anthony D. Rollett
|On-Site Speaker (Planned)
Additive manufacturing of superalloys allows for a wide range of flexibility in designing highly efficient heat exchangers with a variety of potential applications such as in concentrated solar power plants. The extreme operating conditions require careful control of porosity throughout the entire geometry. However, the local accumulation of heat, which is inevitable when additively manufacturing complex geometries via laser powder bed fusion, may give rise to porosity in stress critical locations. This requires a comprehensive understanding of the process-property relationship for superalloys, which is investigated in this study by exploring a vast range of process parameters. The geometry dependent porosity distribution is investigated to find an optimal process parameter that enhances mechanical properties while maintaining a reasonable build speed. With the aid of thermal simulations, the process parameters are then optimized for many complex geometries to construct highly dense and mechanically reliable heat exchanger units.
||Additive Manufacturing, High-Temperature Materials, Mechanical Properties