|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Parametric Study on Direct Energy Deposition of Aluminum Alloys
||Parnian Kiani, Jessica Bui, Kaka Ma, Julie M. Schoenung
|On-Site Speaker (Planned)
Additive manufacturing (AM) of aluminum alloys is of great interest for aerospace and automobile applications due to their high strength to weight ratio and resistance to corrosion. Whereas various recent efforts have focused on powder bed technologies, for direct energy deposition methods such as Laser Engineered Net Shaping (LENS), high reflectivity, high heat conductivity, and low melting point of aluminum alloys present many challenges. Single tracks, single walls, and blocks were deposited to characterize the melt pool properties of the deposits, and microstructure and porosity of the builds. An extensive parametric study was performed to optimize the process parameters by tuning the laser power, powder feed rate and scan speed to be able to deposit nearly full density parts. Microstructure characterization with scanning electron microscopy and optical microscopy was conducted on the final builds. Mechanical properties such as tensile strength and elongation results are also presented in this study.
||Planned: Supplemental Proceedings volume