|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Porosity Characterization and Reduction in AlSi10Mg Components Built Using Selective Laser Melting Systems
||Travis McFalls, Alexander Plotkowski, Jonaaron Jones, Avinash Prabhu, Derek Morin, Joshua McCoy, Sudarsanam Suresh Babu
|On-Site Speaker (Planned)
The mechanical properties of components built using selective laser melting systems are greatly affected by pore formation during rapid solidification. By limiting the hydrogen content of the AlSi10Mg powder and the solidification through build parameters, porosity content can be reduced. In this study, porosity was characterized in AlSi10Mg samples built by both SLM and Concept Laser systems. Trends relating to energy input and pore type were established for gas, keyhole, and lack of fusion. Comparisons were drawn between optically obtained density and volumetric density obtained using a gas pycnometer. Heat treatment effects on porosity were investigated and hydrogen content of both powders and builds were analyzed. This measured content confirmed the effectiveness of reducing gas porosity through process parameter control. The physical mechanisms for each type of pore formation were rationalized relative to solidification parameters.
||Planned: Supplemental Proceedings volume