|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Solidification Fundamentals
||Evolution of Microstructure in Directionally Solidified Compacted Graphite Iron
||Subhojit Chaktaborty, Amber L Genau, Charles A Monroe
|On-Site Speaker (Planned)
Compacted graphite iron (CGI) has advantages of both gray and ductile iron, however its sensitivity to cooling rate and composition makes manufacturing difficult. In order to investigate the graphite morphology transition conditions, various amounts of either only Ce or both Ce and Mg were added as spherodizing elements to a near-eutectic base iron composition. Samples of these alloys were directionally solidified at different velocities, and some were also quenched to examine the solid/liquid interface. The microstructures of the samples were analyzed using optical microscopy and scanning electron microscopy. The microstructures are quantified using surface factor, roundness, nodularity, etc. in order to understand the transition of graphite in the solidified structure from flake through vermicular to nodular as a function of composition, velocity and distance from original melt interface.
||Planned: Supplemental Proceedings volume