Structural transitions in directionally solidified graphitic cast irons

Abstract

Magnesium fading in conjunction with directional solidification has been used to determine the conditions for the structural transition from flake to compacted to nodular graphite in a hypoeutectic and a hypereutectic cast iron. Results are presented in terms of predominance-area diagrams and the conditions for stability are given. Magnesium fading has also been studied during the experiments and a mass transfer coefficient has been determined.

MST/474