High Speed Twin Roll Casting of Aluminum-Copper Strips with Layered Structure

Abstract

Mathematical modeling of the solidification behavior of Al-33 wt% Cu strips in a twin roll caster at speeds varying between 0.079 m/s to 3.98 m/s predicted that at high casting speed strips will have layered structure with distinct morphology. The model was validated by production of Al-33 wt% copper strips in a laboratory twin roll caster. As per the prediction from the model the high speed cast strips had layered structure with zones near the roll surface showing higher hardness as compared to the interior.

Keywords:

• Hardness
• Layered structure
• Microstructure
• Modeling
• Simulation
• Solidification
• Strip-casting
• Twin-roll

ACKNOWLEDGMENT

The authors would like to acknowledge the financial support provided by Department of science and Technology (DST) New Delhi, for generously supporting the research program.