抄録
Semi-solid roll casting of AC4C was tried using an unequal diameter twin roll caster. Character of this caster was long solidification length (300mm). This caster was equipped with a lower roll of 1000mm in diameter and an upper roll of 250mm in diameter. A cooling slope was used to make semi solid slurry. The casting speed was 20m/min, and thickness of strip was 4.5mm. The strip could be cooled rolled down to 0.5mm with out homogenization. Rolled and T4 heat treated strip, which thickness was 0.75mm, could be bent at 180 degrees with out broken.
