Inline Semisolid Rolling of Al-5%Mg Strip Cast Using Twin Roll Caster

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Abstract:

In Al-5%Mg strip cast using a high-speed twin roll caster, surface cracks can occur and these cracks remain even after cold rolling. In order to eliminate cracks, cast strip was directly rolled in a semisolid state. Casting speed of the strip was 30 m/min. Cast semisolid strip was rolled at various reductions. Semisolid high-speed roll casting could be achieved using a copper roll and small roll load. Semisolid rolled strip was cold rolled down to 1 mm. The surface condition, microstructure and tensile strength of the cast and rolled strips were evaluated. Mechanical properties of the semisolid and cold rolled strip were compared to those of hot rolled and cold rolled strip, and those of only cold rolled strip.

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June 2026

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